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[dev.typeparams] merge dev.regabi 41f3af9d04 into dev.typeparams

Browse source 
This brings in the new ir.Node interface, replacing *gc.Node.

Change-Id: I82c623655eee08d77d623babf22ec4d91f9aa3cd
This commit is contained in:
Russ Cox 2020-11-25 12:44:11 -05:00
commit 5c2e14872c
151 changed files with 15197 additions and 15289 deletions
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2
doc/diagnostics.html
View file

@ -455,7 +455,7 @@ environmental variable is set accordingly.</p>
each collection, summarizing the amount of memory collected
and the length of the pause.</li>
<li>GODEBUG=inittrace=1 prints a summary of execution time and memory allocation
information for completed package initilization work.</li>
information for completed package initialization work.</li>
<li>GODEBUG=schedtrace=X prints scheduling events every X milliseconds.</li>
</ul>

4
doc/go1.16.html
View file

@ -501,6 +501,10 @@ Do not send CLs removing the interior tags from such phrases.
<p><!-- CL 261917 -->
<a href="/pkg/syscall/#SysProcAttr"><code>SysProcAttr</code></a> on Windows has a new NoInheritHandles field that disables inheriting handles when creating a new process.
</p>
<p><!-- CL 269761, golang.org/issue/42584 -->
<a href="/pkg/syscall/#DLLError"><code>DLLError</code></a> on Windows now has an Unwrap function for unwrapping its underlying error.
</p>
</dd>
</dl><!-- syscall -->

23
src/cmd/cgo/out.go
View file

@ -186,7 +186,7 @@ func (p *Package) writeDefs() {
panic(fmt.Errorf("invalid var kind %q", n.Kind))
}
if *gccgo {
fmt.Fprintf(fc, `extern void *%s __asm__("%s.%s");`, n.Mangle, gccgoSymbolPrefix, n.Mangle)
fmt.Fprintf(fc, `extern void *%s __asm__("%s.%s");`, n.Mangle, gccgoSymbolPrefix, gccgoToSymbol(n.Mangle))
fmt.Fprintf(&gccgoInit, "\t%s = &%s;\n", n.Mangle, n.C)
fmt.Fprintf(fc, "\n")
}
@ -1148,7 +1148,7 @@ func (p *Package) writeGccgoExports(fgo2, fm, fgcc, fgcch io.Writer) {
// will not be able to link against it from the C
// code.
goName := "Cgoexp_" + exp.ExpName
fmt.Fprintf(fgcc, `extern %s %s %s __asm__("%s.%s");`, cRet, goName, cParams, gccgoSymbolPrefix, goName)
fmt.Fprintf(fgcc, `extern %s %s %s __asm__("%s.%s");`, cRet, goName, cParams, gccgoSymbolPrefix, gccgoToSymbol(goName))
fmt.Fprint(fgcc, "\n")
fmt.Fprint(fgcc, "\nCGO_NO_SANITIZE_THREAD\n")
@ -1182,7 +1182,7 @@ func (p *Package) writeGccgoExports(fgo2, fm, fgcc, fgcch io.Writer) {
fmt.Fprint(fgcc, "}\n")
// Dummy declaration for _cgo_main.c
fmt.Fprintf(fm, `char %s[1] __asm__("%s.%s");`, goName, gccgoSymbolPrefix, goName)
fmt.Fprintf(fm, `char %s[1] __asm__("%s.%s");`, goName, gccgoSymbolPrefix, gccgoToSymbol(goName))
fmt.Fprint(fm, "\n")
// For gccgo we use a wrapper function in Go, in order
@ -1266,9 +1266,8 @@ func (p *Package) writeExportHeader(fgcch io.Writer) {
fmt.Fprintf(fgcch, "%s\n", p.gccExportHeaderProlog())
}
// gccgoPkgpathToSymbol converts a package path to a mangled packagepath
// symbol.
func gccgoPkgpathToSymbol(ppath string) string {
// gccgoToSymbol converts a name to a mangled symbol for gccgo.
func gccgoToSymbol(ppath string) string {
if gccgoMangler == nil {
var err error
cmd := os.Getenv("GCCGO")
@ -1293,12 +1292,12 @@ func (p *Package) gccgoSymbolPrefix() string {
}
if *gccgopkgpath != "" {
return gccgoPkgpathToSymbol(*gccgopkgpath)
return gccgoToSymbol(*gccgopkgpath)
}
if *gccgoprefix == "" && p.PackageName == "main" {
return "main"
}
prefix := gccgoPkgpathToSymbol(*gccgoprefix)
prefix := gccgoToSymbol(*gccgoprefix)
if prefix == "" {
prefix = "go"
}
@ -1687,8 +1686,12 @@ void _cgoPREFIX_Cfunc__Cmalloc(void *v) {
`
func (p *Package) cPrologGccgo() string {
return strings.Replace(strings.Replace(cPrologGccgo, "PREFIX", cPrefix, -1),
"GCCGOSYMBOLPREF", p.gccgoSymbolPrefix(), -1)
r := strings.NewReplacer(
"PREFIX", cPrefix,
"GCCGOSYMBOLPREF", p.gccgoSymbolPrefix(),
"_cgoCheckPointer", gccgoToSymbol("_cgoCheckPointer"),
"_cgoCheckResult", gccgoToSymbol("_cgoCheckResult"))
return r.Replace(cPrologGccgo)
}
const cPrologGccgo = `

57
src/cmd/compile/fmtmap_test.go
View file

@ -22,16 +22,7 @@ package main_test
var knownFormats = map[string]string{
"*bytes.Buffer %s": "",
"*cmd/compile/internal/gc.EscLocation %v": "",
"*cmd/compile/internal/gc.Mpflt %v": "",
"*cmd/compile/internal/gc.Mpint %v": "",
"*cmd/compile/internal/gc.Node %#v": "",
"*cmd/compile/internal/gc.Node %+S": "",
"*cmd/compile/internal/gc.Node %+v": "",
"*cmd/compile/internal/gc.Node %L": "",
"*cmd/compile/internal/gc.Node %S": "",
"*cmd/compile/internal/gc.Node %j": "",
"*cmd/compile/internal/gc.Node %p": "",
"*cmd/compile/internal/gc.Node %v": "",
"*cmd/compile/internal/ir.node %v": "",
"*cmd/compile/internal/ssa.Block %s": "",
"*cmd/compile/internal/ssa.Block %v": "",
"*cmd/compile/internal/ssa.Func %s": "",
@ -54,7 +45,6 @@ var knownFormats = map[string]string{
"*cmd/compile/internal/types.Sym %v": "",
"*cmd/compile/internal/types.Type %#L": "",
"*cmd/compile/internal/types.Type %#v": "",
"*cmd/compile/internal/types.Type %+v": "",
"*cmd/compile/internal/types.Type %-S": "",
"*cmd/compile/internal/types.Type %0S": "",
"*cmd/compile/internal/types.Type %L": "",
@ -84,9 +74,7 @@ var knownFormats = map[string]string{
"*cmd/internal/obj.Addr %v": "",
"*cmd/internal/obj.LSym %v": "",
"*math/big.Float %f": "",
"*math/big.Int %#x": "",
"*math/big.Int %s": "",
"*math/big.Int %v": "",
"[16]byte %x": "",
"[]*cmd/compile/internal/ssa.Block %v": "",
"[]*cmd/compile/internal/ssa.Value %v": "",
@ -110,27 +98,28 @@ var knownFormats = map[string]string{
"byte %q": "",
"byte %v": "",
"cmd/compile/internal/arm.shift %d": "",
"cmd/compile/internal/gc.Class %d": "",
"cmd/compile/internal/gc.Class %s": "",
"cmd/compile/internal/gc.Class %v": "",
"cmd/compile/internal/gc.Ctype %d": "",
"cmd/compile/internal/gc.Ctype %v": "",
"cmd/compile/internal/gc.Nodes %#v": "",
"cmd/compile/internal/gc.Nodes %+v": "",
"cmd/compile/internal/gc.Nodes %.v": "",
"cmd/compile/internal/gc.Nodes %v": "",
"cmd/compile/internal/gc.Op %#v": "",
"cmd/compile/internal/gc.Op %v": "",
"cmd/compile/internal/gc.Val %#v": "",
"cmd/compile/internal/gc.Val %T": "",
"cmd/compile/internal/gc.Val %v": "",
"cmd/compile/internal/gc.fmtMode %d": "",
"cmd/compile/internal/gc.initKind %d": "",
"cmd/compile/internal/gc.itag %v": "",
"cmd/compile/internal/importer.itag %v": "",
"cmd/compile/internal/ir.Class %d": "",
"cmd/compile/internal/ir.Class %v": "",
"cmd/compile/internal/ir.FmtMode %d": "",
"cmd/compile/internal/ir.Node %#v": "",
"cmd/compile/internal/ir.Node %+S": "",
"cmd/compile/internal/ir.Node %+v": "",
"cmd/compile/internal/ir.Node %L": "",
"cmd/compile/internal/ir.Node %S": "",
"cmd/compile/internal/ir.Node %j": "",
"cmd/compile/internal/ir.Node %p": "",
"cmd/compile/internal/ir.Node %v": "",
"cmd/compile/internal/ir.Nodes %#v": "",
"cmd/compile/internal/ir.Nodes %+v": "",
"cmd/compile/internal/ir.Nodes %.v": "",
"cmd/compile/internal/ir.Nodes %v": "",
"cmd/compile/internal/ir.Op %#v": "",
"cmd/compile/internal/ir.Op %v": "",
"cmd/compile/internal/ssa.BranchPrediction %d": "",
"cmd/compile/internal/ssa.Edge %v": "",
"cmd/compile/internal/ssa.GCNode %v": "",
"cmd/compile/internal/ssa.ID %d": "",
"cmd/compile/internal/ssa.ID %v": "",
"cmd/compile/internal/ssa.LocalSlot %s": "",
@ -179,9 +168,11 @@ var knownFormats = map[string]string{
"error %v": "",
"float64 %.2f": "",
"float64 %.3f": "",
"float64 %.6g": "",
"float64 %g": "",
"go/constant.Kind %v": "",
"go/constant.Value %#v": "",
"go/constant.Value %s": "",
"go/constant.Value %v": "",
"int %#x": "",
"int %-12d": "",
"int %-6d": "",
@ -199,7 +190,6 @@ var knownFormats = map[string]string{
"int32 %v": "",
"int32 %x": "",
"int64 %#x": "",
"int64 %+d": "",
"int64 %-10d": "",
"int64 %.5d": "",
"int64 %d": "",
@ -214,13 +204,14 @@ var knownFormats = map[string]string{
"interface{} %q": "",
"interface{} %s": "",
"interface{} %v": "",
"map[*cmd/compile/internal/gc.Node]*cmd/compile/internal/ssa.Value %v": "",
"map[*cmd/compile/internal/gc.Node][]*cmd/compile/internal/gc.Node %v": "",
"map[*cmd/compile/internal/types2.TypeParam]cmd/compile/internal/types2.Type %s": "",
"map[cmd/compile/internal/ir.Node]*cmd/compile/internal/ssa.Value %v": "",
"map[cmd/compile/internal/ir.Node][]cmd/compile/internal/ir.Node %v": "",
"map[cmd/compile/internal/ssa.ID]uint32 %v": "",
"map[int64]uint32 %v": "",
"math/big.Accuracy %s": "",
"reflect.Type %s": "",
"reflect.Type %v": "",
"rune %#U": "",
"rune %c": "",
"rune %q": "",

3
src/cmd/compile/internal/amd64/ggen.go
View file

@ -5,6 +5,7 @@
package amd64
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/x86"
@ -64,7 +65,7 @@ func zerorange(pp *gc.Progs, p *obj.Prog, off, cnt int64, state *uint32) *obj.Pr
if cnt%int64(gc.Widthreg) != 0 {
// should only happen with nacl
if cnt%int64(gc.Widthptr) != 0 {
gc.Fatalf("zerorange count not a multiple of widthptr %d", cnt)
base.Fatalf("zerorange count not a multiple of widthptr %d", cnt)
}
if *state&ax == 0 {
p = pp.Appendpp(p, x86.AMOVQ, obj.TYPE_CONST, 0, 0, obj.TYPE_REG, x86.REG_AX, 0)

9
src/cmd/compile/internal/amd64/ssa.go
View file

@ -8,6 +8,7 @@ import (
"fmt"
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
@ -975,7 +976,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
r := v.Reg()
// See the comments in cmd/internal/obj/x86/obj6.go
// near CanUse1InsnTLS for a detailed explanation of these instructions.
if x86.CanUse1InsnTLS(gc.Ctxt) {
if x86.CanUse1InsnTLS(base.Ctxt) {
// MOVQ (TLS), r
p := s.Prog(x86.AMOVQ)
p.From.Type = obj.TYPE_MEM
@ -1017,7 +1018,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
}
p := s.Prog(mov)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize() // 0 on amd64, just to be consistent with other architectures
p.From.Offset = -base.Ctxt.FixedFrameSize() // 0 on amd64, just to be consistent with other architectures
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
@ -1164,8 +1165,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpAMD64MOVBatomicload, ssa.OpAMD64MOVLatomicload, ssa.OpAMD64MOVQatomicload:
p := s.Prog(v.Op.Asm())

10
src/cmd/compile/internal/arm/ssa.go
View file

@ -9,7 +9,9 @@ import (
"math"
"math/bits"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
@ -544,7 +546,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case *obj.LSym:
wantreg = "SB"
gc.AddAux(&p.From, v)
case *gc.Node:
case ir.Node:
wantreg = "SP"
gc.AddAux(&p.From, v)
case nil:
@ -741,8 +743,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpARMLoweredZero:
// MOVW.P Rarg2, 4(R1)
@ -849,7 +851,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(arm.AMOVW)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()

10
src/cmd/compile/internal/arm64/ssa.go
View file

@ -7,7 +7,9 @@ package arm64
import (
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
@ -394,7 +396,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case *obj.LSym:
wantreg = "SB"
gc.AddAux(&p.From, v)
case *gc.Node:
case ir.Node:
wantreg = "SP"
gc.AddAux(&p.From, v)
case nil:
@ -1038,8 +1040,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Line==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Line==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpARM64Equal,
ssa.OpARM64NotEqual,
@ -1068,7 +1070,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(arm64.AMOVD)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()

28
src/cmd/compile/internal/base/base.go Normal file
View file

@ -0,0 +1,28 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package base
import (
"os"
"cmd/internal/obj"
)
var Ctxt *obj.Link
var atExitFuncs []func()
func AtExit(f func()) {
atExitFuncs = append(atExitFuncs, f)
}
func Exit(code int) {
for i := len(atExitFuncs) - 1; i >= 0; i-- {
f := atExitFuncs[i]
atExitFuncs = atExitFuncs[:i]
f()
}
os.Exit(code)
}

194
src/cmd/compile/internal/base/debug.go Normal file
View file

@ -0,0 +1,194 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Debug arguments, set by -d flag.
package base
import (
"fmt"
"log"
"os"
"reflect"
"strconv"
"strings"
"cmd/internal/objabi"
)
// Debug holds the parsed debugging configuration values.
var Debug = DebugFlags{
Fieldtrack: &objabi.Fieldtrack_enabled,
}
// DebugFlags defines the debugging configuration values (see var Debug).
// Each struct field is a different value, named for the lower-case of the field name.
// Each field must be an int or string and must have a `help` struct tag.
//
// The -d option takes a comma-separated list of settings.
// Each setting is name=value; for ints, name is short for name=1.
type DebugFlags struct {
Append int `help:"print information about append compilation"`
Checkptr int `help:"instrument unsafe pointer conversions"`
Closure int `help:"print information about closure compilation"`
CompileLater int `help:"compile functions as late as possible"`
DclStack int `help:"run internal dclstack check"`
Defer int `help:"print information about defer compilation"`
DisableNil int `help:"disable nil checks"`
DumpPtrs int `help:"show Node pointers values in dump output"`
DwarfInl int `help:"print information about DWARF inlined function creation"`
Export int `help:"print export data"`
Fieldtrack *int `help:"enable field tracking"`
GCProg int `help:"print dump of GC programs"`
Libfuzzer int `help:"enable coverage instrumentation for libfuzzer"`
LocationLists int `help:"print information about DWARF location list creation"`
Nil int `help:"print information about nil checks"`
PCTab string `help:"print named pc-value table"`
Panic int `help:"show all compiler panics"`
Slice int `help:"print information about slice compilation"`
SoftFloat int `help:"force compiler to emit soft-float code"`
TypeAssert int `help:"print information about type assertion inlining"`
TypecheckInl int `help:"eager typechecking of inline function bodies"`
WB int `help:"print information about write barriers"`
any bool // set when any of the values have been set
}
// Any reports whether any of the debug flags have been set.
func (d *DebugFlags) Any() bool { return d.any }
type debugField struct {
name string
help string
val interface{} // *int or *string
}
var debugTab []debugField
func init() {
v := reflect.ValueOf(&Debug).Elem()
t := v.Type()
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Name == "any" {
continue
}
name := strings.ToLower(f.Name)
help := f.Tag.Get("help")
if help == "" {
panic(fmt.Sprintf("base.Debug.%s is missing help text", f.Name))
}
ptr := v.Field(i).Addr().Interface()
switch ptr.(type) {
default:
panic(fmt.Sprintf("base.Debug.%s has invalid type %v (must be int or string)", f.Name, f.Type))
case *int, *string:
// ok
case **int:
ptr = *ptr.(**int) // record the *int itself
}
debugTab = append(debugTab, debugField{name, help, ptr})
}
}
// DebugSSA is called to set a -d ssa/... option.
// If nil, those options are reported as invalid options.
// If DebugSSA returns a non-empty string, that text is reported as a compiler error.
var DebugSSA func(phase, flag string, val int, valString string) string
// parseDebug parses the -d debug string argument.
func parseDebug(debugstr string) {
// parse -d argument
if debugstr == "" {
return
}
Debug.any = true
Split:
for _, name := range strings.Split(debugstr, ",") {
if name == "" {
continue
}
// display help about the -d option itself and quit
if name == "help" {
fmt.Print(debugHelpHeader)
maxLen := len("ssa/help")
for _, t := range debugTab {
if len(t.name) > maxLen {
maxLen = len(t.name)
}
}
for _, t := range debugTab {
fmt.Printf("\t%-*s\t%s\n", maxLen, t.name, t.help)
}
// ssa options have their own help
fmt.Printf("\t%-*s\t%s\n", maxLen, "ssa/help", "print help about SSA debugging")
fmt.Print(debugHelpFooter)
os.Exit(0)
}
val, valstring, haveInt := 1, "", true
if i := strings.IndexAny(name, "=:"); i >= 0 {
var err error
name, valstring = name[:i], name[i+1:]
val, err = strconv.Atoi(valstring)
if err != nil {
val, haveInt = 1, false
}
}
for _, t := range debugTab {
if t.name != name {
continue
}
switch vp := t.val.(type) {
case nil:
// Ignore
case *string:
*vp = valstring
case *int:
if !haveInt {
log.Fatalf("invalid debug value %v", name)
}
*vp = val
default:
panic("bad debugtab type")
}
continue Split
}
// special case for ssa for now
if DebugSSA != nil && strings.HasPrefix(name, "ssa/") {
// expect form ssa/phase/flag
// e.g. -d=ssa/generic_cse/time
// _ in phase name also matches space
phase := name[4:]
flag := "debug" // default flag is debug
if i := strings.Index(phase, "/"); i >= 0 {
flag = phase[i+1:]
phase = phase[:i]
}
err := DebugSSA(phase, flag, val, valstring)
if err != "" {
log.Fatalf(err)
}
continue Split
}
log.Fatalf("unknown debug key -d %s\n", name)
}
}
const debugHelpHeader = `usage: -d arg[,arg]* and arg is <key>[=<value>]
<key> is one of:
`
const debugHelpFooter = `
<value> is key-specific.
Key "checkptr" supports values:
"0": instrumentation disabled
"1": conversions involving unsafe.Pointer are instrumented
"2": conversions to unsafe.Pointer force heap allocation
Key "pctab" supports values:
"pctospadj", "pctofile", "pctoline", "pctoinline", "pctopcdata"
`

454
src/cmd/compile/internal/base/flag.go Normal file
View file

@ -0,0 +1,454 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package base
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"reflect"
"runtime"
"strings"
"cmd/internal/objabi"
"cmd/internal/sys"
)
func usage() {
fmt.Fprintf(os.Stderr, "usage: compile [options] file.go...\n")
objabi.Flagprint(os.Stderr)
Exit(2)
}
// Flag holds the parsed command-line flags.
// See ParseFlag for non-zero defaults.
var Flag CmdFlags
// A CountFlag is a counting integer flag.
// It accepts -name=value to set the value directly,
// but it also accepts -name with no =value to increment the count.
type CountFlag int
// CmdFlags defines the command-line flags (see var Flag).
// Each struct field is a different flag, by default named for the lower-case of the field name.
// If the flag name is a single letter, the default flag name is left upper-case.
// If the flag name is "Lower" followed by a single letter, the default flag name is the lower-case of the last letter.
//
// If this default flag name can't be made right, the `flag` struct tag can be used to replace it,
// but this should be done only in exceptional circumstances: it helps everyone if the flag name
// is obvious from the field name when the flag is used elsewhere in the compiler sources.
// The `flag:"-"` struct tag makes a field invisible to the flag logic and should also be used sparingly.
//
// Each field must have a `help` struct tag giving the flag help message.
//
// The allowed field types are bool, int, string, pointers to those (for values stored elsewhere),
// CountFlag (for a counting flag), and func(string) (for a flag that uses special code for parsing).
type CmdFlags struct {
// Single letters
B CountFlag "help:\"disable bounds checking\""
C CountFlag "help:\"disable printing of columns in error messages\""
D string "help:\"set relative `path` for local imports\""
E CountFlag "help:\"debug symbol export\""
G CountFlag "help:\"accept generic code\""
I func(string) "help:\"add `directory` to import search path\""
K CountFlag "help:\"debug missing line numbers\""
L CountFlag "help:\"show full file names in error messages\""
N CountFlag "help:\"disable optimizations\""
S CountFlag "help:\"print assembly listing\""
// V is added by objabi.AddVersionFlag
W CountFlag "help:\"debug parse tree after type checking\""
LowerC int "help:\"concurrency during compilation (1 means no concurrency)\""
LowerD func(string) "help:\"enable debugging settings; try -d help\""
LowerE CountFlag "help:\"no limit on number of errors reported\""
LowerH CountFlag "help:\"halt on error\""
LowerJ CountFlag "help:\"debug runtime-initialized variables\""
LowerL CountFlag "help:\"disable inlining\""
LowerM CountFlag "help:\"print optimization decisions\""
LowerO string "help:\"write output to `file`\""
LowerP *string "help:\"set expected package import `path`\"" // &Ctxt.Pkgpath, set below
LowerR CountFlag "help:\"debug generated wrappers\""
LowerT bool "help:\"enable tracing for debugging the compiler\""
LowerW CountFlag "help:\"debug type checking\""
LowerV *bool "help:\"increase debug verbosity\""
// Special characters
Percent int "flag:\"%\" help:\"debug non-static initializers\""
CompilingRuntime bool "flag:\"+\" help:\"compiling runtime\""
// Longer names
AsmHdr string "help:\"write assembly header to `file`\""
Bench string "help:\"append benchmark times to `file`\""
BlockProfile string "help:\"write block profile to `file`\""
BuildID string "help:\"record `id` as the build id in the export metadata\""
CPUProfile string "help:\"write cpu profile to `file`\""
Complete bool "help:\"compiling complete package (no C or assembly)\""
Dwarf bool "help:\"generate DWARF symbols\""
DwarfBASEntries *bool "help:\"use base address selection entries in DWARF\"" // &Ctxt.UseBASEntries, set below
DwarfLocationLists *bool "help:\"add location lists to DWARF in optimized mode\"" // &Ctxt.Flag_locationlists, set below
Dynlink *bool "help:\"support references to Go symbols defined in other shared libraries\"" // &Ctxt.Flag_dynlink, set below
EmbedCfg func(string) "help:\"read go:embed configuration from `file`\""
GenDwarfInl int "help:\"generate DWARF inline info records\"" // 0=disabled, 1=funcs, 2=funcs+formals/locals
GoVersion string "help:\"required version of the runtime\""
ImportCfg func(string) "help:\"read import configuration from `file`\""
ImportMap func(string) "help:\"add `definition` of the form source=actual to import map\""
InstallSuffix string "help:\"set pkg directory `suffix`\""
JSON string "help:\"version,file for JSON compiler/optimizer detail output\""
Lang string "help:\"Go language version source code expects\""
LinkObj string "help:\"write linker-specific object to `file`\""
LinkShared *bool "help:\"generate code that will be linked against Go shared libraries\"" // &Ctxt.Flag_linkshared, set below
Live CountFlag "help:\"debug liveness analysis\""
MSan bool "help:\"build code compatible with C/C++ memory sanitizer\""
MemProfile string "help:\"write memory profile to `file`\""
MemProfileRate int64 "help:\"set runtime.MemProfileRate to `rate`\""
MutexProfile string "help:\"write mutex profile to `file`\""
NoLocalImports bool "help:\"reject local (relative) imports\""
Pack bool "help:\"write to file.a instead of file.o\""
Race bool "help:\"enable race detector\""
Shared *bool "help:\"generate code that can be linked into a shared library\"" // &Ctxt.Flag_shared, set below
SmallFrames bool "help:\"reduce the size limit for stack allocated objects\"" // small stacks, to diagnose GC latency; see golang.org/issue/27732
Spectre string "help:\"enable spectre mitigations in `list` (all, index, ret)\""
Std bool "help:\"compiling standard library\""
SymABIs string "help:\"read symbol ABIs from `file`\""
TraceProfile string "help:\"write an execution trace to `file`\""
TrimPath string "help:\"remove `prefix` from recorded source file paths\""
WB bool "help:\"enable write barrier\"" // TODO: remove
// Configuration derived from flags; not a flag itself.
Cfg struct {
Embed struct { // set by -embedcfg
Patterns map[string][]string
Files map[string]string
}
ImportDirs []string // appended to by -I
ImportMap map[string]string // set by -importmap OR -importcfg
PackageFile map[string]string // set by -importcfg; nil means not in use
SpectreIndex bool // set by -spectre=index or -spectre=all
}
}
// ParseFlags parses the command-line flags into Flag.
func ParseFlags() {
Flag.I = addImportDir
Flag.LowerC = 1
Flag.LowerD = parseDebug
Flag.LowerP = &Ctxt.Pkgpath
Flag.LowerV = &Ctxt.Debugvlog
Flag.Dwarf = objabi.GOARCH != "wasm"
Flag.DwarfBASEntries = &Ctxt.UseBASEntries
Flag.DwarfLocationLists = &Ctxt.Flag_locationlists
*Flag.DwarfLocationLists = true
Flag.Dynlink = &Ctxt.Flag_dynlink
Flag.EmbedCfg = readEmbedCfg
Flag.GenDwarfInl = 2
Flag.ImportCfg = readImportCfg
Flag.ImportMap = addImportMap
Flag.LinkShared = &Ctxt.Flag_linkshared
Flag.Shared = &Ctxt.Flag_shared
Flag.WB = true
Flag.Cfg.ImportMap = make(map[string]string)
objabi.AddVersionFlag() // -V
registerFlags()
objabi.Flagparse(usage)
if Flag.MSan && !sys.MSanSupported(objabi.GOOS, objabi.GOARCH) {
log.Fatalf("%s/%s does not support -msan", objabi.GOOS, objabi.GOARCH)
}
if Flag.Race && !sys.RaceDetectorSupported(objabi.GOOS, objabi.GOARCH) {
log.Fatalf("%s/%s does not support -race", objabi.GOOS, objabi.GOARCH)
}
if (*Flag.Shared || *Flag.Dynlink || *Flag.LinkShared) && !Ctxt.Arch.InFamily(sys.AMD64, sys.ARM, sys.ARM64, sys.I386, sys.PPC64, sys.RISCV64, sys.S390X) {
log.Fatalf("%s/%s does not support -shared", objabi.GOOS, objabi.GOARCH)
}
parseSpectre(Flag.Spectre) // left as string for recordFlags
Ctxt.Flag_shared = Ctxt.Flag_dynlink || Ctxt.Flag_shared
Ctxt.Flag_optimize = Flag.N == 0
Ctxt.Debugasm = int(Flag.S)
if flag.NArg() < 1 {
usage()
}
if Flag.GoVersion != "" && Flag.GoVersion != runtime.Version() {
fmt.Printf("compile: version %q does not match go tool version %q\n", runtime.Version(), Flag.GoVersion)
Exit(2)
}
if Flag.LowerO == "" {
p := flag.Arg(0)
if i := strings.LastIndex(p, "/"); i >= 0 {
p = p[i+1:]
}
if runtime.GOOS == "windows" {
if i := strings.LastIndex(p, `\`); i >= 0 {
p = p[i+1:]
}
}
if i := strings.LastIndex(p, "."); i >= 0 {
p = p[:i]
}
suffix := ".o"
if Flag.Pack {
suffix = ".a"
}
Flag.LowerO = p + suffix
}
if Flag.Race && Flag.MSan {
log.Fatal("cannot use both -race and -msan")
}
if Flag.Race || Flag.MSan {
// -race and -msan imply -d=checkptr for now.
Debug.Checkptr = 1
}
if Flag.CompilingRuntime && Flag.N != 0 {
log.Fatal("cannot disable optimizations while compiling runtime")
}
if Flag.LowerC < 1 {
log.Fatalf("-c must be at least 1, got %d", Flag.LowerC)
}
if Flag.LowerC > 1 && !concurrentBackendAllowed() {
log.Fatalf("cannot use concurrent backend compilation with provided flags; invoked as %v", os.Args)
}
if Flag.CompilingRuntime {
// Runtime can't use -d=checkptr, at least not yet.
Debug.Checkptr = 0
// Fuzzing the runtime isn't interesting either.
Debug.Libfuzzer = 0
}
// set via a -d flag
Ctxt.Debugpcln = Debug.PCTab
}
// registerFlags adds flag registrations for all the fields in Flag.
// See the comment on type CmdFlags for the rules.
func registerFlags() {
var (
boolType = reflect.TypeOf(bool(false))
intType = reflect.TypeOf(int(0))
stringType = reflect.TypeOf(string(""))
ptrBoolType = reflect.TypeOf(new(bool))
ptrIntType = reflect.TypeOf(new(int))
ptrStringType = reflect.TypeOf(new(string))
countType = reflect.TypeOf(CountFlag(0))
funcType = reflect.TypeOf((func(string))(nil))
)
v := reflect.ValueOf(&Flag).Elem()
t := v.Type()
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Name == "Cfg" {
continue
}
var name string
if len(f.Name) == 1 {
name = f.Name
} else if len(f.Name) == 6 && f.Name[:5] == "Lower" && 'A' <= f.Name[5] && f.Name[5] <= 'Z' {
name = string(rune(f.Name[5] + 'a' - 'A'))
} else {
name = strings.ToLower(f.Name)
}
if tag := f.Tag.Get("flag"); tag != "" {
name = tag
}
help := f.Tag.Get("help")
if help == "" {
panic(fmt.Sprintf("base.Flag.%s is missing help text", f.Name))
}
if k := f.Type.Kind(); (k == reflect.Ptr || k == reflect.Func) && v.Field(i).IsNil() {
panic(fmt.Sprintf("base.Flag.%s is uninitialized %v", f.Name, f.Type))
}
switch f.Type {
case boolType:
p := v.Field(i).Addr().Interface().(*bool)
flag.BoolVar(p, name, *p, help)
case intType:
p := v.Field(i).Addr().Interface().(*int)
flag.IntVar(p, name, *p, help)
case stringType:
p := v.Field(i).Addr().Interface().(*string)
flag.StringVar(p, name, *p, help)
case ptrBoolType:
p := v.Field(i).Interface().(*bool)
flag.BoolVar(p, name, *p, help)
case ptrIntType:
p := v.Field(i).Interface().(*int)
flag.IntVar(p, name, *p, help)
case ptrStringType:
p := v.Field(i).Interface().(*string)
flag.StringVar(p, name, *p, help)
case countType:
p := (*int)(v.Field(i).Addr().Interface().(*CountFlag))
objabi.Flagcount(name, help, p)
case funcType:
f := v.Field(i).Interface().(func(string))
objabi.Flagfn1(name, help, f)
}
}
}
// concurrentFlagOk reports whether the current compiler flags
// are compatible with concurrent compilation.
func concurrentFlagOk() bool {
// TODO(rsc): Many of these are fine. Remove them.
return Flag.Percent == 0 &&
Flag.E == 0 &&
Flag.K == 0 &&
Flag.L == 0 &&
Flag.LowerH == 0 &&
Flag.LowerJ == 0 &&
Flag.LowerM == 0 &&
Flag.LowerR == 0
}
func concurrentBackendAllowed() bool {
if !concurrentFlagOk() {
return false
}
// Debug.S by itself is ok, because all printing occurs
// while writing the object file, and that is non-concurrent.
// Adding Debug_vlog, however, causes Debug.S to also print
// while flushing the plist, which happens concurrently.
if Ctxt.Debugvlog || Debug.Any() || Flag.Live > 0 {
return false
}
// TODO: Test and delete this condition.
if objabi.Fieldtrack_enabled != 0 {
return false
}
// TODO: fix races and enable the following flags
if Ctxt.Flag_shared || Ctxt.Flag_dynlink || Flag.Race {
return false
}
return true
}
func addImportDir(dir string) {
if dir != "" {
Flag.Cfg.ImportDirs = append(Flag.Cfg.ImportDirs, dir)
}
}
func addImportMap(s string) {
if Flag.Cfg.ImportMap == nil {
Flag.Cfg.ImportMap = make(map[string]string)
}
if strings.Count(s, "=") != 1 {
log.Fatal("-importmap argument must be of the form source=actual")
}
i := strings.Index(s, "=")
source, actual := s[:i], s[i+1:]
if source == "" || actual == "" {
log.Fatal("-importmap argument must be of the form source=actual; source and actual must be non-empty")
}
Flag.Cfg.ImportMap[source] = actual
}
func readImportCfg(file string) {
if Flag.Cfg.ImportMap == nil {
Flag.Cfg.ImportMap = make(map[string]string)
}
Flag.Cfg.PackageFile = map[string]string{}
data, err := ioutil.ReadFile(file)
if err != nil {
log.Fatalf("-importcfg: %v", err)
}
for lineNum, line := range strings.Split(string(data), "\n") {
lineNum++ // 1-based
line = strings.TrimSpace(line)
if line == "" || strings.HasPrefix(line, "#") {
continue
}
var verb, args string
if i := strings.Index(line, " "); i < 0 {
verb = line
} else {
verb, args = line[:i], strings.TrimSpace(line[i+1:])
}
var before, after string
if i := strings.Index(args, "="); i >= 0 {
before, after = args[:i], args[i+1:]
}
switch verb {
default:
log.Fatalf("%s:%d: unknown directive %q", file, lineNum, verb)
case "importmap":
if before == "" || after == "" {
log.Fatalf(`%s:%d: invalid importmap: syntax is "importmap old=new"`, file, lineNum)
}
Flag.Cfg.ImportMap[before] = after
case "packagefile":
if before == "" || after == "" {
log.Fatalf(`%s:%d: invalid packagefile: syntax is "packagefile path=filename"`, file, lineNum)
}
Flag.Cfg.PackageFile[before] = after
}
}
}
func readEmbedCfg(file string) {
data, err := ioutil.ReadFile(file)
if err != nil {
log.Fatalf("-embedcfg: %v", err)
}
if err := json.Unmarshal(data, &Flag.Cfg.Embed); err != nil {
log.Fatalf("%s: %v", file, err)
}
if Flag.Cfg.Embed.Patterns == nil {
log.Fatalf("%s: invalid embedcfg: missing Patterns", file)
}
if Flag.Cfg.Embed.Files == nil {
log.Fatalf("%s: invalid embedcfg: missing Files", file)
}
}
// parseSpectre parses the spectre configuration from the string s.
func parseSpectre(s string) {
for _, f := range strings.Split(s, ",") {
f = strings.TrimSpace(f)
switch f {
default:
log.Fatalf("unknown setting -spectre=%s", f)
case "":
// nothing
case "all":
Flag.Cfg.SpectreIndex = true
Ctxt.Retpoline = true
case "index":
Flag.Cfg.SpectreIndex = true
case "ret":
Ctxt.Retpoline = true
}
}
if Flag.Cfg.SpectreIndex {
switch objabi.GOARCH {
case "amd64":
// ok
default:
log.Fatalf("GOARCH=%s does not support -spectre=index", objabi.GOARCH)
}
}
}

260
src/cmd/compile/internal/base/print.go Normal file
View file

@ -0,0 +1,260 @@
// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package base
import (
"fmt"
"os"
"runtime/debug"
"sort"
"strings"
"cmd/internal/objabi"
"cmd/internal/src"
)
// An errorMsg is a queued error message, waiting to be printed.
type errorMsg struct {
pos src.XPos
msg string
}
// Pos is the current source position being processed,
// printed by Errorf, ErrorfLang, Fatalf, and Warnf.
var Pos src.XPos
var (
errorMsgs []errorMsg
numErrors int // number of entries in errorMsgs that are errors (as opposed to warnings)
numSyntaxErrors int
)
// Errors returns the number of errors reported.
func Errors() int {
return numErrors
}
// SyntaxErrors returns the number of syntax errors reported
func SyntaxErrors() int {
return numSyntaxErrors
}
// addErrorMsg adds a new errorMsg (which may be a warning) to errorMsgs.
func addErrorMsg(pos src.XPos, format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
// Only add the position if know the position.
// See issue golang.org/issue/11361.
if pos.IsKnown() {
msg = fmt.Sprintf("%v: %s", FmtPos(pos), msg)
}
errorMsgs = append(errorMsgs, errorMsg{
pos: pos,
msg: msg + "\n",
})
}
// FmtPos formats pos as a file:line string.
func FmtPos(pos src.XPos) string {
if Ctxt == nil {
return "???"
}
return Ctxt.OutermostPos(pos).Format(Flag.C == 0, Flag.L == 1)
}
// byPos sorts errors by source position.
type byPos []errorMsg
func (x byPos) Len() int { return len(x) }
func (x byPos) Less(i, j int) bool { return x[i].pos.Before(x[j].pos) }
func (x byPos) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
// FlushErrors sorts errors seen so far by line number, prints them to stdout,
// and empties the errors array.
func FlushErrors() {
Ctxt.Bso.Flush()
if len(errorMsgs) == 0 {
return
}
sort.Stable(byPos(errorMsgs))
for i, err := range errorMsgs {
if i == 0 || err.msg != errorMsgs[i-1].msg {
fmt.Printf("%s", err.msg)
}
}
errorMsgs = errorMsgs[:0]
}
// lasterror keeps track of the most recently issued error,
// to avoid printing multiple error messages on the same line.
var lasterror struct {
syntax src.XPos // source position of last syntax error
other src.XPos // source position of last non-syntax error
msg string // error message of last non-syntax error
}
// sameline reports whether two positions a, b are on the same line.
func sameline(a, b src.XPos) bool {
p := Ctxt.PosTable.Pos(a)
q := Ctxt.PosTable.Pos(b)
return p.Base() == q.Base() && p.Line() == q.Line()
}
// Errorf reports a formatted error at the current line.
func Errorf(format string, args ...interface{}) {
ErrorfAt(Pos, format, args...)
}
// ErrorfAt reports a formatted error message at pos.
func ErrorfAt(pos src.XPos, format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
if strings.HasPrefix(msg, "syntax error") {
numSyntaxErrors++
// only one syntax error per line, no matter what error
if sameline(lasterror.syntax, pos) {
return
}
lasterror.syntax = pos
} else {
// only one of multiple equal non-syntax errors per line
// (flusherrors shows only one of them, so we filter them
// here as best as we can (they may not appear in order)
// so that we don't count them here and exit early, and
// then have nothing to show for.)
if sameline(lasterror.other, pos) && lasterror.msg == msg {
return
}
lasterror.other = pos
lasterror.msg = msg
}
addErrorMsg(pos, "%s", msg)
numErrors++
hcrash()
if numErrors >= 10 && Flag.LowerE == 0 {
FlushErrors()
fmt.Printf("%v: too many errors\n", FmtPos(pos))
ErrorExit()
}
}
// ErrorfVers reports that a language feature (format, args) requires a later version of Go.
func ErrorfVers(lang string, format string, args ...interface{}) {
Errorf("%s requires %s or later (-lang was set to %s; check go.mod)", fmt.Sprintf(format, args...), lang, Flag.Lang)
}
// UpdateErrorDot is a clumsy hack that rewrites the last error,
// if it was "LINE: undefined: NAME", to be "LINE: undefined: NAME in EXPR".
// It is used to give better error messages for dot (selector) expressions.
func UpdateErrorDot(line string, name, expr string) {
if len(errorMsgs) == 0 {
return
}
e := &errorMsgs[len(errorMsgs)-1]
if strings.HasPrefix(e.msg, line) && e.msg == fmt.Sprintf("%v: undefined: %v\n", line, name) {
e.msg = fmt.Sprintf("%v: undefined: %v in %v\n", line, name, expr)
}
}
// Warnf reports a formatted warning at the current line.
// In general the Go compiler does NOT generate warnings,
// so this should be used only when the user has opted in
// to additional output by setting a particular flag.
func Warn(format string, args ...interface{}) {
WarnfAt(Pos, format, args...)
}
// WarnfAt reports a formatted warning at pos.
// In general the Go compiler does NOT generate warnings,
// so this should be used only when the user has opted in
// to additional output by setting a particular flag.
func WarnfAt(pos src.XPos, format string, args ...interface{}) {
addErrorMsg(pos, format, args...)
if Flag.LowerM != 0 {
FlushErrors()
}
}
// Fatalf reports a fatal error - an internal problem - at the current line and exits.
// If other errors have already been printed, then Fatalf just quietly exits.
// (The internal problem may have been caused by incomplete information
// after the already-reported errors, so best to let users fix those and
// try again without being bothered about a spurious internal error.)
//
// But if no errors have been printed, or if -d panic has been specified,
// Fatalf prints the error as an "internal compiler error". In a released build,
// it prints an error asking to file a bug report. In development builds, it
// prints a stack trace.
//
// If -h has been specified, Fatalf panics to force the usual runtime info dump.
func Fatalf(format string, args ...interface{}) {
FatalfAt(Pos, format, args...)
}
// FatalfAt reports a fatal error - an internal problem - at pos and exits.
// If other errors have already been printed, then FatalfAt just quietly exits.
// (The internal problem may have been caused by incomplete information
// after the already-reported errors, so best to let users fix those and
// try again without being bothered about a spurious internal error.)
//
// But if no errors have been printed, or if -d panic has been specified,
// FatalfAt prints the error as an "internal compiler error". In a released build,
// it prints an error asking to file a bug report. In development builds, it
// prints a stack trace.
//
// If -h has been specified, FatalfAt panics to force the usual runtime info dump.
func FatalfAt(pos src.XPos, format string, args ...interface{}) {
FlushErrors()
if Debug.Panic != 0 || numErrors == 0 {
fmt.Printf("%v: internal compiler error: ", FmtPos(pos))
fmt.Printf(format, args...)
fmt.Printf("\n")
// If this is a released compiler version, ask for a bug report.
if strings.HasPrefix(objabi.Version, "go") {
fmt.Printf("\n")
fmt.Printf("Please file a bug report including a short program that triggers the error.\n")
fmt.Printf("https://golang.org/issue/new\n")
} else {
// Not a release; dump a stack trace, too.
fmt.Println()
os.Stdout.Write(debug.Stack())
fmt.Println()
}
}
hcrash()
ErrorExit()
}
// hcrash crashes the compiler when -h is set, to find out where a message is generated.
func hcrash() {
if Flag.LowerH != 0 {
FlushErrors()
if Flag.LowerO != "" {
os.Remove(Flag.LowerO)
}
panic("-h")
}
}
// ErrorExit handles an error-status exit.
// It flushes any pending errors, removes the output file, and exits.
func ErrorExit() {
FlushErrors()
if Flag.LowerO != "" {
os.Remove(Flag.LowerO)
}
os.Exit(2)
}
// ExitIfErrors calls ErrorExit if any errors have been reported.
func ExitIfErrors() {
if Errors() > 0 {
ErrorExit()
}
}

384
src/cmd/compile/internal/gc/alg.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/obj"
"fmt"
@ -69,11 +71,11 @@ func EqCanPanic(t *types.Type) bool {
switch t.Etype {
default:
return false
case TINTER:
case types.TINTER:
return true
case TARRAY:
case types.TARRAY:
return EqCanPanic(t.Elem())
case TSTRUCT:
case types.TSTRUCT:
for _, f := range t.FieldSlice() {
if !f.Sym.IsBlank() && EqCanPanic(f.Type) {
return true
@ -119,45 +121,45 @@ func algtype1(t *types.Type) (AlgKind, *types.Type) {
}
switch t.Etype {
case TANY, TFORW:
case types.TANY, types.TFORW:
// will be defined later.
return ANOEQ, t
case TINT8, TUINT8, TINT16, TUINT16,
TINT32, TUINT32, TINT64, TUINT64,
TINT, TUINT, TUINTPTR,
TBOOL, TPTR,
TCHAN, TUNSAFEPTR:
case types.TINT8, types.TUINT8, types.TINT16, types.TUINT16,
types.TINT32, types.TUINT32, types.TINT64, types.TUINT64,
types.TINT, types.TUINT, types.TUINTPTR,
types.TBOOL, types.TPTR,
types.TCHAN, types.TUNSAFEPTR:
return AMEM, nil
case TFUNC, TMAP:
case types.TFUNC, types.TMAP:
return ANOEQ, t
case TFLOAT32:
case types.TFLOAT32:
return AFLOAT32, nil
case TFLOAT64:
case types.TFLOAT64:
return AFLOAT64, nil
case TCOMPLEX64:
case types.TCOMPLEX64:
return ACPLX64, nil
case TCOMPLEX128:
case types.TCOMPLEX128:
return ACPLX128, nil
case TSTRING:
case types.TSTRING:
return ASTRING, nil
case TINTER:
case types.TINTER:
if t.IsEmptyInterface() {
return ANILINTER, nil
}
return AINTER, nil
case TSLICE:
case types.TSLICE:
return ANOEQ, t
case TARRAY:
case types.TARRAY:
a, bad := algtype1(t.Elem())
switch a {
case AMEM:
@ -177,7 +179,7 @@ func algtype1(t *types.Type) (AlgKind, *types.Type) {
return ASPECIAL, nil
case TSTRUCT:
case types.TSTRUCT:
fields := t.FieldSlice()
// One-field struct is same as that one field alone.
@ -203,7 +205,7 @@ func algtype1(t *types.Type) (AlgKind, *types.Type) {
return ret, nil
}
Fatalf("algtype1: unexpected type %v", t)
base.Fatalf("algtype1: unexpected type %v", t)
return 0, nil
}
@ -214,7 +216,7 @@ func genhash(t *types.Type) *obj.LSym {
switch algtype(t) {
default:
// genhash is only called for types that have equality
Fatalf("genhash %v", t)
base.Fatalf("genhash %v", t)
case AMEM0:
return sysClosure("memhash0")
case AMEM8:
@ -282,24 +284,24 @@ func genhash(t *types.Type) *obj.LSym {
}
sym := typesymprefix(".hash", t)
if Debug.r != 0 {
if base.Flag.LowerR != 0 {
fmt.Printf("genhash %v %v %v\n", closure, sym, t)
}
lineno = autogeneratedPos // less confusing than end of input
dclcontext = PEXTERN
base.Pos = autogeneratedPos // less confusing than end of input
dclcontext = ir.PEXTERN
// func sym(p *T, h uintptr) uintptr
tfn := nod(OTFUNC, nil, nil)
tfn.List.Set2(
tfn := ir.Nod(ir.OTFUNC, nil, nil)
tfn.PtrList().Set2(
namedfield("p", types.NewPtr(t)),
namedfield("h", types.Types[TUINTPTR]),
namedfield("h", types.Types[types.TUINTPTR]),
)
tfn.Rlist.Set1(anonfield(types.Types[TUINTPTR]))
tfn.PtrRlist().Set1(anonfield(types.Types[types.TUINTPTR]))
fn := dclfunc(sym, tfn)
np := asNode(tfn.Type.Params().Field(0).Nname)
nh := asNode(tfn.Type.Params().Field(1).Nname)
np := ir.AsNode(tfn.Type().Params().Field(0).Nname)
nh := ir.AsNode(tfn.Type().Params().Field(1).Nname)
switch t.Etype {
case types.TARRAY:
@ -308,25 +310,25 @@ func genhash(t *types.Type) *obj.LSym {
// pure memory.
hashel := hashfor(t.Elem())
n := nod(ORANGE, nil, nod(ODEREF, np, nil))
ni := newname(lookup("i"))
ni.Type = types.Types[TINT]
n.List.Set1(ni)
n := ir.Nod(ir.ORANGE, nil, ir.Nod(ir.ODEREF, np, nil))
ni := NewName(lookup("i"))
ni.SetType(types.Types[types.TINT])
n.PtrList().Set1(ni)
n.SetColas(true)
colasdefn(n.List.Slice(), n)
ni = n.List.First()
colasdefn(n.List().Slice(), n)
ni = n.List().First()
// h = hashel(&p[i], h)
call := nod(OCALL, hashel, nil)
call := ir.Nod(ir.OCALL, hashel, nil)
nx := nod(OINDEX, np, ni)
nx := ir.Nod(ir.OINDEX, np, ni)
nx.SetBounded(true)
na := nod(OADDR, nx, nil)
call.List.Append(na)
call.List.Append(nh)
n.Nbody.Append(nod(OAS, nh, call))
na := ir.Nod(ir.OADDR, nx, nil)
call.PtrList().Append(na)
call.PtrList().Append(nh)
n.PtrBody().Append(ir.Nod(ir.OAS, nh, call))
fn.Nbody.Append(n)
fn.PtrBody().Append(n)
case types.TSTRUCT:
// Walk the struct using memhash for runs of AMEM
@ -343,12 +345,12 @@ func genhash(t *types.Type) *obj.LSym {
// Hash non-memory fields with appropriate hash function.
if !IsRegularMemory(f.Type) {
hashel := hashfor(f.Type)
call := nod(OCALL, hashel, nil)
nx := nodSym(OXDOT, np, f.Sym) // TODO: fields from other packages?
na := nod(OADDR, nx, nil)
call.List.Append(na)
call.List.Append(nh)
fn.Nbody.Append(nod(OAS, nh, call))
call := ir.Nod(ir.OCALL, hashel, nil)
nx := nodSym(ir.OXDOT, np, f.Sym) // TODO: fields from other packages?
na := ir.Nod(ir.OADDR, nx, nil)
call.PtrList().Append(na)
call.PtrList().Append(nh)
fn.PtrBody().Append(ir.Nod(ir.OAS, nh, call))
i++
continue
}
@ -358,40 +360,40 @@ func genhash(t *types.Type) *obj.LSym {
// h = hashel(&p.first, size, h)
hashel := hashmem(f.Type)
call := nod(OCALL, hashel, nil)
nx := nodSym(OXDOT, np, f.Sym) // TODO: fields from other packages?
na := nod(OADDR, nx, nil)
call.List.Append(na)
call.List.Append(nh)
call.List.Append(nodintconst(size))
fn.Nbody.Append(nod(OAS, nh, call))
call := ir.Nod(ir.OCALL, hashel, nil)
nx := nodSym(ir.OXDOT, np, f.Sym) // TODO: fields from other packages?
na := ir.Nod(ir.OADDR, nx, nil)
call.PtrList().Append(na)
call.PtrList().Append(nh)
call.PtrList().Append(nodintconst(size))
fn.PtrBody().Append(ir.Nod(ir.OAS, nh, call))
i = next
}
}
r := nod(ORETURN, nil, nil)
r.List.Append(nh)
fn.Nbody.Append(r)
r := ir.Nod(ir.ORETURN, nil, nil)
r.PtrList().Append(nh)
fn.PtrBody().Append(r)
if Debug.r != 0 {
dumplist("genhash body", fn.Nbody)
if base.Flag.LowerR != 0 {
ir.DumpList("genhash body", fn.Body())
}
funcbody()
fn.Func.SetDupok(true)
fn.Func().SetDupok(true)
fn = typecheck(fn, ctxStmt)
Curfn = fn
typecheckslice(fn.Nbody.Slice(), ctxStmt)
typecheckslice(fn.Body().Slice(), ctxStmt)
Curfn = nil
if debug_dclstack != 0 {
if base.Debug.DclStack != 0 {
testdclstack()
}
fn.Func.SetNilCheckDisabled(true)
fn.Func().SetNilCheckDisabled(true)
xtop = append(xtop, fn)
// Build closure. It doesn't close over any variables, so
@ -402,12 +404,12 @@ func genhash(t *types.Type) *obj.LSym {
return closure
}
func hashfor(t *types.Type) *Node {
func hashfor(t *types.Type) ir.Node {
var sym *types.Sym
switch a, _ := algtype1(t); a {
case AMEM:
Fatalf("hashfor with AMEM type")
base.Fatalf("hashfor with AMEM type")
case AINTER:
sym = Runtimepkg.Lookup("interhash")
case ANILINTER:
@ -428,14 +430,14 @@ func hashfor(t *types.Type) *Node {
sym = typesymprefix(".hash", t)
}
n := newname(sym)
n := NewName(sym)
setNodeNameFunc(n)
n.Type = functype(nil, []*Node{
n.SetType(functype(nil, []ir.Node{
anonfield(types.NewPtr(t)),
anonfield(types.Types[TUINTPTR]),
}, []*Node{
anonfield(types.Types[TUINTPTR]),
})
anonfield(types.Types[types.TUINTPTR]),
}, []ir.Node{
anonfield(types.Types[types.TUINTPTR]),
}))
return n
}
@ -509,27 +511,27 @@ func geneq(t *types.Type) *obj.LSym {
return closure
}
sym := typesymprefix(".eq", t)
if Debug.r != 0 {
if base.Flag.LowerR != 0 {
fmt.Printf("geneq %v\n", t)
}
// Autogenerate code for equality of structs and arrays.
lineno = autogeneratedPos // less confusing than end of input
dclcontext = PEXTERN
base.Pos = autogeneratedPos // less confusing than end of input
dclcontext = ir.PEXTERN
// func sym(p, q *T) bool
tfn := nod(OTFUNC, nil, nil)
tfn.List.Set2(
tfn := ir.Nod(ir.OTFUNC, nil, nil)
tfn.PtrList().Set2(
namedfield("p", types.NewPtr(t)),
namedfield("q", types.NewPtr(t)),
)
tfn.Rlist.Set1(namedfield("r", types.Types[TBOOL]))
tfn.PtrRlist().Set1(namedfield("r", types.Types[types.TBOOL]))
fn := dclfunc(sym, tfn)
np := asNode(tfn.Type.Params().Field(0).Nname)
nq := asNode(tfn.Type.Params().Field(1).Nname)
nr := asNode(tfn.Type.Results().Field(0).Nname)
np := ir.AsNode(tfn.Type().Params().Field(0).Nname)
nq := ir.AsNode(tfn.Type().Params().Field(1).Nname)
nr := ir.AsNode(tfn.Type().Results().Field(0).Nname)
// Label to jump to if an equality test fails.
neq := autolabel(".neq")
@ -539,9 +541,9 @@ func geneq(t *types.Type) *obj.LSym {
// so t must be either an array or a struct.
switch t.Etype {
default:
Fatalf("geneq %v", t)
base.Fatalf("geneq %v", t)
case TARRAY:
case types.TARRAY:
nelem := t.NumElem()
// checkAll generates code to check the equality of all array elements.
@ -565,17 +567,17 @@ func geneq(t *types.Type) *obj.LSym {
//
// TODO(josharian): consider doing some loop unrolling
// for larger nelem as well, processing a few elements at a time in a loop.
checkAll := func(unroll int64, last bool, eq func(pi, qi *Node) *Node) {
checkAll := func(unroll int64, last bool, eq func(pi, qi ir.Node) ir.Node) {
// checkIdx generates a node to check for equality at index i.
checkIdx := func(i *Node) *Node {
checkIdx := func(i ir.Node) ir.Node {
// pi := p[i]
pi := nod(OINDEX, np, i)
pi := ir.Nod(ir.OINDEX, np, i)
pi.SetBounded(true)
pi.Type = t.Elem()
pi.SetType(t.Elem())
// qi := q[i]
qi := nod(OINDEX, nq, i)
qi := ir.Nod(ir.OINDEX, nq, i)
qi.SetBounded(true)
qi.Type = t.Elem()
qi.SetType(t.Elem())
return eq(pi, qi)
}
@ -587,68 +589,68 @@ func geneq(t *types.Type) *obj.LSym {
// Generate a series of checks.
for i := int64(0); i < nelem; i++ {
// if check {} else { goto neq }
nif := nod(OIF, checkIdx(nodintconst(i)), nil)
nif.Rlist.Append(nodSym(OGOTO, nil, neq))
fn.Nbody.Append(nif)
nif := ir.Nod(ir.OIF, checkIdx(nodintconst(i)), nil)
nif.PtrRlist().Append(nodSym(ir.OGOTO, nil, neq))
fn.PtrBody().Append(nif)
}
if last {
fn.Nbody.Append(nod(OAS, nr, checkIdx(nodintconst(nelem))))
fn.PtrBody().Append(ir.Nod(ir.OAS, nr, checkIdx(nodintconst(nelem))))
}
} else {
// Generate a for loop.
// for i := 0; i < nelem; i++
i := temp(types.Types[TINT])
init := nod(OAS, i, nodintconst(0))
cond := nod(OLT, i, nodintconst(nelem))
post := nod(OAS, i, nod(OADD, i, nodintconst(1)))
loop := nod(OFOR, cond, post)
loop.Ninit.Append(init)
i := temp(types.Types[types.TINT])
init := ir.Nod(ir.OAS, i, nodintconst(0))
cond := ir.Nod(ir.OLT, i, nodintconst(nelem))
post := ir.Nod(ir.OAS, i, ir.Nod(ir.OADD, i, nodintconst(1)))
loop := ir.Nod(ir.OFOR, cond, post)
loop.PtrInit().Append(init)
// if eq(pi, qi) {} else { goto neq }
nif := nod(OIF, checkIdx(i), nil)
nif.Rlist.Append(nodSym(OGOTO, nil, neq))
loop.Nbody.Append(nif)
fn.Nbody.Append(loop)
nif := ir.Nod(ir.OIF, checkIdx(i), nil)
nif.PtrRlist().Append(nodSym(ir.OGOTO, nil, neq))
loop.PtrBody().Append(nif)
fn.PtrBody().Append(loop)
if last {
fn.Nbody.Append(nod(OAS, nr, nodbool(true)))
fn.PtrBody().Append(ir.Nod(ir.OAS, nr, nodbool(true)))
}
}
}
switch t.Elem().Etype {
case TSTRING:
case types.TSTRING:
// Do two loops. First, check that all the lengths match (cheap).
// Second, check that all the contents match (expensive).
// TODO: when the array size is small, unroll the length match checks.
checkAll(3, false, func(pi, qi *Node) *Node {
checkAll(3, false, func(pi, qi ir.Node) ir.Node {
// Compare lengths.
eqlen, _ := eqstring(pi, qi)
return eqlen
})
checkAll(1, true, func(pi, qi *Node) *Node {
checkAll(1, true, func(pi, qi ir.Node) ir.Node {
// Compare contents.
_, eqmem := eqstring(pi, qi)
return eqmem
})
case TFLOAT32, TFLOAT64:
checkAll(2, true, func(pi, qi *Node) *Node {
case types.TFLOAT32, types.TFLOAT64:
checkAll(2, true, func(pi, qi ir.Node) ir.Node {
// p[i] == q[i]
return nod(OEQ, pi, qi)
return ir.Nod(ir.OEQ, pi, qi)
})
// TODO: pick apart structs, do them piecemeal too
default:
checkAll(1, true, func(pi, qi *Node) *Node {
checkAll(1, true, func(pi, qi ir.Node) ir.Node {
// p[i] == q[i]
return nod(OEQ, pi, qi)
return ir.Nod(ir.OEQ, pi, qi)
})
}
case TSTRUCT:
case types.TSTRUCT:
// Build a list of conditions to satisfy.
// The conditions are a list-of-lists. Conditions are reorderable
// within each inner list. The outer lists must be evaluated in order.
var conds [][]*Node
conds = append(conds, []*Node{})
and := func(n *Node) {
var conds [][]ir.Node
conds = append(conds, []ir.Node{})
and := func(n ir.Node) {
i := len(conds) - 1
conds[i] = append(conds[i], n)
}
@ -668,21 +670,21 @@ func geneq(t *types.Type) *obj.LSym {
if !IsRegularMemory(f.Type) {
if EqCanPanic(f.Type) {
// Enforce ordering by starting a new set of reorderable conditions.
conds = append(conds, []*Node{})
conds = append(conds, []ir.Node{})
}
p := nodSym(OXDOT, np, f.Sym)
q := nodSym(OXDOT, nq, f.Sym)
p := nodSym(ir.OXDOT, np, f.Sym)
q := nodSym(ir.OXDOT, nq, f.Sym)
switch {
case f.Type.IsString():
eqlen, eqmem := eqstring(p, q)
and(eqlen)
and(eqmem)
default:
and(nod(OEQ, p, q))
and(ir.Nod(ir.OEQ, p, q))
}
if EqCanPanic(f.Type) {
// Also enforce ordering after something that can panic.
conds = append(conds, []*Node{})
conds = append(conds, []ir.Node{})
}
i++
continue
@ -707,10 +709,10 @@ func geneq(t *types.Type) *obj.LSym {
// Sort conditions to put runtime calls last.
// Preserve the rest of the ordering.
var flatConds []*Node
var flatConds []ir.Node
for _, c := range conds {
isCall := func(n *Node) bool {
return n.Op == OCALL || n.Op == OCALLFUNC
isCall := func(n ir.Node) bool {
return n.Op() == ir.OCALL || n.Op() == ir.OCALLFUNC
}
sort.SliceStable(c, func(i, j int) bool {
return !isCall(c[i]) && isCall(c[j])
@ -719,54 +721,54 @@ func geneq(t *types.Type) *obj.LSym {
}
if len(flatConds) == 0 {
fn.Nbody.Append(nod(OAS, nr, nodbool(true)))
fn.PtrBody().Append(ir.Nod(ir.OAS, nr, nodbool(true)))
} else {
for _, c := range flatConds[:len(flatConds)-1] {
// if cond {} else { goto neq }
n := nod(OIF, c, nil)
n.Rlist.Append(nodSym(OGOTO, nil, neq))
fn.Nbody.Append(n)
n := ir.Nod(ir.OIF, c, nil)
n.PtrRlist().Append(nodSym(ir.OGOTO, nil, neq))
fn.PtrBody().Append(n)
}
fn.Nbody.Append(nod(OAS, nr, flatConds[len(flatConds)-1]))
fn.PtrBody().Append(ir.Nod(ir.OAS, nr, flatConds[len(flatConds)-1]))
}
}
// ret:
// return
ret := autolabel(".ret")
fn.Nbody.Append(nodSym(OLABEL, nil, ret))
fn.Nbody.Append(nod(ORETURN, nil, nil))
fn.PtrBody().Append(nodSym(ir.OLABEL, nil, ret))
fn.PtrBody().Append(ir.Nod(ir.ORETURN, nil, nil))
// neq:
// r = false
// return (or goto ret)
fn.Nbody.Append(nodSym(OLABEL, nil, neq))
fn.Nbody.Append(nod(OAS, nr, nodbool(false)))
fn.PtrBody().Append(nodSym(ir.OLABEL, nil, neq))
fn.PtrBody().Append(ir.Nod(ir.OAS, nr, nodbool(false)))
if EqCanPanic(t) || hasCall(fn) {
// Epilogue is large, so share it with the equal case.
fn.Nbody.Append(nodSym(OGOTO, nil, ret))
fn.PtrBody().Append(nodSym(ir.OGOTO, nil, ret))
} else {
// Epilogue is small, so don't bother sharing.
fn.Nbody.Append(nod(ORETURN, nil, nil))
fn.PtrBody().Append(ir.Nod(ir.ORETURN, nil, nil))
}
// TODO(khr): the epilogue size detection condition above isn't perfect.
// We should really do a generic CL that shares epilogues across
// the board. See #24936.
if Debug.r != 0 {
dumplist("geneq body", fn.Nbody)
if base.Flag.LowerR != 0 {
ir.DumpList("geneq body", fn.Body())
}
funcbody()
fn.Func.SetDupok(true)
fn.Func().SetDupok(true)
fn = typecheck(fn, ctxStmt)
Curfn = fn
typecheckslice(fn.Nbody.Slice(), ctxStmt)
typecheckslice(fn.Body().Slice(), ctxStmt)
Curfn = nil
if debug_dclstack != 0 {
if base.Debug.DclStack != 0 {
testdclstack()
}
@ -774,7 +776,7 @@ func geneq(t *types.Type) *obj.LSym {
// We are comparing a struct or an array,
// neither of which can be nil, and our comparisons
// are shallow.
fn.Func.SetNilCheckDisabled(true)
fn.Func().SetNilCheckDisabled(true)
xtop = append(xtop, fn)
// Generate a closure which points at the function we just generated.
@ -783,32 +785,32 @@ func geneq(t *types.Type) *obj.LSym {
return closure
}
func hasCall(n *Node) bool {
if n.Op == OCALL || n.Op == OCALLFUNC {
func hasCall(n ir.Node) bool {
if n.Op() == ir.OCALL || n.Op() == ir.OCALLFUNC {
return true
}
if n.Left != nil && hasCall(n.Left) {
if n.Left() != nil && hasCall(n.Left()) {
return true
}
if n.Right != nil && hasCall(n.Right) {
if n.Right() != nil && hasCall(n.Right()) {
return true
}
for _, x := range n.Ninit.Slice() {
for _, x := range n.Init().Slice() {
if hasCall(x) {
return true
}
}
for _, x := range n.Nbody.Slice() {
for _, x := range n.Body().Slice() {
if hasCall(x) {
return true
}
}
for _, x := range n.List.Slice() {
for _, x := range n.List().Slice() {
if hasCall(x) {
return true
}
}
for _, x := range n.Rlist.Slice() {
for _, x := range n.Rlist().Slice() {
if hasCall(x) {
return true
}
@ -818,10 +820,10 @@ func hasCall(n *Node) bool {
// eqfield returns the node
// p.field == q.field
func eqfield(p *Node, q *Node, field *types.Sym) *Node {
nx := nodSym(OXDOT, p, field)
ny := nodSym(OXDOT, q, field)
ne := nod(OEQ, nx, ny)
func eqfield(p ir.Node, q ir.Node, field *types.Sym) ir.Node {
nx := nodSym(ir.OXDOT, p, field)
ny := nodSym(ir.OXDOT, q, field)
ne := ir.Nod(ir.OEQ, nx, ny)
return ne
}
@ -831,23 +833,23 @@ func eqfield(p *Node, q *Node, field *types.Sym) *Node {
// memequal(s.ptr, t.ptr, len(s))
// which can be used to construct string equality comparison.
// eqlen must be evaluated before eqmem, and shortcircuiting is required.
func eqstring(s, t *Node) (eqlen, eqmem *Node) {
s = conv(s, types.Types[TSTRING])
t = conv(t, types.Types[TSTRING])
sptr := nod(OSPTR, s, nil)
tptr := nod(OSPTR, t, nil)
slen := conv(nod(OLEN, s, nil), types.Types[TUINTPTR])
tlen := conv(nod(OLEN, t, nil), types.Types[TUINTPTR])
func eqstring(s, t ir.Node) (eqlen, eqmem ir.Node) {
s = conv(s, types.Types[types.TSTRING])
t = conv(t, types.Types[types.TSTRING])
sptr := ir.Nod(ir.OSPTR, s, nil)
tptr := ir.Nod(ir.OSPTR, t, nil)
slen := conv(ir.Nod(ir.OLEN, s, nil), types.Types[types.TUINTPTR])
tlen := conv(ir.Nod(ir.OLEN, t, nil), types.Types[types.TUINTPTR])
fn := syslook("memequal")
fn = substArgTypes(fn, types.Types[TUINT8], types.Types[TUINT8])
call := nod(OCALL, fn, nil)
call.List.Append(sptr, tptr, slen.copy())
fn = substArgTypes(fn, types.Types[types.TUINT8], types.Types[types.TUINT8])
call := ir.Nod(ir.OCALL, fn, nil)
call.PtrList().Append(sptr, tptr, ir.Copy(slen))
call = typecheck(call, ctxExpr|ctxMultiOK)
cmp := nod(OEQ, slen, tlen)
cmp := ir.Nod(ir.OEQ, slen, tlen)
cmp = typecheck(cmp, ctxExpr)
cmp.Type = types.Types[TBOOL]
cmp.SetType(types.Types[types.TBOOL])
return cmp, call
}
@ -857,58 +859,58 @@ func eqstring(s, t *Node) (eqlen, eqmem *Node) {
// ifaceeq(s.tab, s.data, t.data) (or efaceeq(s.typ, s.data, t.data), as appropriate)
// which can be used to construct interface equality comparison.
// eqtab must be evaluated before eqdata, and shortcircuiting is required.
func eqinterface(s, t *Node) (eqtab, eqdata *Node) {
if !types.Identical(s.Type, t.Type) {
Fatalf("eqinterface %v %v", s.Type, t.Type)
func eqinterface(s, t ir.Node) (eqtab, eqdata ir.Node) {
if !types.Identical(s.Type(), t.Type()) {
base.Fatalf("eqinterface %v %v", s.Type(), t.Type())
}
// func ifaceeq(tab *uintptr, x, y unsafe.Pointer) (ret bool)
// func efaceeq(typ *uintptr, x, y unsafe.Pointer) (ret bool)
var fn *Node
if s.Type.IsEmptyInterface() {
var fn ir.Node
if s.Type().IsEmptyInterface() {
fn = syslook("efaceeq")
} else {
fn = syslook("ifaceeq")
}
stab := nod(OITAB, s, nil)
ttab := nod(OITAB, t, nil)
sdata := nod(OIDATA, s, nil)
tdata := nod(OIDATA, t, nil)
sdata.Type = types.Types[TUNSAFEPTR]
tdata.Type = types.Types[TUNSAFEPTR]
stab := ir.Nod(ir.OITAB, s, nil)
ttab := ir.Nod(ir.OITAB, t, nil)
sdata := ir.Nod(ir.OIDATA, s, nil)
tdata := ir.Nod(ir.OIDATA, t, nil)
sdata.SetType(types.Types[types.TUNSAFEPTR])
tdata.SetType(types.Types[types.TUNSAFEPTR])
sdata.SetTypecheck(1)
tdata.SetTypecheck(1)
call := nod(OCALL, fn, nil)
call.List.Append(stab, sdata, tdata)
call := ir.Nod(ir.OCALL, fn, nil)
call.PtrList().Append(stab, sdata, tdata)
call = typecheck(call, ctxExpr|ctxMultiOK)
cmp := nod(OEQ, stab, ttab)
cmp := ir.Nod(ir.OEQ, stab, ttab)
cmp = typecheck(cmp, ctxExpr)
cmp.Type = types.Types[TBOOL]
cmp.SetType(types.Types[types.TBOOL])
return cmp, call
}
// eqmem returns the node
// memequal(&p.field, &q.field [, size])
func eqmem(p *Node, q *Node, field *types.Sym, size int64) *Node {
nx := nod(OADDR, nodSym(OXDOT, p, field), nil)
ny := nod(OADDR, nodSym(OXDOT, q, field), nil)
func eqmem(p ir.Node, q ir.Node, field *types.Sym, size int64) ir.Node {
nx := ir.Nod(ir.OADDR, nodSym(ir.OXDOT, p, field), nil)
ny := ir.Nod(ir.OADDR, nodSym(ir.OXDOT, q, field), nil)
nx = typecheck(nx, ctxExpr)
ny = typecheck(ny, ctxExpr)
fn, needsize := eqmemfunc(size, nx.Type.Elem())
call := nod(OCALL, fn, nil)
call.List.Append(nx)
call.List.Append(ny)
fn, needsize := eqmemfunc(size, nx.Type().Elem())
call := ir.Nod(ir.OCALL, fn, nil)
call.PtrList().Append(nx)
call.PtrList().Append(ny)
if needsize {
call.List.Append(nodintconst(size))
call.PtrList().Append(nodintconst(size))
}
return call
}
func eqmemfunc(size int64, t *types.Type) (fn *Node, needsize bool) {
func eqmemfunc(size int64, t *types.Type) (fn ir.Node, needsize bool) {
switch size {
default:
fn = syslook("memequal")
@ -949,7 +951,7 @@ func memrun(t *types.Type, start int) (size int64, next int) {
// by padding.
func ispaddedfield(t *types.Type, i int) bool {
if !t.IsStruct() {
Fatalf("ispaddedfield called non-struct %v", t)
base.Fatalf("ispaddedfield called non-struct %v", t)
}
end := t.Width
if i+1 < t.NumFields() {

123
src/cmd/compile/internal/gc/align.go
View file

@ -6,6 +6,8 @@ package gc
import (
"bytes"
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"fmt"
"sort"
@ -21,7 +23,7 @@ var defercalc int
func Rnd(o int64, r int64) int64 {
if r < 1 || r > 8 || r&(r-1) != 0 {
Fatalf("rnd %d", r)
base.Fatalf("rnd %d", r)
}
return (o + r - 1) &^ (r - 1)
}
@ -39,7 +41,7 @@ func expandiface(t *types.Type) {
case langSupported(1, 14, t.Pkg()) && !explicit && types.Identical(m.Type, prev.Type):
return
default:
yyerrorl(m.Pos, "duplicate method %s", m.Sym.Name)
base.ErrorfAt(m.Pos, "duplicate method %s", m.Sym.Name)
}
methods = append(methods, m)
}
@ -59,7 +61,7 @@ func expandiface(t *types.Type) {
}
if !m.Type.IsInterface() {
yyerrorl(m.Pos, "interface contains embedded non-interface %v", m.Type)
base.ErrorfAt(m.Pos, "interface contains embedded non-interface %v", m.Type)
m.SetBroke(true)
t.SetBroke(true)
// Add to fields so that error messages
@ -74,11 +76,8 @@ func expandiface(t *types.Type) {
// (including broken ones, if any) and add to t's
// method set.
for _, t1 := range m.Type.Fields().Slice() {
f := types.NewField()
f.Pos = m.Pos // preserve embedding position
f.Sym = t1.Sym
f.Type = t1.Type
f.SetBroke(t1.Broke())
// Use m.Pos rather than t1.Pos to preserve embedding position.
f := types.NewField(m.Pos, t1.Sym, t1.Type)
addMethod(f, false)
}
}
@ -86,7 +85,7 @@ func expandiface(t *types.Type) {
sort.Sort(methcmp(methods))
if int64(len(methods)) >= thearch.MAXWIDTH/int64(Widthptr) {
yyerrorl(typePos(t), "interface too large")
base.ErrorfAt(typePos(t), "interface too large")
}
for i, m := range methods {
m.Offset = int64(i) * int64(Widthptr)
@ -119,7 +118,7 @@ func widstruct(errtype *types.Type, t *types.Type, o int64, flag int) int64 {
o = Rnd(o, int64(f.Type.Align))
}
f.Offset = o
if n := asNode(f.Nname); n != nil {
if n := ir.AsNode(f.Nname); n != nil {
// addrescapes has similar code to update these offsets.
// Usually addrescapes runs after widstruct,
// in which case we could drop this,
@ -127,17 +126,17 @@ func widstruct(errtype *types.Type, t *types.Type, o int64, flag int) int64 {
// NOTE(rsc): This comment may be stale.
// It's possible the ordering has changed and this is
// now the common case. I'm not sure.
if n.Name.Param.Stackcopy != nil {
n.Name.Param.Stackcopy.Xoffset = o
n.Xoffset = 0
if n.Name().Param.Stackcopy != nil {
n.Name().Param.Stackcopy.SetOffset(o)
n.SetOffset(0)
} else {
n.Xoffset = o
n.SetOffset(o)
}
}
w := f.Type.Width
if w < 0 {
Fatalf("invalid width %d", f.Type.Width)
base.Fatalf("invalid width %d", f.Type.Width)
}
if w == 0 {
lastzero = o
@ -150,7 +149,7 @@ func widstruct(errtype *types.Type, t *types.Type, o int64, flag int) int64 {
maxwidth = 1<<31 - 1
}
if o >= maxwidth {
yyerrorl(typePos(errtype), "type %L too large", errtype)
base.ErrorfAt(typePos(errtype), "type %L too large", errtype)
o = 8 // small but nonzero
}
}
@ -199,7 +198,7 @@ func findTypeLoop(t *types.Type, path *[]*types.Type) bool {
}
*path = append(*path, t)
if p := asNode(t.Nod).Name.Param; p != nil && findTypeLoop(p.Ntype.Type, path) {
if p := ir.AsNode(t.Nod).Name().Param; p != nil && findTypeLoop(p.Ntype.Type(), path) {
return true
}
*path = (*path)[:len(*path)-1]
@ -207,17 +206,17 @@ func findTypeLoop(t *types.Type, path *[]*types.Type) bool {
// Anonymous type. Recurse on contained types.
switch t.Etype {
case TARRAY:
case types.TARRAY:
if findTypeLoop(t.Elem(), path) {
return true
}
case TSTRUCT:
case types.TSTRUCT:
for _, f := range t.Fields().Slice() {
if findTypeLoop(f.Type, path) {
return true
}
}
case TINTER:
case types.TINTER:
for _, m := range t.Methods().Slice() {
if m.Type.IsInterface() { // embedded interface
if findTypeLoop(m.Type, path) {
@ -238,7 +237,7 @@ func reportTypeLoop(t *types.Type) {
var l []*types.Type
if !findTypeLoop(t, &l) {
Fatalf("failed to find type loop for: %v", t)
base.Fatalf("failed to find type loop for: %v", t)
}
// Rotate loop so that the earliest type declaration is first.
@ -253,11 +252,11 @@ func reportTypeLoop(t *types.Type) {
var msg bytes.Buffer
fmt.Fprintf(&msg, "invalid recursive type %v\n", l[0])
for _, t := range l {
fmt.Fprintf(&msg, "\t%v: %v refers to\n", linestr(typePos(t)), t)
fmt.Fprintf(&msg, "\t%v: %v refers to\n", base.FmtPos(typePos(t)), t)
t.SetBroke(true)
}
fmt.Fprintf(&msg, "\t%v: %v", linestr(typePos(l[0])), l[0])
yyerrorl(typePos(l[0]), msg.String())
fmt.Fprintf(&msg, "\t%v: %v", base.FmtPos(typePos(l[0])), l[0])
base.ErrorfAt(typePos(l[0]), msg.String())
}
// dowidth calculates and stores the size and alignment for t.
@ -271,7 +270,7 @@ func dowidth(t *types.Type) {
return
}
if Widthptr == 0 {
Fatalf("dowidth without betypeinit")
base.Fatalf("dowidth without betypeinit")
}
if t == nil {
@ -295,7 +294,7 @@ func dowidth(t *types.Type) {
return
}
t.SetBroke(true)
Fatalf("width not calculated: %v", t)
base.Fatalf("width not calculated: %v", t)
}
// break infinite recursion if the broken recursive type
@ -307,9 +306,9 @@ func dowidth(t *types.Type) {
// defer checkwidth calls until after we're done
defercheckwidth()
lno := lineno
if asNode(t.Nod) != nil {
lineno = asNode(t.Nod).Pos
lno := base.Pos
if ir.AsNode(t.Nod) != nil {
base.Pos = ir.AsNode(t.Nod).Pos()
}
t.Width = -2
@ -317,7 +316,7 @@ func dowidth(t *types.Type) {
et := t.Etype
switch et {
case TFUNC, TCHAN, TMAP, TSTRING:
case types.TFUNC, types.TCHAN, types.TMAP, types.TSTRING:
break
// simtype == 0 during bootstrap
@ -330,44 +329,44 @@ func dowidth(t *types.Type) {
var w int64
switch et {
default:
Fatalf("dowidth: unknown type: %v", t)
base.Fatalf("dowidth: unknown type: %v", t)
// compiler-specific stuff
case TINT8, TUINT8, TBOOL:
case types.TINT8, types.TUINT8, types.TBOOL:
// bool is int8
w = 1
case TINT16, TUINT16:
case types.TINT16, types.TUINT16:
w = 2
case TINT32, TUINT32, TFLOAT32:
case types.TINT32, types.TUINT32, types.TFLOAT32:
w = 4
case TINT64, TUINT64, TFLOAT64:
case types.TINT64, types.TUINT64, types.TFLOAT64:
w = 8
t.Align = uint8(Widthreg)
case TCOMPLEX64:
case types.TCOMPLEX64:
w = 8
t.Align = 4
case TCOMPLEX128:
case types.TCOMPLEX128:
w = 16
t.Align = uint8(Widthreg)
case TPTR:
case types.TPTR:
w = int64(Widthptr)
checkwidth(t.Elem())
case TUNSAFEPTR:
case types.TUNSAFEPTR:
w = int64(Widthptr)
case TINTER: // implemented as 2 pointers
case types.TINTER: // implemented as 2 pointers
w = 2 * int64(Widthptr)
t.Align = uint8(Widthptr)
expandiface(t)
case TCHAN: // implemented as pointer
case types.TCHAN: // implemented as pointer
w = int64(Widthptr)
checkwidth(t.Elem())
@ -377,35 +376,35 @@ func dowidth(t *types.Type) {
t1 := types.NewChanArgs(t)
checkwidth(t1)
case TCHANARGS:
case types.TCHANARGS:
t1 := t.ChanArgs()
dowidth(t1) // just in case
if t1.Elem().Width >= 1<<16 {
yyerrorl(typePos(t1), "channel element type too large (>64kB)")
base.ErrorfAt(typePos(t1), "channel element type too large (>64kB)")
}
w = 1 // anything will do
case TMAP: // implemented as pointer
case types.TMAP: // implemented as pointer
w = int64(Widthptr)
checkwidth(t.Elem())
checkwidth(t.Key())
case TFORW: // should have been filled in
case types.TFORW: // should have been filled in
reportTypeLoop(t)
w = 1 // anything will do
case TANY:
// dummy type; should be replaced before use.
Fatalf("dowidth any")
case types.TANY:
// not a real type; should be replaced before use.
base.Fatalf("dowidth any")
case TSTRING:
case types.TSTRING:
if sizeofString == 0 {
Fatalf("early dowidth string")
base.Fatalf("early dowidth string")
}
w = sizeofString
t.Align = uint8(Widthptr)
case TARRAY:
case types.TARRAY:
if t.Elem() == nil {
break
}
@ -414,13 +413,13 @@ func dowidth(t *types.Type) {
if t.Elem().Width != 0 {
cap := (uint64(thearch.MAXWIDTH) - 1) / uint64(t.Elem().Width)
if uint64(t.NumElem()) > cap {
yyerrorl(typePos(t), "type %L larger than address space", t)
base.ErrorfAt(typePos(t), "type %L larger than address space", t)
}
}
w = t.NumElem() * t.Elem().Width
t.Align = t.Elem().Align
case TSLICE:
case types.TSLICE:
if t.Elem() == nil {
break
}
@ -428,46 +427,46 @@ func dowidth(t *types.Type) {
checkwidth(t.Elem())
t.Align = uint8(Widthptr)
case TSTRUCT:
case types.TSTRUCT:
if t.IsFuncArgStruct() {
Fatalf("dowidth fn struct %v", t)
base.Fatalf("dowidth fn struct %v", t)
}
w = widstruct(t, t, 0, 1)
// make fake type to check later to
// trigger function argument computation.
case TFUNC:
case types.TFUNC:
t1 := types.NewFuncArgs(t)
checkwidth(t1)
w = int64(Widthptr) // width of func type is pointer
// function is 3 cated structures;
// compute their widths as side-effect.
case TFUNCARGS:
case types.TFUNCARGS:
t1 := t.FuncArgs()
w = widstruct(t1, t1.Recvs(), 0, 0)
w = widstruct(t1, t1.Params(), w, Widthreg)
w = widstruct(t1, t1.Results(), w, Widthreg)
t1.Extra.(*types.Func).Argwid = w
if w%int64(Widthreg) != 0 {
Warn("bad type %v %d\n", t1, w)
base.Warn("bad type %v %d\n", t1, w)
}
t.Align = 1
}
if Widthptr == 4 && w != int64(int32(w)) {
yyerrorl(typePos(t), "type %v too large", t)
base.ErrorfAt(typePos(t), "type %v too large", t)
}
t.Width = w
if t.Align == 0 {
if w == 0 || w > 8 || w&(w-1) != 0 {
Fatalf("invalid alignment for %v", t)
base.Fatalf("invalid alignment for %v", t)
}
t.Align = uint8(w)
}
lineno = lno
base.Pos = lno
resumecheckwidth()
}
@ -498,7 +497,7 @@ func checkwidth(t *types.Type) {
// function arg structs should not be checked
// outside of the enclosing function.
if t.IsFuncArgStruct() {
Fatalf("checkwidth %v", t)
base.Fatalf("checkwidth %v", t)
}
if defercalc == 0 {

73
src/cmd/compile/internal/gc/bexport.go
View file

@ -5,6 +5,7 @@
package gc
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
)
@ -12,6 +13,15 @@ type exporter struct {
marked map[*types.Type]bool // types already seen by markType
}
// markObject visits a reachable object.
func (p *exporter) markObject(n ir.Node) {
if n.Op() == ir.ONAME && n.Class() == ir.PFUNC {
inlFlood(n)
}
p.markType(n.Type())
}
// markType recursively visits types reachable from t to identify
// functions whose inline bodies may be needed.
func (p *exporter) markType(t *types.Type) {
@ -25,10 +35,10 @@ func (p *exporter) markType(t *types.Type) {
// only their unexpanded method set (i.e., exclusive of
// interface embeddings), and the switch statement below
// handles their full method set.
if t.Sym != nil && t.Etype != TINTER {
if t.Sym != nil && t.Etype != types.TINTER {
for _, m := range t.Methods().Slice() {
if types.IsExported(m.Sym.Name) {
p.markType(m.Type)
p.markObject(ir.AsNode(m.Nname))
}
}
}
@ -43,36 +53,31 @@ func (p *exporter) markType(t *types.Type) {
// the user already needs some way to construct values of
// those types.
switch t.Etype {
case TPTR, TARRAY, TSLICE:
case types.TPTR, types.TARRAY, types.TSLICE:
p.markType(t.Elem())
case TCHAN:
case types.TCHAN:
if t.ChanDir().CanRecv() {
p.markType(t.Elem())
}
case TMAP:
case types.TMAP:
p.markType(t.Key())
p.markType(t.Elem())
case TSTRUCT:
case types.TSTRUCT:
for _, f := range t.FieldSlice() {
if types.IsExported(f.Sym.Name) || f.Embedded != 0 {
p.markType(f.Type)
}
}
case TFUNC:
// If t is the type of a function or method, then
// t.Nname() is its ONAME. Mark its inline body and
// any recursively called functions for export.
inlFlood(asNode(t.Nname()))
case types.TFUNC:
for _, f := range t.Results().FieldSlice() {
p.markType(f.Type)
}
case TINTER:
case types.TINTER:
for _, f := range t.FieldSlice() {
if types.IsExported(f.Sym.Name) {
p.markType(f.Type)
@ -129,23 +134,23 @@ func predeclared() []*types.Type {
// elements have been initialized before
predecl = []*types.Type{
// basic types
types.Types[TBOOL],
types.Types[TINT],
types.Types[TINT8],
types.Types[TINT16],
types.Types[TINT32],
types.Types[TINT64],
types.Types[TUINT],
types.Types[TUINT8],
types.Types[TUINT16],
types.Types[TUINT32],
types.Types[TUINT64],
types.Types[TUINTPTR],
types.Types[TFLOAT32],
types.Types[TFLOAT64],
types.Types[TCOMPLEX64],
types.Types[TCOMPLEX128],
types.Types[TSTRING],
types.Types[types.TBOOL],
types.Types[types.TINT],
types.Types[types.TINT8],
types.Types[types.TINT16],
types.Types[types.TINT32],
types.Types[types.TINT64],
types.Types[types.TUINT],
types.Types[types.TUINT8],
types.Types[types.TUINT16],
types.Types[types.TUINT32],
types.Types[types.TUINT64],
types.Types[types.TUINTPTR],
types.Types[types.TFLOAT32],
types.Types[types.TFLOAT64],
types.Types[types.TCOMPLEX64],
types.Types[types.TCOMPLEX128],
types.Types[types.TSTRING],
// basic type aliases
types.Bytetype,
@ -161,16 +166,16 @@ func predeclared() []*types.Type {
types.UntypedFloat,
types.UntypedComplex,
types.UntypedString,
types.Types[TNIL],
types.Types[types.TNIL],
// package unsafe
types.Types[TUNSAFEPTR],
types.Types[types.TUNSAFEPTR],
// invalid type (package contains errors)
types.Types[Txxx],
types.Types[types.Txxx],
// any type, for builtin export data
types.Types[TANY],
types.Types[types.TANY],
}
}
return predecl

15
src/cmd/compile/internal/gc/bimport.go
View file

@ -5,20 +5,15 @@
package gc
import (
"cmd/compile/internal/ir"
"cmd/internal/src"
)
// numImport tracks how often a package with a given name is imported.
// It is used to provide a better error message (by using the package
// path to disambiguate) if a package that appears multiple times with
// the same name appears in an error message.
var numImport = make(map[string]int)
func npos(pos src.XPos, n *Node) *Node {
n.Pos = pos
func npos(pos src.XPos, n ir.Node) ir.Node {
n.SetPos(pos)
return n
}
func builtinCall(op Op) *Node {
return nod(OCALL, mkname(builtinpkg.Lookup(goopnames[op])), nil)
func builtinCall(op ir.Op) ir.Node {
return ir.Nod(ir.OCALL, mkname(ir.BuiltinPkg.Lookup(ir.OpNames[op])), nil)
}

7
src/cmd/compile/internal/gc/bootstrap.go
View file

@ -6,8 +6,11 @@
package gc
import "runtime"
import (
"cmd/compile/internal/base"
"runtime"
)
func startMutexProfiling() {
Fatalf("mutex profiling unavailable in version %v", runtime.Version())
base.Fatalf("mutex profiling unavailable in version %v", runtime.Version())
}

219
src/cmd/compile/internal/gc/builtin.go
View file

@ -2,7 +2,10 @@
package gc
import "cmd/compile/internal/types"
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
)
var runtimeDecls = [...]struct {
name string
@ -205,134 +208,134 @@ func runtimeTypes() []*types.Type {
var typs [131]*types.Type
typs[0] = types.Bytetype
typs[1] = types.NewPtr(typs[0])
typs[2] = types.Types[TANY]
typs[2] = types.Types[types.TANY]
typs[3] = types.NewPtr(typs[2])
typs[4] = functype(nil, []*Node{anonfield(typs[1])}, []*Node{anonfield(typs[3])})
typs[5] = types.Types[TUINTPTR]
typs[6] = types.Types[TBOOL]
typs[7] = types.Types[TUNSAFEPTR]
typs[8] = functype(nil, []*Node{anonfield(typs[5]), anonfield(typs[1]), anonfield(typs[6])}, []*Node{anonfield(typs[7])})
typs[4] = functype(nil, []ir.Node{anonfield(typs[1])}, []ir.Node{anonfield(typs[3])})
typs[5] = types.Types[types.TUINTPTR]
typs[6] = types.Types[types.TBOOL]
typs[7] = types.Types[types.TUNSAFEPTR]
typs[8] = functype(nil, []ir.Node{anonfield(typs[5]), anonfield(typs[1]), anonfield(typs[6])}, []ir.Node{anonfield(typs[7])})
typs[9] = functype(nil, nil, nil)
typs[10] = types.Types[TINTER]
typs[11] = functype(nil, []*Node{anonfield(typs[10])}, nil)
typs[12] = types.Types[TINT32]
typs[10] = types.Types[types.TINTER]
typs[11] = functype(nil, []ir.Node{anonfield(typs[10])}, nil)
typs[12] = types.Types[types.TINT32]
typs[13] = types.NewPtr(typs[12])
typs[14] = functype(nil, []*Node{anonfield(typs[13])}, []*Node{anonfield(typs[10])})
typs[15] = types.Types[TINT]
typs[16] = functype(nil, []*Node{anonfield(typs[15]), anonfield(typs[15])}, nil)
typs[17] = types.Types[TUINT]
typs[18] = functype(nil, []*Node{anonfield(typs[17]), anonfield(typs[15])}, nil)
typs[19] = functype(nil, []*Node{anonfield(typs[6])}, nil)
typs[20] = types.Types[TFLOAT64]
typs[21] = functype(nil, []*Node{anonfield(typs[20])}, nil)
typs[22] = types.Types[TINT64]
typs[23] = functype(nil, []*Node{anonfield(typs[22])}, nil)
typs[24] = types.Types[TUINT64]
typs[25] = functype(nil, []*Node{anonfield(typs[24])}, nil)
typs[26] = types.Types[TCOMPLEX128]
typs[27] = functype(nil, []*Node{anonfield(typs[26])}, nil)
typs[28] = types.Types[TSTRING]
typs[29] = functype(nil, []*Node{anonfield(typs[28])}, nil)
typs[30] = functype(nil, []*Node{anonfield(typs[2])}, nil)
typs[31] = functype(nil, []*Node{anonfield(typs[5])}, nil)
typs[14] = functype(nil, []ir.Node{anonfield(typs[13])}, []ir.Node{anonfield(typs[10])})
typs[15] = types.Types[types.TINT]
typs[16] = functype(nil, []ir.Node{anonfield(typs[15]), anonfield(typs[15])}, nil)
typs[17] = types.Types[types.TUINT]
typs[18] = functype(nil, []ir.Node{anonfield(typs[17]), anonfield(typs[15])}, nil)
typs[19] = functype(nil, []ir.Node{anonfield(typs[6])}, nil)
typs[20] = types.Types[types.TFLOAT64]
typs[21] = functype(nil, []ir.Node{anonfield(typs[20])}, nil)
typs[22] = types.Types[types.TINT64]
typs[23] = functype(nil, []ir.Node{anonfield(typs[22])}, nil)
typs[24] = types.Types[types.TUINT64]
typs[25] = functype(nil, []ir.Node{anonfield(typs[24])}, nil)
typs[26] = types.Types[types.TCOMPLEX128]
typs[27] = functype(nil, []ir.Node{anonfield(typs[26])}, nil)
typs[28] = types.Types[types.TSTRING]
typs[29] = functype(nil, []ir.Node{anonfield(typs[28])}, nil)
typs[30] = functype(nil, []ir.Node{anonfield(typs[2])}, nil)
typs[31] = functype(nil, []ir.Node{anonfield(typs[5])}, nil)
typs[32] = types.NewArray(typs[0], 32)
typs[33] = types.NewPtr(typs[32])
typs[34] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28])}, []*Node{anonfield(typs[28])})
typs[35] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []*Node{anonfield(typs[28])})
typs[36] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []*Node{anonfield(typs[28])})
typs[37] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []*Node{anonfield(typs[28])})
typs[34] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28])}, []ir.Node{anonfield(typs[28])})
typs[35] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []ir.Node{anonfield(typs[28])})
typs[36] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []ir.Node{anonfield(typs[28])})
typs[37] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28]), anonfield(typs[28])}, []ir.Node{anonfield(typs[28])})
typs[38] = types.NewSlice(typs[28])
typs[39] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[38])}, []*Node{anonfield(typs[28])})
typs[40] = functype(nil, []*Node{anonfield(typs[28]), anonfield(typs[28])}, []*Node{anonfield(typs[15])})
typs[39] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[38])}, []ir.Node{anonfield(typs[28])})
typs[40] = functype(nil, []ir.Node{anonfield(typs[28]), anonfield(typs[28])}, []ir.Node{anonfield(typs[15])})
typs[41] = types.NewArray(typs[0], 4)
typs[42] = types.NewPtr(typs[41])
typs[43] = functype(nil, []*Node{anonfield(typs[42]), anonfield(typs[22])}, []*Node{anonfield(typs[28])})
typs[44] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[1]), anonfield(typs[15])}, []*Node{anonfield(typs[28])})
typs[45] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[15])}, []*Node{anonfield(typs[28])})
typs[43] = functype(nil, []ir.Node{anonfield(typs[42]), anonfield(typs[22])}, []ir.Node{anonfield(typs[28])})
typs[44] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[1]), anonfield(typs[15])}, []ir.Node{anonfield(typs[28])})
typs[45] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[15])}, []ir.Node{anonfield(typs[28])})
typs[46] = types.Runetype
typs[47] = types.NewSlice(typs[46])
typs[48] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[47])}, []*Node{anonfield(typs[28])})
typs[48] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[47])}, []ir.Node{anonfield(typs[28])})
typs[49] = types.NewSlice(typs[0])
typs[50] = functype(nil, []*Node{anonfield(typs[33]), anonfield(typs[28])}, []*Node{anonfield(typs[49])})
typs[50] = functype(nil, []ir.Node{anonfield(typs[33]), anonfield(typs[28])}, []ir.Node{anonfield(typs[49])})
typs[51] = types.NewArray(typs[46], 32)
typs[52] = types.NewPtr(typs[51])
typs[53] = functype(nil, []*Node{anonfield(typs[52]), anonfield(typs[28])}, []*Node{anonfield(typs[47])})
typs[54] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[5])}, []*Node{anonfield(typs[15])})
typs[55] = functype(nil, []*Node{anonfield(typs[28]), anonfield(typs[15])}, []*Node{anonfield(typs[46]), anonfield(typs[15])})
typs[56] = functype(nil, []*Node{anonfield(typs[28])}, []*Node{anonfield(typs[15])})
typs[57] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[2])}, []*Node{anonfield(typs[2])})
typs[58] = functype(nil, []*Node{anonfield(typs[2])}, []*Node{anonfield(typs[7])})
typs[59] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[3])}, []*Node{anonfield(typs[2])})
typs[60] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[2])}, []*Node{anonfield(typs[2]), anonfield(typs[6])})
typs[61] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[1]), anonfield(typs[1])}, nil)
typs[62] = functype(nil, []*Node{anonfield(typs[1])}, nil)
typs[53] = functype(nil, []ir.Node{anonfield(typs[52]), anonfield(typs[28])}, []ir.Node{anonfield(typs[47])})
typs[54] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[5])}, []ir.Node{anonfield(typs[15])})
typs[55] = functype(nil, []ir.Node{anonfield(typs[28]), anonfield(typs[15])}, []ir.Node{anonfield(typs[46]), anonfield(typs[15])})
typs[56] = functype(nil, []ir.Node{anonfield(typs[28])}, []ir.Node{anonfield(typs[15])})
typs[57] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[2])}, []ir.Node{anonfield(typs[2])})
typs[58] = functype(nil, []ir.Node{anonfield(typs[2])}, []ir.Node{anonfield(typs[7])})
typs[59] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[3])}, []ir.Node{anonfield(typs[2])})
typs[60] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[2])}, []ir.Node{anonfield(typs[2]), anonfield(typs[6])})
typs[61] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[1]), anonfield(typs[1])}, nil)
typs[62] = functype(nil, []ir.Node{anonfield(typs[1])}, nil)
typs[63] = types.NewPtr(typs[5])
typs[64] = functype(nil, []*Node{anonfield(typs[63]), anonfield(typs[7]), anonfield(typs[7])}, []*Node{anonfield(typs[6])})
typs[65] = types.Types[TUINT32]
typs[66] = functype(nil, nil, []*Node{anonfield(typs[65])})
typs[64] = functype(nil, []ir.Node{anonfield(typs[63]), anonfield(typs[7]), anonfield(typs[7])}, []ir.Node{anonfield(typs[6])})
typs[65] = types.Types[types.TUINT32]
typs[66] = functype(nil, nil, []ir.Node{anonfield(typs[65])})
typs[67] = types.NewMap(typs[2], typs[2])
typs[68] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[22]), anonfield(typs[3])}, []*Node{anonfield(typs[67])})
typs[69] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[3])}, []*Node{anonfield(typs[67])})
typs[70] = functype(nil, nil, []*Node{anonfield(typs[67])})
typs[71] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, []*Node{anonfield(typs[3])})
typs[72] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, []*Node{anonfield(typs[3])})
typs[73] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3]), anonfield(typs[1])}, []*Node{anonfield(typs[3])})
typs[74] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, []*Node{anonfield(typs[3]), anonfield(typs[6])})
typs[75] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, []*Node{anonfield(typs[3]), anonfield(typs[6])})
typs[76] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3]), anonfield(typs[1])}, []*Node{anonfield(typs[3]), anonfield(typs[6])})
typs[77] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, nil)
typs[78] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, nil)
typs[79] = functype(nil, []*Node{anonfield(typs[3])}, nil)
typs[80] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[67])}, nil)
typs[68] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[22]), anonfield(typs[3])}, []ir.Node{anonfield(typs[67])})
typs[69] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[3])}, []ir.Node{anonfield(typs[67])})
typs[70] = functype(nil, nil, []ir.Node{anonfield(typs[67])})
typs[71] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, []ir.Node{anonfield(typs[3])})
typs[72] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, []ir.Node{anonfield(typs[3])})
typs[73] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3]), anonfield(typs[1])}, []ir.Node{anonfield(typs[3])})
typs[74] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, []ir.Node{anonfield(typs[3]), anonfield(typs[6])})
typs[75] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, []ir.Node{anonfield(typs[3]), anonfield(typs[6])})
typs[76] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3]), anonfield(typs[1])}, []ir.Node{anonfield(typs[3]), anonfield(typs[6])})
typs[77] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[3])}, nil)
typs[78] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67]), anonfield(typs[2])}, nil)
typs[79] = functype(nil, []ir.Node{anonfield(typs[3])}, nil)
typs[80] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[67])}, nil)
typs[81] = types.NewChan(typs[2], types.Cboth)
typs[82] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[22])}, []*Node{anonfield(typs[81])})
typs[83] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[15])}, []*Node{anonfield(typs[81])})
typs[82] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[22])}, []ir.Node{anonfield(typs[81])})
typs[83] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[15])}, []ir.Node{anonfield(typs[81])})
typs[84] = types.NewChan(typs[2], types.Crecv)
typs[85] = functype(nil, []*Node{anonfield(typs[84]), anonfield(typs[3])}, nil)
typs[86] = functype(nil, []*Node{anonfield(typs[84]), anonfield(typs[3])}, []*Node{anonfield(typs[6])})
typs[85] = functype(nil, []ir.Node{anonfield(typs[84]), anonfield(typs[3])}, nil)
typs[86] = functype(nil, []ir.Node{anonfield(typs[84]), anonfield(typs[3])}, []ir.Node{anonfield(typs[6])})
typs[87] = types.NewChan(typs[2], types.Csend)
typs[88] = functype(nil, []*Node{anonfield(typs[87]), anonfield(typs[3])}, nil)
typs[88] = functype(nil, []ir.Node{anonfield(typs[87]), anonfield(typs[3])}, nil)
typs[89] = types.NewArray(typs[0], 3)
typs[90] = tostruct([]*Node{namedfield("enabled", typs[6]), namedfield("pad", typs[89]), namedfield("needed", typs[6]), namedfield("cgo", typs[6]), namedfield("alignme", typs[24])})
typs[91] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[3]), anonfield(typs[3])}, nil)
typs[92] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[3])}, nil)
typs[93] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[3]), anonfield(typs[15])}, []*Node{anonfield(typs[15])})
typs[94] = functype(nil, []*Node{anonfield(typs[87]), anonfield(typs[3])}, []*Node{anonfield(typs[6])})
typs[95] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[84])}, []*Node{anonfield(typs[6])})
typs[90] = tostruct([]ir.Node{namedfield("enabled", typs[6]), namedfield("pad", typs[89]), namedfield("needed", typs[6]), namedfield("cgo", typs[6]), namedfield("alignme", typs[24])})
typs[91] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[3]), anonfield(typs[3])}, nil)
typs[92] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[3])}, nil)
typs[93] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[3]), anonfield(typs[15]), anonfield(typs[3]), anonfield(typs[15])}, []ir.Node{anonfield(typs[15])})
typs[94] = functype(nil, []ir.Node{anonfield(typs[87]), anonfield(typs[3])}, []ir.Node{anonfield(typs[6])})
typs[95] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[84])}, []ir.Node{anonfield(typs[6])})
typs[96] = types.NewPtr(typs[6])
typs[97] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[96]), anonfield(typs[84])}, []*Node{anonfield(typs[6])})
typs[98] = functype(nil, []*Node{anonfield(typs[63])}, nil)
typs[99] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[1]), anonfield(typs[63]), anonfield(typs[15]), anonfield(typs[15]), anonfield(typs[6])}, []*Node{anonfield(typs[15]), anonfield(typs[6])})
typs[100] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[15])}, []*Node{anonfield(typs[7])})
typs[101] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[22]), anonfield(typs[22])}, []*Node{anonfield(typs[7])})
typs[102] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[15]), anonfield(typs[7])}, []*Node{anonfield(typs[7])})
typs[97] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[96]), anonfield(typs[84])}, []ir.Node{anonfield(typs[6])})
typs[98] = functype(nil, []ir.Node{anonfield(typs[63])}, nil)
typs[99] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[1]), anonfield(typs[63]), anonfield(typs[15]), anonfield(typs[15]), anonfield(typs[6])}, []ir.Node{anonfield(typs[15]), anonfield(typs[6])})
typs[100] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[15])}, []ir.Node{anonfield(typs[7])})
typs[101] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[22]), anonfield(typs[22])}, []ir.Node{anonfield(typs[7])})
typs[102] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[15]), anonfield(typs[15]), anonfield(typs[7])}, []ir.Node{anonfield(typs[7])})
typs[103] = types.NewSlice(typs[2])
typs[104] = functype(nil, []*Node{anonfield(typs[1]), anonfield(typs[103]), anonfield(typs[15])}, []*Node{anonfield(typs[103])})
typs[105] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[3]), anonfield(typs[5])}, nil)
typs[106] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[5])}, nil)
typs[107] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[3]), anonfield(typs[5])}, []*Node{anonfield(typs[6])})
typs[108] = functype(nil, []*Node{anonfield(typs[3]), anonfield(typs[3])}, []*Node{anonfield(typs[6])})
typs[109] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[7])}, []*Node{anonfield(typs[6])})
typs[110] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[5]), anonfield(typs[5])}, []*Node{anonfield(typs[5])})
typs[111] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[5])}, []*Node{anonfield(typs[5])})
typs[112] = functype(nil, []*Node{anonfield(typs[22]), anonfield(typs[22])}, []*Node{anonfield(typs[22])})
typs[113] = functype(nil, []*Node{anonfield(typs[24]), anonfield(typs[24])}, []*Node{anonfield(typs[24])})
typs[114] = functype(nil, []*Node{anonfield(typs[20])}, []*Node{anonfield(typs[22])})
typs[115] = functype(nil, []*Node{anonfield(typs[20])}, []*Node{anonfield(typs[24])})
typs[116] = functype(nil, []*Node{anonfield(typs[20])}, []*Node{anonfield(typs[65])})
typs[117] = functype(nil, []*Node{anonfield(typs[22])}, []*Node{anonfield(typs[20])})
typs[118] = functype(nil, []*Node{anonfield(typs[24])}, []*Node{anonfield(typs[20])})
typs[119] = functype(nil, []*Node{anonfield(typs[65])}, []*Node{anonfield(typs[20])})
typs[120] = functype(nil, []*Node{anonfield(typs[26]), anonfield(typs[26])}, []*Node{anonfield(typs[26])})
typs[121] = functype(nil, []*Node{anonfield(typs[5]), anonfield(typs[5])}, nil)
typs[122] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[1]), anonfield(typs[5])}, nil)
typs[104] = functype(nil, []ir.Node{anonfield(typs[1]), anonfield(typs[103]), anonfield(typs[15])}, []ir.Node{anonfield(typs[103])})
typs[105] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[3]), anonfield(typs[5])}, nil)
typs[106] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[5])}, nil)
typs[107] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[3]), anonfield(typs[5])}, []ir.Node{anonfield(typs[6])})
typs[108] = functype(nil, []ir.Node{anonfield(typs[3]), anonfield(typs[3])}, []ir.Node{anonfield(typs[6])})
typs[109] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[7])}, []ir.Node{anonfield(typs[6])})
typs[110] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[5]), anonfield(typs[5])}, []ir.Node{anonfield(typs[5])})
typs[111] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[5])}, []ir.Node{anonfield(typs[5])})
typs[112] = functype(nil, []ir.Node{anonfield(typs[22]), anonfield(typs[22])}, []ir.Node{anonfield(typs[22])})
typs[113] = functype(nil, []ir.Node{anonfield(typs[24]), anonfield(typs[24])}, []ir.Node{anonfield(typs[24])})
typs[114] = functype(nil, []ir.Node{anonfield(typs[20])}, []ir.Node{anonfield(typs[22])})
typs[115] = functype(nil, []ir.Node{anonfield(typs[20])}, []ir.Node{anonfield(typs[24])})
typs[116] = functype(nil, []ir.Node{anonfield(typs[20])}, []ir.Node{anonfield(typs[65])})
typs[117] = functype(nil, []ir.Node{anonfield(typs[22])}, []ir.Node{anonfield(typs[20])})
typs[118] = functype(nil, []ir.Node{anonfield(typs[24])}, []ir.Node{anonfield(typs[20])})
typs[119] = functype(nil, []ir.Node{anonfield(typs[65])}, []ir.Node{anonfield(typs[20])})
typs[120] = functype(nil, []ir.Node{anonfield(typs[26]), anonfield(typs[26])}, []ir.Node{anonfield(typs[26])})
typs[121] = functype(nil, []ir.Node{anonfield(typs[5]), anonfield(typs[5])}, nil)
typs[122] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[1]), anonfield(typs[5])}, nil)
typs[123] = types.NewSlice(typs[7])
typs[124] = functype(nil, []*Node{anonfield(typs[7]), anonfield(typs[123])}, nil)
typs[125] = types.Types[TUINT8]
typs[126] = functype(nil, []*Node{anonfield(typs[125]), anonfield(typs[125])}, nil)
typs[127] = types.Types[TUINT16]
typs[128] = functype(nil, []*Node{anonfield(typs[127]), anonfield(typs[127])}, nil)
typs[129] = functype(nil, []*Node{anonfield(typs[65]), anonfield(typs[65])}, nil)
typs[130] = functype(nil, []*Node{anonfield(typs[24]), anonfield(typs[24])}, nil)
typs[124] = functype(nil, []ir.Node{anonfield(typs[7]), anonfield(typs[123])}, nil)
typs[125] = types.Types[types.TUINT8]
typs[126] = functype(nil, []ir.Node{anonfield(typs[125]), anonfield(typs[125])}, nil)
typs[127] = types.Types[types.TUINT16]
typs[128] = functype(nil, []ir.Node{anonfield(typs[127]), anonfield(typs[127])}, nil)
typs[129] = functype(nil, []ir.Node{anonfield(typs[65]), anonfield(typs[65])}, nil)
typs[130] = functype(nil, []ir.Node{anonfield(typs[24]), anonfield(typs[24])}, nil)
return typs[:]
}

12
src/cmd/compile/internal/gc/bv.go
View file

@ -6,6 +6,8 @@ package gc
import (
"math/bits"
"cmd/compile/internal/base"
)
const (
@ -35,7 +37,7 @@ func bvbulkalloc(nbit int32, count int32) bulkBvec {
nword := (nbit + wordBits - 1) / wordBits
size := int64(nword) * int64(count)
if int64(int32(size*4)) != size*4 {
Fatalf("bvbulkalloc too big: nbit=%d count=%d nword=%d size=%d", nbit, count, nword, size)
base.Fatalf("bvbulkalloc too big: nbit=%d count=%d nword=%d size=%d", nbit, count, nword, size)
}
return bulkBvec{
words: make([]uint32, size),
@ -52,7 +54,7 @@ func (b *bulkBvec) next() bvec {
func (bv1 bvec) Eq(bv2 bvec) bool {
if bv1.n != bv2.n {
Fatalf("bvequal: lengths %d and %d are not equal", bv1.n, bv2.n)
base.Fatalf("bvequal: lengths %d and %d are not equal", bv1.n, bv2.n)
}
for i, x := range bv1.b {
if x != bv2.b[i] {
@ -68,7 +70,7 @@ func (dst bvec) Copy(src bvec) {
func (bv bvec) Get(i int32) bool {
if i < 0 || i >= bv.n {
Fatalf("bvget: index %d is out of bounds with length %d\n", i, bv.n)
base.Fatalf("bvget: index %d is out of bounds with length %d\n", i, bv.n)
}
mask := uint32(1 << uint(i%wordBits))
return bv.b[i>>wordShift]&mask != 0
@ -76,7 +78,7 @@ func (bv bvec) Get(i int32) bool {
func (bv bvec) Set(i int32) {
if i < 0 || i >= bv.n {
Fatalf("bvset: index %d is out of bounds with length %d\n", i, bv.n)
base.Fatalf("bvset: index %d is out of bounds with length %d\n", i, bv.n)
}
mask := uint32(1 << uint(i%wordBits))
bv.b[i/wordBits] |= mask
@ -84,7 +86,7 @@ func (bv bvec) Set(i int32) {
func (bv bvec) Unset(i int32) {
if i < 0 || i >= bv.n {
Fatalf("bvunset: index %d is out of bounds with length %d\n", i, bv.n)
base.Fatalf("bvunset: index %d is out of bounds with length %d\n", i, bv.n)
}
mask := uint32(1 << uint(i%wordBits))
bv.b[i/wordBits] &^= mask

429
src/cmd/compile/internal/gc/closure.go
View file

@ -5,37 +5,40 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/syntax"
"cmd/compile/internal/types"
"cmd/internal/src"
"fmt"
)
func (p *noder) funcLit(expr *syntax.FuncLit) *Node {
func (p *noder) funcLit(expr *syntax.FuncLit) ir.Node {
xtype := p.typeExpr(expr.Type)
ntype := p.typeExpr(expr.Type)
xfunc := p.nod(expr, ODCLFUNC, nil, nil)
xfunc.Func.SetIsHiddenClosure(Curfn != nil)
xfunc.Func.Nname = newfuncnamel(p.pos(expr), nblank.Sym) // filled in by typecheckclosure
xfunc.Func.Nname.Name.Param.Ntype = xtype
xfunc.Func.Nname.Name.Defn = xfunc
dcl := p.nod(expr, ir.ODCLFUNC, nil, nil)
fn := dcl.Func()
fn.SetIsHiddenClosure(Curfn != nil)
fn.Nname = newfuncnamel(p.pos(expr), ir.BlankNode.Sym(), fn) // filled in by typecheckclosure
fn.Nname.Name().Param.Ntype = xtype
fn.Nname.Name().Defn = dcl
clo := p.nod(expr, OCLOSURE, nil, nil)
clo.Func.Ntype = ntype
clo := p.nod(expr, ir.OCLOSURE, nil, nil)
clo.SetFunc(fn)
fn.ClosureType = ntype
fn.OClosure = clo
xfunc.Func.Closure = clo
clo.Func.Closure = xfunc
p.funcBody(xfunc, expr.Body)
p.funcBody(dcl, expr.Body)
// closure-specific variables are hanging off the
// ordinary ones in the symbol table; see oldname.
// unhook them.
// make the list of pointers for the closure call.
for _, v := range xfunc.Func.Cvars.Slice() {
for _, v := range fn.ClosureVars.Slice() {
// Unlink from v1; see comment in syntax.go type Param for these fields.
v1 := v.Name.Defn
v1.Name.Param.Innermost = v.Name.Param.Outer
v1 := v.Name().Defn
v1.Name().Param.Innermost = v.Name().Param.Outer
// If the closure usage of v is not dense,
// we need to make it dense; now that we're out
@ -65,7 +68,7 @@ func (p *noder) funcLit(expr *syntax.FuncLit) *Node {
// obtains f3's v, creating it if necessary (as it is in the example).
//
// capturevars will decide whether to use v directly or &v.
v.Name.Param.Outer = oldname(v.Sym)
v.Name().Param.Outer = oldname(v.Sym())
}
return clo
@ -75,60 +78,61 @@ func (p *noder) funcLit(expr *syntax.FuncLit) *Node {
// function associated with the closure.
// TODO: This creation of the named function should probably really be done in a
// separate pass from type-checking.
func typecheckclosure(clo *Node, top int) {
xfunc := clo.Func.Closure
func typecheckclosure(clo ir.Node, top int) {
fn := clo.Func()
dcl := fn.Decl
// Set current associated iota value, so iota can be used inside
// function in ConstSpec, see issue #22344
if x := getIotaValue(); x >= 0 {
xfunc.SetIota(x)
dcl.SetIota(x)
}
clo.Func.Ntype = typecheck(clo.Func.Ntype, ctxType)
clo.Type = clo.Func.Ntype.Type
clo.Func.Top = top
fn.ClosureType = typecheck(fn.ClosureType, ctxType)
clo.SetType(fn.ClosureType.Type())
fn.ClosureCalled = top&ctxCallee != 0
// Do not typecheck xfunc twice, otherwise, we will end up pushing
// xfunc to xtop multiple times, causing initLSym called twice.
// Do not typecheck dcl twice, otherwise, we will end up pushing
// dcl to xtop multiple times, causing initLSym called twice.
// See #30709
if xfunc.Typecheck() == 1 {
if dcl.Typecheck() == 1 {
return
}
for _, ln := range xfunc.Func.Cvars.Slice() {
n := ln.Name.Defn
if !n.Name.Captured() {
n.Name.SetCaptured(true)
if n.Name.Decldepth == 0 {
Fatalf("typecheckclosure: var %S does not have decldepth assigned", n)
for _, ln := range fn.ClosureVars.Slice() {
n := ln.Name().Defn
if !n.Name().Captured() {
n.Name().SetCaptured(true)
if n.Name().Decldepth == 0 {
base.Fatalf("typecheckclosure: var %S does not have decldepth assigned", n)
}
// Ignore assignments to the variable in straightline code
// preceding the first capturing by a closure.
if n.Name.Decldepth == decldepth {
n.Name.SetAssigned(false)
if n.Name().Decldepth == decldepth {
n.Name().SetAssigned(false)
}
}
}
xfunc.Func.Nname.Sym = closurename(Curfn)
setNodeNameFunc(xfunc.Func.Nname)
xfunc = typecheck(xfunc, ctxStmt)
fn.Nname.SetSym(closurename(Curfn))
setNodeNameFunc(fn.Nname)
dcl = typecheck(dcl, ctxStmt)
// Type check the body now, but only if we're inside a function.
// At top level (in a variable initialization: curfn==nil) we're not
// ready to type check code yet; we'll check it later, because the
// underlying closure function we create is added to xtop.
if Curfn != nil && clo.Type != nil {
if Curfn != nil && clo.Type() != nil {
oldfn := Curfn
Curfn = xfunc
Curfn = dcl
olddd := decldepth
decldepth = 1
typecheckslice(xfunc.Nbody.Slice(), ctxStmt)
typecheckslice(dcl.Body().Slice(), ctxStmt)
decldepth = olddd
Curfn = oldfn
}
xtop = append(xtop, xfunc)
xtop = append(xtop, dcl)
}
// globClosgen is like Func.Closgen, but for the global scope.
@ -136,23 +140,23 @@ var globClosgen int
// closurename generates a new unique name for a closure within
// outerfunc.
func closurename(outerfunc *Node) *types.Sym {
func closurename(outerfunc ir.Node) *types.Sym {
outer := "glob."
prefix := "func"
gen := &globClosgen
if outerfunc != nil {
if outerfunc.Func.Closure != nil {
if outerfunc.Func().OClosure != nil {
prefix = ""
}
outer = outerfunc.funcname()
outer = ir.FuncName(outerfunc)
// There may be multiple functions named "_". In those
// cases, we can't use their individual Closgens as it
// would lead to name clashes.
if !outerfunc.Func.Nname.isBlank() {
gen = &outerfunc.Func.Closgen
if !ir.IsBlank(outerfunc.Func().Nname) {
gen = &outerfunc.Func().Closgen
}
}
@ -168,15 +172,14 @@ var capturevarscomplete bool
// by value or by reference.
// We use value capturing for values <= 128 bytes that are never reassigned
// after capturing (effectively constant).
func capturevars(xfunc *Node) {
lno := lineno
lineno = xfunc.Pos
clo := xfunc.Func.Closure
cvars := xfunc.Func.Cvars.Slice()
func capturevars(dcl ir.Node) {
lno := base.Pos
base.Pos = dcl.Pos()
fn := dcl.Func()
cvars := fn.ClosureVars.Slice()
out := cvars[:0]
for _, v := range cvars {
if v.Type == nil {
if v.Type() == nil {
// If v.Type is nil, it means v looked like it
// was going to be used in the closure, but
// isn't. This happens in struct literals like
@ -189,47 +192,47 @@ func capturevars(xfunc *Node) {
// type check the & of closed variables outside the closure,
// so that the outer frame also grabs them and knows they escape.
dowidth(v.Type)
dowidth(v.Type())
outer := v.Name.Param.Outer
outermost := v.Name.Defn
outer := v.Name().Param.Outer
outermost := v.Name().Defn
// out parameters will be assigned to implicitly upon return.
if outermost.Class() != PPARAMOUT && !outermost.Name.Addrtaken() && !outermost.Name.Assigned() && v.Type.Width <= 128 {
v.Name.SetByval(true)
if outermost.Class() != ir.PPARAMOUT && !outermost.Name().Addrtaken() && !outermost.Name().Assigned() && v.Type().Width <= 128 {
v.Name().SetByval(true)
} else {
outermost.Name.SetAddrtaken(true)
outer = nod(OADDR, outer, nil)
outermost.Name().SetAddrtaken(true)
outer = ir.Nod(ir.OADDR, outer, nil)
}
if Debug.m > 1 {
if base.Flag.LowerM > 1 {
var name *types.Sym
if v.Name.Curfn != nil && v.Name.Curfn.Func.Nname != nil {
name = v.Name.Curfn.Func.Nname.Sym
if v.Name().Curfn != nil && v.Name().Curfn.Func().Nname != nil {
name = v.Name().Curfn.Func().Nname.Sym()
}
how := "ref"
if v.Name.Byval() {
if v.Name().Byval() {
how = "value"
}
Warnl(v.Pos, "%v capturing by %s: %v (addr=%v assign=%v width=%d)", name, how, v.Sym, outermost.Name.Addrtaken(), outermost.Name.Assigned(), int32(v.Type.Width))
base.WarnfAt(v.Pos(), "%v capturing by %s: %v (addr=%v assign=%v width=%d)", name, how, v.Sym(), outermost.Name().Addrtaken(), outermost.Name().Assigned(), int32(v.Type().Width))
}
outer = typecheck(outer, ctxExpr)
clo.Func.Enter.Append(outer)
fn.ClosureEnter.Append(outer)
}
xfunc.Func.Cvars.Set(out)
lineno = lno
fn.ClosureVars.Set(out)
base.Pos = lno
}
// transformclosure is called in a separate phase after escape analysis.
// It transform closure bodies to properly reference captured variables.
func transformclosure(xfunc *Node) {
lno := lineno
lineno = xfunc.Pos
clo := xfunc.Func.Closure
func transformclosure(dcl ir.Node) {
lno := base.Pos
base.Pos = dcl.Pos()
fn := dcl.Func()
if clo.Func.Top&ctxCallee != 0 {
if fn.ClosureCalled {
// If the closure is directly called, we transform it to a plain function call
// with variables passed as args. This avoids allocation of a closure object.
// Here we do only a part of the transformation. Walk of OCALLFUNC(OCLOSURE)
@ -246,116 +249,112 @@ func transformclosure(xfunc *Node) {
// }(byval, &byref, 42)
// f is ONAME of the actual function.
f := xfunc.Func.Nname
f := fn.Nname
// We are going to insert captured variables before input args.
var params []*types.Field
var decls []*Node
for _, v := range xfunc.Func.Cvars.Slice() {
if !v.Name.Byval() {
var decls []ir.Node
for _, v := range fn.ClosureVars.Slice() {
if !v.Name().Byval() {
// If v of type T is captured by reference,
// we introduce function param &v *T
// and v remains PAUTOHEAP with &v heapaddr
// (accesses will implicitly deref &v).
addr := newname(lookup("&" + v.Sym.Name))
addr.Type = types.NewPtr(v.Type)
v.Name.Param.Heapaddr = addr
addr := NewName(lookup("&" + v.Sym().Name))
addr.SetType(types.NewPtr(v.Type()))
v.Name().Param.Heapaddr = addr
v = addr
}
v.SetClass(PPARAM)
v.SetClass(ir.PPARAM)
decls = append(decls, v)
fld := types.NewField()
fld.Nname = asTypesNode(v)
fld.Type = v.Type
fld.Sym = v.Sym
fld := types.NewField(src.NoXPos, v.Sym(), v.Type())
fld.Nname = v
params = append(params, fld)
}
if len(params) > 0 {
// Prepend params and decls.
f.Type.Params().SetFields(append(params, f.Type.Params().FieldSlice()...))
xfunc.Func.Dcl = append(decls, xfunc.Func.Dcl...)
f.Type().Params().SetFields(append(params, f.Type().Params().FieldSlice()...))
fn.Dcl = append(decls, fn.Dcl...)
}
dowidth(f.Type)
xfunc.Type = f.Type // update type of ODCLFUNC
dowidth(f.Type())
dcl.SetType(f.Type()) // update type of ODCLFUNC
} else {
// The closure is not called, so it is going to stay as closure.
var body []*Node
var body []ir.Node
offset := int64(Widthptr)
for _, v := range xfunc.Func.Cvars.Slice() {
for _, v := range fn.ClosureVars.Slice() {
// cv refers to the field inside of closure OSTRUCTLIT.
cv := nod(OCLOSUREVAR, nil, nil)
cv := ir.Nod(ir.OCLOSUREVAR, nil, nil)
cv.Type = v.Type
if !v.Name.Byval() {
cv.Type = types.NewPtr(v.Type)
cv.SetType(v.Type())
if !v.Name().Byval() {
cv.SetType(types.NewPtr(v.Type()))
}
offset = Rnd(offset, int64(cv.Type.Align))
cv.Xoffset = offset
offset += cv.Type.Width
offset = Rnd(offset, int64(cv.Type().Align))
cv.SetOffset(offset)
offset += cv.Type().Width
if v.Name.Byval() && v.Type.Width <= int64(2*Widthptr) {
if v.Name().Byval() && v.Type().Width <= int64(2*Widthptr) {
// If it is a small variable captured by value, downgrade it to PAUTO.
v.SetClass(PAUTO)
xfunc.Func.Dcl = append(xfunc.Func.Dcl, v)
body = append(body, nod(OAS, v, cv))
v.SetClass(ir.PAUTO)
fn.Dcl = append(fn.Dcl, v)
body = append(body, ir.Nod(ir.OAS, v, cv))
} else {
// Declare variable holding addresses taken from closure
// and initialize in entry prologue.
addr := newname(lookup("&" + v.Sym.Name))
addr.Type = types.NewPtr(v.Type)
addr.SetClass(PAUTO)
addr.Name.SetUsed(true)
addr.Name.Curfn = xfunc
xfunc.Func.Dcl = append(xfunc.Func.Dcl, addr)
v.Name.Param.Heapaddr = addr
if v.Name.Byval() {
cv = nod(OADDR, cv, nil)
addr := NewName(lookup("&" + v.Sym().Name))
addr.SetType(types.NewPtr(v.Type()))
addr.SetClass(ir.PAUTO)
addr.Name().SetUsed(true)
addr.Name().Curfn = dcl
fn.Dcl = append(fn.Dcl, addr)
v.Name().Param.Heapaddr = addr
if v.Name().Byval() {
cv = ir.Nod(ir.OADDR, cv, nil)
}
body = append(body, nod(OAS, addr, cv))
body = append(body, ir.Nod(ir.OAS, addr, cv))
}
}
if len(body) > 0 {
typecheckslice(body, ctxStmt)
xfunc.Func.Enter.Set(body)
xfunc.Func.SetNeedctxt(true)
fn.Enter.Set(body)
fn.SetNeedctxt(true)
}
}
lineno = lno
base.Pos = lno
}
// hasemptycvars reports whether closure clo has an
// empty list of captured vars.
func hasemptycvars(clo *Node) bool {
xfunc := clo.Func.Closure
return xfunc.Func.Cvars.Len() == 0
func hasemptycvars(clo ir.Node) bool {
return clo.Func().ClosureVars.Len() == 0
}
// closuredebugruntimecheck applies boilerplate checks for debug flags
// and compiling runtime
func closuredebugruntimecheck(clo *Node) {
if Debug_closure > 0 {
xfunc := clo.Func.Closure
if clo.Esc == EscHeap {
Warnl(clo.Pos, "heap closure, captured vars = %v", xfunc.Func.Cvars)
func closuredebugruntimecheck(clo ir.Node) {
if base.Debug.Closure > 0 {
if clo.Esc() == EscHeap {
base.WarnfAt(clo.Pos(), "heap closure, captured vars = %v", clo.Func().ClosureVars)
} else {
Warnl(clo.Pos, "stack closure, captured vars = %v", xfunc.Func.Cvars)
base.WarnfAt(clo.Pos(), "stack closure, captured vars = %v", clo.Func().ClosureVars)
}
}
if compiling_runtime && clo.Esc == EscHeap {
yyerrorl(clo.Pos, "heap-allocated closure, not allowed in runtime")
if base.Flag.CompilingRuntime && clo.Esc() == EscHeap {
base.ErrorfAt(clo.Pos(), "heap-allocated closure, not allowed in runtime")
}
}
// closureType returns the struct type used to hold all the information
// needed in the closure for clo (clo must be a OCLOSURE node).
// The address of a variable of the returned type can be cast to a func.
func closureType(clo *Node) *types.Type {
func closureType(clo ir.Node) *types.Type {
// Create closure in the form of a composite literal.
// supposing the closure captures an int i and a string s
// and has one float64 argument and no results,
@ -369,94 +368,95 @@ func closureType(clo *Node) *types.Type {
// The information appears in the binary in the form of type descriptors;
// the struct is unnamed so that closures in multiple packages with the
// same struct type can share the descriptor.
fields := []*Node{
namedfield(".F", types.Types[TUINTPTR]),
fields := []ir.Node{
namedfield(".F", types.Types[types.TUINTPTR]),
}
for _, v := range clo.Func.Closure.Func.Cvars.Slice() {
typ := v.Type
if !v.Name.Byval() {
for _, v := range clo.Func().ClosureVars.Slice() {
typ := v.Type()
if !v.Name().Byval() {
typ = types.NewPtr(typ)
}
fields = append(fields, symfield(v.Sym, typ))
fields = append(fields, symfield(v.Sym(), typ))
}
typ := tostruct(fields)
typ.SetNoalg(true)
return typ
}
func walkclosure(clo *Node, init *Nodes) *Node {
xfunc := clo.Func.Closure
func walkclosure(clo ir.Node, init *ir.Nodes) ir.Node {
fn := clo.Func()
// If no closure vars, don't bother wrapping.
if hasemptycvars(clo) {
if Debug_closure > 0 {
Warnl(clo.Pos, "closure converted to global")
if base.Debug.Closure > 0 {
base.WarnfAt(clo.Pos(), "closure converted to global")
}
return xfunc.Func.Nname
return fn.Nname
}
closuredebugruntimecheck(clo)
typ := closureType(clo)
clos := nod(OCOMPLIT, nil, typenod(typ))
clos.Esc = clo.Esc
clos.List.Set(append([]*Node{nod(OCFUNC, xfunc.Func.Nname, nil)}, clo.Func.Enter.Slice()...))
clos := ir.Nod(ir.OCOMPLIT, nil, typenod(typ))
clos.SetEsc(clo.Esc())
clos.PtrList().Set(append([]ir.Node{ir.Nod(ir.OCFUNC, fn.Nname, nil)}, fn.ClosureEnter.Slice()...))
clos = nod(OADDR, clos, nil)
clos.Esc = clo.Esc
clos = ir.Nod(ir.OADDR, clos, nil)
clos.SetEsc(clo.Esc())
// Force type conversion from *struct to the func type.
clos = convnop(clos, clo.Type)
clos = convnop(clos, clo.Type())
// non-escaping temp to use, if any.
if x := prealloc[clo]; x != nil {
if !types.Identical(typ, x.Type) {
if !types.Identical(typ, x.Type()) {
panic("closure type does not match order's assigned type")
}
clos.Left.Right = x
clos.Left().SetRight(x)
delete(prealloc, clo)
}
return walkexpr(clos, init)
}
func typecheckpartialcall(fn *Node, sym *types.Sym) {
switch fn.Op {
case ODOTINTER, ODOTMETH:
func typecheckpartialcall(dot ir.Node, sym *types.Sym) {
switch dot.Op() {
case ir.ODOTINTER, ir.ODOTMETH:
break
default:
Fatalf("invalid typecheckpartialcall")
base.Fatalf("invalid typecheckpartialcall")
}
// Create top-level function.
xfunc := makepartialcall(fn, fn.Type, sym)
fn.Func = xfunc.Func
fn.Func.SetWrapper(true)
fn.Right = newname(sym)
fn.Op = OCALLPART
fn.Type = xfunc.Type
dcl := makepartialcall(dot, dot.Type(), sym)
dcl.Func().SetWrapper(true)
dot.SetOp(ir.OCALLPART)
dot.SetRight(NewName(sym))
dot.SetType(dcl.Type())
dot.SetFunc(dcl.Func())
dot.SetOpt(nil) // clear types.Field from ODOTMETH
}
// makepartialcall returns a DCLFUNC node representing the wrapper function (*-fm) needed
// for partial calls.
func makepartialcall(fn *Node, t0 *types.Type, meth *types.Sym) *Node {
rcvrtype := fn.Left.Type
func makepartialcall(dot ir.Node, t0 *types.Type, meth *types.Sym) ir.Node {
rcvrtype := dot.Left().Type()
sym := methodSymSuffix(rcvrtype, meth, "-fm")
if sym.Uniq() {
return asNode(sym.Def)
return ir.AsNode(sym.Def)
}
sym.SetUniq(true)
savecurfn := Curfn
saveLineNo := lineno
saveLineNo := base.Pos
Curfn = nil
// Set line number equal to the line number where the method is declared.
var m *types.Field
if lookdot0(meth, rcvrtype, &m, false) == 1 && m.Pos.IsKnown() {
lineno = m.Pos
base.Pos = m.Pos
}
// Note: !m.Pos.IsKnown() happens for method expressions where
// the method is implicitly declared. The Error method of the
@ -464,73 +464,74 @@ func makepartialcall(fn *Node, t0 *types.Type, meth *types.Sym) *Node {
// number at the use of the method expression in this
// case. See issue 29389.
tfn := nod(OTFUNC, nil, nil)
tfn.List.Set(structargs(t0.Params(), true))
tfn.Rlist.Set(structargs(t0.Results(), false))
tfn := ir.Nod(ir.OTFUNC, nil, nil)
tfn.PtrList().Set(structargs(t0.Params(), true))
tfn.PtrRlist().Set(structargs(t0.Results(), false))
xfunc := dclfunc(sym, tfn)
xfunc.Func.SetDupok(true)
xfunc.Func.SetNeedctxt(true)
dcl := dclfunc(sym, tfn)
fn := dcl.Func()
fn.SetDupok(true)
fn.SetNeedctxt(true)
tfn.Type.SetPkg(t0.Pkg())
tfn.Type().SetPkg(t0.Pkg())
// Declare and initialize variable holding receiver.
cv := nod(OCLOSUREVAR, nil, nil)
cv.Type = rcvrtype
cv.Xoffset = Rnd(int64(Widthptr), int64(cv.Type.Align))
cv := ir.Nod(ir.OCLOSUREVAR, nil, nil)
cv.SetType(rcvrtype)
cv.SetOffset(Rnd(int64(Widthptr), int64(cv.Type().Align)))
ptr := newname(lookup(".this"))
declare(ptr, PAUTO)
ptr.Name.SetUsed(true)
var body []*Node
ptr := NewName(lookup(".this"))
declare(ptr, ir.PAUTO)
ptr.Name().SetUsed(true)
var body []ir.Node
if rcvrtype.IsPtr() || rcvrtype.IsInterface() {
ptr.Type = rcvrtype
body = append(body, nod(OAS, ptr, cv))
ptr.SetType(rcvrtype)
body = append(body, ir.Nod(ir.OAS, ptr, cv))
} else {
ptr.Type = types.NewPtr(rcvrtype)
body = append(body, nod(OAS, ptr, nod(OADDR, cv, nil)))
ptr.SetType(types.NewPtr(rcvrtype))
body = append(body, ir.Nod(ir.OAS, ptr, ir.Nod(ir.OADDR, cv, nil)))
}
call := nod(OCALL, nodSym(OXDOT, ptr, meth), nil)
call.List.Set(paramNnames(tfn.Type))
call.SetIsDDD(tfn.Type.IsVariadic())
call := ir.Nod(ir.OCALL, nodSym(ir.OXDOT, ptr, meth), nil)
call.PtrList().Set(paramNnames(tfn.Type()))
call.SetIsDDD(tfn.Type().IsVariadic())
if t0.NumResults() != 0 {
n := nod(ORETURN, nil, nil)
n.List.Set1(call)
n := ir.Nod(ir.ORETURN, nil, nil)
n.PtrList().Set1(call)
call = n
}
body = append(body, call)
xfunc.Nbody.Set(body)
dcl.PtrBody().Set(body)
funcbody()
xfunc = typecheck(xfunc, ctxStmt)
dcl = typecheck(dcl, ctxStmt)
// Need to typecheck the body of the just-generated wrapper.
// typecheckslice() requires that Curfn is set when processing an ORETURN.
Curfn = xfunc
typecheckslice(xfunc.Nbody.Slice(), ctxStmt)
sym.Def = asTypesNode(xfunc)
xtop = append(xtop, xfunc)
Curfn = dcl
typecheckslice(dcl.Body().Slice(), ctxStmt)
sym.Def = dcl
xtop = append(xtop, dcl)
Curfn = savecurfn
lineno = saveLineNo
base.Pos = saveLineNo
return xfunc
return dcl
}
// partialCallType returns the struct type used to hold all the information
// needed in the closure for n (n must be a OCALLPART node).
// The address of a variable of the returned type can be cast to a func.
func partialCallType(n *Node) *types.Type {
t := tostruct([]*Node{
namedfield("F", types.Types[TUINTPTR]),
namedfield("R", n.Left.Type),
func partialCallType(n ir.Node) *types.Type {
t := tostruct([]ir.Node{
namedfield("F", types.Types[types.TUINTPTR]),
namedfield("R", n.Left().Type()),
})
t.SetNoalg(true)
return t
}
func walkpartialcall(n *Node, init *Nodes) *Node {
func walkpartialcall(n ir.Node, init *ir.Nodes) ir.Node {
// Create closure in the form of a composite literal.
// For x.M with receiver (x) type T, the generated code looks like:
//
@ -538,38 +539,38 @@ func walkpartialcall(n *Node, init *Nodes) *Node {
//
// Like walkclosure above.
if n.Left.Type.IsInterface() {
if n.Left().Type().IsInterface() {
// Trigger panic for method on nil interface now.
// Otherwise it happens in the wrapper and is confusing.
n.Left = cheapexpr(n.Left, init)
n.Left = walkexpr(n.Left, nil)
n.SetLeft(cheapexpr(n.Left(), init))
n.SetLeft(walkexpr(n.Left(), nil))
tab := nod(OITAB, n.Left, nil)
tab := ir.Nod(ir.OITAB, n.Left(), nil)
tab = typecheck(tab, ctxExpr)
c := nod(OCHECKNIL, tab, nil)
c := ir.Nod(ir.OCHECKNIL, tab, nil)
c.SetTypecheck(1)
init.Append(c)
}
typ := partialCallType(n)
clos := nod(OCOMPLIT, nil, typenod(typ))
clos.Esc = n.Esc
clos.List.Set2(nod(OCFUNC, n.Func.Nname, nil), n.Left)
clos := ir.Nod(ir.OCOMPLIT, nil, typenod(typ))
clos.SetEsc(n.Esc())
clos.PtrList().Set2(ir.Nod(ir.OCFUNC, n.Func().Nname, nil), n.Left())
clos = nod(OADDR, clos, nil)
clos.Esc = n.Esc
clos = ir.Nod(ir.OADDR, clos, nil)
clos.SetEsc(n.Esc())
// Force type conversion from *struct to the func type.
clos = convnop(clos, n.Type)
clos = convnop(clos, n.Type())
// non-escaping temp to use, if any.
if x := prealloc[n]; x != nil {
if !types.Identical(typ, x.Type) {
if !types.Identical(typ, x.Type()) {
panic("partial call type does not match order's assigned type")
}
clos.Left.Right = x
clos.Left().SetRight(x)
delete(prealloc, n)
}
@ -578,16 +579,16 @@ func walkpartialcall(n *Node, init *Nodes) *Node {
// callpartMethod returns the *types.Field representing the method
// referenced by method value n.
func callpartMethod(n *Node) *types.Field {
if n.Op != OCALLPART {
Fatalf("expected OCALLPART, got %v", n)
func callpartMethod(n ir.Node) *types.Field {
if n.Op() != ir.OCALLPART {
base.Fatalf("expected OCALLPART, got %v", n)
}
// TODO(mdempsky): Optimize this. If necessary,
// makepartialcall could save m for us somewhere.
var m *types.Field
if lookdot0(n.Right.Sym, n.Left.Type, &m, false) != 1 {
Fatalf("failed to find field for OCALLPART")
if lookdot0(n.Right().Sym(), n.Left().Type(), &m, false) != 1 {
base.Fatalf("failed to find field for OCALLPART")
}
return m

1381
src/cmd/compile/internal/gc/const.go
View file

File diff suppressed because it is too large Load diff

664
src/cmd/compile/internal/gc/dcl.go
View file

File diff suppressed because it is too large Load diff

2
src/cmd/compile/internal/gc/dep_test.go
View file

@ -18,7 +18,7 @@ func TestDeps(t *testing.T) {
}
for _, dep := range strings.Fields(strings.Trim(string(out), "[]")) {
switch dep {
case "go/build", "go/token":
case "go/build", "go/scanner":
// cmd/compile/internal/importer introduces a dependency
// on go/build and go/token; cmd/compile/internal/ uses
// go/constant which uses go/token in its API. Once we

67
src/cmd/compile/internal/gc/dwinl.go
View file

@ -5,6 +5,7 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/internal/dwarf"
"cmd/internal/obj"
"cmd/internal/src"
@ -26,8 +27,8 @@ type varPos struct {
func assembleInlines(fnsym *obj.LSym, dwVars []*dwarf.Var) dwarf.InlCalls {
var inlcalls dwarf.InlCalls
if Debug_gendwarfinl != 0 {
Ctxt.Logf("assembling DWARF inlined routine info for %v\n", fnsym.Name)
if base.Debug.DwarfInl != 0 {
base.Ctxt.Logf("assembling DWARF inlined routine info for %v\n", fnsym.Name)
}
// This maps inline index (from Ctxt.InlTree) to index in inlcalls.Calls
@ -106,7 +107,7 @@ func assembleInlines(fnsym *obj.LSym, dwVars []*dwarf.Var) dwarf.InlCalls {
}
m = makePreinlineDclMap(fnsym)
} else {
ifnlsym := Ctxt.InlTree.InlinedFunction(int(ii - 1))
ifnlsym := base.Ctxt.InlTree.InlinedFunction(int(ii - 1))
m = makePreinlineDclMap(ifnlsym)
}
@ -181,7 +182,7 @@ func assembleInlines(fnsym *obj.LSym, dwVars []*dwarf.Var) dwarf.InlCalls {
}
// Debugging
if Debug_gendwarfinl != 0 {
if base.Debug.DwarfInl != 0 {
dumpInlCalls(inlcalls)
dumpInlVars(dwVars)
}
@ -205,15 +206,15 @@ func assembleInlines(fnsym *obj.LSym, dwVars []*dwarf.Var) dwarf.InlCalls {
// abstract function DIE for an inlined routine imported from a
// previously compiled package.
func genAbstractFunc(fn *obj.LSym) {
ifn := Ctxt.DwFixups.GetPrecursorFunc(fn)
ifn := base.Ctxt.DwFixups.GetPrecursorFunc(fn)
if ifn == nil {
Ctxt.Diag("failed to locate precursor fn for %v", fn)
base.Ctxt.Diag("failed to locate precursor fn for %v", fn)
return
}
if Debug_gendwarfinl != 0 {
Ctxt.Logf("DwarfAbstractFunc(%v)\n", fn.Name)
if base.Debug.DwarfInl != 0 {
base.Ctxt.Logf("DwarfAbstractFunc(%v)\n", fn.Name)
}
Ctxt.DwarfAbstractFunc(ifn, fn, myimportpath)
base.Ctxt.DwarfAbstractFunc(ifn, fn, base.Ctxt.Pkgpath)
}
// Undo any versioning performed when a name was written
@ -235,15 +236,15 @@ func makePreinlineDclMap(fnsym *obj.LSym) map[varPos]int {
dcl := preInliningDcls(fnsym)
m := make(map[varPos]int)
for i, n := range dcl {
pos := Ctxt.InnermostPos(n.Pos)
pos := base.Ctxt.InnermostPos(n.Pos())
vp := varPos{
DeclName: unversion(n.Sym.Name),
DeclName: unversion(n.Sym().Name),
DeclFile: pos.RelFilename(),
DeclLine: pos.RelLine(),
DeclCol: pos.Col(),
}
if _, found := m[vp]; found {
Fatalf("child dcl collision on symbol %s within %v\n", n.Sym.Name, fnsym.Name)
base.Fatalf("child dcl collision on symbol %s within %v\n", n.Sym().Name, fnsym.Name)
}
m[vp] = i
}
@ -260,17 +261,17 @@ func insertInlCall(dwcalls *dwarf.InlCalls, inlIdx int, imap map[int]int) int {
// is one. We do this first so that parents appear before their
// children in the resulting table.
parCallIdx := -1
parInlIdx := Ctxt.InlTree.Parent(inlIdx)
parInlIdx := base.Ctxt.InlTree.Parent(inlIdx)
if parInlIdx >= 0 {
parCallIdx = insertInlCall(dwcalls, parInlIdx, imap)
}
// Create new entry for this inline
inlinedFn := Ctxt.InlTree.InlinedFunction(inlIdx)
callXPos := Ctxt.InlTree.CallPos(inlIdx)
absFnSym := Ctxt.DwFixups.AbsFuncDwarfSym(inlinedFn)
pb := Ctxt.PosTable.Pos(callXPos).Base()
callFileSym := Ctxt.Lookup(pb.SymFilename())
inlinedFn := base.Ctxt.InlTree.InlinedFunction(inlIdx)
callXPos := base.Ctxt.InlTree.CallPos(inlIdx)
absFnSym := base.Ctxt.DwFixups.AbsFuncDwarfSym(inlinedFn)
pb := base.Ctxt.PosTable.Pos(callXPos).Base()
callFileSym := base.Ctxt.Lookup(pb.SymFilename())
ic := dwarf.InlCall{
InlIndex: inlIdx,
CallFile: callFileSym,
@ -298,7 +299,7 @@ func insertInlCall(dwcalls *dwarf.InlCalls, inlIdx int, imap map[int]int) int {
// the index for a node from the inlined body of D will refer to the
// call to D from C. Whew.
func posInlIndex(xpos src.XPos) int {
pos := Ctxt.PosTable.Pos(xpos)
pos := base.Ctxt.PosTable.Pos(xpos)
if b := pos.Base(); b != nil {
ii := b.InliningIndex()
if ii >= 0 {
@ -324,7 +325,7 @@ func addRange(calls []dwarf.InlCall, start, end int64, ii int, imap map[int]int)
// Append range to correct inlined call
callIdx, found := imap[ii]
if !found {
Fatalf("can't find inlIndex %d in imap for prog at %d\n", ii, start)
base.Fatalf("can't find inlIndex %d in imap for prog at %d\n", ii, start)
}
call := &calls[callIdx]
call.Ranges = append(call.Ranges, dwarf.Range{Start: start, End: end})
@ -332,23 +333,23 @@ func addRange(calls []dwarf.InlCall, start, end int64, ii int, imap map[int]int)
func dumpInlCall(inlcalls dwarf.InlCalls, idx, ilevel int) {
for i := 0; i < ilevel; i++ {
Ctxt.Logf(" ")
base.Ctxt.Logf(" ")
}
ic := inlcalls.Calls[idx]
callee := Ctxt.InlTree.InlinedFunction(ic.InlIndex)
Ctxt.Logf(" %d: II:%d (%s) V: (", idx, ic.InlIndex, callee.Name)
callee := base.Ctxt.InlTree.InlinedFunction(ic.InlIndex)
base.Ctxt.Logf(" %d: II:%d (%s) V: (", idx, ic.InlIndex, callee.Name)
for _, f := range ic.InlVars {
Ctxt.Logf(" %v", f.Name)
base.Ctxt.Logf(" %v", f.Name)
}
Ctxt.Logf(" ) C: (")
base.Ctxt.Logf(" ) C: (")
for _, k := range ic.Children {
Ctxt.Logf(" %v", k)
base.Ctxt.Logf(" %v", k)
}
Ctxt.Logf(" ) R:")
base.Ctxt.Logf(" ) R:")
for _, r := range ic.Ranges {
Ctxt.Logf(" [%d,%d)", r.Start, r.End)
base.Ctxt.Logf(" [%d,%d)", r.Start, r.End)
}
Ctxt.Logf("\n")
base.Ctxt.Logf("\n")
for _, k := range ic.Children {
dumpInlCall(inlcalls, k, ilevel+1)
}
@ -373,7 +374,7 @@ func dumpInlVars(dwvars []*dwarf.Var) {
if dwv.IsInAbstract {
ia = 1
}
Ctxt.Logf("V%d: %s CI:%d II:%d IA:%d %s\n", i, dwv.Name, dwv.ChildIndex, dwv.InlIndex-1, ia, typ)
base.Ctxt.Logf("V%d: %s CI:%d II:%d IA:%d %s\n", i, dwv.Name, dwv.ChildIndex, dwv.InlIndex-1, ia, typ)
}
}
@ -410,7 +411,7 @@ func checkInlCall(funcName string, inlCalls dwarf.InlCalls, funcSize int64, idx,
// Callee
ic := inlCalls.Calls[idx]
callee := Ctxt.InlTree.InlinedFunction(ic.InlIndex).Name
callee := base.Ctxt.InlTree.InlinedFunction(ic.InlIndex).Name
calleeRanges := ic.Ranges
// Caller
@ -418,14 +419,14 @@ func checkInlCall(funcName string, inlCalls dwarf.InlCalls, funcSize int64, idx,
parentRanges := []dwarf.Range{dwarf.Range{Start: int64(0), End: funcSize}}
if parentIdx != -1 {
pic := inlCalls.Calls[parentIdx]
caller = Ctxt.InlTree.InlinedFunction(pic.InlIndex).Name
caller = base.Ctxt.InlTree.InlinedFunction(pic.InlIndex).Name
parentRanges = pic.Ranges
}
// Callee ranges contained in caller ranges?
c, m := rangesContainsAll(parentRanges, calleeRanges)
if !c {
Fatalf("** malformed inlined routine range in %s: caller %s callee %s II=%d %s\n", funcName, caller, callee, idx, m)
base.Fatalf("** malformed inlined routine range in %s: caller %s callee %s II=%d %s\n", funcName, caller, callee, idx, m)
}
// Now visit kids

107
src/cmd/compile/internal/gc/embed.go
View file

@ -5,40 +5,19 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/syntax"
"cmd/compile/internal/types"
"cmd/internal/obj"
"encoding/json"
"io/ioutil"
"log"
"path"
"sort"
"strconv"
"strings"
)
var embedlist []*Node
var embedCfg struct {
Patterns map[string][]string
Files map[string]string
}
func readEmbedCfg(file string) {
data, err := ioutil.ReadFile(file)
if err != nil {
log.Fatalf("-embedcfg: %v", err)
}
if err := json.Unmarshal(data, &embedCfg); err != nil {
log.Fatalf("%s: %v", file, err)
}
if embedCfg.Patterns == nil {
log.Fatalf("%s: invalid embedcfg: missing Patterns", file)
}
if embedCfg.Files == nil {
log.Fatalf("%s: invalid embedcfg: missing Files", file)
}
}
var embedlist []ir.Node
const (
embedUnknown = iota
@ -49,7 +28,7 @@ const (
var numLocalEmbed int
func varEmbed(p *noder, names []*Node, typ *Node, exprs []*Node, embeds []PragmaEmbed) (newExprs []*Node) {
func varEmbed(p *noder, names []ir.Node, typ ir.Node, exprs []ir.Node, embeds []PragmaEmbed) (newExprs []ir.Node) {
haveEmbed := false
for _, decl := range p.file.DeclList {
imp, ok := decl.(*syntax.ImportDecl)
@ -66,30 +45,30 @@ func varEmbed(p *noder, names []*Node, typ *Node, exprs []*Node, embeds []Pragma
pos := embeds[0].Pos
if !haveEmbed {
p.yyerrorpos(pos, "invalid go:embed: missing import \"embed\"")
p.errorAt(pos, "invalid go:embed: missing import \"embed\"")
return exprs
}
if embedCfg.Patterns == nil {
p.yyerrorpos(pos, "invalid go:embed: build system did not supply embed configuration")
if base.Flag.Cfg.Embed.Patterns == nil {
p.errorAt(pos, "invalid go:embed: build system did not supply embed configuration")
return exprs
}
if len(names) > 1 {
p.yyerrorpos(pos, "go:embed cannot apply to multiple vars")
p.errorAt(pos, "go:embed cannot apply to multiple vars")
return exprs
}
if len(exprs) > 0 {
p.yyerrorpos(pos, "go:embed cannot apply to var with initializer")
p.errorAt(pos, "go:embed cannot apply to var with initializer")
return exprs
}
if typ == nil {
// Should not happen, since len(exprs) == 0 now.
p.yyerrorpos(pos, "go:embed cannot apply to var without type")
p.errorAt(pos, "go:embed cannot apply to var without type")
return exprs
}
kind := embedKindApprox(typ)
if kind == embedUnknown {
p.yyerrorpos(pos, "go:embed cannot apply to var of type %v", typ)
p.errorAt(pos, "go:embed cannot apply to var of type %v", typ)
return exprs
}
@ -98,13 +77,13 @@ func varEmbed(p *noder, names []*Node, typ *Node, exprs []*Node, embeds []Pragma
var list []string
for _, e := range embeds {
for _, pattern := range e.Patterns {
files, ok := embedCfg.Patterns[pattern]
files, ok := base.Flag.Cfg.Embed.Patterns[pattern]
if !ok {
p.yyerrorpos(e.Pos, "invalid go:embed: build system did not map pattern: %s", pattern)
p.errorAt(e.Pos, "invalid go:embed: build system did not map pattern: %s", pattern)
}
for _, file := range files {
if embedCfg.Files[file] == "" {
p.yyerrorpos(e.Pos, "invalid go:embed: build system did not map file: %s", file)
if base.Flag.Cfg.Embed.Files[file] == "" {
p.errorAt(e.Pos, "invalid go:embed: build system did not map file: %s", file)
continue
}
if !have[file] {
@ -126,23 +105,23 @@ func varEmbed(p *noder, names []*Node, typ *Node, exprs []*Node, embeds []Pragma
if kind == embedString || kind == embedBytes {
if len(list) > 1 {
p.yyerrorpos(pos, "invalid go:embed: multiple files for type %v", typ)
p.errorAt(pos, "invalid go:embed: multiple files for type %v", typ)
return exprs
}
}
v := names[0]
if dclcontext != PEXTERN {
if dclcontext != ir.PEXTERN {
numLocalEmbed++
v = newnamel(v.Pos, lookupN("embed.", numLocalEmbed))
v.Sym.Def = asTypesNode(v)
v.Name.Param.Ntype = typ
v.SetClass(PEXTERN)
v = ir.NewNameAt(v.Pos(), lookupN("embed.", numLocalEmbed))
v.Sym().Def = v
v.Name().Param.Ntype = typ
v.SetClass(ir.PEXTERN)
externdcl = append(externdcl, v)
exprs = []*Node{v}
exprs = []ir.Node{v}
}
v.Name.Param.SetEmbedFiles(list)
v.Name().Param.SetEmbedFiles(list)
embedlist = append(embedlist, v)
return exprs
}
@ -151,18 +130,18 @@ func varEmbed(p *noder, names []*Node, typ *Node, exprs []*Node, embeds []Pragma
// The match is approximate because we haven't done scope resolution yet and
// can't tell whether "string" and "byte" really mean "string" and "byte".
// The result must be confirmed later, after type checking, using embedKind.
func embedKindApprox(typ *Node) int {
if typ.Sym != nil && typ.Sym.Name == "FS" && (typ.Sym.Pkg.Path == "embed" || (typ.Sym.Pkg == localpkg && myimportpath == "embed")) {
func embedKindApprox(typ ir.Node) int {
if typ.Sym() != nil && typ.Sym().Name == "FS" && (typ.Sym().Pkg.Path == "embed" || (typ.Sym().Pkg == ir.LocalPkg && base.Ctxt.Pkgpath == "embed")) {
return embedFiles
}
// These are not guaranteed to match only string and []byte -
// maybe the local package has redefined one of those words.
// But it's the best we can do now during the noder.
// The stricter check happens later, in initEmbed calling embedKind.
if typ.Sym != nil && typ.Sym.Name == "string" && typ.Sym.Pkg == localpkg {
if typ.Sym() != nil && typ.Sym().Name == "string" && typ.Sym().Pkg == ir.LocalPkg {
return embedString
}
if typ.Op == OTARRAY && typ.Left == nil && typ.Right.Sym != nil && typ.Right.Sym.Name == "byte" && typ.Right.Sym.Pkg == localpkg {
if typ.Op() == ir.OTARRAY && typ.Left() == nil && typ.Right().Sym() != nil && typ.Right().Sym().Name == "byte" && typ.Right().Sym().Pkg == ir.LocalPkg {
return embedBytes
}
return embedUnknown
@ -170,10 +149,10 @@ func embedKindApprox(typ *Node) int {
// embedKind determines the kind of embedding variable.
func embedKind(typ *types.Type) int {
if typ.Sym != nil && typ.Sym.Name == "FS" && (typ.Sym.Pkg.Path == "embed" || (typ.Sym.Pkg == localpkg && myimportpath == "embed")) {
if typ.Sym != nil && typ.Sym.Name == "FS" && (typ.Sym.Pkg.Path == "embed" || (typ.Sym.Pkg == ir.LocalPkg && base.Ctxt.Pkgpath == "embed")) {
return embedFiles
}
if typ == types.Types[TSTRING] {
if typ == types.Types[types.TSTRING] {
return embedString
}
if typ.Sym == nil && typ.IsSlice() && typ.Elem() == types.Bytetype {
@ -213,19 +192,19 @@ func dumpembeds() {
// initEmbed emits the init data for a //go:embed variable,
// which is either a string, a []byte, or an embed.FS.
func initEmbed(v *Node) {
files := v.Name.Param.EmbedFiles()
switch kind := embedKind(v.Type); kind {
func initEmbed(v ir.Node) {
files := v.Name().Param.EmbedFiles()
switch kind := embedKind(v.Type()); kind {
case embedUnknown:
yyerrorl(v.Pos, "go:embed cannot apply to var of type %v", v.Type)
base.ErrorfAt(v.Pos(), "go:embed cannot apply to var of type %v", v.Type())
case embedString, embedBytes:
file := files[0]
fsym, size, err := fileStringSym(v.Pos, embedCfg.Files[file], kind == embedString, nil)
fsym, size, err := fileStringSym(v.Pos(), base.Flag.Cfg.Embed.Files[file], kind == embedString, nil)
if err != nil {
yyerrorl(v.Pos, "embed %s: %v", file, err)
base.ErrorfAt(v.Pos(), "embed %s: %v", file, err)
}
sym := v.Sym.Linksym()
sym := v.Sym().Linksym()
off := 0
off = dsymptr(sym, off, fsym, 0) // data string
off = duintptr(sym, off, uint64(size)) // len
@ -234,7 +213,7 @@ func initEmbed(v *Node) {
}
case embedFiles:
slicedata := Ctxt.Lookup(`"".` + v.Sym.Name + `.files`)
slicedata := base.Ctxt.Lookup(`"".` + v.Sym().Name + `.files`)
off := 0
// []files pointed at by Files
off = dsymptr(slicedata, off, slicedata, 3*Widthptr) // []file, pointing just past slice
@ -249,7 +228,7 @@ func initEmbed(v *Node) {
const hashSize = 16
hash := make([]byte, hashSize)
for _, file := range files {
off = dsymptr(slicedata, off, stringsym(v.Pos, file), 0) // file string
off = dsymptr(slicedata, off, stringsym(v.Pos(), file), 0) // file string
off = duintptr(slicedata, off, uint64(len(file)))
if strings.HasSuffix(file, "/") {
// entry for directory - no data
@ -257,17 +236,17 @@ func initEmbed(v *Node) {
off = duintptr(slicedata, off, 0)
off += hashSize
} else {
fsym, size, err := fileStringSym(v.Pos, embedCfg.Files[file], true, hash)
fsym, size, err := fileStringSym(v.Pos(), base.Flag.Cfg.Embed.Files[file], true, hash)
if err != nil {
yyerrorl(v.Pos, "embed %s: %v", file, err)
base.ErrorfAt(v.Pos(), "embed %s: %v", file, err)
}
off = dsymptr(slicedata, off, fsym, 0) // data string
off = duintptr(slicedata, off, uint64(size))
off = int(slicedata.WriteBytes(Ctxt, int64(off), hash))
off = int(slicedata.WriteBytes(base.Ctxt, int64(off), hash))
}
}
ggloblsym(slicedata, int32(off), obj.RODATA|obj.LOCAL)
sym := v.Sym.Linksym()
sym := v.Sym().Linksym()
dsymptr(sym, 0, slicedata, 0)
}
}

472
src/cmd/compile/internal/gc/esc.go
View file

@ -1,472 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
import (
"cmd/compile/internal/types"
"fmt"
)
func escapes(all []*Node) {
visitBottomUp(all, escapeFuncs)
}
const (
EscFuncUnknown = 0 + iota
EscFuncPlanned
EscFuncStarted
EscFuncTagged
)
func min8(a, b int8) int8 {
if a < b {
return a
}
return b
}
func max8(a, b int8) int8 {
if a > b {
return a
}
return b
}
const (
EscUnknown = iota
EscNone // Does not escape to heap, result, or parameters.
EscHeap // Reachable from the heap
EscNever // By construction will not escape.
)
// funcSym returns fn.Func.Nname.Sym if no nils are encountered along the way.
func funcSym(fn *Node) *types.Sym {
if fn == nil || fn.Func.Nname == nil {
return nil
}
return fn.Func.Nname.Sym
}
// Mark labels that have no backjumps to them as not increasing e.loopdepth.
// Walk hasn't generated (goto|label).Left.Sym.Label yet, so we'll cheat
// and set it to one of the following two. Then in esc we'll clear it again.
var (
looping Node
nonlooping Node
)
func isSliceSelfAssign(dst, src *Node) bool {
// Detect the following special case.
//
// func (b *Buffer) Foo() {
// n, m := ...
// b.buf = b.buf[n:m]
// }
//
// This assignment is a no-op for escape analysis,
// it does not store any new pointers into b that were not already there.
// However, without this special case b will escape, because we assign to OIND/ODOTPTR.
// Here we assume that the statement will not contain calls,
// that is, that order will move any calls to init.
// Otherwise base ONAME value could change between the moments
// when we evaluate it for dst and for src.
// dst is ONAME dereference.
if dst.Op != ODEREF && dst.Op != ODOTPTR || dst.Left.Op != ONAME {
return false
}
// src is a slice operation.
switch src.Op {
case OSLICE, OSLICE3, OSLICESTR:
// OK.
case OSLICEARR, OSLICE3ARR:
// Since arrays are embedded into containing object,
// slice of non-pointer array will introduce a new pointer into b that was not already there
// (pointer to b itself). After such assignment, if b contents escape,
// b escapes as well. If we ignore such OSLICEARR, we will conclude
// that b does not escape when b contents do.
//
// Pointer to an array is OK since it's not stored inside b directly.
// For slicing an array (not pointer to array), there is an implicit OADDR.
// We check that to determine non-pointer array slicing.
if src.Left.Op == OADDR {
return false
}
default:
return false
}
// slice is applied to ONAME dereference.
if src.Left.Op != ODEREF && src.Left.Op != ODOTPTR || src.Left.Left.Op != ONAME {
return false
}
// dst and src reference the same base ONAME.
return dst.Left == src.Left.Left
}
// isSelfAssign reports whether assignment from src to dst can
// be ignored by the escape analysis as it's effectively a self-assignment.
func isSelfAssign(dst, src *Node) bool {
if isSliceSelfAssign(dst, src) {
return true
}
// Detect trivial assignments that assign back to the same object.
//
// It covers these cases:
// val.x = val.y
// val.x[i] = val.y[j]
// val.x1.x2 = val.x1.y2
// ... etc
//
// These assignments do not change assigned object lifetime.
if dst == nil || src == nil || dst.Op != src.Op {
return false
}
switch dst.Op {
case ODOT, ODOTPTR:
// Safe trailing accessors that are permitted to differ.
case OINDEX:
if mayAffectMemory(dst.Right) || mayAffectMemory(src.Right) {
return false
}
default:
return false
}
// The expression prefix must be both "safe" and identical.
return samesafeexpr(dst.Left, src.Left)
}
// mayAffectMemory reports whether evaluation of n may affect the program's
// memory state. If the expression can't affect memory state, then it can be
// safely ignored by the escape analysis.
func mayAffectMemory(n *Node) bool {
// We may want to use a list of "memory safe" ops instead of generally
// "side-effect free", which would include all calls and other ops that can
// allocate or change global state. For now, it's safer to start with the latter.
//
// We're ignoring things like division by zero, index out of range,
// and nil pointer dereference here.
switch n.Op {
case ONAME, OCLOSUREVAR, OLITERAL:
return false
// Left+Right group.
case OINDEX, OADD, OSUB, OOR, OXOR, OMUL, OLSH, ORSH, OAND, OANDNOT, ODIV, OMOD:
return mayAffectMemory(n.Left) || mayAffectMemory(n.Right)
// Left group.
case ODOT, ODOTPTR, ODEREF, OCONVNOP, OCONV, OLEN, OCAP,
ONOT, OBITNOT, OPLUS, ONEG, OALIGNOF, OOFFSETOF, OSIZEOF:
return mayAffectMemory(n.Left)
default:
return true
}
}
// heapAllocReason returns the reason the given Node must be heap
// allocated, or the empty string if it doesn't.
func heapAllocReason(n *Node) string {
if n.Type == nil {
return ""
}
// Parameters are always passed via the stack.
if n.Op == ONAME && (n.Class() == PPARAM || n.Class() == PPARAMOUT) {
return ""
}
if n.Type.Width > maxStackVarSize {
return "too large for stack"
}
if (n.Op == ONEW || n.Op == OPTRLIT) && n.Type.Elem().Width >= maxImplicitStackVarSize {
return "too large for stack"
}
if n.Op == OCLOSURE && closureType(n).Size() >= maxImplicitStackVarSize {
return "too large for stack"
}
if n.Op == OCALLPART && partialCallType(n).Size() >= maxImplicitStackVarSize {
return "too large for stack"
}
if n.Op == OMAKESLICE {
r := n.Right
if r == nil {
r = n.Left
}
if !smallintconst(r) {
return "non-constant size"
}
if t := n.Type; t.Elem().Width != 0 && r.Int64Val() >= maxImplicitStackVarSize/t.Elem().Width {
return "too large for stack"
}
}
return ""
}
// addrescapes tags node n as having had its address taken
// by "increasing" the "value" of n.Esc to EscHeap.
// Storage is allocated as necessary to allow the address
// to be taken.
func addrescapes(n *Node) {
switch n.Op {
default:
// Unexpected Op, probably due to a previous type error. Ignore.
case ODEREF, ODOTPTR:
// Nothing to do.
case ONAME:
if n == nodfp {
break
}
// if this is a tmpname (PAUTO), it was tagged by tmpname as not escaping.
// on PPARAM it means something different.
if n.Class() == PAUTO && n.Esc == EscNever {
break
}
// If a closure reference escapes, mark the outer variable as escaping.
if n.Name.IsClosureVar() {
addrescapes(n.Name.Defn)
break
}
if n.Class() != PPARAM && n.Class() != PPARAMOUT && n.Class() != PAUTO {
break
}
// This is a plain parameter or local variable that needs to move to the heap,
// but possibly for the function outside the one we're compiling.
// That is, if we have:
//
// func f(x int) {
// func() {
// global = &x
// }
// }
//
// then we're analyzing the inner closure but we need to move x to the
// heap in f, not in the inner closure. Flip over to f before calling moveToHeap.
oldfn := Curfn
Curfn = n.Name.Curfn
if Curfn.Func.Closure != nil && Curfn.Op == OCLOSURE {
Curfn = Curfn.Func.Closure
}
ln := lineno
lineno = Curfn.Pos
moveToHeap(n)
Curfn = oldfn
lineno = ln
// ODOTPTR has already been introduced,
// so these are the non-pointer ODOT and OINDEX.
// In &x[0], if x is a slice, then x does not
// escape--the pointer inside x does, but that
// is always a heap pointer anyway.
case ODOT, OINDEX, OPAREN, OCONVNOP:
if !n.Left.Type.IsSlice() {
addrescapes(n.Left)
}
}
}
// moveToHeap records the parameter or local variable n as moved to the heap.
func moveToHeap(n *Node) {
if Debug.r != 0 {
Dump("MOVE", n)
}
if compiling_runtime {
yyerror("%v escapes to heap, not allowed in runtime", n)
}
if n.Class() == PAUTOHEAP {
Dump("n", n)
Fatalf("double move to heap")
}
// Allocate a local stack variable to hold the pointer to the heap copy.
// temp will add it to the function declaration list automatically.
heapaddr := temp(types.NewPtr(n.Type))
heapaddr.Sym = lookup("&" + n.Sym.Name)
heapaddr.Orig.Sym = heapaddr.Sym
heapaddr.Pos = n.Pos
// Unset AutoTemp to persist the &foo variable name through SSA to
// liveness analysis.
// TODO(mdempsky/drchase): Cleaner solution?
heapaddr.Name.SetAutoTemp(false)
// Parameters have a local stack copy used at function start/end
// in addition to the copy in the heap that may live longer than
// the function.
if n.Class() == PPARAM || n.Class() == PPARAMOUT {
if n.Xoffset == BADWIDTH {
Fatalf("addrescapes before param assignment")
}
// We rewrite n below to be a heap variable (indirection of heapaddr).
// Preserve a copy so we can still write code referring to the original,
// and substitute that copy into the function declaration list
// so that analyses of the local (on-stack) variables use it.
stackcopy := newname(n.Sym)
stackcopy.Type = n.Type
stackcopy.Xoffset = n.Xoffset
stackcopy.SetClass(n.Class())
stackcopy.Name.Param.Heapaddr = heapaddr
if n.Class() == PPARAMOUT {
// Make sure the pointer to the heap copy is kept live throughout the function.
// The function could panic at any point, and then a defer could recover.
// Thus, we need the pointer to the heap copy always available so the
// post-deferreturn code can copy the return value back to the stack.
// See issue 16095.
heapaddr.Name.SetIsOutputParamHeapAddr(true)
}
n.Name.Param.Stackcopy = stackcopy
// Substitute the stackcopy into the function variable list so that
// liveness and other analyses use the underlying stack slot
// and not the now-pseudo-variable n.
found := false
for i, d := range Curfn.Func.Dcl {
if d == n {
Curfn.Func.Dcl[i] = stackcopy
found = true
break
}
// Parameters are before locals, so can stop early.
// This limits the search even in functions with many local variables.
if d.Class() == PAUTO {
break
}
}
if !found {
Fatalf("cannot find %v in local variable list", n)
}
Curfn.Func.Dcl = append(Curfn.Func.Dcl, n)
}
// Modify n in place so that uses of n now mean indirection of the heapaddr.
n.SetClass(PAUTOHEAP)
n.Xoffset = 0
n.Name.Param.Heapaddr = heapaddr
n.Esc = EscHeap
if Debug.m != 0 {
Warnl(n.Pos, "moved to heap: %v", n)
}
}
// This special tag is applied to uintptr variables
// that we believe may hold unsafe.Pointers for
// calls into assembly functions.
const unsafeUintptrTag = "unsafe-uintptr"
// This special tag is applied to uintptr parameters of functions
// marked go:uintptrescapes.
const uintptrEscapesTag = "uintptr-escapes"
func (e *Escape) paramTag(fn *Node, narg int, f *types.Field) string {
name := func() string {
if f.Sym != nil {
return f.Sym.Name
}
return fmt.Sprintf("arg#%d", narg)
}
if fn.Nbody.Len() == 0 {
// Assume that uintptr arguments must be held live across the call.
// This is most important for syscall.Syscall.
// See golang.org/issue/13372.
// This really doesn't have much to do with escape analysis per se,
// but we are reusing the ability to annotate an individual function
// argument and pass those annotations along to importing code.
if f.Type.IsUintptr() {
if Debug.m != 0 {
Warnl(f.Pos, "assuming %v is unsafe uintptr", name())
}
return unsafeUintptrTag
}
if !f.Type.HasPointers() { // don't bother tagging for scalars
return ""
}
var esc EscLeaks
// External functions are assumed unsafe, unless
// //go:noescape is given before the declaration.
if fn.Func.Pragma&Noescape != 0 {
if Debug.m != 0 && f.Sym != nil {
Warnl(f.Pos, "%v does not escape", name())
}
} else {
if Debug.m != 0 && f.Sym != nil {
Warnl(f.Pos, "leaking param: %v", name())
}
esc.AddHeap(0)
}
return esc.Encode()
}
if fn.Func.Pragma&UintptrEscapes != 0 {
if f.Type.IsUintptr() {
if Debug.m != 0 {
Warnl(f.Pos, "marking %v as escaping uintptr", name())
}
return uintptrEscapesTag
}
if f.IsDDD() && f.Type.Elem().IsUintptr() {
// final argument is ...uintptr.
if Debug.m != 0 {
Warnl(f.Pos, "marking %v as escaping ...uintptr", name())
}
return uintptrEscapesTag
}
}
if !f.Type.HasPointers() { // don't bother tagging for scalars
return ""
}
// Unnamed parameters are unused and therefore do not escape.
if f.Sym == nil || f.Sym.IsBlank() {
var esc EscLeaks
return esc.Encode()
}
n := asNode(f.Nname)
loc := e.oldLoc(n)
esc := loc.paramEsc
esc.Optimize()
if Debug.m != 0 && !loc.escapes {
if esc.Empty() {
Warnl(f.Pos, "%v does not escape", name())
}
if x := esc.Heap(); x >= 0 {
if x == 0 {
Warnl(f.Pos, "leaking param: %v", name())
} else {
// TODO(mdempsky): Mention level=x like below?
Warnl(f.Pos, "leaking param content: %v", name())
}
}
for i := 0; i < numEscResults; i++ {
if x := esc.Result(i); x >= 0 {
res := fn.Type.Results().Field(i).Sym
Warnl(f.Pos, "leaking param: %v to result %v level=%d", name(), res, x)
}
}
}
return esc.Encode()
}

1242
src/cmd/compile/internal/gc/escape.go
View file

File diff suppressed because it is too large Load diff

136
src/cmd/compile/internal/gc/export.go
View file

@ -5,34 +5,33 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/bio"
"cmd/internal/src"
"fmt"
)
var (
Debug_export int // if set, print debugging information about export data
"go/constant"
)
func exportf(bout *bio.Writer, format string, args ...interface{}) {
fmt.Fprintf(bout, format, args...)
if Debug_export != 0 {
if base.Debug.Export != 0 {
fmt.Printf(format, args...)
}
}
var asmlist []*Node
var asmlist []ir.Node
// exportsym marks n for export (or reexport).
func exportsym(n *Node) {
if n.Sym.OnExportList() {
func exportsym(n ir.Node) {
if n.Sym().OnExportList() {
return
}
n.Sym.SetOnExportList(true)
n.Sym().SetOnExportList(true)
if Debug.E != 0 {
fmt.Printf("export symbol %v\n", n.Sym)
if base.Flag.E != 0 {
fmt.Printf("export symbol %v\n", n.Sym())
}
exportlist = append(exportlist, n)
@ -42,22 +41,22 @@ func initname(s string) bool {
return s == "init"
}
func autoexport(n *Node, ctxt Class) {
if n.Sym.Pkg != localpkg {
func autoexport(n ir.Node, ctxt ir.Class) {
if n.Sym().Pkg != ir.LocalPkg {
return
}
if (ctxt != PEXTERN && ctxt != PFUNC) || dclcontext != PEXTERN {
if (ctxt != ir.PEXTERN && ctxt != ir.PFUNC) || dclcontext != ir.PEXTERN {
return
}
if n.Type != nil && n.Type.IsKind(TFUNC) && n.IsMethod() {
if n.Type() != nil && n.Type().IsKind(types.TFUNC) && ir.IsMethod(n) {
return
}
if types.IsExported(n.Sym.Name) || initname(n.Sym.Name) {
if types.IsExported(n.Sym().Name) || initname(n.Sym().Name) {
exportsym(n)
}
if asmhdr != "" && !n.Sym.Asm() {
n.Sym.SetAsm(true)
if base.Flag.AsmHdr != "" && !n.Sym().Asm() {
n.Sym().SetAsm(true)
asmlist = append(asmlist, n)
}
}
@ -70,28 +69,28 @@ func dumpexport(bout *bio.Writer) {
size := bout.Offset() - off
exportf(bout, "\n$$\n")
if Debug_export != 0 {
fmt.Printf("BenchmarkExportSize:%s 1 %d bytes\n", myimportpath, size)
if base.Debug.Export != 0 {
fmt.Printf("BenchmarkExportSize:%s 1 %d bytes\n", base.Ctxt.Pkgpath, size)
}
}
func importsym(ipkg *types.Pkg, s *types.Sym, op Op) *Node {
n := asNode(s.PkgDef())
func importsym(ipkg *types.Pkg, s *types.Sym, op ir.Op) ir.Node {
n := ir.AsNode(s.PkgDef())
if n == nil {
// iimport should have created a stub ONONAME
// declaration for all imported symbols. The exception
// is declarations for Runtimepkg, which are populated
// by loadsys instead.
if s.Pkg != Runtimepkg {
Fatalf("missing ONONAME for %v\n", s)
base.Fatalf("missing ONONAME for %v\n", s)
}
n = dclname(s)
s.SetPkgDef(asTypesNode(n))
s.SetPkgDef(n)
s.Importdef = ipkg
}
if n.Op != ONONAME && n.Op != op {
redeclare(lineno, s, fmt.Sprintf("during import %q", ipkg.Path))
if n.Op() != ir.ONONAME && n.Op() != op {
redeclare(base.Pos, s, fmt.Sprintf("during import %q", ipkg.Path))
}
return n
}
@ -100,57 +99,57 @@ func importsym(ipkg *types.Pkg, s *types.Sym, op Op) *Node {
// If no such type has been declared yet, a forward declaration is returned.
// ipkg is the package being imported
func importtype(ipkg *types.Pkg, pos src.XPos, s *types.Sym) *types.Type {
n := importsym(ipkg, s, OTYPE)
if n.Op != OTYPE {
t := types.New(TFORW)
n := importsym(ipkg, s, ir.OTYPE)
if n.Op() != ir.OTYPE {
t := types.New(types.TFORW)
t.Sym = s
t.Nod = asTypesNode(n)
t.Nod = n
n.Op = OTYPE
n.Pos = pos
n.Type = t
n.SetClass(PEXTERN)
n.SetOp(ir.OTYPE)
n.SetPos(pos)
n.SetType(t)
n.SetClass(ir.PEXTERN)
}
t := n.Type
t := n.Type()
if t == nil {
Fatalf("importtype %v", s)
base.Fatalf("importtype %v", s)
}
return t
}
// importobj declares symbol s as an imported object representable by op.
// ipkg is the package being imported
func importobj(ipkg *types.Pkg, pos src.XPos, s *types.Sym, op Op, ctxt Class, t *types.Type) *Node {
func importobj(ipkg *types.Pkg, pos src.XPos, s *types.Sym, op ir.Op, ctxt ir.Class, t *types.Type) ir.Node {
n := importsym(ipkg, s, op)
if n.Op != ONONAME {
if n.Op == op && (n.Class() != ctxt || !types.Identical(n.Type, t)) {
redeclare(lineno, s, fmt.Sprintf("during import %q", ipkg.Path))
if n.Op() != ir.ONONAME {
if n.Op() == op && (n.Class() != ctxt || !types.Identical(n.Type(), t)) {
redeclare(base.Pos, s, fmt.Sprintf("during import %q", ipkg.Path))
}
return nil
}
n.Op = op
n.Pos = pos
n.SetOp(op)
n.SetPos(pos)
n.SetClass(ctxt)
if ctxt == PFUNC {
n.Sym.SetFunc(true)
if ctxt == ir.PFUNC {
n.Sym().SetFunc(true)
}
n.Type = t
n.SetType(t)
return n
}
// importconst declares symbol s as an imported constant with type t and value val.
// ipkg is the package being imported
func importconst(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type, val Val) {
n := importobj(ipkg, pos, s, OLITERAL, PEXTERN, t)
func importconst(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type, val constant.Value) {
n := importobj(ipkg, pos, s, ir.OLITERAL, ir.PEXTERN, t)
if n == nil { // TODO: Check that value matches.
return
}
n.SetVal(val)
if Debug.E != 0 {
if base.Flag.E != 0 {
fmt.Printf("import const %v %L = %v\n", s, t, val)
}
}
@ -158,15 +157,14 @@ func importconst(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type, val
// importfunc declares symbol s as an imported function with type t.
// ipkg is the package being imported
func importfunc(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type) {
n := importobj(ipkg, pos, s, ONAME, PFUNC, t)
n := importobj(ipkg, pos, s, ir.ONAME, ir.PFUNC, t)
if n == nil {
return
}
n.Func = new(Func)
t.SetNname(asTypesNode(n))
n.SetFunc(new(ir.Func))
if Debug.E != 0 {
if base.Flag.E != 0 {
fmt.Printf("import func %v%S\n", s, t)
}
}
@ -174,12 +172,12 @@ func importfunc(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type) {
// importvar declares symbol s as an imported variable with type t.
// ipkg is the package being imported
func importvar(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type) {
n := importobj(ipkg, pos, s, ONAME, PEXTERN, t)
n := importobj(ipkg, pos, s, ir.ONAME, ir.PEXTERN, t)
if n == nil {
return
}
if Debug.E != 0 {
if base.Flag.E != 0 {
fmt.Printf("import var %v %L\n", s, t)
}
}
@ -187,43 +185,43 @@ func importvar(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type) {
// importalias declares symbol s as an imported type alias with type t.
// ipkg is the package being imported
func importalias(ipkg *types.Pkg, pos src.XPos, s *types.Sym, t *types.Type) {
n := importobj(ipkg, pos, s, OTYPE, PEXTERN, t)
n := importobj(ipkg, pos, s, ir.OTYPE, ir.PEXTERN, t)
if n == nil {
return
}
if Debug.E != 0 {
if base.Flag.E != 0 {
fmt.Printf("import type %v = %L\n", s, t)
}
}
func dumpasmhdr() {
b, err := bio.Create(asmhdr)
b, err := bio.Create(base.Flag.AsmHdr)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
fmt.Fprintf(b, "// generated by compile -asmhdr from package %s\n\n", localpkg.Name)
fmt.Fprintf(b, "// generated by compile -asmhdr from package %s\n\n", ir.LocalPkg.Name)
for _, n := range asmlist {
if n.Sym.IsBlank() {
if n.Sym().IsBlank() {
continue
}
switch n.Op {
case OLITERAL:
t := n.Val().Ctype()
if t == CTFLT || t == CTCPLX {
switch n.Op() {
case ir.OLITERAL:
t := n.Val().Kind()
if t == constant.Float || t == constant.Complex {
break
}
fmt.Fprintf(b, "#define const_%s %#v\n", n.Sym.Name, n.Val())
fmt.Fprintf(b, "#define const_%s %#v\n", n.Sym().Name, n.Val())
case OTYPE:
t := n.Type
case ir.OTYPE:
t := n.Type()
if !t.IsStruct() || t.StructType().Map != nil || t.IsFuncArgStruct() {
break
}
fmt.Fprintf(b, "#define %s__size %d\n", n.Sym.Name, int(t.Width))
fmt.Fprintf(b, "#define %s__size %d\n", n.Sym().Name, int(t.Width))
for _, f := range t.Fields().Slice() {
if !f.Sym.IsBlank() {
fmt.Fprintf(b, "#define %s_%s %d\n", n.Sym.Name, f.Sym.Name, int(f.Offset))
fmt.Fprintf(b, "#define %s_%s %d\n", n.Sym().Name, f.Sym.Name, int(f.Offset))
}
}
}

50
src/cmd/compile/internal/gc/gen.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/obj"
"cmd/internal/src"
@ -28,14 +30,14 @@ func sysvar(name string) *obj.LSym {
// isParamStackCopy reports whether this is the on-stack copy of a
// function parameter that moved to the heap.
func (n *Node) isParamStackCopy() bool {
return n.Op == ONAME && (n.Class() == PPARAM || n.Class() == PPARAMOUT) && n.Name.Param.Heapaddr != nil
func isParamStackCopy(n ir.Node) bool {
return n.Op() == ir.ONAME && (n.Class() == ir.PPARAM || n.Class() == ir.PPARAMOUT) && n.Name().Param.Heapaddr != nil
}
// isParamHeapCopy reports whether this is the on-heap copy of
// a function parameter that moved to the heap.
func (n *Node) isParamHeapCopy() bool {
return n.Op == ONAME && n.Class() == PAUTOHEAP && n.Name.Param.Stackcopy != nil
func isParamHeapCopy(n ir.Node) bool {
return n.Op() == ir.ONAME && n.Class() == ir.PAUTOHEAP && n.Name().Param.Stackcopy != nil
}
// autotmpname returns the name for an autotmp variable numbered n.
@ -50,37 +52,37 @@ func autotmpname(n int) string {
}
// make a new Node off the books
func tempAt(pos src.XPos, curfn *Node, t *types.Type) *Node {
func tempAt(pos src.XPos, curfn ir.Node, t *types.Type) ir.Node {
if curfn == nil {
Fatalf("no curfn for tempAt")
base.Fatalf("no curfn for tempAt")
}
if curfn.Func.Closure != nil && curfn.Op == OCLOSURE {
Dump("tempAt", curfn)
Fatalf("adding tempAt to wrong closure function")
if curfn.Op() == ir.OCLOSURE {
ir.Dump("tempAt", curfn)
base.Fatalf("adding tempAt to wrong closure function")
}
if t == nil {
Fatalf("tempAt called with nil type")
base.Fatalf("tempAt called with nil type")
}
s := &types.Sym{
Name: autotmpname(len(curfn.Func.Dcl)),
Pkg: localpkg,
Name: autotmpname(len(curfn.Func().Dcl)),
Pkg: ir.LocalPkg,
}
n := newnamel(pos, s)
s.Def = asTypesNode(n)
n.Type = t
n.SetClass(PAUTO)
n.Esc = EscNever
n.Name.Curfn = curfn
n.Name.SetUsed(true)
n.Name.SetAutoTemp(true)
curfn.Func.Dcl = append(curfn.Func.Dcl, n)
n := ir.NewNameAt(pos, s)
s.Def = n
n.SetType(t)
n.SetClass(ir.PAUTO)
n.SetEsc(EscNever)
n.Name().Curfn = curfn
n.Name().SetUsed(true)
n.Name().SetAutoTemp(true)
curfn.Func().Dcl = append(curfn.Func().Dcl, n)
dowidth(t)
return n.Orig
return n.Orig()
}
func temp(t *types.Type) *Node {
return tempAt(lineno, Curfn, t)
func temp(t *types.Type) ir.Node {
return tempAt(base.Pos, Curfn, t)
}

154
src/cmd/compile/internal/gc/go.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
"cmd/internal/obj"
@ -12,10 +14,6 @@ import (
"sync"
)
const (
BADWIDTH = types.BADWIDTH
)
var (
// maximum size variable which we will allocate on the stack.
// This limit is for explicit variable declarations like "var x T" or "x := ...".
@ -39,7 +37,7 @@ var (
// isRuntimePkg reports whether p is package runtime.
func isRuntimePkg(p *types.Pkg) bool {
if compiling_runtime && p == localpkg {
if base.Flag.CompilingRuntime && p == ir.LocalPkg {
return true
}
return p.Path == "runtime"
@ -47,31 +45,12 @@ func isRuntimePkg(p *types.Pkg) bool {
// isReflectPkg reports whether p is package reflect.
func isReflectPkg(p *types.Pkg) bool {
if p == localpkg {
return myimportpath == "reflect"
if p == ir.LocalPkg {
return base.Ctxt.Pkgpath == "reflect"
}
return p.Path == "reflect"
}
// The Class of a variable/function describes the "storage class"
// of a variable or function. During parsing, storage classes are
// called declaration contexts.
type Class uint8
//go:generate stringer -type=Class
const (
Pxxx Class = iota // no class; used during ssa conversion to indicate pseudo-variables
PEXTERN // global variables
PAUTO // local variables
PAUTOHEAP // local variables or parameters moved to heap
PPARAM // input arguments
PPARAMOUT // output results
PFUNC // global functions
// Careful: Class is stored in three bits in Node.flags.
_ = uint((1 << 3) - iota) // static assert for iota <= (1 << 3)
)
// Slices in the runtime are represented by three components:
//
// type slice struct {
@ -99,40 +78,10 @@ var (
var pragcgobuf [][]string
var outfile string
var linkobj string
// nerrors is the number of compiler errors reported
// since the last call to saveerrors.
var nerrors int
// nsavederrors is the total number of compiler errors
// reported before the last call to saveerrors.
var nsavederrors int
var nsyntaxerrors int
var decldepth int32
var nolocalimports bool
// gc debug flags
type DebugFlags struct {
P, B, C, E, G,
K, L, N, S,
W, e, h, j,
l, m, r, w int
}
var Debug DebugFlags
var debugstr string
var Debug_checknil int
var Debug_typeassert int
var localpkg *types.Pkg // package being compiled
var inimport bool // set during import
var itabpkg *types.Pkg // fake pkg for itab entries
@ -155,87 +104,53 @@ var gopkg *types.Pkg // pseudo-package for method symbols on anonymous receiver
var zerosize int64
var myimportpath string
var localimport string
var asmhdr string
var simtype [NTYPE]types.EType
var simtype [types.NTYPE]types.EType
var (
isInt [NTYPE]bool
isFloat [NTYPE]bool
isComplex [NTYPE]bool
issimple [NTYPE]bool
isInt [types.NTYPE]bool
isFloat [types.NTYPE]bool
isComplex [types.NTYPE]bool
issimple [types.NTYPE]bool
)
var (
okforeq [NTYPE]bool
okforadd [NTYPE]bool
okforand [NTYPE]bool
okfornone [NTYPE]bool
okforcmp [NTYPE]bool
okforbool [NTYPE]bool
okforcap [NTYPE]bool
okforlen [NTYPE]bool
okforarith [NTYPE]bool
okforconst [NTYPE]bool
okforeq [types.NTYPE]bool
okforadd [types.NTYPE]bool
okforand [types.NTYPE]bool
okfornone [types.NTYPE]bool
okforcmp [types.NTYPE]bool
okforbool [types.NTYPE]bool
okforcap [types.NTYPE]bool
okforlen [types.NTYPE]bool
okforarith [types.NTYPE]bool
)
var (
okfor [OEND][]bool
iscmp [OEND]bool
okfor [ir.OEND][]bool
iscmp [ir.OEND]bool
)
var minintval [NTYPE]*Mpint
var xtop []ir.Node
var maxintval [NTYPE]*Mpint
var exportlist []ir.Node
var minfltval [NTYPE]*Mpflt
var maxfltval [NTYPE]*Mpflt
var xtop []*Node
var exportlist []*Node
var importlist []*Node // imported functions and methods with inlinable bodies
var importlist []ir.Node // imported functions and methods with inlinable bodies
var (
funcsymsmu sync.Mutex // protects funcsyms and associated package lookups (see func funcsym)
funcsyms []*types.Sym
)
var dclcontext Class // PEXTERN/PAUTO
var dclcontext ir.Class // PEXTERN/PAUTO
var Curfn *Node
var Curfn ir.Node
var Widthptr int
var Widthreg int
var nblank *Node
var typecheckok bool
var compiling_runtime bool
// Compiling the standard library
var compiling_std bool
var use_writebarrier bool
var pure_go bool
var flag_installsuffix string
var flag_race bool
var flag_msan bool
var flagDWARF bool
// Whether we are adding any sort of code instrumentation, such as
// when the race detector is enabled.
var instrumenting bool
@ -243,20 +158,7 @@ var instrumenting bool
// Whether we are tracking lexical scopes for DWARF.
var trackScopes bool
// Controls generation of DWARF inlined instance records. Zero
// disables, 1 emits inlined routines but suppresses var info,
// and 2 emits inlined routines with tracking of formals/locals.
var genDwarfInline int
var debuglive int
var Ctxt *obj.Link
var writearchive bool
var nodfp *Node
var disable_checknil int
var nodfp ir.Node
var autogeneratedPos src.XPos
@ -293,7 +195,7 @@ var thearch Arch
var (
staticuint64s,
zerobase *Node
zerobase ir.Node
assertE2I,
assertE2I2,

90
src/cmd/compile/internal/gc/gsubr.go
View file

@ -31,6 +31,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/internal/obj"
"cmd/internal/objabi"
@ -45,7 +47,7 @@ type Progs struct {
next *obj.Prog // next Prog
pc int64 // virtual PC; count of Progs
pos src.XPos // position to use for new Progs
curfn *Node // fn these Progs are for
curfn ir.Node // fn these Progs are for
progcache []obj.Prog // local progcache
cacheidx int // first free element of progcache
@ -55,10 +57,10 @@ type Progs struct {
// newProgs returns a new Progs for fn.
// worker indicates which of the backend workers will use the Progs.
func newProgs(fn *Node, worker int) *Progs {
func newProgs(fn ir.Node, worker int) *Progs {
pp := new(Progs)
if Ctxt.CanReuseProgs() {
sz := len(sharedProgArray) / nBackendWorkers
if base.Ctxt.CanReuseProgs() {
sz := len(sharedProgArray) / base.Flag.LowerC
pp.progcache = sharedProgArray[sz*worker : sz*(worker+1)]
}
pp.curfn = fn
@ -67,7 +69,7 @@ func newProgs(fn *Node, worker int) *Progs {
pp.next = pp.NewProg()
pp.clearp(pp.next)
pp.pos = fn.Pos
pp.pos = fn.Pos()
pp.settext(fn)
// PCDATA tables implicitly start with index -1.
pp.prevLive = LivenessIndex{-1, false}
@ -83,19 +85,19 @@ func (pp *Progs) NewProg() *obj.Prog {
} else {
p = new(obj.Prog)
}
p.Ctxt = Ctxt
p.Ctxt = base.Ctxt
return p
}
// Flush converts from pp to machine code.
func (pp *Progs) Flush() {
plist := &obj.Plist{Firstpc: pp.Text, Curfn: pp.curfn}
obj.Flushplist(Ctxt, plist, pp.NewProg, myimportpath)
obj.Flushplist(base.Ctxt, plist, pp.NewProg, base.Ctxt.Pkgpath)
}
// Free clears pp and any associated resources.
func (pp *Progs) Free() {
if Ctxt.CanReuseProgs() {
if base.Ctxt.CanReuseProgs() {
// Clear progs to enable GC and avoid abuse.
s := pp.progcache[:pp.cacheidx]
for i := range s {
@ -133,8 +135,8 @@ func (pp *Progs) Prog(as obj.As) *obj.Prog {
pp.clearp(pp.next)
p.Link = pp.next
if !pp.pos.IsKnown() && Debug.K != 0 {
Warn("prog: unknown position (line 0)")
if !pp.pos.IsKnown() && base.Flag.K != 0 {
base.Warn("prog: unknown position (line 0)")
}
p.As = as
@ -172,17 +174,17 @@ func (pp *Progs) Appendpp(p *obj.Prog, as obj.As, ftype obj.AddrType, freg int16
return q
}
func (pp *Progs) settext(fn *Node) {
func (pp *Progs) settext(fn ir.Node) {
if pp.Text != nil {
Fatalf("Progs.settext called twice")
base.Fatalf("Progs.settext called twice")
}
ptxt := pp.Prog(obj.ATEXT)
pp.Text = ptxt
fn.Func.lsym.Func().Text = ptxt
fn.Func().LSym.Func().Text = ptxt
ptxt.From.Type = obj.TYPE_MEM
ptxt.From.Name = obj.NAME_EXTERN
ptxt.From.Sym = fn.Func.lsym
ptxt.From.Sym = fn.Func().LSym
}
// initLSym defines f's obj.LSym and initializes it based on the
@ -191,36 +193,36 @@ func (pp *Progs) settext(fn *Node) {
//
// initLSym must be called exactly once per function and must be
// called for both functions with bodies and functions without bodies.
func (f *Func) initLSym(hasBody bool) {
if f.lsym != nil {
Fatalf("Func.initLSym called twice")
func initLSym(f *ir.Func, hasBody bool) {
if f.LSym != nil {
base.Fatalf("Func.initLSym called twice")
}
if nam := f.Nname; !nam.isBlank() {
f.lsym = nam.Sym.Linksym()
if f.Pragma&Systemstack != 0 {
f.lsym.Set(obj.AttrCFunc, true)
if nam := f.Nname; !ir.IsBlank(nam) {
f.LSym = nam.Sym().Linksym()
if f.Pragma&ir.Systemstack != 0 {
f.LSym.Set(obj.AttrCFunc, true)
}
var aliasABI obj.ABI
needABIAlias := false
defABI, hasDefABI := symabiDefs[f.lsym.Name]
defABI, hasDefABI := symabiDefs[f.LSym.Name]
if hasDefABI && defABI == obj.ABI0 {
// Symbol is defined as ABI0. Create an
// Internal -> ABI0 wrapper.
f.lsym.SetABI(obj.ABI0)
f.LSym.SetABI(obj.ABI0)
needABIAlias, aliasABI = true, obj.ABIInternal
} else {
// No ABI override. Check that the symbol is
// using the expected ABI.
want := obj.ABIInternal
if f.lsym.ABI() != want {
Fatalf("function symbol %s has the wrong ABI %v, expected %v", f.lsym.Name, f.lsym.ABI(), want)
if f.LSym.ABI() != want {
base.Fatalf("function symbol %s has the wrong ABI %v, expected %v", f.LSym.Name, f.LSym.ABI(), want)
}
}
isLinknameExported := nam.Sym.Linkname != "" && (hasBody || hasDefABI)
if abi, ok := symabiRefs[f.lsym.Name]; (ok && abi == obj.ABI0) || isLinknameExported {
isLinknameExported := nam.Sym().Linkname != "" && (hasBody || hasDefABI)
if abi, ok := symabiRefs[f.LSym.Name]; (ok && abi == obj.ABI0) || isLinknameExported {
// Either 1) this symbol is definitely
// referenced as ABI0 from this package; or 2)
// this symbol is defined in this package but
@ -232,7 +234,7 @@ func (f *Func) initLSym(hasBody bool) {
// since other packages may "pull" symbols
// using linkname and we don't want to create
// duplicate ABI wrappers.
if f.lsym.ABI() != obj.ABI0 {
if f.LSym.ABI() != obj.ABI0 {
needABIAlias, aliasABI = true, obj.ABI0
}
}
@ -243,13 +245,13 @@ func (f *Func) initLSym(hasBody bool) {
// rather than looking them up. The uniqueness
// of f.lsym ensures uniqueness of asym.
asym := &obj.LSym{
Name: f.lsym.Name,
Name: f.LSym.Name,
Type: objabi.SABIALIAS,
R: []obj.Reloc{{Sym: f.lsym}}, // 0 size, so "informational"
R: []obj.Reloc{{Sym: f.LSym}}, // 0 size, so "informational"
}
asym.SetABI(aliasABI)
asym.Set(obj.AttrDuplicateOK, true)
Ctxt.ABIAliases = append(Ctxt.ABIAliases, asym)
base.Ctxt.ABIAliases = append(base.Ctxt.ABIAliases, asym)
}
}
@ -268,7 +270,7 @@ func (f *Func) initLSym(hasBody bool) {
if f.Needctxt() {
flag |= obj.NEEDCTXT
}
if f.Pragma&Nosplit != 0 {
if f.Pragma&ir.Nosplit != 0 {
flag |= obj.NOSPLIT
}
if f.ReflectMethod() {
@ -278,31 +280,31 @@ func (f *Func) initLSym(hasBody bool) {
// Clumsy but important.
// See test/recover.go for test cases and src/reflect/value.go
// for the actual functions being considered.
if myimportpath == "reflect" {
switch f.Nname.Sym.Name {
if base.Ctxt.Pkgpath == "reflect" {
switch f.Nname.Sym().Name {
case "callReflect", "callMethod":
flag |= obj.WRAPPER
}
}
Ctxt.InitTextSym(f.lsym, flag)
base.Ctxt.InitTextSym(f.LSym, flag)
}
func ggloblnod(nam *Node) {
s := nam.Sym.Linksym()
func ggloblnod(nam ir.Node) {
s := nam.Sym().Linksym()
s.Gotype = ngotype(nam).Linksym()
flags := 0
if nam.Name.Readonly() {
if nam.Name().Readonly() {
flags = obj.RODATA
}
if nam.Type != nil && !nam.Type.HasPointers() {
if nam.Type() != nil && !nam.Type().HasPointers() {
flags |= obj.NOPTR
}
Ctxt.Globl(s, nam.Type.Width, flags)
if nam.Name.LibfuzzerExtraCounter() {
base.Ctxt.Globl(s, nam.Type().Width, flags)
if nam.Name().LibfuzzerExtraCounter() {
s.Type = objabi.SLIBFUZZER_EXTRA_COUNTER
}
if nam.Sym.Linkname != "" {
if nam.Sym().Linkname != "" {
// Make sure linkname'd symbol is non-package. When a symbol is
// both imported and linkname'd, s.Pkg may not set to "_" in
// types.Sym.Linksym because LSym already exists. Set it here.
@ -315,7 +317,7 @@ func ggloblsym(s *obj.LSym, width int32, flags int16) {
s.Set(obj.AttrLocal, true)
flags &^= obj.LOCAL
}
Ctxt.Globl(s, int64(width), int(flags))
base.Ctxt.Globl(s, int64(width), int(flags))
}
func Addrconst(a *obj.Addr, v int64) {
@ -326,7 +328,7 @@ func Addrconst(a *obj.Addr, v int64) {
func Patch(p *obj.Prog, to *obj.Prog) {
if p.To.Type != obj.TYPE_BRANCH {
Fatalf("patch: not a branch")
base.Fatalf("patch: not a branch")
}
p.To.SetTarget(to)
p.To.Offset = to.Pc

729
src/cmd/compile/internal/gc/iexport.go
View file

File diff suppressed because it is too large Load diff

545
src/cmd/compile/internal/gc/iimport.go
View file

File diff suppressed because it is too large Load diff

45
src/cmd/compile/internal/gc/init.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/obj"
)
@ -15,8 +17,9 @@ import (
// the name, normally "pkg.init", is altered to "pkg.init.0".
var renameinitgen int
// Dummy function for autotmps generated during typechecking.
var dummyInitFn = nod(ODCLFUNC, nil, nil)
// Function collecting autotmps generated during typechecking,
// to be included in the package-level init function.
var initTodo = ir.Nod(ir.ODCLFUNC, nil, nil)
func renameinit() *types.Sym {
s := lookupN("init.", renameinitgen)
@ -30,7 +33,7 @@ func renameinit() *types.Sym {
// 1) Initialize all of the packages the current package depends on.
// 2) Initialize all the variables that have initializers.
// 3) Run any init functions.
func fninit(n []*Node) {
func fninit(n []ir.Node) {
nf := initOrder(n)
var deps []*obj.LSym // initTask records for packages the current package depends on
@ -43,16 +46,16 @@ func fninit(n []*Node) {
// Make a function that contains all the initialization statements.
if len(nf) > 0 {
lineno = nf[0].Pos // prolog/epilog gets line number of first init stmt
base.Pos = nf[0].Pos() // prolog/epilog gets line number of first init stmt
initializers := lookup("init")
fn := dclfunc(initializers, nod(OTFUNC, nil, nil))
for _, dcl := range dummyInitFn.Func.Dcl {
dcl.Name.Curfn = fn
fn := dclfunc(initializers, ir.Nod(ir.OTFUNC, nil, nil))
for _, dcl := range initTodo.Func().Dcl {
dcl.Name().Curfn = fn
}
fn.Func.Dcl = append(fn.Func.Dcl, dummyInitFn.Func.Dcl...)
dummyInitFn.Func.Dcl = nil
fn.Func().Dcl = append(fn.Func().Dcl, initTodo.Func().Dcl...)
initTodo.Func().Dcl = nil
fn.Nbody.Set(nf)
fn.PtrBody().Set(nf)
funcbody()
fn = typecheck(fn, ctxStmt)
@ -62,35 +65,35 @@ func fninit(n []*Node) {
xtop = append(xtop, fn)
fns = append(fns, initializers.Linksym())
}
if dummyInitFn.Func.Dcl != nil {
// We only generate temps using dummyInitFn if there
if initTodo.Func().Dcl != nil {
// We only generate temps using initTodo if there
// are package-scope initialization statements, so
// something's weird if we get here.
Fatalf("dummyInitFn still has declarations")
base.Fatalf("initTodo still has declarations")
}
dummyInitFn = nil
initTodo = nil
// Record user init functions.
for i := 0; i < renameinitgen; i++ {
s := lookupN("init.", i)
fn := asNode(s.Def).Name.Defn
fn := ir.AsNode(s.Def).Name().Defn
// Skip init functions with empty bodies.
if fn.Nbody.Len() == 1 && fn.Nbody.First().Op == OEMPTY {
if fn.Body().Len() == 1 && fn.Body().First().Op() == ir.OEMPTY {
continue
}
fns = append(fns, s.Linksym())
}
if len(deps) == 0 && len(fns) == 0 && localpkg.Name != "main" && localpkg.Name != "runtime" {
if len(deps) == 0 && len(fns) == 0 && ir.LocalPkg.Name != "main" && ir.LocalPkg.Name != "runtime" {
return // nothing to initialize
}
// Make an .inittask structure.
sym := lookup(".inittask")
nn := newname(sym)
nn.Type = types.Types[TUINT8] // dummy type
nn.SetClass(PEXTERN)
sym.Def = asTypesNode(nn)
nn := NewName(sym)
nn.SetType(types.Types[types.TUINT8]) // fake type
nn.SetClass(ir.PEXTERN)
sym.Def = nn
exportsym(nn)
lsym := sym.Linksym()
ot := 0

161
src/cmd/compile/internal/gc/initorder.go
View file

@ -8,6 +8,10 @@ import (
"bytes"
"container/heap"
"fmt"
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
)
// Package initialization
@ -60,7 +64,7 @@ const (
type InitOrder struct {
// blocking maps initialization assignments to the assignments
// that depend on it.
blocking map[*Node][]*Node
blocking map[ir.Node][]ir.Node
// ready is the queue of Pending initialization assignments
// that are ready for initialization.
@ -71,45 +75,43 @@ type InitOrder struct {
// package-level declarations (in declaration order) and outputs the
// corresponding list of statements to include in the init() function
// body.
func initOrder(l []*Node) []*Node {
func initOrder(l []ir.Node) []ir.Node {
s := InitSchedule{
initplans: make(map[*Node]*InitPlan),
inittemps: make(map[*Node]*Node),
initplans: make(map[ir.Node]*InitPlan),
inittemps: make(map[ir.Node]ir.Node),
}
o := InitOrder{
blocking: make(map[*Node][]*Node),
blocking: make(map[ir.Node][]ir.Node),
}
// Process all package-level assignment in declaration order.
for _, n := range l {
switch n.Op {
case OAS, OAS2DOTTYPE, OAS2FUNC, OAS2MAPR, OAS2RECV:
switch n.Op() {
case ir.OAS, ir.OAS2DOTTYPE, ir.OAS2FUNC, ir.OAS2MAPR, ir.OAS2RECV:
o.processAssign(n)
o.flushReady(s.staticInit)
case ODCLCONST, ODCLFUNC, ODCLTYPE:
case ir.ODCLCONST, ir.ODCLFUNC, ir.ODCLTYPE:
// nop
default:
Fatalf("unexpected package-level statement: %v", n)
base.Fatalf("unexpected package-level statement: %v", n)
}
}
// Check that all assignments are now Done; if not, there must
// have been a dependency cycle.
for _, n := range l {
switch n.Op {
case OAS, OAS2DOTTYPE, OAS2FUNC, OAS2MAPR, OAS2RECV:
switch n.Op() {
case ir.OAS, ir.OAS2DOTTYPE, ir.OAS2FUNC, ir.OAS2MAPR, ir.OAS2RECV:
if n.Initorder() != InitDone {
// If there have already been errors
// printed, those errors may have
// confused us and there might not be
// a loop. Let the user fix those
// first.
if nerrors > 0 {
errorexit()
}
base.ExitIfErrors()
findInitLoopAndExit(firstLHS(n), new([]*Node))
Fatalf("initialization unfinished, but failed to identify loop")
findInitLoopAndExit(firstLHS(n), new([]ir.Node))
base.Fatalf("initialization unfinished, but failed to identify loop")
}
}
}
@ -117,34 +119,34 @@ func initOrder(l []*Node) []*Node {
// Invariant consistency check. If this is non-zero, then we
// should have found a cycle above.
if len(o.blocking) != 0 {
Fatalf("expected empty map: %v", o.blocking)
base.Fatalf("expected empty map: %v", o.blocking)
}
return s.out
}
func (o *InitOrder) processAssign(n *Node) {
if n.Initorder() != InitNotStarted || n.Xoffset != BADWIDTH {
Fatalf("unexpected state: %v, %v, %v", n, n.Initorder(), n.Xoffset)
func (o *InitOrder) processAssign(n ir.Node) {
if n.Initorder() != InitNotStarted || n.Offset() != types.BADWIDTH {
base.Fatalf("unexpected state: %v, %v, %v", n, n.Initorder(), n.Offset())
}
n.SetInitorder(InitPending)
n.Xoffset = 0
n.SetOffset(0)
// Compute number of variable dependencies and build the
// inverse dependency ("blocking") graph.
for dep := range collectDeps(n, true) {
defn := dep.Name.Defn
defn := dep.Name().Defn
// Skip dependencies on functions (PFUNC) and
// variables already initialized (InitDone).
if dep.Class() != PEXTERN || defn.Initorder() == InitDone {
if dep.Class() != ir.PEXTERN || defn.Initorder() == InitDone {
continue
}
n.Xoffset++
n.SetOffset(n.Offset() + 1)
o.blocking[defn] = append(o.blocking[defn], n)
}
if n.Xoffset == 0 {
if n.Offset() == 0 {
heap.Push(&o.ready, n)
}
}
@ -152,23 +154,23 @@ func (o *InitOrder) processAssign(n *Node) {
// flushReady repeatedly applies initialize to the earliest (in
// declaration order) assignment ready for initialization and updates
// the inverse dependency ("blocking") graph.
func (o *InitOrder) flushReady(initialize func(*Node)) {
func (o *InitOrder) flushReady(initialize func(ir.Node)) {
for o.ready.Len() != 0 {
n := heap.Pop(&o.ready).(*Node)
if n.Initorder() != InitPending || n.Xoffset != 0 {
Fatalf("unexpected state: %v, %v, %v", n, n.Initorder(), n.Xoffset)
n := heap.Pop(&o.ready).(ir.Node)
if n.Initorder() != InitPending || n.Offset() != 0 {
base.Fatalf("unexpected state: %v, %v, %v", n, n.Initorder(), n.Offset())
}
initialize(n)
n.SetInitorder(InitDone)
n.Xoffset = BADWIDTH
n.SetOffset(types.BADWIDTH)
blocked := o.blocking[n]
delete(o.blocking, n)
for _, m := range blocked {
m.Xoffset--
if m.Xoffset == 0 {
m.SetOffset(m.Offset() - 1)
if m.Offset() == 0 {
heap.Push(&o.ready, m)
}
}
@ -181,7 +183,7 @@ func (o *InitOrder) flushReady(initialize func(*Node)) {
// path points to a slice used for tracking the sequence of
// variables/functions visited. Using a pointer to a slice allows the
// slice capacity to grow and limit reallocations.
func findInitLoopAndExit(n *Node, path *[]*Node) {
func findInitLoopAndExit(n ir.Node, path *[]ir.Node) {
// We implement a simple DFS loop-finding algorithm. This
// could be faster, but initialization cycles are rare.
@ -194,14 +196,14 @@ func findInitLoopAndExit(n *Node, path *[]*Node) {
// There might be multiple loops involving n; by sorting
// references, we deterministically pick the one reported.
refers := collectDeps(n.Name.Defn, false).Sorted(func(ni, nj *Node) bool {
return ni.Pos.Before(nj.Pos)
refers := collectDeps(n.Name().Defn, false).Sorted(func(ni, nj ir.Node) bool {
return ni.Pos().Before(nj.Pos())
})
*path = append(*path, n)
for _, ref := range refers {
// Short-circuit variables that were initialized.
if ref.Class() == PEXTERN && ref.Name.Defn.Initorder() == InitDone {
if ref.Class() == ir.PEXTERN && ref.Name().Defn.Initorder() == InitDone {
continue
}
@ -213,12 +215,12 @@ func findInitLoopAndExit(n *Node, path *[]*Node) {
// reportInitLoopAndExit reports and initialization loop as an error
// and exits. However, if l is not actually an initialization loop, it
// simply returns instead.
func reportInitLoopAndExit(l []*Node) {
func reportInitLoopAndExit(l []ir.Node) {
// Rotate loop so that the earliest variable declaration is at
// the start.
i := -1
for j, n := range l {
if n.Class() == PEXTERN && (i == -1 || n.Pos.Before(l[i].Pos)) {
if n.Class() == ir.PEXTERN && (i == -1 || n.Pos().Before(l[i].Pos())) {
i = j
}
}
@ -236,61 +238,60 @@ func reportInitLoopAndExit(l []*Node) {
var msg bytes.Buffer
fmt.Fprintf(&msg, "initialization loop:\n")
for _, n := range l {
fmt.Fprintf(&msg, "\t%v: %v refers to\n", n.Line(), n)
fmt.Fprintf(&msg, "\t%v: %v refers to\n", ir.Line(n), n)
}
fmt.Fprintf(&msg, "\t%v: %v", l[0].Line(), l[0])
fmt.Fprintf(&msg, "\t%v: %v", ir.Line(l[0]), l[0])
yyerrorl(l[0].Pos, msg.String())
errorexit()
base.ErrorfAt(l[0].Pos(), msg.String())
base.ErrorExit()
}
// collectDeps returns all of the package-level functions and
// variables that declaration n depends on. If transitive is true,
// then it also includes the transitive dependencies of any depended
// upon functions (but not variables).
func collectDeps(n *Node, transitive bool) NodeSet {
func collectDeps(n ir.Node, transitive bool) ir.NodeSet {
d := initDeps{transitive: transitive}
switch n.Op {
case OAS:
d.inspect(n.Right)
case OAS2DOTTYPE, OAS2FUNC, OAS2MAPR, OAS2RECV:
d.inspect(n.Right)
case ODCLFUNC:
d.inspectList(n.Nbody)
switch n.Op() {
case ir.OAS:
d.inspect(n.Right())
case ir.OAS2DOTTYPE, ir.OAS2FUNC, ir.OAS2MAPR, ir.OAS2RECV:
d.inspect(n.Right())
case ir.ODCLFUNC:
d.inspectList(n.Body())
default:
Fatalf("unexpected Op: %v", n.Op)
base.Fatalf("unexpected Op: %v", n.Op())
}
return d.seen
}
type initDeps struct {
transitive bool
seen NodeSet
seen ir.NodeSet
}
func (d *initDeps) inspect(n *Node) { inspect(n, d.visit) }
func (d *initDeps) inspectList(l Nodes) { inspectList(l, d.visit) }
func (d *initDeps) inspect(n ir.Node) { ir.Inspect(n, d.visit) }
func (d *initDeps) inspectList(l ir.Nodes) { ir.InspectList(l, d.visit) }
// visit calls foundDep on any package-level functions or variables
// referenced by n, if any.
func (d *initDeps) visit(n *Node) bool {
switch n.Op {
case ONAME:
if n.isMethodExpression() {
d.foundDep(asNode(n.Type.FuncType().Nname))
func (d *initDeps) visit(n ir.Node) bool {
switch n.Op() {
case ir.OMETHEXPR:
d.foundDep(methodExprName(n))
return false
}
case ir.ONAME:
switch n.Class() {
case PEXTERN, PFUNC:
case ir.PEXTERN, ir.PFUNC:
d.foundDep(n)
}
case OCLOSURE:
d.inspectList(n.Func.Closure.Nbody)
case ir.OCLOSURE:
d.inspectList(n.Func().Decl.Body())
case ODOTMETH, OCALLPART:
d.foundDep(asNode(n.Type.FuncType().Nname))
case ir.ODOTMETH, ir.OCALLPART:
d.foundDep(methodExprName(n))
}
return true
@ -298,7 +299,7 @@ func (d *initDeps) visit(n *Node) bool {
// foundDep records that we've found a dependency on n by adding it to
// seen.
func (d *initDeps) foundDep(n *Node) {
func (d *initDeps) foundDep(n ir.Node) {
// Can happen with method expressions involving interface
// types; e.g., fixedbugs/issue4495.go.
if n == nil {
@ -307,7 +308,7 @@ func (d *initDeps) foundDep(n *Node) {
// Names without definitions aren't interesting as far as
// initialization ordering goes.
if n.Name.Defn == nil {
if n.Name().Defn == nil {
return
}
@ -315,8 +316,8 @@ func (d *initDeps) foundDep(n *Node) {
return
}
d.seen.Add(n)
if d.transitive && n.Class() == PFUNC {
d.inspectList(n.Name.Defn.Nbody)
if d.transitive && n.Class() == ir.PFUNC {
d.inspectList(n.Name().Defn.Body())
}
}
@ -327,13 +328,15 @@ func (d *initDeps) foundDep(n *Node) {
// an OAS node's Pos may not be unique. For example, given the
// declaration "var a, b = f(), g()", "a" must be ordered before "b",
// but both OAS nodes use the "=" token's position as their Pos.
type declOrder []*Node
type declOrder []ir.Node
func (s declOrder) Len() int { return len(s) }
func (s declOrder) Less(i, j int) bool { return firstLHS(s[i]).Pos.Before(firstLHS(s[j]).Pos) }
func (s declOrder) Less(i, j int) bool {
return firstLHS(s[i]).Pos().Before(firstLHS(s[j]).Pos())
}
func (s declOrder) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s *declOrder) Push(x interface{}) { *s = append(*s, x.(*Node)) }
func (s *declOrder) Push(x interface{}) { *s = append(*s, x.(ir.Node)) }
func (s *declOrder) Pop() interface{} {
n := (*s)[len(*s)-1]
*s = (*s)[:len(*s)-1]
@ -342,14 +345,14 @@ func (s *declOrder) Pop() interface{} {
// firstLHS returns the first expression on the left-hand side of
// assignment n.
func firstLHS(n *Node) *Node {
switch n.Op {
case OAS:
return n.Left
case OAS2DOTTYPE, OAS2FUNC, OAS2RECV, OAS2MAPR:
return n.List.First()
func firstLHS(n ir.Node) ir.Node {
switch n.Op() {
case ir.OAS:
return n.Left()
case ir.OAS2DOTTYPE, ir.OAS2FUNC, ir.OAS2RECV, ir.OAS2MAPR:
return n.List().First()
}
Fatalf("unexpected Op: %v", n.Op)
base.Fatalf("unexpected Op: %v", n.Op())
return nil
}

933
src/cmd/compile/internal/gc/inl.go
View file

File diff suppressed because it is too large Load diff

93
src/cmd/compile/internal/gc/lex.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/syntax"
"cmd/internal/objabi"
"cmd/internal/src"
@ -12,12 +14,8 @@ import (
"strings"
)
// lineno is the source position at the start of the most recently lexed token.
// TODO(gri) rename and eventually remove
var lineno src.XPos
func makePos(base *src.PosBase, line, col uint) src.XPos {
return Ctxt.PosTable.XPos(src.MakePos(base, line, col))
func makePos(b *src.PosBase, line, col uint) src.XPos {
return base.Ctxt.PosTable.XPos(src.MakePos(b, line, col))
}
func isSpace(c rune) bool {
@ -28,78 +26,51 @@ func isQuoted(s string) bool {
return len(s) >= 2 && s[0] == '"' && s[len(s)-1] == '"'
}
type PragmaFlag int16
const (
// Func pragmas.
Nointerface PragmaFlag = 1 << iota
Noescape // func parameters don't escape
Norace // func must not have race detector annotations
Nosplit // func should not execute on separate stack
Noinline // func should not be inlined
NoCheckPtr // func should not be instrumented by checkptr
CgoUnsafeArgs // treat a pointer to one arg as a pointer to them all
UintptrEscapes // pointers converted to uintptr escape
FuncPragmas = ir.Nointerface |
ir.Noescape |
ir.Norace |
ir.Nosplit |
ir.Noinline |
ir.NoCheckPtr |
ir.CgoUnsafeArgs |
ir.UintptrEscapes |
ir.Systemstack |
ir.Nowritebarrier |
ir.Nowritebarrierrec |
ir.Yeswritebarrierrec
// Runtime-only func pragmas.
// See ../../../../runtime/README.md for detailed descriptions.
Systemstack // func must run on system stack
Nowritebarrier // emit compiler error instead of write barrier
Nowritebarrierrec // error on write barrier in this or recursive callees
Yeswritebarrierrec // cancels Nowritebarrierrec in this function and callees
// Runtime and cgo type pragmas
NotInHeap // values of this type must not be heap allocated
// Go command pragmas
GoBuildPragma
TypePragmas = ir.NotInHeap
)
const (
FuncPragmas = Nointerface |
Noescape |
Norace |
Nosplit |
Noinline |
NoCheckPtr |
CgoUnsafeArgs |
UintptrEscapes |
Systemstack |
Nowritebarrier |
Nowritebarrierrec |
Yeswritebarrierrec
TypePragmas = NotInHeap
)
func pragmaFlag(verb string) PragmaFlag {
func pragmaFlag(verb string) ir.PragmaFlag {
switch verb {
case "go:build":
return GoBuildPragma
return ir.GoBuildPragma
case "go:nointerface":
if objabi.Fieldtrack_enabled != 0 {
return Nointerface
return ir.Nointerface
}
case "go:noescape":
return Noescape
return ir.Noescape
case "go:norace":
return Norace
return ir.Norace
case "go:nosplit":
return Nosplit | NoCheckPtr // implies NoCheckPtr (see #34972)
return ir.Nosplit | ir.NoCheckPtr // implies NoCheckPtr (see #34972)
case "go:noinline":
return Noinline
return ir.Noinline
case "go:nocheckptr":
return NoCheckPtr
return ir.NoCheckPtr
case "go:systemstack":
return Systemstack
return ir.Systemstack
case "go:nowritebarrier":
return Nowritebarrier
return ir.Nowritebarrier
case "go:nowritebarrierrec":
return Nowritebarrierrec | Nowritebarrier // implies Nowritebarrier
return ir.Nowritebarrierrec | ir.Nowritebarrier // implies Nowritebarrier
case "go:yeswritebarrierrec":
return Yeswritebarrierrec
return ir.Yeswritebarrierrec
case "go:cgo_unsafe_args":
return CgoUnsafeArgs | NoCheckPtr // implies NoCheckPtr (see #34968)
return ir.CgoUnsafeArgs | ir.NoCheckPtr // implies NoCheckPtr (see #34968)
case "go:uintptrescapes":
// For the next function declared in the file
// any uintptr arguments may be pointer values
@ -112,9 +83,9 @@ func pragmaFlag(verb string) PragmaFlag {
// call. The conversion to uintptr must appear
// in the argument list.
// Used in syscall/dll_windows.go.
return UintptrEscapes
return ir.UintptrEscapes
case "go:notinheap":
return NotInHeap
return ir.NotInHeap
}
return 0
}

864
src/cmd/compile/internal/gc/main.go
View file

File diff suppressed because it is too large Load diff

13
src/cmd/compile/internal/gc/mkbuiltin.go
View file

@ -35,7 +35,10 @@ func main() {
fmt.Fprintln(&b)
fmt.Fprintln(&b, "package gc")
fmt.Fprintln(&b)
fmt.Fprintln(&b, `import "cmd/compile/internal/types"`)
fmt.Fprintln(&b, `import (`)
fmt.Fprintln(&b, ` "cmd/compile/internal/ir"`)
fmt.Fprintln(&b, ` "cmd/compile/internal/types"`)
fmt.Fprintln(&b, `)`)
mkbuiltin(&b, "runtime")
@ -144,12 +147,12 @@ func (i *typeInterner) mktype(t ast.Expr) string {
case "rune":
return "types.Runetype"
}
return fmt.Sprintf("types.Types[T%s]", strings.ToUpper(t.Name))
return fmt.Sprintf("types.Types[types.T%s]", strings.ToUpper(t.Name))
case *ast.SelectorExpr:
if t.X.(*ast.Ident).Name != "unsafe" || t.Sel.Name != "Pointer" {
log.Fatalf("unhandled type: %#v", t)
}
return "types.Types[TUNSAFEPTR]"
return "types.Types[types.TUNSAFEPTR]"
case *ast.ArrayType:
if t.Len == nil {
@ -171,7 +174,7 @@ func (i *typeInterner) mktype(t ast.Expr) string {
if len(t.Methods.List) != 0 {
log.Fatal("non-empty interfaces unsupported")
}
return "types.Types[TINTER]"
return "types.Types[types.TINTER]"
case *ast.MapType:
return fmt.Sprintf("types.NewMap(%s, %s)", i.subtype(t.Key), i.subtype(t.Value))
case *ast.StarExpr:
@ -204,7 +207,7 @@ func (i *typeInterner) fields(fl *ast.FieldList, keepNames bool) string {
}
}
}
return fmt.Sprintf("[]*Node{%s}", strings.Join(res, ", "))
return fmt.Sprintf("[]ir.Node{%s}", strings.Join(res, ", "))
}
func intconst(e ast.Expr) int64 {

357
src/cmd/compile/internal/gc/mpfloat.go
View file

@ -1,357 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
import (
"fmt"
"math"
"math/big"
)
// implements float arithmetic
const (
// Maximum size in bits for Mpints before signalling
// overflow and also mantissa precision for Mpflts.
Mpprec = 512
// Turn on for constant arithmetic debugging output.
Mpdebug = false
)
// Mpflt represents a floating-point constant.
type Mpflt struct {
Val big.Float
}
// Mpcplx represents a complex constant.
type Mpcplx struct {
Real Mpflt
Imag Mpflt
}
// Use newMpflt (not new(Mpflt)!) to get the correct default precision.
func newMpflt() *Mpflt {
var a Mpflt
a.Val.SetPrec(Mpprec)
return &a
}
// Use newMpcmplx (not new(Mpcplx)!) to get the correct default precision.
func newMpcmplx() *Mpcplx {
var a Mpcplx
a.Real = *newMpflt()
a.Imag = *newMpflt()
return &a
}
func (a *Mpflt) SetInt(b *Mpint) {
if b.checkOverflow(0) {
// sign doesn't really matter but copy anyway
a.Val.SetInf(b.Val.Sign() < 0)
return
}
a.Val.SetInt(&b.Val)
}
func (a *Mpflt) Set(b *Mpflt) {
a.Val.Set(&b.Val)
}
func (a *Mpflt) Add(b *Mpflt) {
if Mpdebug {
fmt.Printf("\n%v + %v", a, b)
}
a.Val.Add(&a.Val, &b.Val)
if Mpdebug {
fmt.Printf(" = %v\n\n", a)
}
}
func (a *Mpflt) AddFloat64(c float64) {
var b Mpflt
b.SetFloat64(c)
a.Add(&b)
}
func (a *Mpflt) Sub(b *Mpflt) {
if Mpdebug {
fmt.Printf("\n%v - %v", a, b)
}
a.Val.Sub(&a.Val, &b.Val)
if Mpdebug {
fmt.Printf(" = %v\n\n", a)
}
}
func (a *Mpflt) Mul(b *Mpflt) {
if Mpdebug {
fmt.Printf("%v\n * %v\n", a, b)
}
a.Val.Mul(&a.Val, &b.Val)
if Mpdebug {
fmt.Printf(" = %v\n\n", a)
}
}
func (a *Mpflt) MulFloat64(c float64) {
var b Mpflt
b.SetFloat64(c)
a.Mul(&b)
}
func (a *Mpflt) Quo(b *Mpflt) {
if Mpdebug {
fmt.Printf("%v\n / %v\n", a, b)
}
a.Val.Quo(&a.Val, &b.Val)
if Mpdebug {
fmt.Printf(" = %v\n\n", a)
}
}
func (a *Mpflt) Cmp(b *Mpflt) int {
return a.Val.Cmp(&b.Val)
}
func (a *Mpflt) CmpFloat64(c float64) int {
if c == 0 {
return a.Val.Sign() // common case shortcut
}
return a.Val.Cmp(big.NewFloat(c))
}
func (a *Mpflt) Float64() float64 {
x, _ := a.Val.Float64()
// check for overflow
if math.IsInf(x, 0) && nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpflt Float64")
}
return x + 0 // avoid -0 (should not be needed, but be conservative)
}
func (a *Mpflt) Float32() float64 {
x32, _ := a.Val.Float32()
x := float64(x32)
// check for overflow
if math.IsInf(x, 0) && nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpflt Float32")
}
return x + 0 // avoid -0 (should not be needed, but be conservative)
}
func (a *Mpflt) SetFloat64(c float64) {
if Mpdebug {
fmt.Printf("\nconst %g", c)
}
// convert -0 to 0
if c == 0 {
c = 0
}
a.Val.SetFloat64(c)
if Mpdebug {
fmt.Printf(" = %v\n", a)
}
}
func (a *Mpflt) Neg() {
// avoid -0
if a.Val.Sign() != 0 {
a.Val.Neg(&a.Val)
}
}
func (a *Mpflt) SetString(as string) {
f, _, err := a.Val.Parse(as, 0)
if err != nil {
yyerror("malformed constant: %s (%v)", as, err)
a.Val.SetFloat64(0)
return
}
if f.IsInf() {
yyerror("constant too large: %s", as)
a.Val.SetFloat64(0)
return
}
// -0 becomes 0
if f.Sign() == 0 && f.Signbit() {
a.Val.SetFloat64(0)
}
}
func (f *Mpflt) String() string {
return f.Val.Text('b', 0)
}
func (fvp *Mpflt) GoString() string {
// determine sign
sign := ""
f := &fvp.Val
if f.Sign() < 0 {
sign = "-"
f = new(big.Float).Abs(f)
}
// Don't try to convert infinities (will not terminate).
if f.IsInf() {
return sign + "Inf"
}
// Use exact fmt formatting if in float64 range (common case):
// proceed if f doesn't underflow to 0 or overflow to inf.
if x, _ := f.Float64(); f.Sign() == 0 == (x == 0) && !math.IsInf(x, 0) {
return fmt.Sprintf("%s%.6g", sign, x)
}
// Out of float64 range. Do approximate manual to decimal
// conversion to avoid precise but possibly slow Float
// formatting.
// f = mant * 2**exp
var mant big.Float
exp := f.MantExp(&mant) // 0.5 <= mant < 1.0
// approximate float64 mantissa m and decimal exponent d
// f ~ m * 10**d
m, _ := mant.Float64() // 0.5 <= m < 1.0
d := float64(exp) * (math.Ln2 / math.Ln10) // log_10(2)
// adjust m for truncated (integer) decimal exponent e
e := int64(d)
m *= math.Pow(10, d-float64(e))
// ensure 1 <= m < 10
switch {
case m < 1-0.5e-6:
// The %.6g format below rounds m to 5 digits after the
// decimal point. Make sure that m*10 < 10 even after
// rounding up: m*10 + 0.5e-5 < 10 => m < 1 - 0.5e6.
m *= 10
e--
case m >= 10:
m /= 10
e++
}
return fmt.Sprintf("%s%.6ge%+d", sign, m, e)
}
// complex multiply v *= rv
// (a, b) * (c, d) = (a*c - b*d, b*c + a*d)
func (v *Mpcplx) Mul(rv *Mpcplx) {
var ac, ad, bc, bd Mpflt
ac.Set(&v.Real)
ac.Mul(&rv.Real) // ac
bd.Set(&v.Imag)
bd.Mul(&rv.Imag) // bd
bc.Set(&v.Imag)
bc.Mul(&rv.Real) // bc
ad.Set(&v.Real)
ad.Mul(&rv.Imag) // ad
v.Real.Set(&ac)
v.Real.Sub(&bd) // ac-bd
v.Imag.Set(&bc)
v.Imag.Add(&ad) // bc+ad
}
// complex divide v /= rv
// (a, b) / (c, d) = ((a*c + b*d), (b*c - a*d))/(c*c + d*d)
func (v *Mpcplx) Div(rv *Mpcplx) bool {
if rv.Real.CmpFloat64(0) == 0 && rv.Imag.CmpFloat64(0) == 0 {
return false
}
var ac, ad, bc, bd, cc_plus_dd Mpflt
cc_plus_dd.Set(&rv.Real)
cc_plus_dd.Mul(&rv.Real) // cc
ac.Set(&rv.Imag)
ac.Mul(&rv.Imag) // dd
cc_plus_dd.Add(&ac) // cc+dd
// We already checked that c and d are not both zero, but we can't
// assume that c²+d² != 0 follows, because for tiny values of c
// and/or d c²+d² can underflow to zero. Check that c²+d² is
// nonzero, return if it's not.
if cc_plus_dd.CmpFloat64(0) == 0 {
return false
}
ac.Set(&v.Real)
ac.Mul(&rv.Real) // ac
bd.Set(&v.Imag)
bd.Mul(&rv.Imag) // bd
bc.Set(&v.Imag)
bc.Mul(&rv.Real) // bc
ad.Set(&v.Real)
ad.Mul(&rv.Imag) // ad
v.Real.Set(&ac)
v.Real.Add(&bd) // ac+bd
v.Real.Quo(&cc_plus_dd) // (ac+bd)/(cc+dd)
v.Imag.Set(&bc)
v.Imag.Sub(&ad) // bc-ad
v.Imag.Quo(&cc_plus_dd) // (bc+ad)/(cc+dd)
return true
}
func (v *Mpcplx) String() string {
return fmt.Sprintf("(%s+%si)", v.Real.String(), v.Imag.String())
}
func (v *Mpcplx) GoString() string {
var re string
sre := v.Real.CmpFloat64(0)
if sre != 0 {
re = v.Real.GoString()
}
var im string
sim := v.Imag.CmpFloat64(0)
if sim != 0 {
im = v.Imag.GoString()
}
switch {
case sre == 0 && sim == 0:
return "0"
case sre == 0:
return im + "i"
case sim == 0:
return re
case sim < 0:
return fmt.Sprintf("(%s%si)", re, im)
default:
return fmt.Sprintf("(%s+%si)", re, im)
}
}

304
src/cmd/compile/internal/gc/mpint.go
View file

@ -1,304 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
import (
"fmt"
"math/big"
)
// implements integer arithmetic
// Mpint represents an integer constant.
type Mpint struct {
Val big.Int
Ovf bool // set if Val overflowed compiler limit (sticky)
Rune bool // set if syntax indicates default type rune
}
func (a *Mpint) SetOverflow() {
a.Val.SetUint64(1) // avoid spurious div-zero errors
a.Ovf = true
}
func (a *Mpint) checkOverflow(extra int) bool {
// We don't need to be precise here, any reasonable upper limit would do.
// For now, use existing limit so we pass all the tests unchanged.
if a.Val.BitLen()+extra > Mpprec {
a.SetOverflow()
}
return a.Ovf
}
func (a *Mpint) Set(b *Mpint) {
a.Val.Set(&b.Val)
}
func (a *Mpint) SetFloat(b *Mpflt) bool {
// avoid converting huge floating-point numbers to integers
// (2*Mpprec is large enough to permit all tests to pass)
if b.Val.MantExp(nil) > 2*Mpprec {
a.SetOverflow()
return false
}
if _, acc := b.Val.Int(&a.Val); acc == big.Exact {
return true
}
const delta = 16 // a reasonably small number of bits > 0
var t big.Float
t.SetPrec(Mpprec - delta)
// try rounding down a little
t.SetMode(big.ToZero)
t.Set(&b.Val)
if _, acc := t.Int(&a.Val); acc == big.Exact {
return true
}
// try rounding up a little
t.SetMode(big.AwayFromZero)
t.Set(&b.Val)
if _, acc := t.Int(&a.Val); acc == big.Exact {
return true
}
a.Ovf = false
return false
}
func (a *Mpint) Add(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Add")
}
a.SetOverflow()
return
}
a.Val.Add(&a.Val, &b.Val)
if a.checkOverflow(0) {
yyerror("constant addition overflow")
}
}
func (a *Mpint) Sub(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Sub")
}
a.SetOverflow()
return
}
a.Val.Sub(&a.Val, &b.Val)
if a.checkOverflow(0) {
yyerror("constant subtraction overflow")
}
}
func (a *Mpint) Mul(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Mul")
}
a.SetOverflow()
return
}
a.Val.Mul(&a.Val, &b.Val)
if a.checkOverflow(0) {
yyerror("constant multiplication overflow")
}
}
func (a *Mpint) Quo(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Quo")
}
a.SetOverflow()
return
}
a.Val.Quo(&a.Val, &b.Val)
if a.checkOverflow(0) {
// can only happen for div-0 which should be checked elsewhere
yyerror("constant division overflow")
}
}
func (a *Mpint) Rem(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Rem")
}
a.SetOverflow()
return
}
a.Val.Rem(&a.Val, &b.Val)
if a.checkOverflow(0) {
// should never happen
yyerror("constant modulo overflow")
}
}
func (a *Mpint) Or(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Or")
}
a.SetOverflow()
return
}
a.Val.Or(&a.Val, &b.Val)
}
func (a *Mpint) And(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint And")
}
a.SetOverflow()
return
}
a.Val.And(&a.Val, &b.Val)
}
func (a *Mpint) AndNot(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint AndNot")
}
a.SetOverflow()
return
}
a.Val.AndNot(&a.Val, &b.Val)
}
func (a *Mpint) Xor(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Xor")
}
a.SetOverflow()
return
}
a.Val.Xor(&a.Val, &b.Val)
}
func (a *Mpint) Lsh(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Lsh")
}
a.SetOverflow()
return
}
s := b.Int64()
if s < 0 || s >= Mpprec {
msg := "shift count too large"
if s < 0 {
msg = "invalid negative shift count"
}
yyerror("%s: %d", msg, s)
a.SetInt64(0)
return
}
if a.checkOverflow(int(s)) {
yyerror("constant shift overflow")
return
}
a.Val.Lsh(&a.Val, uint(s))
}
func (a *Mpint) Rsh(b *Mpint) {
if a.Ovf || b.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("ovf in Mpint Rsh")
}
a.SetOverflow()
return
}
s := b.Int64()
if s < 0 {
yyerror("invalid negative shift count: %d", s)
if a.Val.Sign() < 0 {
a.SetInt64(-1)
} else {
a.SetInt64(0)
}
return
}
a.Val.Rsh(&a.Val, uint(s))
}
func (a *Mpint) Cmp(b *Mpint) int {
return a.Val.Cmp(&b.Val)
}
func (a *Mpint) CmpInt64(c int64) int {
if c == 0 {
return a.Val.Sign() // common case shortcut
}
return a.Val.Cmp(big.NewInt(c))
}
func (a *Mpint) Neg() {
a.Val.Neg(&a.Val)
}
func (a *Mpint) Int64() int64 {
if a.Ovf {
if nsavederrors+nerrors == 0 {
Fatalf("constant overflow")
}
return 0
}
return a.Val.Int64()
}
func (a *Mpint) SetInt64(c int64) {
a.Val.SetInt64(c)
}
func (a *Mpint) SetString(as string) {
_, ok := a.Val.SetString(as, 0)
if !ok {
// The lexer checks for correct syntax of the literal
// and reports detailed errors. Thus SetString should
// never fail (in theory it might run out of memory,
// but that wouldn't be reported as an error here).
Fatalf("malformed integer constant: %s", as)
return
}
if a.checkOverflow(0) {
yyerror("constant too large: %s", as)
}
}
func (a *Mpint) GoString() string {
return a.Val.String()
}
func (a *Mpint) String() string {
return fmt.Sprintf("%#x", &a.Val)
}

780
src/cmd/compile/internal/gc/noder.go
View file

File diff suppressed because it is too large Load diff

271
src/cmd/compile/internal/gc/obj.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/bio"
"cmd/internal/obj"
@ -13,6 +15,7 @@ import (
"crypto/sha256"
"encoding/json"
"fmt"
"go/constant"
"io"
"io/ioutil"
"os"
@ -46,20 +49,20 @@ const (
)
func dumpobj() {
if linkobj == "" {
dumpobj1(outfile, modeCompilerObj|modeLinkerObj)
if base.Flag.LinkObj == "" {
dumpobj1(base.Flag.LowerO, modeCompilerObj|modeLinkerObj)
return
}
dumpobj1(outfile, modeCompilerObj)
dumpobj1(linkobj, modeLinkerObj)
dumpobj1(base.Flag.LowerO, modeCompilerObj)
dumpobj1(base.Flag.LinkObj, modeLinkerObj)
}
func dumpobj1(outfile string, mode int) {
bout, err := bio.Create(outfile)
if err != nil {
flusherrors()
base.FlushErrors()
fmt.Printf("can't create %s: %v\n", outfile, err)
errorexit()
base.ErrorExit()
}
defer bout.Close()
bout.WriteString("!<arch>\n")
@ -78,10 +81,10 @@ func dumpobj1(outfile string, mode int) {
func printObjHeader(bout *bio.Writer) {
fmt.Fprintf(bout, "go object %s %s %s %s\n", objabi.GOOS, objabi.GOARCH, objabi.Version, objabi.Expstring())
if buildid != "" {
fmt.Fprintf(bout, "build id %q\n", buildid)
if base.Flag.BuildID != "" {
fmt.Fprintf(bout, "build id %q\n", base.Flag.BuildID)
}
if localpkg.Name == "main" {
if ir.LocalPkg.Name == "main" {
fmt.Fprintf(bout, "main\n")
}
fmt.Fprintf(bout, "\n") // header ends with blank line
@ -139,7 +142,7 @@ func dumpdata() {
for {
for i := xtops; i < len(xtop); i++ {
n := xtop[i]
if n.Op == ODCLFUNC {
if n.Op() == ir.ODCLFUNC {
funccompile(n)
}
}
@ -168,13 +171,13 @@ func dumpdata() {
addGCLocals()
if exportlistLen != len(exportlist) {
Fatalf("exportlist changed after compile functions loop")
base.Fatalf("exportlist changed after compile functions loop")
}
if ptabsLen != len(ptabs) {
Fatalf("ptabs changed after compile functions loop")
base.Fatalf("ptabs changed after compile functions loop")
}
if itabsLen != len(itabs) {
Fatalf("itabs changed after compile functions loop")
base.Fatalf("itabs changed after compile functions loop")
}
}
@ -186,27 +189,27 @@ func dumpLinkerObj(bout *bio.Writer) {
fmt.Fprintf(bout, "\n$$\n\n$$\n\n")
fmt.Fprintf(bout, "\n$$ // cgo\n")
if err := json.NewEncoder(bout).Encode(pragcgobuf); err != nil {
Fatalf("serializing pragcgobuf: %v", err)
base.Fatalf("serializing pragcgobuf: %v", err)
}
fmt.Fprintf(bout, "\n$$\n\n")
}
fmt.Fprintf(bout, "\n!\n")
obj.WriteObjFile(Ctxt, bout)
obj.WriteObjFile(base.Ctxt, bout)
}
func addptabs() {
if !Ctxt.Flag_dynlink || localpkg.Name != "main" {
if !base.Ctxt.Flag_dynlink || ir.LocalPkg.Name != "main" {
return
}
for _, exportn := range exportlist {
s := exportn.Sym
n := asNode(s.Def)
s := exportn.Sym()
n := ir.AsNode(s.Def)
if n == nil {
continue
}
if n.Op != ONAME {
if n.Op() != ir.ONAME {
continue
}
if !types.IsExported(s.Name) {
@ -215,76 +218,61 @@ func addptabs() {
if s.Pkg.Name != "main" {
continue
}
if n.Type.Etype == TFUNC && n.Class() == PFUNC {
if n.Type().Etype == types.TFUNC && n.Class() == ir.PFUNC {
// function
ptabs = append(ptabs, ptabEntry{s: s, t: asNode(s.Def).Type})
ptabs = append(ptabs, ptabEntry{s: s, t: ir.AsNode(s.Def).Type()})
} else {
// variable
ptabs = append(ptabs, ptabEntry{s: s, t: types.NewPtr(asNode(s.Def).Type)})
ptabs = append(ptabs, ptabEntry{s: s, t: types.NewPtr(ir.AsNode(s.Def).Type())})
}
}
}
func dumpGlobal(n *Node) {
if n.Type == nil {
Fatalf("external %v nil type\n", n)
func dumpGlobal(n ir.Node) {
if n.Type() == nil {
base.Fatalf("external %v nil type\n", n)
}
if n.Class() == PFUNC {
if n.Class() == ir.PFUNC {
return
}
if n.Sym.Pkg != localpkg {
if n.Sym().Pkg != ir.LocalPkg {
return
}
dowidth(n.Type)
dowidth(n.Type())
ggloblnod(n)
}
func dumpGlobalConst(n *Node) {
func dumpGlobalConst(n ir.Node) {
// only export typed constants
t := n.Type
t := n.Type()
if t == nil {
return
}
if n.Sym.Pkg != localpkg {
if n.Sym().Pkg != ir.LocalPkg {
return
}
// only export integer constants for now
switch t.Etype {
case TINT8:
case TINT16:
case TINT32:
case TINT64:
case TINT:
case TUINT8:
case TUINT16:
case TUINT32:
case TUINT64:
case TUINT:
case TUINTPTR:
// ok
case TIDEAL:
if !Isconst(n, CTINT) {
if !t.IsInteger() {
return
}
x := n.Val().U.(*Mpint)
if x.Cmp(minintval[TINT]) < 0 || x.Cmp(maxintval[TINT]) > 0 {
v := n.Val()
if t.IsUntyped() {
// Export untyped integers as int (if they fit).
t = types.Types[types.TINT]
if doesoverflow(v, t) {
return
}
// Ideal integers we export as int (if they fit).
t = types.Types[TINT]
default:
return
}
Ctxt.DwarfIntConst(myimportpath, n.Sym.Name, typesymname(t), n.Int64Val())
base.Ctxt.DwarfIntConst(base.Ctxt.Pkgpath, n.Sym().Name, typesymname(t), ir.Int64Val(t, v))
}
func dumpglobls() {
// add globals
for _, n := range externdcl {
switch n.Op {
case ONAME:
switch n.Op() {
case ir.ONAME:
dumpGlobal(n)
case OLITERAL:
case ir.OLITERAL:
dumpGlobalConst(n)
}
}
@ -307,7 +295,7 @@ func dumpglobls() {
// This is done during the sequential phase after compilation, since
// global symbols can't be declared during parallel compilation.
func addGCLocals() {
for _, s := range Ctxt.Text {
for _, s := range base.Ctxt.Text {
fn := s.Func()
if fn == nil {
continue
@ -330,9 +318,9 @@ func addGCLocals() {
func duintxx(s *obj.LSym, off int, v uint64, wid int) int {
if off&(wid-1) != 0 {
Fatalf("duintxxLSym: misaligned: v=%d wid=%d off=%d", v, wid, off)
base.Fatalf("duintxxLSym: misaligned: v=%d wid=%d off=%d", v, wid, off)
}
s.WriteInt(Ctxt, int64(off), wid, int64(v))
s.WriteInt(base.Ctxt, int64(off), wid, int64(v))
return off + wid
}
@ -383,7 +371,7 @@ func stringsym(pos src.XPos, s string) (data *obj.LSym) {
symname = strconv.Quote(s)
}
symdata := Ctxt.Lookup(stringSymPrefix + symname)
symdata := base.Ctxt.Lookup(stringSymPrefix + symname)
if !symdata.OnList() {
off := dstringdata(symdata, 0, s, pos, "string")
ggloblsym(symdata, int32(off), obj.DUPOK|obj.RODATA|obj.LOCAL)
@ -426,7 +414,7 @@ func fileStringSym(pos src.XPos, file string, readonly bool, hash []byte) (*obj.
if readonly {
sym = stringsym(pos, string(data))
} else {
sym = slicedata(pos, string(data)).Sym.Linksym()
sym = slicedata(pos, string(data)).Sym().Linksym()
}
if len(hash) > 0 {
sum := sha256.Sum256(data)
@ -461,7 +449,7 @@ func fileStringSym(pos src.XPos, file string, readonly bool, hash []byte) (*obj.
var symdata *obj.LSym
if readonly {
symname := fmt.Sprintf(stringSymPattern, size, sum)
symdata = Ctxt.Lookup(stringSymPrefix + symname)
symdata = base.Ctxt.Lookup(stringSymPrefix + symname)
if !symdata.OnList() {
info := symdata.NewFileInfo()
info.Name = file
@ -474,7 +462,7 @@ func fileStringSym(pos src.XPos, file string, readonly bool, hash []byte) (*obj.
} else {
// Emit a zero-length data symbol
// and then fix up length and content to use file.
symdata = slicedata(pos, "").Sym.Linksym()
symdata = slicedata(pos, "").Sym().Linksym()
symdata.Size = size
symdata.Type = objabi.SNOPTRDATA
info := symdata.NewFileInfo()
@ -487,12 +475,12 @@ func fileStringSym(pos src.XPos, file string, readonly bool, hash []byte) (*obj.
var slicedataGen int
func slicedata(pos src.XPos, s string) *Node {
func slicedata(pos src.XPos, s string) ir.Node {
slicedataGen++
symname := fmt.Sprintf(".gobytes.%d", slicedataGen)
sym := localpkg.Lookup(symname)
symnode := newname(sym)
sym.Def = asTypesNode(symnode)
sym := ir.LocalPkg.Lookup(symname)
symnode := NewName(sym)
sym.Def = symnode
lsym := sym.Linksym()
off := dstringdata(lsym, 0, s, pos, "slice")
@ -501,11 +489,11 @@ func slicedata(pos src.XPos, s string) *Node {
return symnode
}
func slicebytes(nam *Node, s string) {
if nam.Op != ONAME {
Fatalf("slicebytes %v", nam)
func slicebytes(nam ir.Node, s string) {
if nam.Op() != ir.ONAME {
base.Fatalf("slicebytes %v", nam)
}
slicesym(nam, slicedata(nam.Pos, s), int64(len(s)))
slicesym(nam, slicedata(nam.Pos(), s), int64(len(s)))
}
func dstringdata(s *obj.LSym, off int, t string, pos src.XPos, what string) int {
@ -513,126 +501,133 @@ func dstringdata(s *obj.LSym, off int, t string, pos src.XPos, what string) int
// causing a cryptic error message by the linker. Check for oversize objects here
// and provide a useful error message instead.
if int64(len(t)) > 2e9 {
yyerrorl(pos, "%v with length %v is too big", what, len(t))
base.ErrorfAt(pos, "%v with length %v is too big", what, len(t))
return 0
}
s.WriteString(Ctxt, int64(off), len(t), t)
s.WriteString(base.Ctxt, int64(off), len(t), t)
return off + len(t)
}
func dsymptr(s *obj.LSym, off int, x *obj.LSym, xoff int) int {
off = int(Rnd(int64(off), int64(Widthptr)))
s.WriteAddr(Ctxt, int64(off), Widthptr, x, int64(xoff))
s.WriteAddr(base.Ctxt, int64(off), Widthptr, x, int64(xoff))
off += Widthptr
return off
}
func dsymptrOff(s *obj.LSym, off int, x *obj.LSym) int {
s.WriteOff(Ctxt, int64(off), x, 0)
s.WriteOff(base.Ctxt, int64(off), x, 0)
off += 4
return off
}
func dsymptrWeakOff(s *obj.LSym, off int, x *obj.LSym) int {
s.WriteWeakOff(Ctxt, int64(off), x, 0)
s.WriteWeakOff(base.Ctxt, int64(off), x, 0)
off += 4
return off
}
// slicesym writes a static slice symbol {&arr, lencap, lencap} to n.
// arr must be an ONAME. slicesym does not modify n.
func slicesym(n, arr *Node, lencap int64) {
s := n.Sym.Linksym()
base := n.Xoffset
if arr.Op != ONAME {
Fatalf("slicesym non-name arr %v", arr)
func slicesym(n, arr ir.Node, lencap int64) {
s := n.Sym().Linksym()
off := n.Offset()
if arr.Op() != ir.ONAME {
base.Fatalf("slicesym non-name arr %v", arr)
}
s.WriteAddr(Ctxt, base, Widthptr, arr.Sym.Linksym(), arr.Xoffset)
s.WriteInt(Ctxt, base+sliceLenOffset, Widthptr, lencap)
s.WriteInt(Ctxt, base+sliceCapOffset, Widthptr, lencap)
s.WriteAddr(base.Ctxt, off, Widthptr, arr.Sym().Linksym(), arr.Offset())
s.WriteInt(base.Ctxt, off+sliceLenOffset, Widthptr, lencap)
s.WriteInt(base.Ctxt, off+sliceCapOffset, Widthptr, lencap)
}
// addrsym writes the static address of a to n. a must be an ONAME.
// Neither n nor a is modified.
func addrsym(n, a *Node) {
if n.Op != ONAME {
Fatalf("addrsym n op %v", n.Op)
func addrsym(n, a ir.Node) {
if n.Op() != ir.ONAME {
base.Fatalf("addrsym n op %v", n.Op())
}
if n.Sym == nil {
Fatalf("addrsym nil n sym")
if n.Sym() == nil {
base.Fatalf("addrsym nil n sym")
}
if a.Op != ONAME {
Fatalf("addrsym a op %v", a.Op)
if a.Op() != ir.ONAME {
base.Fatalf("addrsym a op %v", a.Op())
}
s := n.Sym.Linksym()
s.WriteAddr(Ctxt, n.Xoffset, Widthptr, a.Sym.Linksym(), a.Xoffset)
s := n.Sym().Linksym()
s.WriteAddr(base.Ctxt, n.Offset(), Widthptr, a.Sym().Linksym(), a.Offset())
}
// pfuncsym writes the static address of f to n. f must be a global function.
// Neither n nor f is modified.
func pfuncsym(n, f *Node) {
if n.Op != ONAME {
Fatalf("pfuncsym n op %v", n.Op)
func pfuncsym(n, f ir.Node) {
if n.Op() != ir.ONAME {
base.Fatalf("pfuncsym n op %v", n.Op())
}
if n.Sym == nil {
Fatalf("pfuncsym nil n sym")
if n.Sym() == nil {
base.Fatalf("pfuncsym nil n sym")
}
if f.Class() != PFUNC {
Fatalf("pfuncsym class not PFUNC %d", f.Class())
if f.Class() != ir.PFUNC {
base.Fatalf("pfuncsym class not PFUNC %d", f.Class())
}
s := n.Sym.Linksym()
s.WriteAddr(Ctxt, n.Xoffset, Widthptr, funcsym(f.Sym).Linksym(), f.Xoffset)
s := n.Sym().Linksym()
s.WriteAddr(base.Ctxt, n.Offset(), Widthptr, funcsym(f.Sym()).Linksym(), f.Offset())
}
// litsym writes the static literal c to n.
// Neither n nor c is modified.
func litsym(n, c *Node, wid int) {
if n.Op != ONAME {
Fatalf("litsym n op %v", n.Op)
func litsym(n, c ir.Node, wid int) {
if n.Op() != ir.ONAME {
base.Fatalf("litsym n op %v", n.Op())
}
if c.Op != OLITERAL {
Fatalf("litsym c op %v", c.Op)
if n.Sym() == nil {
base.Fatalf("litsym nil n sym")
}
if n.Sym == nil {
Fatalf("litsym nil n sym")
if !types.Identical(n.Type(), c.Type()) {
base.Fatalf("litsym: type mismatch: %v has type %v, but %v has type %v", n, n.Type(), c, c.Type())
}
s := n.Sym.Linksym()
switch u := c.Val().U.(type) {
case bool:
i := int64(obj.Bool2int(u))
s.WriteInt(Ctxt, n.Xoffset, wid, i)
if c.Op() == ir.ONIL {
return
}
if c.Op() != ir.OLITERAL {
base.Fatalf("litsym c op %v", c.Op())
}
s := n.Sym().Linksym()
switch u := c.Val(); u.Kind() {
case constant.Bool:
i := int64(obj.Bool2int(constant.BoolVal(u)))
s.WriteInt(base.Ctxt, n.Offset(), wid, i)
case *Mpint:
s.WriteInt(Ctxt, n.Xoffset, wid, u.Int64())
case constant.Int:
s.WriteInt(base.Ctxt, n.Offset(), wid, ir.Int64Val(n.Type(), u))
case *Mpflt:
f := u.Float64()
switch n.Type.Etype {
case TFLOAT32:
s.WriteFloat32(Ctxt, n.Xoffset, float32(f))
case TFLOAT64:
s.WriteFloat64(Ctxt, n.Xoffset, f)
case constant.Float:
f, _ := constant.Float64Val(u)
switch n.Type().Etype {
case types.TFLOAT32:
s.WriteFloat32(base.Ctxt, n.Offset(), float32(f))
case types.TFLOAT64:
s.WriteFloat64(base.Ctxt, n.Offset(), f)
}
case *Mpcplx:
r := u.Real.Float64()
i := u.Imag.Float64()
switch n.Type.Etype {
case TCOMPLEX64:
s.WriteFloat32(Ctxt, n.Xoffset, float32(r))
s.WriteFloat32(Ctxt, n.Xoffset+4, float32(i))
case TCOMPLEX128:
s.WriteFloat64(Ctxt, n.Xoffset, r)
s.WriteFloat64(Ctxt, n.Xoffset+8, i)
case constant.Complex:
re, _ := constant.Float64Val(constant.Real(u))
im, _ := constant.Float64Val(constant.Imag(u))
switch n.Type().Etype {
case types.TCOMPLEX64:
s.WriteFloat32(base.Ctxt, n.Offset(), float32(re))
s.WriteFloat32(base.Ctxt, n.Offset()+4, float32(im))
case types.TCOMPLEX128:
s.WriteFloat64(base.Ctxt, n.Offset(), re)
s.WriteFloat64(base.Ctxt, n.Offset()+8, im)
}
case string:
symdata := stringsym(n.Pos, u)
s.WriteAddr(Ctxt, n.Xoffset, Widthptr, symdata, 0)
s.WriteInt(Ctxt, n.Xoffset+int64(Widthptr), Widthptr, int64(len(u)))
case constant.String:
i := constant.StringVal(u)
symdata := stringsym(n.Pos(), i)
s.WriteAddr(base.Ctxt, n.Offset(), Widthptr, symdata, 0)
s.WriteInt(base.Ctxt, n.Offset()+int64(Widthptr), Widthptr, int64(len(i)))
default:
Fatalf("litsym unhandled OLITERAL %v", c)
base.Fatalf("litsym unhandled OLITERAL %v", c)
}
}

175
src/cmd/compile/internal/gc/op_string.go
View file

@ -1,175 +0,0 @@
// Code generated by "stringer -type=Op -trimprefix=O"; DO NOT EDIT.
package gc
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[OXXX-0]
_ = x[ONAME-1]
_ = x[ONONAME-2]
_ = x[OTYPE-3]
_ = x[OPACK-4]
_ = x[OLITERAL-5]
_ = x[OADD-6]
_ = x[OSUB-7]
_ = x[OOR-8]
_ = x[OXOR-9]
_ = x[OADDSTR-10]
_ = x[OADDR-11]
_ = x[OANDAND-12]
_ = x[OAPPEND-13]
_ = x[OBYTES2STR-14]
_ = x[OBYTES2STRTMP-15]
_ = x[ORUNES2STR-16]
_ = x[OSTR2BYTES-17]
_ = x[OSTR2BYTESTMP-18]
_ = x[OSTR2RUNES-19]
_ = x[OAS-20]
_ = x[OAS2-21]
_ = x[OAS2DOTTYPE-22]
_ = x[OAS2FUNC-23]
_ = x[OAS2MAPR-24]
_ = x[OAS2RECV-25]
_ = x[OASOP-26]
_ = x[OCALL-27]
_ = x[OCALLFUNC-28]
_ = x[OCALLMETH-29]
_ = x[OCALLINTER-30]
_ = x[OCALLPART-31]
_ = x[OCAP-32]
_ = x[OCLOSE-33]
_ = x[OCLOSURE-34]
_ = x[OCOMPLIT-35]
_ = x[OMAPLIT-36]
_ = x[OSTRUCTLIT-37]
_ = x[OARRAYLIT-38]
_ = x[OSLICELIT-39]
_ = x[OPTRLIT-40]
_ = x[OCONV-41]
_ = x[OCONVIFACE-42]
_ = x[OCONVNOP-43]
_ = x[OCOPY-44]
_ = x[ODCL-45]
_ = x[ODCLFUNC-46]
_ = x[ODCLFIELD-47]
_ = x[ODCLCONST-48]
_ = x[ODCLTYPE-49]
_ = x[ODELETE-50]
_ = x[ODOT-51]
_ = x[ODOTPTR-52]
_ = x[ODOTMETH-53]
_ = x[ODOTINTER-54]
_ = x[OXDOT-55]
_ = x[ODOTTYPE-56]
_ = x[ODOTTYPE2-57]
_ = x[OEQ-58]
_ = x[ONE-59]
_ = x[OLT-60]
_ = x[OLE-61]
_ = x[OGE-62]
_ = x[OGT-63]
_ = x[ODEREF-64]
_ = x[OINDEX-65]
_ = x[OINDEXMAP-66]
_ = x[OKEY-67]
_ = x[OSTRUCTKEY-68]
_ = x[OLEN-69]
_ = x[OMAKE-70]
_ = x[OMAKECHAN-71]
_ = x[OMAKEMAP-72]
_ = x[OMAKESLICE-73]
_ = x[OMAKESLICECOPY-74]
_ = x[OMUL-75]
_ = x[ODIV-76]
_ = x[OMOD-77]
_ = x[OLSH-78]
_ = x[ORSH-79]
_ = x[OAND-80]
_ = x[OANDNOT-81]
_ = x[ONEW-82]
_ = x[ONEWOBJ-83]
_ = x[ONOT-84]
_ = x[OBITNOT-85]
_ = x[OPLUS-86]
_ = x[ONEG-87]
_ = x[OOROR-88]
_ = x[OPANIC-89]
_ = x[OPRINT-90]
_ = x[OPRINTN-91]
_ = x[OPAREN-92]
_ = x[OSEND-93]
_ = x[OSLICE-94]
_ = x[OSLICEARR-95]
_ = x[OSLICESTR-96]
_ = x[OSLICE3-97]
_ = x[OSLICE3ARR-98]
_ = x[OSLICEHEADER-99]
_ = x[ORECOVER-100]
_ = x[ORECV-101]
_ = x[ORUNESTR-102]
_ = x[OSELRECV-103]
_ = x[OSELRECV2-104]
_ = x[OIOTA-105]
_ = x[OREAL-106]
_ = x[OIMAG-107]
_ = x[OCOMPLEX-108]
_ = x[OALIGNOF-109]
_ = x[OOFFSETOF-110]
_ = x[OSIZEOF-111]
_ = x[OBLOCK-112]
_ = x[OBREAK-113]
_ = x[OCASE-114]
_ = x[OCONTINUE-115]
_ = x[ODEFER-116]
_ = x[OEMPTY-117]
_ = x[OFALL-118]
_ = x[OFOR-119]
_ = x[OFORUNTIL-120]
_ = x[OGOTO-121]
_ = x[OIF-122]
_ = x[OLABEL-123]
_ = x[OGO-124]
_ = x[ORANGE-125]
_ = x[ORETURN-126]
_ = x[OSELECT-127]
_ = x[OSWITCH-128]
_ = x[OTYPESW-129]
_ = x[OTCHAN-130]
_ = x[OTMAP-131]
_ = x[OTSTRUCT-132]
_ = x[OTINTER-133]
_ = x[OTFUNC-134]
_ = x[OTARRAY-135]
_ = x[ODDD-136]
_ = x[OINLCALL-137]
_ = x[OEFACE-138]
_ = x[OITAB-139]
_ = x[OIDATA-140]
_ = x[OSPTR-141]
_ = x[OCLOSUREVAR-142]
_ = x[OCFUNC-143]
_ = x[OCHECKNIL-144]
_ = x[OVARDEF-145]
_ = x[OVARKILL-146]
_ = x[OVARLIVE-147]
_ = x[ORESULT-148]
_ = x[OINLMARK-149]
_ = x[ORETJMP-150]
_ = x[OGETG-151]
_ = x[OEND-152]
}
const _Op_name = "XXXNAMENONAMETYPEPACKLITERALADDSUBORXORADDSTRADDRANDANDAPPENDBYTES2STRBYTES2STRTMPRUNES2STRSTR2BYTESSTR2BYTESTMPSTR2RUNESASAS2AS2DOTTYPEAS2FUNCAS2MAPRAS2RECVASOPCALLCALLFUNCCALLMETHCALLINTERCALLPARTCAPCLOSECLOSURECOMPLITMAPLITSTRUCTLITARRAYLITSLICELITPTRLITCONVCONVIFACECONVNOPCOPYDCLDCLFUNCDCLFIELDDCLCONSTDCLTYPEDELETEDOTDOTPTRDOTMETHDOTINTERXDOTDOTTYPEDOTTYPE2EQNELTLEGEGTDEREFINDEXINDEXMAPKEYSTRUCTKEYLENMAKEMAKECHANMAKEMAPMAKESLICEMAKESLICECOPYMULDIVMODLSHRSHANDANDNOTNEWNEWOBJNOTBITNOTPLUSNEGORORPANICPRINTPRINTNPARENSENDSLICESLICEARRSLICESTRSLICE3SLICE3ARRSLICEHEADERRECOVERRECVRUNESTRSELRECVSELRECV2IOTAREALIMAGCOMPLEXALIGNOFOFFSETOFSIZEOFBLOCKBREAKCASECONTINUEDEFEREMPTYFALLFORFORUNTILGOTOIFLABELGORANGERETURNSELECTSWITCHTYPESWTCHANTMAPTSTRUCTTINTERTFUNCTARRAYDDDINLCALLEFACEITABIDATASPTRCLOSUREVARCFUNCCHECKNILVARDEFVARKILLVARLIVERESULTINLMARKRETJMPGETGEND"
var _Op_index = [...]uint16{0, 3, 7, 13, 17, 21, 28, 31, 34, 36, 39, 45, 49, 55, 61, 70, 82, 91, 100, 112, 121, 123, 126, 136, 143, 150, 157, 161, 165, 173, 181, 190, 198, 201, 206, 213, 220, 226, 235, 243, 251, 257, 261, 270, 277, 281, 284, 291, 299, 307, 314, 320, 323, 329, 336, 344, 348, 355, 363, 365, 367, 369, 371, 373, 375, 380, 385, 393, 396, 405, 408, 412, 420, 427, 436, 449, 452, 455, 458, 461, 464, 467, 473, 476, 482, 485, 491, 495, 498, 502, 507, 512, 518, 523, 527, 532, 540, 548, 554, 563, 574, 581, 585, 592, 599, 607, 611, 615, 619, 626, 633, 641, 647, 652, 657, 661, 669, 674, 679, 683, 686, 694, 698, 700, 705, 707, 712, 718, 724, 730, 736, 741, 745, 752, 758, 763, 769, 772, 779, 784, 788, 793, 797, 807, 812, 820, 826, 833, 840, 846, 853, 859, 863, 866}
func (i Op) String() string {
if i >= Op(len(_Op_index)-1) {
return "Op(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Op_name[_Op_index[i]:_Op_index[i+1]]
}

926
src/cmd/compile/internal/gc/order.go
View file

File diff suppressed because it is too large Load diff

401
src/cmd/compile/internal/gc/pgen.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
"cmd/internal/dwarf"
@ -22,35 +24,34 @@ import (
// "Portable" code generation.
var (
nBackendWorkers int // number of concurrent backend workers, set by a compiler flag
compilequeue []*Node // functions waiting to be compiled
compilequeue []ir.Node // functions waiting to be compiled
)
func emitptrargsmap(fn *Node) {
if fn.funcname() == "_" || fn.Func.Nname.Sym.Linkname != "" {
func emitptrargsmap(fn ir.Node) {
if ir.FuncName(fn) == "_" || fn.Func().Nname.Sym().Linkname != "" {
return
}
lsym := Ctxt.Lookup(fn.Func.lsym.Name + ".args_stackmap")
lsym := base.Ctxt.Lookup(fn.Func().LSym.Name + ".args_stackmap")
nptr := int(fn.Type.ArgWidth() / int64(Widthptr))
nptr := int(fn.Type().ArgWidth() / int64(Widthptr))
bv := bvalloc(int32(nptr) * 2)
nbitmap := 1
if fn.Type.NumResults() > 0 {
if fn.Type().NumResults() > 0 {
nbitmap = 2
}
off := duint32(lsym, 0, uint32(nbitmap))
off = duint32(lsym, off, uint32(bv.n))
if fn.IsMethod() {
onebitwalktype1(fn.Type.Recvs(), 0, bv)
if ir.IsMethod(fn) {
onebitwalktype1(fn.Type().Recvs(), 0, bv)
}
if fn.Type.NumParams() > 0 {
onebitwalktype1(fn.Type.Params(), 0, bv)
if fn.Type().NumParams() > 0 {
onebitwalktype1(fn.Type().Params(), 0, bv)
}
off = dbvec(lsym, off, bv)
if fn.Type.NumResults() > 0 {
onebitwalktype1(fn.Type.Results(), 0, bv)
if fn.Type().NumResults() > 0 {
onebitwalktype1(fn.Type().Results(), 0, bv)
off = dbvec(lsym, off, bv)
}
@ -67,40 +68,40 @@ func emitptrargsmap(fn *Node) {
// really means, in memory, things with pointers needing zeroing at
// the top of the stack and increasing in size.
// Non-autos sort on offset.
func cmpstackvarlt(a, b *Node) bool {
if (a.Class() == PAUTO) != (b.Class() == PAUTO) {
return b.Class() == PAUTO
func cmpstackvarlt(a, b ir.Node) bool {
if (a.Class() == ir.PAUTO) != (b.Class() == ir.PAUTO) {
return b.Class() == ir.PAUTO
}
if a.Class() != PAUTO {
return a.Xoffset < b.Xoffset
if a.Class() != ir.PAUTO {
return a.Offset() < b.Offset()
}
if a.Name.Used() != b.Name.Used() {
return a.Name.Used()
if a.Name().Used() != b.Name().Used() {
return a.Name().Used()
}
ap := a.Type.HasPointers()
bp := b.Type.HasPointers()
ap := a.Type().HasPointers()
bp := b.Type().HasPointers()
if ap != bp {
return ap
}
ap = a.Name.Needzero()
bp = b.Name.Needzero()
ap = a.Name().Needzero()
bp = b.Name().Needzero()
if ap != bp {
return ap
}
if a.Type.Width != b.Type.Width {
return a.Type.Width > b.Type.Width
if a.Type().Width != b.Type().Width {
return a.Type().Width > b.Type().Width
}
return a.Sym.Name < b.Sym.Name
return a.Sym().Name < b.Sym().Name
}
// byStackvar implements sort.Interface for []*Node using cmpstackvarlt.
type byStackVar []*Node
type byStackVar []ir.Node
func (s byStackVar) Len() int { return len(s) }
func (s byStackVar) Less(i, j int) bool { return cmpstackvarlt(s[i], s[j]) }
@ -109,33 +110,33 @@ func (s byStackVar) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s *ssafn) AllocFrame(f *ssa.Func) {
s.stksize = 0
s.stkptrsize = 0
fn := s.curfn.Func
fn := s.curfn.Func()
// Mark the PAUTO's unused.
for _, ln := range fn.Dcl {
if ln.Class() == PAUTO {
ln.Name.SetUsed(false)
if ln.Class() == ir.PAUTO {
ln.Name().SetUsed(false)
}
}
for _, l := range f.RegAlloc {
if ls, ok := l.(ssa.LocalSlot); ok {
ls.N.(*Node).Name.SetUsed(true)
ls.N.Name().SetUsed(true)
}
}
scratchUsed := false
for _, b := range f.Blocks {
for _, v := range b.Values {
if n, ok := v.Aux.(*Node); ok {
if n, ok := v.Aux.(ir.Node); ok {
switch n.Class() {
case PPARAM, PPARAMOUT:
case ir.PPARAM, ir.PPARAMOUT:
// Don't modify nodfp; it is a global.
if n != nodfp {
n.Name.SetUsed(true)
n.Name().SetUsed(true)
}
case PAUTO:
n.Name.SetUsed(true)
case ir.PAUTO:
n.Name().SetUsed(true)
}
}
if !scratchUsed {
@ -146,7 +147,7 @@ func (s *ssafn) AllocFrame(f *ssa.Func) {
}
if f.Config.NeedsFpScratch && scratchUsed {
s.scratchFpMem = tempAt(src.NoXPos, s.curfn, types.Types[TUINT64])
s.scratchFpMem = tempAt(src.NoXPos, s.curfn, types.Types[types.TUINT64])
}
sort.Sort(byStackVar(fn.Dcl))
@ -154,18 +155,18 @@ func (s *ssafn) AllocFrame(f *ssa.Func) {
// Reassign stack offsets of the locals that are used.
lastHasPtr := false
for i, n := range fn.Dcl {
if n.Op != ONAME || n.Class() != PAUTO {
if n.Op() != ir.ONAME || n.Class() != ir.PAUTO {
continue
}
if !n.Name.Used() {
if !n.Name().Used() {
fn.Dcl = fn.Dcl[:i]
break
}
dowidth(n.Type)
w := n.Type.Width
dowidth(n.Type())
w := n.Type().Width
if w >= thearch.MAXWIDTH || w < 0 {
Fatalf("bad width")
base.Fatalf("bad width")
}
if w == 0 && lastHasPtr {
// Pad between a pointer-containing object and a zero-sized object.
@ -175,8 +176,8 @@ func (s *ssafn) AllocFrame(f *ssa.Func) {
w = 1
}
s.stksize += w
s.stksize = Rnd(s.stksize, int64(n.Type.Align))
if n.Type.HasPointers() {
s.stksize = Rnd(s.stksize, int64(n.Type().Align))
if n.Type().HasPointers() {
s.stkptrsize = s.stksize
lastHasPtr = true
} else {
@ -185,59 +186,58 @@ func (s *ssafn) AllocFrame(f *ssa.Func) {
if thearch.LinkArch.InFamily(sys.MIPS, sys.MIPS64, sys.ARM, sys.ARM64, sys.PPC64, sys.S390X) {
s.stksize = Rnd(s.stksize, int64(Widthptr))
}
n.Xoffset = -s.stksize
n.SetOffset(-s.stksize)
}
s.stksize = Rnd(s.stksize, int64(Widthreg))
s.stkptrsize = Rnd(s.stkptrsize, int64(Widthreg))
}
func funccompile(fn *Node) {
func funccompile(fn ir.Node) {
if Curfn != nil {
Fatalf("funccompile %v inside %v", fn.Func.Nname.Sym, Curfn.Func.Nname.Sym)
base.Fatalf("funccompile %v inside %v", fn.Func().Nname.Sym(), Curfn.Func().Nname.Sym())
}
if fn.Type == nil {
if nerrors == 0 {
Fatalf("funccompile missing type")
if fn.Type() == nil {
if base.Errors() == 0 {
base.Fatalf("funccompile missing type")
}
return
}
// assign parameter offsets
dowidth(fn.Type)
dowidth(fn.Type())
if fn.Nbody.Len() == 0 {
if fn.Body().Len() == 0 {
// Initialize ABI wrappers if necessary.
fn.Func.initLSym(false)
initLSym(fn.Func(), false)
emitptrargsmap(fn)
return
}
dclcontext = PAUTO
dclcontext = ir.PAUTO
Curfn = fn
compile(fn)
Curfn = nil
dclcontext = PEXTERN
dclcontext = ir.PEXTERN
}
func compile(fn *Node) {
saveerrors()
func compile(fn ir.Node) {
errorsBefore := base.Errors()
order(fn)
if nerrors != 0 {
if base.Errors() > errorsBefore {
return
}
// Set up the function's LSym early to avoid data races with the assemblers.
// Do this before walk, as walk needs the LSym to set attributes/relocations
// (e.g. in markTypeUsedInInterface).
fn.Func.initLSym(true)
initLSym(fn.Func(), true)
walk(fn)
if nerrors != 0 {
if base.Errors() > errorsBefore {
return
}
if instrumenting {
@ -247,7 +247,7 @@ func compile(fn *Node) {
// From this point, there should be no uses of Curfn. Enforce that.
Curfn = nil
if fn.funcname() == "_" {
if ir.FuncName(fn) == "_" {
// We don't need to generate code for this function, just report errors in its body.
// At this point we've generated any errors needed.
// (Beyond here we generate only non-spec errors, like "stack frame too large".)
@ -259,15 +259,15 @@ func compile(fn *Node) {
// be types of stack objects. We need to do this here
// because symbols must be allocated before the parallel
// phase of the compiler.
for _, n := range fn.Func.Dcl {
for _, n := range fn.Func().Dcl {
switch n.Class() {
case PPARAM, PPARAMOUT, PAUTO:
if livenessShouldTrack(n) && n.Name.Addrtaken() {
dtypesym(n.Type)
case ir.PPARAM, ir.PPARAMOUT, ir.PAUTO:
if livenessShouldTrack(n) && n.Name().Addrtaken() {
dtypesym(n.Type())
// Also make sure we allocate a linker symbol
// for the stack object data, for the same reason.
if fn.Func.lsym.Func().StackObjects == nil {
fn.Func.lsym.Func().StackObjects = Ctxt.Lookup(fn.Func.lsym.Name + ".stkobj")
if fn.Func().LSym.Func().StackObjects == nil {
fn.Func().LSym.Func().StackObjects = base.Ctxt.Lookup(fn.Func().LSym.Name + ".stkobj")
}
}
}
@ -284,29 +284,29 @@ func compile(fn *Node) {
// If functions are not compiled immediately,
// they are enqueued in compilequeue,
// which is drained by compileFunctions.
func compilenow(fn *Node) bool {
func compilenow(fn ir.Node) bool {
// Issue 38068: if this function is a method AND an inline
// candidate AND was not inlined (yet), put it onto the compile
// queue instead of compiling it immediately. This is in case we
// wind up inlining it into a method wrapper that is generated by
// compiling a function later on in the xtop list.
if fn.IsMethod() && isInlinableButNotInlined(fn) {
if ir.IsMethod(fn) && isInlinableButNotInlined(fn) {
return false
}
return nBackendWorkers == 1 && Debug_compilelater == 0
return base.Flag.LowerC == 1 && base.Debug.CompileLater == 0
}
// isInlinableButNotInlined returns true if 'fn' was marked as an
// inline candidate but then never inlined (presumably because we
// found no call sites).
func isInlinableButNotInlined(fn *Node) bool {
if fn.Func.Nname.Func.Inl == nil {
func isInlinableButNotInlined(fn ir.Node) bool {
if fn.Func().Nname.Func().Inl == nil {
return false
}
if fn.Sym == nil {
if fn.Sym() == nil {
return true
}
return !fn.Sym.Linksym().WasInlined()
return !fn.Sym().Linksym().WasInlined()
}
const maxStackSize = 1 << 30
@ -315,12 +315,12 @@ const maxStackSize = 1 << 30
// uses it to generate a plist,
// and flushes that plist to machine code.
// worker indicates which of the backend workers is doing the processing.
func compileSSA(fn *Node, worker int) {
func compileSSA(fn ir.Node, worker int) {
f := buildssa(fn, worker)
// Note: check arg size to fix issue 25507.
if f.Frontend().(*ssafn).stksize >= maxStackSize || fn.Type.ArgWidth() >= maxStackSize {
if f.Frontend().(*ssafn).stksize >= maxStackSize || fn.Type().ArgWidth() >= maxStackSize {
largeStackFramesMu.Lock()
largeStackFrames = append(largeStackFrames, largeStack{locals: f.Frontend().(*ssafn).stksize, args: fn.Type.ArgWidth(), pos: fn.Pos})
largeStackFrames = append(largeStackFrames, largeStack{locals: f.Frontend().(*ssafn).stksize, args: fn.Type().ArgWidth(), pos: fn.Pos()})
largeStackFramesMu.Unlock()
return
}
@ -336,14 +336,14 @@ func compileSSA(fn *Node, worker int) {
if pp.Text.To.Offset >= maxStackSize {
largeStackFramesMu.Lock()
locals := f.Frontend().(*ssafn).stksize
largeStackFrames = append(largeStackFrames, largeStack{locals: locals, args: fn.Type.ArgWidth(), callee: pp.Text.To.Offset - locals, pos: fn.Pos})
largeStackFrames = append(largeStackFrames, largeStack{locals: locals, args: fn.Type().ArgWidth(), callee: pp.Text.To.Offset - locals, pos: fn.Pos()})
largeStackFramesMu.Unlock()
return
}
pp.Flush() // assemble, fill in boilerplate, etc.
// fieldtrack must be called after pp.Flush. See issue 20014.
fieldtrack(pp.Text.From.Sym, fn.Func.FieldTrack)
fieldtrack(pp.Text.From.Sym, fn.Func().FieldTrack)
}
func init() {
@ -360,7 +360,7 @@ func compileFunctions() {
sizeCalculationDisabled = true // not safe to calculate sizes concurrently
if race.Enabled {
// Randomize compilation order to try to shake out races.
tmp := make([]*Node, len(compilequeue))
tmp := make([]ir.Node, len(compilequeue))
perm := rand.Perm(len(compilequeue))
for i, v := range perm {
tmp[v] = compilequeue[i]
@ -371,13 +371,13 @@ func compileFunctions() {
// since they're most likely to be the slowest.
// This helps avoid stragglers.
sort.Slice(compilequeue, func(i, j int) bool {
return compilequeue[i].Nbody.Len() > compilequeue[j].Nbody.Len()
return compilequeue[i].Body().Len() > compilequeue[j].Body().Len()
})
}
var wg sync.WaitGroup
Ctxt.InParallel = true
c := make(chan *Node, nBackendWorkers)
for i := 0; i < nBackendWorkers; i++ {
base.Ctxt.InParallel = true
c := make(chan ir.Node, base.Flag.LowerC)
for i := 0; i < base.Flag.LowerC; i++ {
wg.Add(1)
go func(worker int) {
for fn := range c {
@ -392,46 +392,75 @@ func compileFunctions() {
close(c)
compilequeue = nil
wg.Wait()
Ctxt.InParallel = false
base.Ctxt.InParallel = false
sizeCalculationDisabled = false
}
}
func debuginfo(fnsym *obj.LSym, infosym *obj.LSym, curfn interface{}) ([]dwarf.Scope, dwarf.InlCalls) {
fn := curfn.(*Node)
if fn.Func.Nname != nil {
if expect := fn.Func.Nname.Sym.Linksym(); fnsym != expect {
Fatalf("unexpected fnsym: %v != %v", fnsym, expect)
fn := curfn.(ir.Node)
if fn.Func().Nname != nil {
if expect := fn.Func().Nname.Sym().Linksym(); fnsym != expect {
base.Fatalf("unexpected fnsym: %v != %v", fnsym, expect)
}
}
var apdecls []*Node
// Back when there were two different *Funcs for a function, this code
// was not consistent about whether a particular *Node being processed
// was an ODCLFUNC or ONAME node. Partly this is because inlined function
// bodies have no ODCLFUNC node, which was it's own inconsistency.
// In any event, the handling of the two different nodes for DWARF purposes
// was subtly different, likely in unintended ways. CL 272253 merged the
// two nodes' Func fields, so that code sees the same *Func whether it is
// holding the ODCLFUNC or the ONAME. This resulted in changes in the
// DWARF output. To preserve the existing DWARF output and leave an
// intentional change for a future CL, this code does the following when
// fn.Op == ONAME:
//
// 1. Disallow use of createComplexVars in createDwarfVars.
// It was not possible to reach that code for an ONAME before,
// because the DebugInfo was set only on the ODCLFUNC Func.
// Calling into it in the ONAME case causes an index out of bounds panic.
//
// 2. Do not populate apdecls. fn.Func.Dcl was in the ODCLFUNC Func,
// not the ONAME Func. Populating apdecls for the ONAME case results
// in selected being populated after createSimpleVars is called in
// createDwarfVars, and then that causes the loop to skip all the entries
// in dcl, meaning that the RecordAutoType calls don't happen.
//
// These two adjustments keep toolstash -cmp working for now.
// Deciding the right answer is, as they say, future work.
isODCLFUNC := fn.Op() == ir.ODCLFUNC
var apdecls []ir.Node
// Populate decls for fn.
for _, n := range fn.Func.Dcl {
if n.Op != ONAME { // might be OTYPE or OLITERAL
if isODCLFUNC {
for _, n := range fn.Func().Dcl {
if n.Op() != ir.ONAME { // might be OTYPE or OLITERAL
continue
}
switch n.Class() {
case PAUTO:
if !n.Name.Used() {
case ir.PAUTO:
if !n.Name().Used() {
// Text == nil -> generating abstract function
if fnsym.Func().Text != nil {
Fatalf("debuginfo unused node (AllocFrame should truncate fn.Func.Dcl)")
base.Fatalf("debuginfo unused node (AllocFrame should truncate fn.Func.Dcl)")
}
continue
}
case PPARAM, PPARAMOUT:
case ir.PPARAM, ir.PPARAMOUT:
default:
continue
}
apdecls = append(apdecls, n)
fnsym.Func().RecordAutoType(ngotype(n).Linksym())
}
}
decls, dwarfVars := createDwarfVars(fnsym, fn.Func, apdecls)
decls, dwarfVars := createDwarfVars(fnsym, isODCLFUNC, fn.Func(), apdecls)
// For each type referenced by the functions auto vars but not
// already referenced by a dwarf var, attach a dummy relocation to
// already referenced by a dwarf var, attach an R_USETYPE relocation to
// the function symbol to insure that the type included in DWARF
// processing during linking.
typesyms := []*obj.LSym{}
@ -446,22 +475,22 @@ func debuginfo(fnsym *obj.LSym, infosym *obj.LSym, curfn interface{}) ([]dwarf.S
}
fnsym.Func().Autot = nil
var varScopes []ScopeID
var varScopes []ir.ScopeID
for _, decl := range decls {
pos := declPos(decl)
varScopes = append(varScopes, findScope(fn.Func.Marks, pos))
varScopes = append(varScopes, findScope(fn.Func().Marks, pos))
}
scopes := assembleScopes(fnsym, fn, dwarfVars, varScopes)
var inlcalls dwarf.InlCalls
if genDwarfInline > 0 {
if base.Flag.GenDwarfInl > 0 {
inlcalls = assembleInlines(fnsym, dwarfVars)
}
return scopes, inlcalls
}
func declPos(decl *Node) src.XPos {
if decl.Name.Defn != nil && (decl.Name.Captured() || decl.Name.Byval()) {
func declPos(decl ir.Node) src.XPos {
if decl.Name().Defn != nil && (decl.Name().Captured() || decl.Name().Byval()) {
// It's not clear which position is correct for captured variables here:
// * decl.Pos is the wrong position for captured variables, in the inner
// function, but it is the right position in the outer function.
@ -476,19 +505,19 @@ func declPos(decl *Node) src.XPos {
// case statement.
// This code is probably wrong for type switch variables that are also
// captured.
return decl.Name.Defn.Pos
return decl.Name().Defn.Pos()
}
return decl.Pos
return decl.Pos()
}
// createSimpleVars creates a DWARF entry for every variable declared in the
// function, claiming that they are permanently on the stack.
func createSimpleVars(fnsym *obj.LSym, apDecls []*Node) ([]*Node, []*dwarf.Var, map[*Node]bool) {
func createSimpleVars(fnsym *obj.LSym, apDecls []ir.Node) ([]ir.Node, []*dwarf.Var, map[ir.Node]bool) {
var vars []*dwarf.Var
var decls []*Node
selected := make(map[*Node]bool)
var decls []ir.Node
selected := make(map[ir.Node]bool)
for _, n := range apDecls {
if n.IsAutoTmp() {
if ir.IsAutoTmp(n) {
continue
}
@ -499,14 +528,14 @@ func createSimpleVars(fnsym *obj.LSym, apDecls []*Node) ([]*Node, []*dwarf.Var,
return decls, vars, selected
}
func createSimpleVar(fnsym *obj.LSym, n *Node) *dwarf.Var {
func createSimpleVar(fnsym *obj.LSym, n ir.Node) *dwarf.Var {
var abbrev int
offs := n.Xoffset
offs := n.Offset()
switch n.Class() {
case PAUTO:
case ir.PAUTO:
abbrev = dwarf.DW_ABRV_AUTO
if Ctxt.FixedFrameSize() == 0 {
if base.Ctxt.FixedFrameSize() == 0 {
offs -= int64(Widthptr)
}
if objabi.Framepointer_enabled || objabi.GOARCH == "arm64" {
@ -514,32 +543,32 @@ func createSimpleVar(fnsym *obj.LSym, n *Node) *dwarf.Var {
offs -= int64(Widthptr)
}
case PPARAM, PPARAMOUT:
case ir.PPARAM, ir.PPARAMOUT:
abbrev = dwarf.DW_ABRV_PARAM
offs += Ctxt.FixedFrameSize()
offs += base.Ctxt.FixedFrameSize()
default:
Fatalf("createSimpleVar unexpected class %v for node %v", n.Class(), n)
base.Fatalf("createSimpleVar unexpected class %v for node %v", n.Class(), n)
}
typename := dwarf.InfoPrefix + typesymname(n.Type)
typename := dwarf.InfoPrefix + typesymname(n.Type())
delete(fnsym.Func().Autot, ngotype(n).Linksym())
inlIndex := 0
if genDwarfInline > 1 {
if n.Name.InlFormal() || n.Name.InlLocal() {
inlIndex = posInlIndex(n.Pos) + 1
if n.Name.InlFormal() {
if base.Flag.GenDwarfInl > 1 {
if n.Name().InlFormal() || n.Name().InlLocal() {
inlIndex = posInlIndex(n.Pos()) + 1
if n.Name().InlFormal() {
abbrev = dwarf.DW_ABRV_PARAM
}
}
}
declpos := Ctxt.InnermostPos(declPos(n))
declpos := base.Ctxt.InnermostPos(declPos(n))
return &dwarf.Var{
Name: n.Sym.Name,
IsReturnValue: n.Class() == PPARAMOUT,
IsInlFormal: n.Name.InlFormal(),
Name: n.Sym().Name,
IsReturnValue: n.Class() == ir.PPARAMOUT,
IsInlFormal: n.Name().InlFormal(),
Abbrev: abbrev,
StackOffset: int32(offs),
Type: Ctxt.Lookup(typename),
Type: base.Ctxt.Lookup(typename),
DeclFile: declpos.RelFilename(),
DeclLine: declpos.RelLine(),
DeclCol: declpos.Col(),
@ -550,19 +579,19 @@ func createSimpleVar(fnsym *obj.LSym, n *Node) *dwarf.Var {
// createComplexVars creates recomposed DWARF vars with location lists,
// suitable for describing optimized code.
func createComplexVars(fnsym *obj.LSym, fn *Func) ([]*Node, []*dwarf.Var, map[*Node]bool) {
debugInfo := fn.DebugInfo
func createComplexVars(fnsym *obj.LSym, fn *ir.Func) ([]ir.Node, []*dwarf.Var, map[ir.Node]bool) {
debugInfo := fn.DebugInfo.(*ssa.FuncDebug)
// Produce a DWARF variable entry for each user variable.
var decls []*Node
var decls []ir.Node
var vars []*dwarf.Var
ssaVars := make(map[*Node]bool)
ssaVars := make(map[ir.Node]bool)
for varID, dvar := range debugInfo.Vars {
n := dvar.(*Node)
n := dvar
ssaVars[n] = true
for _, slot := range debugInfo.VarSlots[varID] {
ssaVars[debugInfo.Slots[slot].N.(*Node)] = true
ssaVars[debugInfo.Slots[slot].N] = true
}
if dvar := createComplexVar(fnsym, fn, ssa.VarID(varID)); dvar != nil {
@ -576,12 +605,12 @@ func createComplexVars(fnsym *obj.LSym, fn *Func) ([]*Node, []*dwarf.Var, map[*N
// createDwarfVars process fn, returning a list of DWARF variables and the
// Nodes they represent.
func createDwarfVars(fnsym *obj.LSym, fn *Func, apDecls []*Node) ([]*Node, []*dwarf.Var) {
func createDwarfVars(fnsym *obj.LSym, complexOK bool, fn *ir.Func, apDecls []ir.Node) ([]ir.Node, []*dwarf.Var) {
// Collect a raw list of DWARF vars.
var vars []*dwarf.Var
var decls []*Node
var selected map[*Node]bool
if Ctxt.Flag_locationlists && Ctxt.Flag_optimize && fn.DebugInfo != nil {
var decls []ir.Node
var selected map[ir.Node]bool
if base.Ctxt.Flag_locationlists && base.Ctxt.Flag_optimize && fn.DebugInfo != nil && complexOK {
decls, vars, selected = createComplexVars(fnsym, fn)
} else {
decls, vars, selected = createSimpleVars(fnsym, apDecls)
@ -608,11 +637,11 @@ func createDwarfVars(fnsym *obj.LSym, fn *Func, apDecls []*Node) ([]*Node, []*dw
if _, found := selected[n]; found {
continue
}
c := n.Sym.Name[0]
if c == '.' || n.Type.IsUntyped() {
c := n.Sym().Name[0]
if c == '.' || n.Type().IsUntyped() {
continue
}
if n.Class() == PPARAM && !canSSAType(n.Type) {
if n.Class() == ir.PPARAM && !canSSAType(n.Type()) {
// SSA-able args get location lists, and may move in and
// out of registers, so those are handled elsewhere.
// Autos and named output params seem to get handled
@ -624,13 +653,13 @@ func createDwarfVars(fnsym *obj.LSym, fn *Func, apDecls []*Node) ([]*Node, []*dw
decls = append(decls, n)
continue
}
typename := dwarf.InfoPrefix + typesymname(n.Type)
typename := dwarf.InfoPrefix + typesymname(n.Type())
decls = append(decls, n)
abbrev := dwarf.DW_ABRV_AUTO_LOCLIST
isReturnValue := (n.Class() == PPARAMOUT)
if n.Class() == PPARAM || n.Class() == PPARAMOUT {
isReturnValue := (n.Class() == ir.PPARAMOUT)
if n.Class() == ir.PPARAM || n.Class() == ir.PPARAMOUT {
abbrev = dwarf.DW_ABRV_PARAM_LOCLIST
} else if n.Class() == PAUTOHEAP {
} else if n.Class() == ir.PAUTOHEAP {
// If dcl in question has been promoted to heap, do a bit
// of extra work to recover original class (auto or param);
// see issue 30908. This insures that we get the proper
@ -638,28 +667,28 @@ func createDwarfVars(fnsym *obj.LSym, fn *Func, apDecls []*Node) ([]*Node, []*dw
// misleading location for the param (we want pointer-to-heap
// and not stack).
// TODO(thanm): generate a better location expression
stackcopy := n.Name.Param.Stackcopy
if stackcopy != nil && (stackcopy.Class() == PPARAM || stackcopy.Class() == PPARAMOUT) {
stackcopy := n.Name().Param.Stackcopy
if stackcopy != nil && (stackcopy.Class() == ir.PPARAM || stackcopy.Class() == ir.PPARAMOUT) {
abbrev = dwarf.DW_ABRV_PARAM_LOCLIST
isReturnValue = (stackcopy.Class() == PPARAMOUT)
isReturnValue = (stackcopy.Class() == ir.PPARAMOUT)
}
}
inlIndex := 0
if genDwarfInline > 1 {
if n.Name.InlFormal() || n.Name.InlLocal() {
inlIndex = posInlIndex(n.Pos) + 1
if n.Name.InlFormal() {
if base.Flag.GenDwarfInl > 1 {
if n.Name().InlFormal() || n.Name().InlLocal() {
inlIndex = posInlIndex(n.Pos()) + 1
if n.Name().InlFormal() {
abbrev = dwarf.DW_ABRV_PARAM_LOCLIST
}
}
}
declpos := Ctxt.InnermostPos(n.Pos)
declpos := base.Ctxt.InnermostPos(n.Pos())
vars = append(vars, &dwarf.Var{
Name: n.Sym.Name,
Name: n.Sym().Name,
IsReturnValue: isReturnValue,
Abbrev: abbrev,
StackOffset: int32(n.Xoffset),
Type: Ctxt.Lookup(typename),
StackOffset: int32(n.Offset()),
Type: base.Ctxt.Lookup(typename),
DeclFile: declpos.RelFilename(),
DeclLine: declpos.RelLine(),
DeclCol: declpos.Col(),
@ -679,14 +708,14 @@ func createDwarfVars(fnsym *obj.LSym, fn *Func, apDecls []*Node) ([]*Node, []*dw
// function that is not local to the package being compiled, then the
// names of the variables may have been "versioned" to avoid conflicts
// with local vars; disregard this versioning when sorting.
func preInliningDcls(fnsym *obj.LSym) []*Node {
fn := Ctxt.DwFixups.GetPrecursorFunc(fnsym).(*Node)
var rdcl []*Node
for _, n := range fn.Func.Inl.Dcl {
c := n.Sym.Name[0]
func preInliningDcls(fnsym *obj.LSym) []ir.Node {
fn := base.Ctxt.DwFixups.GetPrecursorFunc(fnsym).(ir.Node)
var rdcl []ir.Node
for _, n := range fn.Func().Inl.Dcl {
c := n.Sym().Name[0]
// Avoid reporting "_" parameters, since if there are more than
// one, it can result in a collision later on, as in #23179.
if unversion(n.Sym.Name) == "_" || c == '.' || n.Type.IsUntyped() {
if unversion(n.Sym().Name) == "_" || c == '.' || n.Type().IsUntyped() {
continue
}
rdcl = append(rdcl, n)
@ -698,33 +727,33 @@ func preInliningDcls(fnsym *obj.LSym) []*Node {
// stack pointer, suitable for use in a DWARF location entry. This has nothing
// to do with its offset in the user variable.
func stackOffset(slot ssa.LocalSlot) int32 {
n := slot.N.(*Node)
var base int64
n := slot.N
var off int64
switch n.Class() {
case PAUTO:
if Ctxt.FixedFrameSize() == 0 {
base -= int64(Widthptr)
case ir.PAUTO:
if base.Ctxt.FixedFrameSize() == 0 {
off -= int64(Widthptr)
}
if objabi.Framepointer_enabled || objabi.GOARCH == "arm64" {
// There is a word space for FP on ARM64 even if the frame pointer is disabled
base -= int64(Widthptr)
off -= int64(Widthptr)
}
case PPARAM, PPARAMOUT:
base += Ctxt.FixedFrameSize()
case ir.PPARAM, ir.PPARAMOUT:
off += base.Ctxt.FixedFrameSize()
}
return int32(base + n.Xoffset + slot.Off)
return int32(off + n.Offset() + slot.Off)
}
// createComplexVar builds a single DWARF variable entry and location list.
func createComplexVar(fnsym *obj.LSym, fn *Func, varID ssa.VarID) *dwarf.Var {
debug := fn.DebugInfo
n := debug.Vars[varID].(*Node)
func createComplexVar(fnsym *obj.LSym, fn *ir.Func, varID ssa.VarID) *dwarf.Var {
debug := fn.DebugInfo.(*ssa.FuncDebug)
n := debug.Vars[varID]
var abbrev int
switch n.Class() {
case PAUTO:
case ir.PAUTO:
abbrev = dwarf.DW_ABRV_AUTO_LOCLIST
case PPARAM, PPARAMOUT:
case ir.PPARAM, ir.PPARAMOUT:
abbrev = dwarf.DW_ABRV_PARAM_LOCLIST
default:
return nil
@ -734,21 +763,21 @@ func createComplexVar(fnsym *obj.LSym, fn *Func, varID ssa.VarID) *dwarf.Var {
delete(fnsym.Func().Autot, gotype)
typename := dwarf.InfoPrefix + gotype.Name[len("type."):]
inlIndex := 0
if genDwarfInline > 1 {
if n.Name.InlFormal() || n.Name.InlLocal() {
inlIndex = posInlIndex(n.Pos) + 1
if n.Name.InlFormal() {
if base.Flag.GenDwarfInl > 1 {
if n.Name().InlFormal() || n.Name().InlLocal() {
inlIndex = posInlIndex(n.Pos()) + 1
if n.Name().InlFormal() {
abbrev = dwarf.DW_ABRV_PARAM_LOCLIST
}
}
}
declpos := Ctxt.InnermostPos(n.Pos)
declpos := base.Ctxt.InnermostPos(n.Pos())
dvar := &dwarf.Var{
Name: n.Sym.Name,
IsReturnValue: n.Class() == PPARAMOUT,
IsInlFormal: n.Name.InlFormal(),
Name: n.Sym().Name,
IsReturnValue: n.Class() == ir.PPARAMOUT,
IsInlFormal: n.Name().InlFormal(),
Abbrev: abbrev,
Type: Ctxt.Lookup(typename),
Type: base.Ctxt.Lookup(typename),
// The stack offset is used as a sorting key, so for decomposed
// variables just give it the first one. It's not used otherwise.
// This won't work well if the first slot hasn't been assigned a stack
@ -763,7 +792,7 @@ func createComplexVar(fnsym *obj.LSym, fn *Func, varID ssa.VarID) *dwarf.Var {
list := debug.LocationLists[varID]
if len(list) != 0 {
dvar.PutLocationList = func(listSym, startPC dwarf.Sym) {
debug.PutLocationList(list, Ctxt, listSym.(*obj.LSym), startPC.(*obj.LSym))
debug.PutLocationList(list, base.Ctxt, listSym.(*obj.LSym), startPC.(*obj.LSym))
}
}
return dvar

170
src/cmd/compile/internal/gc/pgen_test.go
View file

@ -5,6 +5,7 @@
package gc
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"reflect"
"sort"
@ -12,129 +13,133 @@ import (
)
func typeWithoutPointers() *types.Type {
t := types.New(TSTRUCT)
f := &types.Field{Type: types.New(TINT)}
t := types.New(types.TSTRUCT)
f := &types.Field{Type: types.New(types.TINT)}
t.SetFields([]*types.Field{f})
return t
}
func typeWithPointers() *types.Type {
t := types.New(TSTRUCT)
f := &types.Field{Type: types.NewPtr(types.New(TINT))}
t := types.New(types.TSTRUCT)
f := &types.Field{Type: types.NewPtr(types.New(types.TINT))}
t.SetFields([]*types.Field{f})
return t
}
func markUsed(n *Node) *Node {
n.Name.SetUsed(true)
func markUsed(n ir.Node) ir.Node {
n.Name().SetUsed(true)
return n
}
func markNeedZero(n *Node) *Node {
n.Name.SetNeedzero(true)
func markNeedZero(n ir.Node) ir.Node {
n.Name().SetNeedzero(true)
return n
}
func nodeWithClass(n Node, c Class) *Node {
n.SetClass(c)
n.Name = new(Name)
return &n
}
// Test all code paths for cmpstackvarlt.
func TestCmpstackvar(t *testing.T) {
nod := func(xoffset int64, t *types.Type, s *types.Sym, cl ir.Class) ir.Node {
if s == nil {
s = &types.Sym{Name: "."}
}
n := NewName(s)
n.SetType(t)
n.SetOffset(xoffset)
n.SetClass(cl)
return n
}
testdata := []struct {
a, b *Node
a, b ir.Node
lt bool
}{
{
nodeWithClass(Node{}, PAUTO),
nodeWithClass(Node{}, PFUNC),
nod(0, nil, nil, ir.PAUTO),
nod(0, nil, nil, ir.PFUNC),
false,
},
{
nodeWithClass(Node{}, PFUNC),
nodeWithClass(Node{}, PAUTO),
nod(0, nil, nil, ir.PFUNC),
nod(0, nil, nil, ir.PAUTO),
true,
},
{
nodeWithClass(Node{Xoffset: 0}, PFUNC),
nodeWithClass(Node{Xoffset: 10}, PFUNC),
nod(0, nil, nil, ir.PFUNC),
nod(10, nil, nil, ir.PFUNC),
true,
},
{
nodeWithClass(Node{Xoffset: 20}, PFUNC),
nodeWithClass(Node{Xoffset: 10}, PFUNC),
nod(20, nil, nil, ir.PFUNC),
nod(10, nil, nil, ir.PFUNC),
false,
},
{
nodeWithClass(Node{Xoffset: 10}, PFUNC),
nodeWithClass(Node{Xoffset: 10}, PFUNC),
nod(10, nil, nil, ir.PFUNC),
nod(10, nil, nil, ir.PFUNC),
false,
},
{
nodeWithClass(Node{Xoffset: 10}, PPARAM),
nodeWithClass(Node{Xoffset: 20}, PPARAMOUT),
nod(10, nil, nil, ir.PPARAM),
nod(20, nil, nil, ir.PPARAMOUT),
true,
},
{
nodeWithClass(Node{Xoffset: 10}, PPARAMOUT),
nodeWithClass(Node{Xoffset: 20}, PPARAM),
nod(10, nil, nil, ir.PPARAMOUT),
nod(20, nil, nil, ir.PPARAM),
true,
},
{
markUsed(nodeWithClass(Node{}, PAUTO)),
nodeWithClass(Node{}, PAUTO),
markUsed(nod(0, nil, nil, ir.PAUTO)),
nod(0, nil, nil, ir.PAUTO),
true,
},
{
nodeWithClass(Node{}, PAUTO),
markUsed(nodeWithClass(Node{}, PAUTO)),
nod(0, nil, nil, ir.PAUTO),
markUsed(nod(0, nil, nil, ir.PAUTO)),
false,
},
{
nodeWithClass(Node{Type: typeWithoutPointers()}, PAUTO),
nodeWithClass(Node{Type: typeWithPointers()}, PAUTO),
nod(0, typeWithoutPointers(), nil, ir.PAUTO),
nod(0, typeWithPointers(), nil, ir.PAUTO),
false,
},
{
nodeWithClass(Node{Type: typeWithPointers()}, PAUTO),
nodeWithClass(Node{Type: typeWithoutPointers()}, PAUTO),
nod(0, typeWithPointers(), nil, ir.PAUTO),
nod(0, typeWithoutPointers(), nil, ir.PAUTO),
true,
},
{
markNeedZero(nodeWithClass(Node{Type: &types.Type{}}, PAUTO)),
nodeWithClass(Node{Type: &types.Type{}, Name: &Name{}}, PAUTO),
markNeedZero(nod(0, &types.Type{}, nil, ir.PAUTO)),
nod(0, &types.Type{}, nil, ir.PAUTO),
true,
},
{
nodeWithClass(Node{Type: &types.Type{}, Name: &Name{}}, PAUTO),
markNeedZero(nodeWithClass(Node{Type: &types.Type{}}, PAUTO)),
nod(0, &types.Type{}, nil, ir.PAUTO),
markNeedZero(nod(0, &types.Type{}, nil, ir.PAUTO)),
false,
},
{
nodeWithClass(Node{Type: &types.Type{Width: 1}, Name: &Name{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{Width: 2}, Name: &Name{}}, PAUTO),
nod(0, &types.Type{Width: 1}, nil, ir.PAUTO),
nod(0, &types.Type{Width: 2}, nil, ir.PAUTO),
false,
},
{
nodeWithClass(Node{Type: &types.Type{Width: 2}, Name: &Name{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{Width: 1}, Name: &Name{}}, PAUTO),
nod(0, &types.Type{Width: 2}, nil, ir.PAUTO),
nod(0, &types.Type{Width: 1}, nil, ir.PAUTO),
true,
},
{
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "xyz"}}, PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "xyz"}, ir.PAUTO),
true,
},
{
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
false,
},
{
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "xyz"}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "xyz"}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
false,
},
}
@ -151,35 +156,42 @@ func TestCmpstackvar(t *testing.T) {
}
func TestStackvarSort(t *testing.T) {
inp := []*Node{
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Xoffset: 0, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Xoffset: 10, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Xoffset: 20, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
markUsed(nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO)),
nodeWithClass(Node{Type: typeWithoutPointers(), Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO),
markNeedZero(nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO)),
nodeWithClass(Node{Type: &types.Type{Width: 1}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{Width: 2}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "xyz"}}, PAUTO),
nod := func(xoffset int64, t *types.Type, s *types.Sym, cl ir.Class) ir.Node {
n := NewName(s)
n.SetType(t)
n.SetOffset(xoffset)
n.SetClass(cl)
return n
}
want := []*Node{
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Xoffset: 0, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Xoffset: 10, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
nodeWithClass(Node{Xoffset: 20, Type: &types.Type{}, Sym: &types.Sym{}}, PFUNC),
markUsed(nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO)),
markNeedZero(nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO)),
nodeWithClass(Node{Type: &types.Type{Width: 2}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{Width: 1}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "abc"}}, PAUTO),
nodeWithClass(Node{Type: &types.Type{}, Sym: &types.Sym{Name: "xyz"}}, PAUTO),
nodeWithClass(Node{Type: typeWithoutPointers(), Sym: &types.Sym{}}, PAUTO),
inp := []ir.Node{
nod(0, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(10, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(20, &types.Type{}, &types.Sym{}, ir.PFUNC),
markUsed(nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO)),
nod(0, typeWithoutPointers(), &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO),
markNeedZero(nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO)),
nod(0, &types.Type{Width: 1}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{Width: 2}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "xyz"}, ir.PAUTO),
}
want := []ir.Node{
nod(0, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(0, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(10, &types.Type{}, &types.Sym{}, ir.PFUNC),
nod(20, &types.Type{}, &types.Sym{}, ir.PFUNC),
markUsed(nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO)),
markNeedZero(nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO)),
nod(0, &types.Type{Width: 2}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{Width: 1}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "abc"}, ir.PAUTO),
nod(0, &types.Type{}, &types.Sym{Name: "xyz"}, ir.PAUTO),
nod(0, typeWithoutPointers(), &types.Sym{}, ir.PAUTO),
}
sort.Sort(byStackVar(inp))
if !reflect.DeepEqual(want, inp) {

25
src/cmd/compile/internal/gc/phi.go
View file

@ -5,6 +5,7 @@
package gc
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
"cmd/internal/src"
@ -42,9 +43,9 @@ func (s *state) insertPhis() {
type phiState struct {
s *state // SSA state
f *ssa.Func // function to work on
defvars []map[*Node]*ssa.Value // defined variables at end of each block
defvars []map[ir.Node]*ssa.Value // defined variables at end of each block
varnum map[*Node]int32 // variable numbering
varnum map[ir.Node]int32 // variable numbering
// properties of the dominator tree
idom []*ssa.Block // dominator parents
@ -59,7 +60,7 @@ type phiState struct {
hasDef *sparseSet // has a write of the variable we're processing
// miscellaneous
placeholder *ssa.Value // dummy value to use as a "not set yet" placeholder.
placeholder *ssa.Value // value to use as a "not set yet" placeholder.
}
func (s *phiState) insertPhis() {
@ -70,15 +71,15 @@ func (s *phiState) insertPhis() {
// Find all the variables for which we need to match up reads & writes.
// This step prunes any basic-block-only variables from consideration.
// Generate a numbering for these variables.
s.varnum = map[*Node]int32{}
var vars []*Node
s.varnum = map[ir.Node]int32{}
var vars []ir.Node
var vartypes []*types.Type
for _, b := range s.f.Blocks {
for _, v := range b.Values {
if v.Op != ssa.OpFwdRef {
continue
}
var_ := v.Aux.(*Node)
var_ := v.Aux.(ir.Node)
// Optimization: look back 1 block for the definition.
if len(b.Preds) == 1 {
@ -183,7 +184,7 @@ levels:
}
}
func (s *phiState) insertVarPhis(n int, var_ *Node, defs []*ssa.Block, typ *types.Type) {
func (s *phiState) insertVarPhis(n int, var_ ir.Node, defs []*ssa.Block, typ *types.Type) {
priq := &s.priq
q := s.q
queued := s.queued
@ -318,7 +319,7 @@ func (s *phiState) resolveFwdRefs() {
if v.Op != ssa.OpFwdRef {
continue
}
n := s.varnum[v.Aux.(*Node)]
n := s.varnum[v.Aux.(ir.Node)]
v.Op = ssa.OpCopy
v.Aux = nil
v.AddArg(values[n])
@ -435,7 +436,7 @@ type simplePhiState struct {
s *state // SSA state
f *ssa.Func // function to work on
fwdrefs []*ssa.Value // list of FwdRefs to be processed
defvars []map[*Node]*ssa.Value // defined variables at end of each block
defvars []map[ir.Node]*ssa.Value // defined variables at end of each block
reachable []bool // which blocks are reachable
}
@ -449,7 +450,7 @@ func (s *simplePhiState) insertPhis() {
continue
}
s.fwdrefs = append(s.fwdrefs, v)
var_ := v.Aux.(*Node)
var_ := v.Aux.(ir.Node)
if _, ok := s.defvars[b.ID][var_]; !ok {
s.defvars[b.ID][var_] = v // treat FwdDefs as definitions.
}
@ -463,7 +464,7 @@ loop:
v := s.fwdrefs[len(s.fwdrefs)-1]
s.fwdrefs = s.fwdrefs[:len(s.fwdrefs)-1]
b := v.Block
var_ := v.Aux.(*Node)
var_ := v.Aux.(ir.Node)
if b == s.f.Entry {
// No variable should be live at entry.
s.s.Fatalf("Value live at entry. It shouldn't be. func %s, node %v, value %v", s.f.Name, var_, v)
@ -511,7 +512,7 @@ loop:
}
// lookupVarOutgoing finds the variable's value at the end of block b.
func (s *simplePhiState) lookupVarOutgoing(b *ssa.Block, t *types.Type, var_ *Node, line src.XPos) *ssa.Value {
func (s *simplePhiState) lookupVarOutgoing(b *ssa.Block, t *types.Type, var_ ir.Node, line src.XPos) *ssa.Value {
for {
if v := s.defvars[b.ID][var_]; v != nil {
return v

154
src/cmd/compile/internal/gc/plive.go
View file

@ -15,6 +15,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
"cmd/internal/obj"
@ -99,10 +101,10 @@ type BlockEffects struct {
// A collection of global state used by liveness analysis.
type Liveness struct {
fn *Node
fn ir.Node
f *ssa.Func
vars []*Node
idx map[*Node]int32
vars []ir.Node
idx map[ir.Node]int32
stkptrsize int64
be []BlockEffects
@ -204,20 +206,20 @@ type progeffectscache struct {
// nor do we care about non-local variables,
// nor do we care about empty structs (handled by the pointer check),
// nor do we care about the fake PAUTOHEAP variables.
func livenessShouldTrack(n *Node) bool {
return n.Op == ONAME && (n.Class() == PAUTO || n.Class() == PPARAM || n.Class() == PPARAMOUT) && n.Type.HasPointers()
func livenessShouldTrack(n ir.Node) bool {
return n.Op() == ir.ONAME && (n.Class() == ir.PAUTO || n.Class() == ir.PPARAM || n.Class() == ir.PPARAMOUT) && n.Type().HasPointers()
}
// getvariables returns the list of on-stack variables that we need to track
// and a map for looking up indices by *Node.
func getvariables(fn *Node) ([]*Node, map[*Node]int32) {
var vars []*Node
for _, n := range fn.Func.Dcl {
func getvariables(fn ir.Node) ([]ir.Node, map[ir.Node]int32) {
var vars []ir.Node
for _, n := range fn.Func().Dcl {
if livenessShouldTrack(n) {
vars = append(vars, n)
}
}
idx := make(map[*Node]int32, len(vars))
idx := make(map[ir.Node]int32, len(vars))
for i, n := range vars {
idx[n] = int32(i)
}
@ -226,14 +228,14 @@ func getvariables(fn *Node) ([]*Node, map[*Node]int32) {
func (lv *Liveness) initcache() {
if lv.cache.initialized {
Fatalf("liveness cache initialized twice")
base.Fatalf("liveness cache initialized twice")
return
}
lv.cache.initialized = true
for i, node := range lv.vars {
switch node.Class() {
case PPARAM:
case ir.PPARAM:
// A return instruction with a p.to is a tail return, which brings
// the stack pointer back up (if it ever went down) and then jumps
// to a new function entirely. That form of instruction must read
@ -242,7 +244,7 @@ func (lv *Liveness) initcache() {
// function runs.
lv.cache.tailuevar = append(lv.cache.tailuevar, int32(i))
case PPARAMOUT:
case ir.PPARAMOUT:
// All results are live at every return point.
// Note that this point is after escaping return values
// are copied back to the stack using their PAUTOHEAP references.
@ -270,7 +272,7 @@ const (
// If v does not affect any tracked variables, it returns -1, 0.
func (lv *Liveness) valueEffects(v *ssa.Value) (int32, liveEffect) {
n, e := affectedNode(v)
if e == 0 || n == nil || n.Op != ONAME { // cheapest checks first
if e == 0 || n == nil || n.Op() != ir.ONAME { // cheapest checks first
return -1, 0
}
@ -280,7 +282,7 @@ func (lv *Liveness) valueEffects(v *ssa.Value) (int32, liveEffect) {
// variable" ICEs (issue 19632).
switch v.Op {
case ssa.OpVarDef, ssa.OpVarKill, ssa.OpVarLive, ssa.OpKeepAlive:
if !n.Name.Used() {
if !n.Name().Used() {
return -1, 0
}
}
@ -295,7 +297,7 @@ func (lv *Liveness) valueEffects(v *ssa.Value) (int32, liveEffect) {
if e&(ssa.SymRead|ssa.SymAddr) != 0 {
effect |= uevar
}
if e&ssa.SymWrite != 0 && (!isfat(n.Type) || v.Op == ssa.OpVarDef) {
if e&ssa.SymWrite != 0 && (!isfat(n.Type()) || v.Op == ssa.OpVarDef) {
effect |= varkill
}
@ -310,7 +312,7 @@ func (lv *Liveness) valueEffects(v *ssa.Value) (int32, liveEffect) {
}
// affectedNode returns the *Node affected by v
func affectedNode(v *ssa.Value) (*Node, ssa.SymEffect) {
func affectedNode(v *ssa.Value) (ir.Node, ssa.SymEffect) {
// Special cases.
switch v.Op {
case ssa.OpLoadReg:
@ -321,9 +323,9 @@ func affectedNode(v *ssa.Value) (*Node, ssa.SymEffect) {
return n, ssa.SymWrite
case ssa.OpVarLive:
return v.Aux.(*Node), ssa.SymRead
return v.Aux.(ir.Node), ssa.SymRead
case ssa.OpVarDef, ssa.OpVarKill:
return v.Aux.(*Node), ssa.SymWrite
return v.Aux.(ir.Node), ssa.SymWrite
case ssa.OpKeepAlive:
n, _ := AutoVar(v.Args[0])
return n, ssa.SymRead
@ -338,10 +340,10 @@ func affectedNode(v *ssa.Value) (*Node, ssa.SymEffect) {
case nil, *obj.LSym:
// ok, but no node
return nil, e
case *Node:
case ir.Node:
return a, e
default:
Fatalf("weird aux: %s", v.LongString())
base.Fatalf("weird aux: %s", v.LongString())
return nil, e
}
}
@ -354,7 +356,7 @@ type livenessFuncCache struct {
// Constructs a new liveness structure used to hold the global state of the
// liveness computation. The cfg argument is a slice of *BasicBlocks and the
// vars argument is a slice of *Nodes.
func newliveness(fn *Node, f *ssa.Func, vars []*Node, idx map[*Node]int32, stkptrsize int64) *Liveness {
func newliveness(fn ir.Node, f *ssa.Func, vars []ir.Node, idx map[ir.Node]int32, stkptrsize int64) *Liveness {
lv := &Liveness{
fn: fn,
f: f,
@ -406,7 +408,7 @@ func (lv *Liveness) blockEffects(b *ssa.Block) *BlockEffects {
// on future calls with the same type t.
func onebitwalktype1(t *types.Type, off int64, bv bvec) {
if t.Align > 0 && off&int64(t.Align-1) != 0 {
Fatalf("onebitwalktype1: invalid initial alignment: type %v has alignment %d, but offset is %v", t, t.Align, off)
base.Fatalf("onebitwalktype1: invalid initial alignment: type %v has alignment %d, but offset is %v", t, t.Align, off)
}
if !t.HasPointers() {
// Note: this case ensures that pointers to go:notinheap types
@ -415,25 +417,25 @@ func onebitwalktype1(t *types.Type, off int64, bv bvec) {
}
switch t.Etype {
case TPTR, TUNSAFEPTR, TFUNC, TCHAN, TMAP:
case types.TPTR, types.TUNSAFEPTR, types.TFUNC, types.TCHAN, types.TMAP:
if off&int64(Widthptr-1) != 0 {
Fatalf("onebitwalktype1: invalid alignment, %v", t)
base.Fatalf("onebitwalktype1: invalid alignment, %v", t)
}
bv.Set(int32(off / int64(Widthptr))) // pointer
case TSTRING:
case types.TSTRING:
// struct { byte *str; intgo len; }
if off&int64(Widthptr-1) != 0 {
Fatalf("onebitwalktype1: invalid alignment, %v", t)
base.Fatalf("onebitwalktype1: invalid alignment, %v", t)
}
bv.Set(int32(off / int64(Widthptr))) //pointer in first slot
case TINTER:
case types.TINTER:
// struct { Itab *tab; void *data; }
// or, when isnilinter(t)==true:
// struct { Type *type; void *data; }
if off&int64(Widthptr-1) != 0 {
Fatalf("onebitwalktype1: invalid alignment, %v", t)
base.Fatalf("onebitwalktype1: invalid alignment, %v", t)
}
// The first word of an interface is a pointer, but we don't
// treat it as such.
@ -449,14 +451,14 @@ func onebitwalktype1(t *types.Type, off int64, bv bvec) {
// well as scan itabs to update their itab._type fields).
bv.Set(int32(off/int64(Widthptr) + 1)) // pointer in second slot
case TSLICE:
case types.TSLICE:
// struct { byte *array; uintgo len; uintgo cap; }
if off&int64(Widthptr-1) != 0 {
Fatalf("onebitwalktype1: invalid TARRAY alignment, %v", t)
base.Fatalf("onebitwalktype1: invalid TARRAY alignment, %v", t)
}
bv.Set(int32(off / int64(Widthptr))) // pointer in first slot (BitsPointer)
case TARRAY:
case types.TARRAY:
elt := t.Elem()
if elt.Width == 0 {
// Short-circuit for #20739.
@ -467,20 +469,20 @@ func onebitwalktype1(t *types.Type, off int64, bv bvec) {
off += elt.Width
}
case TSTRUCT:
case types.TSTRUCT:
for _, f := range t.Fields().Slice() {
onebitwalktype1(f.Type, off+f.Offset, bv)
}
default:
Fatalf("onebitwalktype1: unexpected type, %v", t)
base.Fatalf("onebitwalktype1: unexpected type, %v", t)
}
}
// Generates live pointer value maps for arguments and local variables. The
// this argument and the in arguments are always assumed live. The vars
// argument is a slice of *Nodes.
func (lv *Liveness) pointerMap(liveout bvec, vars []*Node, args, locals bvec) {
func (lv *Liveness) pointerMap(liveout bvec, vars []ir.Node, args, locals bvec) {
for i := int32(0); ; i++ {
i = liveout.Next(i)
if i < 0 {
@ -488,11 +490,11 @@ func (lv *Liveness) pointerMap(liveout bvec, vars []*Node, args, locals bvec) {
}
node := vars[i]
switch node.Class() {
case PAUTO:
onebitwalktype1(node.Type, node.Xoffset+lv.stkptrsize, locals)
case ir.PAUTO:
onebitwalktype1(node.Type(), node.Offset()+lv.stkptrsize, locals)
case PPARAM, PPARAMOUT:
onebitwalktype1(node.Type, node.Xoffset, args)
case ir.PPARAM, ir.PPARAMOUT:
onebitwalktype1(node.Type(), node.Offset(), args)
}
}
}
@ -509,7 +511,7 @@ func allUnsafe(f *ssa.Func) bool {
// go:nosplit functions are similar. Since safe points used to
// be coupled with stack checks, go:nosplit often actually
// means "no safe points in this function".
return compiling_runtime || f.NoSplit
return base.Flag.CompilingRuntime || f.NoSplit
}
// markUnsafePoints finds unsafe points and computes lv.unsafePoints.
@ -786,14 +788,14 @@ func (lv *Liveness) epilogue() {
// pointers to copy values back to the stack).
// TODO: if the output parameter is heap-allocated, then we
// don't need to keep the stack copy live?
if lv.fn.Func.HasDefer() {
if lv.fn.Func().HasDefer() {
for i, n := range lv.vars {
if n.Class() == PPARAMOUT {
if n.Name.IsOutputParamHeapAddr() {
if n.Class() == ir.PPARAMOUT {
if n.Name().IsOutputParamHeapAddr() {
// Just to be paranoid. Heap addresses are PAUTOs.
Fatalf("variable %v both output param and heap output param", n)
base.Fatalf("variable %v both output param and heap output param", n)
}
if n.Name.Param.Heapaddr != nil {
if n.Name().Param.Heapaddr != nil {
// If this variable moved to the heap, then
// its stack copy is not live.
continue
@ -801,22 +803,22 @@ func (lv *Liveness) epilogue() {
// Note: zeroing is handled by zeroResults in walk.go.
livedefer.Set(int32(i))
}
if n.Name.IsOutputParamHeapAddr() {
if n.Name().IsOutputParamHeapAddr() {
// This variable will be overwritten early in the function
// prologue (from the result of a mallocgc) but we need to
// zero it in case that malloc causes a stack scan.
n.Name.SetNeedzero(true)
n.Name().SetNeedzero(true)
livedefer.Set(int32(i))
}
if n.Name.OpenDeferSlot() {
if n.Name().OpenDeferSlot() {
// Open-coded defer args slots must be live
// everywhere in a function, since a panic can
// occur (almost) anywhere. Because it is live
// everywhere, it must be zeroed on entry.
livedefer.Set(int32(i))
// It was already marked as Needzero when created.
if !n.Name.Needzero() {
Fatalf("all pointer-containing defer arg slots should have Needzero set")
if !n.Name().Needzero() {
base.Fatalf("all pointer-containing defer arg slots should have Needzero set")
}
}
}
@ -878,7 +880,7 @@ func (lv *Liveness) epilogue() {
if b == lv.f.Entry {
if index != 0 {
Fatalf("bad index for entry point: %v", index)
base.Fatalf("bad index for entry point: %v", index)
}
// Check to make sure only input variables are live.
@ -886,10 +888,10 @@ func (lv *Liveness) epilogue() {
if !liveout.Get(int32(i)) {
continue
}
if n.Class() == PPARAM {
if n.Class() == ir.PPARAM {
continue // ok
}
Fatalf("bad live variable at entry of %v: %L", lv.fn.Func.Nname, n)
base.Fatalf("bad live variable at entry of %v: %L", lv.fn.Func().Nname, n)
}
// Record live variables.
@ -902,7 +904,7 @@ func (lv *Liveness) epilogue() {
}
// If we have an open-coded deferreturn call, make a liveness map for it.
if lv.fn.Func.OpenCodedDeferDisallowed() {
if lv.fn.Func().OpenCodedDeferDisallowed() {
lv.livenessMap.deferreturn = LivenessDontCare
} else {
lv.livenessMap.deferreturn = LivenessIndex{
@ -919,8 +921,8 @@ func (lv *Liveness) epilogue() {
// the only things that can possibly be live are the
// input parameters.
for j, n := range lv.vars {
if n.Class() != PPARAM && lv.stackMaps[0].Get(int32(j)) {
lv.f.Fatalf("%v %L recorded as live on entry", lv.fn.Func.Nname, n)
if n.Class() != ir.PPARAM && lv.stackMaps[0].Get(int32(j)) {
lv.f.Fatalf("%v %L recorded as live on entry", lv.fn.Func().Nname, n)
}
}
}
@ -966,7 +968,7 @@ func (lv *Liveness) compact(b *ssa.Block) {
}
func (lv *Liveness) showlive(v *ssa.Value, live bvec) {
if debuglive == 0 || lv.fn.funcname() == "init" || strings.HasPrefix(lv.fn.funcname(), ".") {
if base.Flag.Live == 0 || ir.FuncName(lv.fn) == "init" || strings.HasPrefix(ir.FuncName(lv.fn), ".") {
return
}
if !(v == nil || v.Op.IsCall()) {
@ -978,14 +980,14 @@ func (lv *Liveness) showlive(v *ssa.Value, live bvec) {
return
}
pos := lv.fn.Func.Nname.Pos
pos := lv.fn.Func().Nname.Pos()
if v != nil {
pos = v.Pos
}
s := "live at "
if v == nil {
s += fmt.Sprintf("entry to %s:", lv.fn.funcname())
s += fmt.Sprintf("entry to %s:", ir.FuncName(lv.fn))
} else if sym, ok := v.Aux.(*ssa.AuxCall); ok && sym.Fn != nil {
fn := sym.Fn.Name
if pos := strings.Index(fn, "."); pos >= 0 {
@ -1002,7 +1004,7 @@ func (lv *Liveness) showlive(v *ssa.Value, live bvec) {
}
}
Warnl(pos, s)
base.WarnfAt(pos, s)
}
func (lv *Liveness) printbvec(printed bool, name string, live bvec) bool {
@ -1022,7 +1024,7 @@ func (lv *Liveness) printbvec(printed bool, name string, live bvec) bool {
if !live.Get(int32(i)) {
continue
}
fmt.Printf("%s%s", comma, n.Sym.Name)
fmt.Printf("%s%s", comma, n.Sym().Name)
comma = ","
}
return true
@ -1040,7 +1042,7 @@ func (lv *Liveness) printeffect(printed bool, name string, pos int32, x bool) bo
}
fmt.Printf("%s=", name)
if x {
fmt.Printf("%s", lv.vars[pos].Sym.Name)
fmt.Printf("%s", lv.vars[pos].Sym().Name)
}
return true
@ -1050,7 +1052,7 @@ func (lv *Liveness) printeffect(printed bool, name string, pos int32, x bool) bo
// This format synthesizes the information used during the multiple passes
// into a single presentation.
func (lv *Liveness) printDebug() {
fmt.Printf("liveness: %s\n", lv.fn.funcname())
fmt.Printf("liveness: %s\n", ir.FuncName(lv.fn))
for i, b := range lv.f.Blocks {
if i > 0 {
@ -1088,7 +1090,7 @@ func (lv *Liveness) printDebug() {
if b == lv.f.Entry {
live := lv.stackMaps[0]
fmt.Printf("(%s) function entry\n", linestr(lv.fn.Func.Nname.Pos))
fmt.Printf("(%s) function entry\n", base.FmtPos(lv.fn.Func().Nname.Pos()))
fmt.Printf("\tlive=")
printed = false
for j, n := range lv.vars {
@ -1105,7 +1107,7 @@ func (lv *Liveness) printDebug() {
}
for _, v := range b.Values {
fmt.Printf("(%s) %v\n", linestr(v.Pos), v.LongString())
fmt.Printf("(%s) %v\n", base.FmtPos(v.Pos), v.LongString())
pcdata := lv.livenessMap.Get(v)
@ -1162,11 +1164,11 @@ func (lv *Liveness) emit() (argsSym, liveSym *obj.LSym) {
// Size args bitmaps to be just large enough to hold the largest pointer.
// First, find the largest Xoffset node we care about.
// (Nodes without pointers aren't in lv.vars; see livenessShouldTrack.)
var maxArgNode *Node
var maxArgNode ir.Node
for _, n := range lv.vars {
switch n.Class() {
case PPARAM, PPARAMOUT:
if maxArgNode == nil || n.Xoffset > maxArgNode.Xoffset {
case ir.PPARAM, ir.PPARAMOUT:
if maxArgNode == nil || n.Offset() > maxArgNode.Offset() {
maxArgNode = n
}
}
@ -1174,7 +1176,7 @@ func (lv *Liveness) emit() (argsSym, liveSym *obj.LSym) {
// Next, find the offset of the largest pointer in the largest node.
var maxArgs int64
if maxArgNode != nil {
maxArgs = maxArgNode.Xoffset + typeptrdata(maxArgNode.Type)
maxArgs = maxArgNode.Offset() + typeptrdata(maxArgNode.Type())
}
// Size locals bitmaps to be stkptrsize sized.
@ -1214,7 +1216,7 @@ func (lv *Liveness) emit() (argsSym, liveSym *obj.LSym) {
// These symbols will be added to Ctxt.Data by addGCLocals
// after parallel compilation is done.
makeSym := func(tmpSym *obj.LSym) *obj.LSym {
return Ctxt.LookupInit(fmt.Sprintf("gclocals·%x", md5.Sum(tmpSym.P)), func(lsym *obj.LSym) {
return base.Ctxt.LookupInit(fmt.Sprintf("gclocals·%x", md5.Sum(tmpSym.P)), func(lsym *obj.LSym) {
lsym.P = tmpSym.P
lsym.Set(obj.AttrContentAddressable, true)
})
@ -1235,7 +1237,7 @@ func liveness(e *ssafn, f *ssa.Func, pp *Progs) LivenessMap {
lv.prologue()
lv.solve()
lv.epilogue()
if debuglive > 0 {
if base.Flag.Live > 0 {
lv.showlive(nil, lv.stackMaps[0])
for _, b := range f.Blocks {
for _, val := range b.Values {
@ -1245,7 +1247,7 @@ func liveness(e *ssafn, f *ssa.Func, pp *Progs) LivenessMap {
}
}
}
if debuglive >= 2 {
if base.Flag.Live >= 2 {
lv.printDebug()
}
@ -1264,7 +1266,7 @@ func liveness(e *ssafn, f *ssa.Func, pp *Progs) LivenessMap {
}
// Emit the live pointer map data structures
ls := e.curfn.Func.lsym
ls := e.curfn.Func().LSym
fninfo := ls.Func()
fninfo.GCArgs, fninfo.GCLocals = lv.emit()
@ -1299,16 +1301,16 @@ func liveness(e *ssafn, f *ssa.Func, pp *Progs) LivenessMap {
func isfat(t *types.Type) bool {
if t != nil {
switch t.Etype {
case TSLICE, TSTRING,
TINTER: // maybe remove later
case types.TSLICE, types.TSTRING,
types.TINTER: // maybe remove later
return true
case TARRAY:
case types.TARRAY:
// Array of 1 element, check if element is fat
if t.NumElem() == 1 {
return isfat(t.Elem())
}
return true
case TSTRUCT:
case types.TSTRUCT:
// Struct with 1 field, check if field is fat
if t.NumFields() == 1 {
return isfat(t.Field(0).Type)

38
src/cmd/compile/internal/gc/racewalk.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
"cmd/internal/sys"
@ -47,9 +49,9 @@ var omit_pkgs = []string{
var norace_inst_pkgs = []string{"sync", "sync/atomic"}
func ispkgin(pkgs []string) bool {
if myimportpath != "" {
if base.Ctxt.Pkgpath != "" {
for _, p := range pkgs {
if myimportpath == p {
if base.Ctxt.Pkgpath == p {
return true
}
}
@ -58,22 +60,22 @@ func ispkgin(pkgs []string) bool {
return false
}
func instrument(fn *Node) {
if fn.Func.Pragma&Norace != 0 {
func instrument(fn ir.Node) {
if fn.Func().Pragma&ir.Norace != 0 {
return
}
if !flag_race || !ispkgin(norace_inst_pkgs) {
fn.Func.SetInstrumentBody(true)
if !base.Flag.Race || !ispkgin(norace_inst_pkgs) {
fn.Func().SetInstrumentBody(true)
}
if flag_race {
lno := lineno
lineno = src.NoXPos
if base.Flag.Race {
lno := base.Pos
base.Pos = src.NoXPos
if thearch.LinkArch.Arch.Family != sys.AMD64 {
fn.Func.Enter.Prepend(mkcall("racefuncenterfp", nil, nil))
fn.Func.Exit.Append(mkcall("racefuncexit", nil, nil))
fn.Func().Enter.Prepend(mkcall("racefuncenterfp", nil, nil))
fn.Func().Exit.Append(mkcall("racefuncexit", nil, nil))
} else {
// nodpc is the PC of the caller as extracted by
@ -81,13 +83,13 @@ func instrument(fn *Node) {
// This only works for amd64. This will not
// work on arm or others that might support
// race in the future.
nodpc := nodfp.copy()
nodpc.Type = types.Types[TUINTPTR]
nodpc.Xoffset = int64(-Widthptr)
fn.Func.Dcl = append(fn.Func.Dcl, nodpc)
fn.Func.Enter.Prepend(mkcall("racefuncenter", nil, nil, nodpc))
fn.Func.Exit.Append(mkcall("racefuncexit", nil, nil))
nodpc := ir.Copy(nodfp)
nodpc.SetType(types.Types[types.TUINTPTR])
nodpc.SetOffset(int64(-Widthptr))
fn.Func().Dcl = append(fn.Func().Dcl, nodpc)
fn.Func().Enter.Prepend(mkcall("racefuncenter", nil, nil, nodpc))
fn.Func().Exit.Append(mkcall("racefuncexit", nil, nil))
}
lineno = lno
base.Pos = lno
}
}

378
src/cmd/compile/internal/gc/range.go
View file

@ -5,13 +5,15 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/sys"
"unicode/utf8"
)
// range
func typecheckrange(n *Node) {
func typecheckrange(n ir.Node) {
// Typechecking order is important here:
// 0. first typecheck range expression (slice/map/chan),
// it is evaluated only once and so logically it is not part of the loop.
@ -25,7 +27,7 @@ func typecheckrange(n *Node) {
// second half of dance, the first half being typecheckrangeExpr
n.SetTypecheck(1)
ls := n.List.Slice()
ls := n.List().Slice()
for i1, n1 := range ls {
if n1.Typecheck() == 0 {
ls[i1] = typecheck(ls[i1], ctxExpr|ctxAssign)
@ -33,21 +35,21 @@ func typecheckrange(n *Node) {
}
decldepth++
typecheckslice(n.Nbody.Slice(), ctxStmt)
typecheckslice(n.Body().Slice(), ctxStmt)
decldepth--
}
func typecheckrangeExpr(n *Node) {
n.Right = typecheck(n.Right, ctxExpr)
func typecheckrangeExpr(n ir.Node) {
n.SetRight(typecheck(n.Right(), ctxExpr))
t := n.Right.Type
t := n.Right().Type()
if t == nil {
return
}
// delicate little dance. see typecheckas2
ls := n.List.Slice()
ls := n.List().Slice()
for i1, n1 := range ls {
if n1.Name == nil || n1.Name.Defn != n {
if n1.Name() == nil || n1.Name().Defn != n {
ls[i1] = typecheck(ls[i1], ctxExpr|ctxAssign)
}
}
@ -55,80 +57,80 @@ func typecheckrangeExpr(n *Node) {
if t.IsPtr() && t.Elem().IsArray() {
t = t.Elem()
}
n.Type = t
n.SetType(t)
var t1, t2 *types.Type
toomany := false
switch t.Etype {
default:
yyerrorl(n.Pos, "cannot range over %L", n.Right)
base.ErrorfAt(n.Pos(), "cannot range over %L", n.Right())
return
case TARRAY, TSLICE:
t1 = types.Types[TINT]
case types.TARRAY, types.TSLICE:
t1 = types.Types[types.TINT]
t2 = t.Elem()
case TMAP:
case types.TMAP:
t1 = t.Key()
t2 = t.Elem()
case TCHAN:
case types.TCHAN:
if !t.ChanDir().CanRecv() {
yyerrorl(n.Pos, "invalid operation: range %v (receive from send-only type %v)", n.Right, n.Right.Type)
base.ErrorfAt(n.Pos(), "invalid operation: range %v (receive from send-only type %v)", n.Right(), n.Right().Type())
return
}
t1 = t.Elem()
t2 = nil
if n.List.Len() == 2 {
if n.List().Len() == 2 {
toomany = true
}
case TSTRING:
t1 = types.Types[TINT]
case types.TSTRING:
t1 = types.Types[types.TINT]
t2 = types.Runetype
}
if n.List.Len() > 2 || toomany {
yyerrorl(n.Pos, "too many variables in range")
if n.List().Len() > 2 || toomany {
base.ErrorfAt(n.Pos(), "too many variables in range")
}
var v1, v2 *Node
if n.List.Len() != 0 {
v1 = n.List.First()
var v1, v2 ir.Node
if n.List().Len() != 0 {
v1 = n.List().First()
}
if n.List.Len() > 1 {
v2 = n.List.Second()
if n.List().Len() > 1 {
v2 = n.List().Second()
}
// this is not only an optimization but also a requirement in the spec.
// "if the second iteration variable is the blank identifier, the range
// clause is equivalent to the same clause with only the first variable
// present."
if v2.isBlank() {
if ir.IsBlank(v2) {
if v1 != nil {
n.List.Set1(v1)
n.PtrList().Set1(v1)
}
v2 = nil
}
if v1 != nil {
if v1.Name != nil && v1.Name.Defn == n {
v1.Type = t1
} else if v1.Type != nil {
if op, why := assignop(t1, v1.Type); op == OXXX {
yyerrorl(n.Pos, "cannot assign type %v to %L in range%s", t1, v1, why)
if v1.Name() != nil && v1.Name().Defn == n {
v1.SetType(t1)
} else if v1.Type() != nil {
if op, why := assignop(t1, v1.Type()); op == ir.OXXX {
base.ErrorfAt(n.Pos(), "cannot assign type %v to %L in range%s", t1, v1, why)
}
}
checkassign(n, v1)
}
if v2 != nil {
if v2.Name != nil && v2.Name.Defn == n {
v2.Type = t2
} else if v2.Type != nil {
if op, why := assignop(t2, v2.Type); op == OXXX {
yyerrorl(n.Pos, "cannot assign type %v to %L in range%s", t2, v2, why)
if v2.Name() != nil && v2.Name().Defn == n {
v2.SetType(t2)
} else if v2.Type() != nil {
if op, why := assignop(t2, v2.Type()); op == ir.OXXX {
base.ErrorfAt(n.Pos(), "cannot assign type %v to %L in range%s", t2, v2, why)
}
}
checkassign(n, v2)
@ -155,12 +157,12 @@ func cheapComputableIndex(width int64) bool {
// simpler forms. The result must be assigned back to n.
// Node n may also be modified in place, and may also be
// the returned node.
func walkrange(n *Node) *Node {
func walkrange(n ir.Node) ir.Node {
if isMapClear(n) {
m := n.Right
m := n.Right()
lno := setlineno(m)
n = mapClear(m)
lineno = lno
base.Pos = lno
return n
}
@ -171,65 +173,65 @@ func walkrange(n *Node) *Node {
// hb: hidden bool
// a, v1, v2: not hidden aggregate, val 1, 2
t := n.Type
t := n.Type()
a := n.Right
a := n.Right()
lno := setlineno(a)
n.Right = nil
n.SetRight(nil)
var v1, v2 *Node
l := n.List.Len()
var v1, v2 ir.Node
l := n.List().Len()
if l > 0 {
v1 = n.List.First()
v1 = n.List().First()
}
if l > 1 {
v2 = n.List.Second()
v2 = n.List().Second()
}
if v2.isBlank() {
if ir.IsBlank(v2) {
v2 = nil
}
if v1.isBlank() && v2 == nil {
if ir.IsBlank(v1) && v2 == nil {
v1 = nil
}
if v1 == nil && v2 != nil {
Fatalf("walkrange: v2 != nil while v1 == nil")
base.Fatalf("walkrange: v2 != nil while v1 == nil")
}
// n.List has no meaning anymore, clear it
// to avoid erroneous processing by racewalk.
n.List.Set(nil)
n.PtrList().Set(nil)
var ifGuard *Node
var ifGuard ir.Node
translatedLoopOp := OFOR
translatedLoopOp := ir.OFOR
var body []*Node
var init []*Node
var body []ir.Node
var init []ir.Node
switch t.Etype {
default:
Fatalf("walkrange")
base.Fatalf("walkrange")
case TARRAY, TSLICE:
case types.TARRAY, types.TSLICE:
if arrayClear(n, v1, v2, a) {
lineno = lno
base.Pos = lno
return n
}
// order.stmt arranged for a copy of the array/slice variable if needed.
ha := a
hv1 := temp(types.Types[TINT])
hn := temp(types.Types[TINT])
hv1 := temp(types.Types[types.TINT])
hn := temp(types.Types[types.TINT])
init = append(init, nod(OAS, hv1, nil))
init = append(init, nod(OAS, hn, nod(OLEN, ha, nil)))
init = append(init, ir.Nod(ir.OAS, hv1, nil))
init = append(init, ir.Nod(ir.OAS, hn, ir.Nod(ir.OLEN, ha, nil)))
n.Left = nod(OLT, hv1, hn)
n.Right = nod(OAS, hv1, nod(OADD, hv1, nodintconst(1)))
n.SetLeft(ir.Nod(ir.OLT, hv1, hn))
n.SetRight(ir.Nod(ir.OAS, hv1, ir.Nod(ir.OADD, hv1, nodintconst(1))))
// for range ha { body }
if v1 == nil {
@ -238,21 +240,21 @@ func walkrange(n *Node) *Node {
// for v1 := range ha { body }
if v2 == nil {
body = []*Node{nod(OAS, v1, hv1)}
body = []ir.Node{ir.Nod(ir.OAS, v1, hv1)}
break
}
// for v1, v2 := range ha { body }
if cheapComputableIndex(n.Type.Elem().Width) {
if cheapComputableIndex(n.Type().Elem().Width) {
// v1, v2 = hv1, ha[hv1]
tmp := nod(OINDEX, ha, hv1)
tmp := ir.Nod(ir.OINDEX, ha, hv1)
tmp.SetBounded(true)
// Use OAS2 to correctly handle assignments
// of the form "v1, a[v1] := range".
a := nod(OAS2, nil, nil)
a.List.Set2(v1, v2)
a.Rlist.Set2(hv1, tmp)
body = []*Node{a}
a := ir.Nod(ir.OAS2, nil, nil)
a.PtrList().Set2(v1, v2)
a.PtrRlist().Set2(hv1, tmp)
body = []ir.Node{a}
break
}
@ -268,20 +270,20 @@ func walkrange(n *Node) *Node {
// TODO(austin): OFORUNTIL inhibits bounds-check
// elimination on the index variable (see #20711).
// Enhance the prove pass to understand this.
ifGuard = nod(OIF, nil, nil)
ifGuard.Left = nod(OLT, hv1, hn)
translatedLoopOp = OFORUNTIL
ifGuard = ir.Nod(ir.OIF, nil, nil)
ifGuard.SetLeft(ir.Nod(ir.OLT, hv1, hn))
translatedLoopOp = ir.OFORUNTIL
hp := temp(types.NewPtr(n.Type.Elem()))
tmp := nod(OINDEX, ha, nodintconst(0))
hp := temp(types.NewPtr(n.Type().Elem()))
tmp := ir.Nod(ir.OINDEX, ha, nodintconst(0))
tmp.SetBounded(true)
init = append(init, nod(OAS, hp, nod(OADDR, tmp, nil)))
init = append(init, ir.Nod(ir.OAS, hp, ir.Nod(ir.OADDR, tmp, nil)))
// Use OAS2 to correctly handle assignments
// of the form "v1, a[v1] := range".
a := nod(OAS2, nil, nil)
a.List.Set2(v1, v2)
a.Rlist.Set2(hv1, nod(ODEREF, hp, nil))
a := ir.Nod(ir.OAS2, nil, nil)
a.PtrList().Set2(v1, v2)
a.PtrRlist().Set2(hv1, ir.Nod(ir.ODEREF, hp, nil))
body = append(body, a)
// Advance pointer as part of the late increment.
@ -289,76 +291,76 @@ func walkrange(n *Node) *Node {
// This runs *after* the condition check, so we know
// advancing the pointer is safe and won't go past the
// end of the allocation.
a = nod(OAS, hp, addptr(hp, t.Elem().Width))
a = ir.Nod(ir.OAS, hp, addptr(hp, t.Elem().Width))
a = typecheck(a, ctxStmt)
n.List.Set1(a)
n.PtrList().Set1(a)
case TMAP:
case types.TMAP:
// order.stmt allocated the iterator for us.
// we only use a once, so no copy needed.
ha := a
hit := prealloc[n]
th := hit.Type
n.Left = nil
th := hit.Type()
n.SetLeft(nil)
keysym := th.Field(0).Sym // depends on layout of iterator struct. See reflect.go:hiter
elemsym := th.Field(1).Sym // ditto
fn := syslook("mapiterinit")
fn = substArgTypes(fn, t.Key(), t.Elem(), th)
init = append(init, mkcall1(fn, nil, nil, typename(t), ha, nod(OADDR, hit, nil)))
n.Left = nod(ONE, nodSym(ODOT, hit, keysym), nodnil())
init = append(init, mkcall1(fn, nil, nil, typename(t), ha, ir.Nod(ir.OADDR, hit, nil)))
n.SetLeft(ir.Nod(ir.ONE, nodSym(ir.ODOT, hit, keysym), nodnil()))
fn = syslook("mapiternext")
fn = substArgTypes(fn, th)
n.Right = mkcall1(fn, nil, nil, nod(OADDR, hit, nil))
n.SetRight(mkcall1(fn, nil, nil, ir.Nod(ir.OADDR, hit, nil)))
key := nodSym(ODOT, hit, keysym)
key = nod(ODEREF, key, nil)
key := nodSym(ir.ODOT, hit, keysym)
key = ir.Nod(ir.ODEREF, key, nil)
if v1 == nil {
body = nil
} else if v2 == nil {
body = []*Node{nod(OAS, v1, key)}
body = []ir.Node{ir.Nod(ir.OAS, v1, key)}
} else {
elem := nodSym(ODOT, hit, elemsym)
elem = nod(ODEREF, elem, nil)
a := nod(OAS2, nil, nil)
a.List.Set2(v1, v2)
a.Rlist.Set2(key, elem)
body = []*Node{a}
elem := nodSym(ir.ODOT, hit, elemsym)
elem = ir.Nod(ir.ODEREF, elem, nil)
a := ir.Nod(ir.OAS2, nil, nil)
a.PtrList().Set2(v1, v2)
a.PtrRlist().Set2(key, elem)
body = []ir.Node{a}
}
case TCHAN:
case types.TCHAN:
// order.stmt arranged for a copy of the channel variable.
ha := a
n.Left = nil
n.SetLeft(nil)
hv1 := temp(t.Elem())
hv1.SetTypecheck(1)
if t.Elem().HasPointers() {
init = append(init, nod(OAS, hv1, nil))
init = append(init, ir.Nod(ir.OAS, hv1, nil))
}
hb := temp(types.Types[TBOOL])
hb := temp(types.Types[types.TBOOL])
n.Left = nod(ONE, hb, nodbool(false))
a := nod(OAS2RECV, nil, nil)
n.SetLeft(ir.Nod(ir.ONE, hb, nodbool(false)))
a := ir.Nod(ir.OAS2RECV, nil, nil)
a.SetTypecheck(1)
a.List.Set2(hv1, hb)
a.Right = nod(ORECV, ha, nil)
n.Left.Ninit.Set1(a)
a.PtrList().Set2(hv1, hb)
a.SetRight(ir.Nod(ir.ORECV, ha, nil))
n.Left().PtrInit().Set1(a)
if v1 == nil {
body = nil
} else {
body = []*Node{nod(OAS, v1, hv1)}
body = []ir.Node{ir.Nod(ir.OAS, v1, hv1)}
}
// Zero hv1. This prevents hv1 from being the sole, inaccessible
// reference to an otherwise GC-able value during the next channel receive.
// See issue 15281.
body = append(body, nod(OAS, hv1, nil))
body = append(body, ir.Nod(ir.OAS, hv1, nil))
case TSTRING:
case types.TSTRING:
// Transform string range statements like "for v1, v2 = range a" into
//
// ha := a
@ -377,84 +379,84 @@ func walkrange(n *Node) *Node {
// order.stmt arranged for a copy of the string variable.
ha := a
hv1 := temp(types.Types[TINT])
hv1t := temp(types.Types[TINT])
hv1 := temp(types.Types[types.TINT])
hv1t := temp(types.Types[types.TINT])
hv2 := temp(types.Runetype)
// hv1 := 0
init = append(init, nod(OAS, hv1, nil))
init = append(init, ir.Nod(ir.OAS, hv1, nil))
// hv1 < len(ha)
n.Left = nod(OLT, hv1, nod(OLEN, ha, nil))
n.SetLeft(ir.Nod(ir.OLT, hv1, ir.Nod(ir.OLEN, ha, nil)))
if v1 != nil {
// hv1t = hv1
body = append(body, nod(OAS, hv1t, hv1))
body = append(body, ir.Nod(ir.OAS, hv1t, hv1))
}
// hv2 := rune(ha[hv1])
nind := nod(OINDEX, ha, hv1)
nind := ir.Nod(ir.OINDEX, ha, hv1)
nind.SetBounded(true)
body = append(body, nod(OAS, hv2, conv(nind, types.Runetype)))
body = append(body, ir.Nod(ir.OAS, hv2, conv(nind, types.Runetype)))
// if hv2 < utf8.RuneSelf
nif := nod(OIF, nil, nil)
nif.Left = nod(OLT, hv2, nodintconst(utf8.RuneSelf))
nif := ir.Nod(ir.OIF, nil, nil)
nif.SetLeft(ir.Nod(ir.OLT, hv2, nodintconst(utf8.RuneSelf)))
// hv1++
nif.Nbody.Set1(nod(OAS, hv1, nod(OADD, hv1, nodintconst(1))))
nif.PtrBody().Set1(ir.Nod(ir.OAS, hv1, ir.Nod(ir.OADD, hv1, nodintconst(1))))
// } else {
eif := nod(OAS2, nil, nil)
nif.Rlist.Set1(eif)
eif := ir.Nod(ir.OAS2, nil, nil)
nif.PtrRlist().Set1(eif)
// hv2, hv1 = decoderune(ha, hv1)
eif.List.Set2(hv2, hv1)
eif.PtrList().Set2(hv2, hv1)
fn := syslook("decoderune")
eif.Rlist.Set1(mkcall1(fn, fn.Type.Results(), nil, ha, hv1))
eif.PtrRlist().Set1(mkcall1(fn, fn.Type().Results(), nil, ha, hv1))
body = append(body, nif)
if v1 != nil {
if v2 != nil {
// v1, v2 = hv1t, hv2
a := nod(OAS2, nil, nil)
a.List.Set2(v1, v2)
a.Rlist.Set2(hv1t, hv2)
a := ir.Nod(ir.OAS2, nil, nil)
a.PtrList().Set2(v1, v2)
a.PtrRlist().Set2(hv1t, hv2)
body = append(body, a)
} else {
// v1 = hv1t
body = append(body, nod(OAS, v1, hv1t))
body = append(body, ir.Nod(ir.OAS, v1, hv1t))
}
}
}
n.Op = translatedLoopOp
n.SetOp(translatedLoopOp)
typecheckslice(init, ctxStmt)
if ifGuard != nil {
ifGuard.Ninit.Append(init...)
ifGuard.PtrInit().Append(init...)
ifGuard = typecheck(ifGuard, ctxStmt)
} else {
n.Ninit.Append(init...)
n.PtrInit().Append(init...)
}
typecheckslice(n.Left.Ninit.Slice(), ctxStmt)
typecheckslice(n.Left().Init().Slice(), ctxStmt)
n.Left = typecheck(n.Left, ctxExpr)
n.Left = defaultlit(n.Left, nil)
n.Right = typecheck(n.Right, ctxStmt)
n.SetLeft(typecheck(n.Left(), ctxExpr))
n.SetLeft(defaultlit(n.Left(), nil))
n.SetRight(typecheck(n.Right(), ctxStmt))
typecheckslice(body, ctxStmt)
n.Nbody.Prepend(body...)
n.PtrBody().Prepend(body...)
if ifGuard != nil {
ifGuard.Nbody.Set1(n)
ifGuard.PtrBody().Set1(n)
n = ifGuard
}
n = walkstmt(n)
lineno = lno
base.Pos = lno
return n
}
@ -465,41 +467,41 @@ func walkrange(n *Node) *Node {
// }
//
// where == for keys of map m is reflexive.
func isMapClear(n *Node) bool {
if Debug.N != 0 || instrumenting {
func isMapClear(n ir.Node) bool {
if base.Flag.N != 0 || instrumenting {
return false
}
if n.Op != ORANGE || n.Type.Etype != TMAP || n.List.Len() != 1 {
if n.Op() != ir.ORANGE || n.Type().Etype != types.TMAP || n.List().Len() != 1 {
return false
}
k := n.List.First()
if k == nil || k.isBlank() {
k := n.List().First()
if k == nil || ir.IsBlank(k) {
return false
}
// Require k to be a new variable name.
if k.Name == nil || k.Name.Defn != n {
if k.Name() == nil || k.Name().Defn != n {
return false
}
if n.Nbody.Len() != 1 {
if n.Body().Len() != 1 {
return false
}
stmt := n.Nbody.First() // only stmt in body
if stmt == nil || stmt.Op != ODELETE {
stmt := n.Body().First() // only stmt in body
if stmt == nil || stmt.Op() != ir.ODELETE {
return false
}
m := n.Right
if !samesafeexpr(stmt.List.First(), m) || !samesafeexpr(stmt.List.Second(), k) {
m := n.Right()
if !samesafeexpr(stmt.List().First(), m) || !samesafeexpr(stmt.List().Second(), k) {
return false
}
// Keys where equality is not reflexive can not be deleted from maps.
if !isreflexive(m.Type.Key()) {
if !isreflexive(m.Type().Key()) {
return false
}
@ -507,8 +509,8 @@ func isMapClear(n *Node) bool {
}
// mapClear constructs a call to runtime.mapclear for the map m.
func mapClear(m *Node) *Node {
t := m.Type
func mapClear(m ir.Node) ir.Node {
t := m.Type()
// instantiate mapclear(typ *type, hmap map[any]any)
fn := syslook("mapclear")
@ -532,8 +534,8 @@ func mapClear(m *Node) *Node {
// in which the evaluation of a is side-effect-free.
//
// Parameters are as in walkrange: "for v1, v2 = range a".
func arrayClear(n, v1, v2, a *Node) bool {
if Debug.N != 0 || instrumenting {
func arrayClear(n, v1, v2, a ir.Node) bool {
if base.Flag.N != 0 || instrumenting {
return false
}
@ -541,21 +543,21 @@ func arrayClear(n, v1, v2, a *Node) bool {
return false
}
if n.Nbody.Len() != 1 || n.Nbody.First() == nil {
if n.Body().Len() != 1 || n.Body().First() == nil {
return false
}
stmt := n.Nbody.First() // only stmt in body
if stmt.Op != OAS || stmt.Left.Op != OINDEX {
stmt := n.Body().First() // only stmt in body
if stmt.Op() != ir.OAS || stmt.Left().Op() != ir.OINDEX {
return false
}
if !samesafeexpr(stmt.Left.Left, a) || !samesafeexpr(stmt.Left.Right, v1) {
if !samesafeexpr(stmt.Left().Left(), a) || !samesafeexpr(stmt.Left().Right(), v1) {
return false
}
elemsize := n.Type.Elem().Width
if elemsize <= 0 || !isZero(stmt.Right) {
elemsize := n.Type().Elem().Width
if elemsize <= 0 || !isZero(stmt.Right()) {
return false
}
@ -566,63 +568,63 @@ func arrayClear(n, v1, v2, a *Node) bool {
// memclr{NoHeap,Has}Pointers(hp, hn)
// i = len(a) - 1
// }
n.Op = OIF
n.SetOp(ir.OIF)
n.Nbody.Set(nil)
n.Left = nod(ONE, nod(OLEN, a, nil), nodintconst(0))
n.PtrBody().Set(nil)
n.SetLeft(ir.Nod(ir.ONE, ir.Nod(ir.OLEN, a, nil), nodintconst(0)))
// hp = &a[0]
hp := temp(types.Types[TUNSAFEPTR])
hp := temp(types.Types[types.TUNSAFEPTR])
tmp := nod(OINDEX, a, nodintconst(0))
tmp := ir.Nod(ir.OINDEX, a, nodintconst(0))
tmp.SetBounded(true)
tmp = nod(OADDR, tmp, nil)
tmp = convnop(tmp, types.Types[TUNSAFEPTR])
n.Nbody.Append(nod(OAS, hp, tmp))
tmp = ir.Nod(ir.OADDR, tmp, nil)
tmp = convnop(tmp, types.Types[types.TUNSAFEPTR])
n.PtrBody().Append(ir.Nod(ir.OAS, hp, tmp))
// hn = len(a) * sizeof(elem(a))
hn := temp(types.Types[TUINTPTR])
hn := temp(types.Types[types.TUINTPTR])
tmp = nod(OLEN, a, nil)
tmp = nod(OMUL, tmp, nodintconst(elemsize))
tmp = conv(tmp, types.Types[TUINTPTR])
n.Nbody.Append(nod(OAS, hn, tmp))
tmp = ir.Nod(ir.OLEN, a, nil)
tmp = ir.Nod(ir.OMUL, tmp, nodintconst(elemsize))
tmp = conv(tmp, types.Types[types.TUINTPTR])
n.PtrBody().Append(ir.Nod(ir.OAS, hn, tmp))
var fn *Node
if a.Type.Elem().HasPointers() {
var fn ir.Node
if a.Type().Elem().HasPointers() {
// memclrHasPointers(hp, hn)
Curfn.Func.setWBPos(stmt.Pos)
Curfn.Func().SetWBPos(stmt.Pos())
fn = mkcall("memclrHasPointers", nil, nil, hp, hn)
} else {
// memclrNoHeapPointers(hp, hn)
fn = mkcall("memclrNoHeapPointers", nil, nil, hp, hn)
}
n.Nbody.Append(fn)
n.PtrBody().Append(fn)
// i = len(a) - 1
v1 = nod(OAS, v1, nod(OSUB, nod(OLEN, a, nil), nodintconst(1)))
v1 = ir.Nod(ir.OAS, v1, ir.Nod(ir.OSUB, ir.Nod(ir.OLEN, a, nil), nodintconst(1)))
n.Nbody.Append(v1)
n.PtrBody().Append(v1)
n.Left = typecheck(n.Left, ctxExpr)
n.Left = defaultlit(n.Left, nil)
typecheckslice(n.Nbody.Slice(), ctxStmt)
n.SetLeft(typecheck(n.Left(), ctxExpr))
n.SetLeft(defaultlit(n.Left(), nil))
typecheckslice(n.Body().Slice(), ctxStmt)
n = walkstmt(n)
return true
}
// addptr returns (*T)(uintptr(p) + n).
func addptr(p *Node, n int64) *Node {
t := p.Type
func addptr(p ir.Node, n int64) ir.Node {
t := p.Type()
p = nod(OCONVNOP, p, nil)
p.Type = types.Types[TUINTPTR]
p = ir.Nod(ir.OCONVNOP, p, nil)
p.SetType(types.Types[types.TUINTPTR])
p = nod(OADD, p, nodintconst(n))
p = ir.Nod(ir.OADD, p, nodintconst(n))
p = nod(OCONVNOP, p, nil)
p.Type = t
p = ir.Nod(ir.OCONVNOP, p, nil)
p.SetType(t)
return p
}

456
src/cmd/compile/internal/gc/reflect.go
View file

File diff suppressed because it is too large Load diff

60
src/cmd/compile/internal/gc/scc.go
View file

@ -4,6 +4,8 @@
package gc
import "cmd/compile/internal/ir"
// Strongly connected components.
//
// Run analysis on minimal sets of mutually recursive functions
@ -30,10 +32,10 @@ package gc
// when analyzing a set of mutually recursive functions.
type bottomUpVisitor struct {
analyze func([]*Node, bool)
analyze func([]ir.Node, bool)
visitgen uint32
nodeID map[*Node]uint32
stack []*Node
nodeID map[ir.Node]uint32
stack []ir.Node
}
// visitBottomUp invokes analyze on the ODCLFUNC nodes listed in list.
@ -49,18 +51,18 @@ type bottomUpVisitor struct {
// If recursive is false, the list consists of only a single function and its closures.
// If recursive is true, the list may still contain only a single function,
// if that function is itself recursive.
func visitBottomUp(list []*Node, analyze func(list []*Node, recursive bool)) {
func visitBottomUp(list []ir.Node, analyze func(list []ir.Node, recursive bool)) {
var v bottomUpVisitor
v.analyze = analyze
v.nodeID = make(map[*Node]uint32)
v.nodeID = make(map[ir.Node]uint32)
for _, n := range list {
if n.Op == ODCLFUNC && !n.Func.IsHiddenClosure() {
if n.Op() == ir.ODCLFUNC && !n.Func().IsHiddenClosure() {
v.visit(n)
}
}
}
func (v *bottomUpVisitor) visit(n *Node) uint32 {
func (v *bottomUpVisitor) visit(n ir.Node) uint32 {
if id := v.nodeID[n]; id > 0 {
// already visited
return id
@ -73,42 +75,46 @@ func (v *bottomUpVisitor) visit(n *Node) uint32 {
min := v.visitgen
v.stack = append(v.stack, n)
inspectList(n.Nbody, func(n *Node) bool {
switch n.Op {
case ONAME:
if n.Class() == PFUNC {
if n.isMethodExpression() {
n = asNode(n.Type.Nname())
}
if n != nil && n.Name.Defn != nil {
if m := v.visit(n.Name.Defn); m < min {
ir.InspectList(n.Body(), func(n ir.Node) bool {
switch n.Op() {
case ir.ONAME:
if n.Class() == ir.PFUNC {
if n != nil && n.Name().Defn != nil {
if m := v.visit(n.Name().Defn); m < min {
min = m
}
}
}
case ODOTMETH:
fn := asNode(n.Type.Nname())
if fn != nil && fn.Op == ONAME && fn.Class() == PFUNC && fn.Name.Defn != nil {
if m := v.visit(fn.Name.Defn); m < min {
case ir.OMETHEXPR:
fn := methodExprName(n)
if fn != nil && fn.Name().Defn != nil {
if m := v.visit(fn.Name().Defn); m < min {
min = m
}
}
case OCALLPART:
fn := asNode(callpartMethod(n).Type.Nname())
if fn != nil && fn.Op == ONAME && fn.Class() == PFUNC && fn.Name.Defn != nil {
if m := v.visit(fn.Name.Defn); m < min {
case ir.ODOTMETH:
fn := methodExprName(n)
if fn != nil && fn.Op() == ir.ONAME && fn.Class() == ir.PFUNC && fn.Name().Defn != nil {
if m := v.visit(fn.Name().Defn); m < min {
min = m
}
}
case OCLOSURE:
if m := v.visit(n.Func.Closure); m < min {
case ir.OCALLPART:
fn := ir.AsNode(callpartMethod(n).Nname)
if fn != nil && fn.Op() == ir.ONAME && fn.Class() == ir.PFUNC && fn.Name().Defn != nil {
if m := v.visit(fn.Name().Defn); m < min {
min = m
}
}
case ir.OCLOSURE:
if m := v.visit(n.Func().Decl); m < min {
min = m
}
}
return true
})
if (min == id || min == id+1) && !n.Func.IsHiddenClosure() {
if (min == id || min == id+1) && !n.Func().IsHiddenClosure() {
// This node is the root of a strongly connected component.
// The original min passed to visitcodelist was v.nodeID[n]+1.

20
src/cmd/compile/internal/gc/scope.go
View file

@ -5,6 +5,8 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/internal/dwarf"
"cmd/internal/obj"
"cmd/internal/src"
@ -13,10 +15,10 @@ import (
// See golang.org/issue/20390.
func xposBefore(p, q src.XPos) bool {
return Ctxt.PosTable.Pos(p).Before(Ctxt.PosTable.Pos(q))
return base.Ctxt.PosTable.Pos(p).Before(base.Ctxt.PosTable.Pos(q))
}
func findScope(marks []Mark, pos src.XPos) ScopeID {
func findScope(marks []ir.Mark, pos src.XPos) ir.ScopeID {
i := sort.Search(len(marks), func(i int) bool {
return xposBefore(pos, marks[i].Pos)
})
@ -26,20 +28,20 @@ func findScope(marks []Mark, pos src.XPos) ScopeID {
return marks[i-1].Scope
}
func assembleScopes(fnsym *obj.LSym, fn *Node, dwarfVars []*dwarf.Var, varScopes []ScopeID) []dwarf.Scope {
func assembleScopes(fnsym *obj.LSym, fn ir.Node, dwarfVars []*dwarf.Var, varScopes []ir.ScopeID) []dwarf.Scope {
// Initialize the DWARF scope tree based on lexical scopes.
dwarfScopes := make([]dwarf.Scope, 1+len(fn.Func.Parents))
for i, parent := range fn.Func.Parents {
dwarfScopes := make([]dwarf.Scope, 1+len(fn.Func().Parents))
for i, parent := range fn.Func().Parents {
dwarfScopes[i+1].Parent = int32(parent)
}
scopeVariables(dwarfVars, varScopes, dwarfScopes)
scopePCs(fnsym, fn.Func.Marks, dwarfScopes)
scopePCs(fnsym, fn.Func().Marks, dwarfScopes)
return compactScopes(dwarfScopes)
}
// scopeVariables assigns DWARF variable records to their scopes.
func scopeVariables(dwarfVars []*dwarf.Var, varScopes []ScopeID, dwarfScopes []dwarf.Scope) {
func scopeVariables(dwarfVars []*dwarf.Var, varScopes []ir.ScopeID, dwarfScopes []dwarf.Scope) {
sort.Stable(varsByScopeAndOffset{dwarfVars, varScopes})
i0 := 0
@ -56,7 +58,7 @@ func scopeVariables(dwarfVars []*dwarf.Var, varScopes []ScopeID, dwarfScopes []d
}
// scopePCs assigns PC ranges to their scopes.
func scopePCs(fnsym *obj.LSym, marks []Mark, dwarfScopes []dwarf.Scope) {
func scopePCs(fnsym *obj.LSym, marks []ir.Mark, dwarfScopes []dwarf.Scope) {
// If there aren't any child scopes (in particular, when scope
// tracking is disabled), we can skip a whole lot of work.
if len(marks) == 0 {
@ -89,7 +91,7 @@ func compactScopes(dwarfScopes []dwarf.Scope) []dwarf.Scope {
type varsByScopeAndOffset struct {
vars []*dwarf.Var
scopes []ScopeID
scopes []ir.ScopeID
}
func (v varsByScopeAndOffset) Len() int {

324
src/cmd/compile/internal/gc/select.go
View file

@ -4,152 +4,156 @@
package gc
import "cmd/compile/internal/types"
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
)
// select
func typecheckselect(sel *Node) {
var def *Node
func typecheckselect(sel ir.Node) {
var def ir.Node
lno := setlineno(sel)
typecheckslice(sel.Ninit.Slice(), ctxStmt)
for _, ncase := range sel.List.Slice() {
if ncase.Op != OCASE {
typecheckslice(sel.Init().Slice(), ctxStmt)
for _, ncase := range sel.List().Slice() {
if ncase.Op() != ir.OCASE {
setlineno(ncase)
Fatalf("typecheckselect %v", ncase.Op)
base.Fatalf("typecheckselect %v", ncase.Op())
}
if ncase.List.Len() == 0 {
if ncase.List().Len() == 0 {
// default
if def != nil {
yyerrorl(ncase.Pos, "multiple defaults in select (first at %v)", def.Line())
base.ErrorfAt(ncase.Pos(), "multiple defaults in select (first at %v)", ir.Line(def))
} else {
def = ncase
}
} else if ncase.List.Len() > 1 {
yyerrorl(ncase.Pos, "select cases cannot be lists")
} else if ncase.List().Len() > 1 {
base.ErrorfAt(ncase.Pos(), "select cases cannot be lists")
} else {
ncase.List.SetFirst(typecheck(ncase.List.First(), ctxStmt))
n := ncase.List.First()
ncase.Left = n
ncase.List.Set(nil)
switch n.Op {
ncase.List().SetFirst(typecheck(ncase.List().First(), ctxStmt))
n := ncase.List().First()
ncase.SetLeft(n)
ncase.PtrList().Set(nil)
switch n.Op() {
default:
pos := n.Pos
if n.Op == ONAME {
pos := n.Pos()
if n.Op() == ir.ONAME {
// We don't have the right position for ONAME nodes (see #15459 and
// others). Using ncase.Pos for now as it will provide the correct
// line number (assuming the expression follows the "case" keyword
// on the same line). This matches the approach before 1.10.
pos = ncase.Pos
pos = ncase.Pos()
}
yyerrorl(pos, "select case must be receive, send or assign recv")
base.ErrorfAt(pos, "select case must be receive, send or assign recv")
// convert x = <-c into OSELRECV(x, <-c).
// remove implicit conversions; the eventual assignment
// will reintroduce them.
case OAS:
if (n.Right.Op == OCONVNOP || n.Right.Op == OCONVIFACE) && n.Right.Implicit() {
n.Right = n.Right.Left
case ir.OAS:
if (n.Right().Op() == ir.OCONVNOP || n.Right().Op() == ir.OCONVIFACE) && n.Right().Implicit() {
n.SetRight(n.Right().Left())
}
if n.Right.Op != ORECV {
yyerrorl(n.Pos, "select assignment must have receive on right hand side")
if n.Right().Op() != ir.ORECV {
base.ErrorfAt(n.Pos(), "select assignment must have receive on right hand side")
break
}
n.Op = OSELRECV
n.SetOp(ir.OSELRECV)
// convert x, ok = <-c into OSELRECV2(x, <-c) with ntest=ok
case OAS2RECV:
if n.Right.Op != ORECV {
yyerrorl(n.Pos, "select assignment must have receive on right hand side")
case ir.OAS2RECV:
if n.Right().Op() != ir.ORECV {
base.ErrorfAt(n.Pos(), "select assignment must have receive on right hand side")
break
}
n.Op = OSELRECV2
n.Left = n.List.First()
n.List.Set1(n.List.Second())
n.SetOp(ir.OSELRECV2)
n.SetLeft(n.List().First())
n.PtrList().Set1(n.List().Second())
// convert <-c into OSELRECV(N, <-c)
case ORECV:
n = nodl(n.Pos, OSELRECV, nil, n)
case ir.ORECV:
n = ir.NodAt(n.Pos(), ir.OSELRECV, nil, n)
n.SetTypecheck(1)
ncase.Left = n
ncase.SetLeft(n)
case OSEND:
case ir.OSEND:
break
}
}
typecheckslice(ncase.Nbody.Slice(), ctxStmt)
typecheckslice(ncase.Body().Slice(), ctxStmt)
}
lineno = lno
base.Pos = lno
}
func walkselect(sel *Node) {
func walkselect(sel ir.Node) {
lno := setlineno(sel)
if sel.Nbody.Len() != 0 {
Fatalf("double walkselect")
if sel.Body().Len() != 0 {
base.Fatalf("double walkselect")
}
init := sel.Ninit.Slice()
sel.Ninit.Set(nil)
init := sel.Init().Slice()
sel.PtrInit().Set(nil)
init = append(init, walkselectcases(&sel.List)...)
sel.List.Set(nil)
init = append(init, walkselectcases(sel.PtrList())...)
sel.PtrList().Set(nil)
sel.Nbody.Set(init)
walkstmtlist(sel.Nbody.Slice())
sel.PtrBody().Set(init)
walkstmtlist(sel.Body().Slice())
lineno = lno
base.Pos = lno
}
func walkselectcases(cases *Nodes) []*Node {
func walkselectcases(cases *ir.Nodes) []ir.Node {
ncas := cases.Len()
sellineno := lineno
sellineno := base.Pos
// optimization: zero-case select
if ncas == 0 {
return []*Node{mkcall("block", nil, nil)}
return []ir.Node{mkcall("block", nil, nil)}
}
// optimization: one-case select: single op.
if ncas == 1 {
cas := cases.First()
setlineno(cas)
l := cas.Ninit.Slice()
if cas.Left != nil { // not default:
n := cas.Left
l = append(l, n.Ninit.Slice()...)
n.Ninit.Set(nil)
switch n.Op {
l := cas.Init().Slice()
if cas.Left() != nil { // not default:
n := cas.Left()
l = append(l, n.Init().Slice()...)
n.PtrInit().Set(nil)
switch n.Op() {
default:
Fatalf("select %v", n.Op)
base.Fatalf("select %v", n.Op())
case OSEND:
case ir.OSEND:
// already ok
case OSELRECV, OSELRECV2:
if n.Op == OSELRECV || n.List.Len() == 0 {
if n.Left == nil {
n = n.Right
case ir.OSELRECV, ir.OSELRECV2:
if n.Op() == ir.OSELRECV || n.List().Len() == 0 {
if n.Left() == nil {
n = n.Right()
} else {
n.Op = OAS
n.SetOp(ir.OAS)
}
break
}
if n.Left == nil {
nblank = typecheck(nblank, ctxExpr|ctxAssign)
n.Left = nblank
if n.Left() == nil {
ir.BlankNode = typecheck(ir.BlankNode, ctxExpr|ctxAssign)
n.SetLeft(ir.BlankNode)
}
n.Op = OAS2
n.List.Prepend(n.Left)
n.Rlist.Set1(n.Right)
n.Right = nil
n.Left = nil
n.SetOp(ir.OAS2)
n.PtrList().Prepend(n.Left())
n.PtrRlist().Set1(n.Right())
n.SetRight(nil)
n.SetLeft(nil)
n.SetTypecheck(0)
n = typecheck(n, ctxStmt)
}
@ -157,34 +161,34 @@ func walkselectcases(cases *Nodes) []*Node {
l = append(l, n)
}
l = append(l, cas.Nbody.Slice()...)
l = append(l, nod(OBREAK, nil, nil))
l = append(l, cas.Body().Slice()...)
l = append(l, ir.Nod(ir.OBREAK, nil, nil))
return l
}
// convert case value arguments to addresses.
// this rewrite is used by both the general code and the next optimization.
var dflt *Node
var dflt ir.Node
for _, cas := range cases.Slice() {
setlineno(cas)
n := cas.Left
n := cas.Left()
if n == nil {
dflt = cas
continue
}
switch n.Op {
case OSEND:
n.Right = nod(OADDR, n.Right, nil)
n.Right = typecheck(n.Right, ctxExpr)
switch n.Op() {
case ir.OSEND:
n.SetRight(ir.Nod(ir.OADDR, n.Right(), nil))
n.SetRight(typecheck(n.Right(), ctxExpr))
case OSELRECV, OSELRECV2:
if n.Op == OSELRECV2 && n.List.Len() == 0 {
n.Op = OSELRECV
case ir.OSELRECV, ir.OSELRECV2:
if n.Op() == ir.OSELRECV2 && n.List().Len() == 0 {
n.SetOp(ir.OSELRECV)
}
if n.Left != nil {
n.Left = nod(OADDR, n.Left, nil)
n.Left = typecheck(n.Left, ctxExpr)
if n.Left() != nil {
n.SetLeft(ir.Nod(ir.OADDR, n.Left(), nil))
n.SetLeft(typecheck(n.Left(), ctxExpr))
}
}
}
@ -196,68 +200,68 @@ func walkselectcases(cases *Nodes) []*Node {
cas = cases.Second()
}
n := cas.Left
n := cas.Left()
setlineno(n)
r := nod(OIF, nil, nil)
r.Ninit.Set(cas.Ninit.Slice())
switch n.Op {
r := ir.Nod(ir.OIF, nil, nil)
r.PtrInit().Set(cas.Init().Slice())
switch n.Op() {
default:
Fatalf("select %v", n.Op)
base.Fatalf("select %v", n.Op())
case OSEND:
case ir.OSEND:
// if selectnbsend(c, v) { body } else { default body }
ch := n.Left
r.Left = mkcall1(chanfn("selectnbsend", 2, ch.Type), types.Types[TBOOL], &r.Ninit, ch, n.Right)
ch := n.Left()
r.SetLeft(mkcall1(chanfn("selectnbsend", 2, ch.Type()), types.Types[types.TBOOL], r.PtrInit(), ch, n.Right()))
case OSELRECV:
case ir.OSELRECV:
// if selectnbrecv(&v, c) { body } else { default body }
ch := n.Right.Left
elem := n.Left
ch := n.Right().Left()
elem := n.Left()
if elem == nil {
elem = nodnil()
}
r.Left = mkcall1(chanfn("selectnbrecv", 2, ch.Type), types.Types[TBOOL], &r.Ninit, elem, ch)
r.SetLeft(mkcall1(chanfn("selectnbrecv", 2, ch.Type()), types.Types[types.TBOOL], r.PtrInit(), elem, ch))
case OSELRECV2:
case ir.OSELRECV2:
// if selectnbrecv2(&v, &received, c) { body } else { default body }
ch := n.Right.Left
elem := n.Left
ch := n.Right().Left()
elem := n.Left()
if elem == nil {
elem = nodnil()
}
receivedp := nod(OADDR, n.List.First(), nil)
receivedp := ir.Nod(ir.OADDR, n.List().First(), nil)
receivedp = typecheck(receivedp, ctxExpr)
r.Left = mkcall1(chanfn("selectnbrecv2", 2, ch.Type), types.Types[TBOOL], &r.Ninit, elem, receivedp, ch)
r.SetLeft(mkcall1(chanfn("selectnbrecv2", 2, ch.Type()), types.Types[types.TBOOL], r.PtrInit(), elem, receivedp, ch))
}
r.Left = typecheck(r.Left, ctxExpr)
r.Nbody.Set(cas.Nbody.Slice())
r.Rlist.Set(append(dflt.Ninit.Slice(), dflt.Nbody.Slice()...))
return []*Node{r, nod(OBREAK, nil, nil)}
r.SetLeft(typecheck(r.Left(), ctxExpr))
r.PtrBody().Set(cas.Body().Slice())
r.PtrRlist().Set(append(dflt.Init().Slice(), dflt.Body().Slice()...))
return []ir.Node{r, ir.Nod(ir.OBREAK, nil, nil)}
}
if dflt != nil {
ncas--
}
casorder := make([]*Node, ncas)
casorder := make([]ir.Node, ncas)
nsends, nrecvs := 0, 0
var init []*Node
var init []ir.Node
// generate sel-struct
lineno = sellineno
base.Pos = sellineno
selv := temp(types.NewArray(scasetype(), int64(ncas)))
r := nod(OAS, selv, nil)
r := ir.Nod(ir.OAS, selv, nil)
r = typecheck(r, ctxStmt)
init = append(init, r)
// No initialization for order; runtime.selectgo is responsible for that.
order := temp(types.NewArray(types.Types[TUINT16], 2*int64(ncas)))
order := temp(types.NewArray(types.Types[types.TUINT16], 2*int64(ncas)))
var pc0, pcs *Node
if flag_race {
pcs = temp(types.NewArray(types.Types[TUINTPTR], int64(ncas)))
pc0 = typecheck(nod(OADDR, nod(OINDEX, pcs, nodintconst(0)), nil), ctxExpr)
var pc0, pcs ir.Node
if base.Flag.Race {
pcs = temp(types.NewArray(types.Types[types.TUINTPTR], int64(ncas)))
pc0 = typecheck(ir.Nod(ir.OADDR, ir.Nod(ir.OINDEX, pcs, nodintconst(0)), nil), ctxExpr)
} else {
pc0 = nodnil()
}
@ -266,109 +270,109 @@ func walkselectcases(cases *Nodes) []*Node {
for _, cas := range cases.Slice() {
setlineno(cas)
init = append(init, cas.Ninit.Slice()...)
cas.Ninit.Set(nil)
init = append(init, cas.Init().Slice()...)
cas.PtrInit().Set(nil)
n := cas.Left
n := cas.Left()
if n == nil { // default:
continue
}
var i int
var c, elem *Node
switch n.Op {
var c, elem ir.Node
switch n.Op() {
default:
Fatalf("select %v", n.Op)
case OSEND:
base.Fatalf("select %v", n.Op())
case ir.OSEND:
i = nsends
nsends++
c = n.Left
elem = n.Right
case OSELRECV, OSELRECV2:
c = n.Left()
elem = n.Right()
case ir.OSELRECV, ir.OSELRECV2:
nrecvs++
i = ncas - nrecvs
c = n.Right.Left
elem = n.Left
c = n.Right().Left()
elem = n.Left()
}
casorder[i] = cas
setField := func(f string, val *Node) {
r := nod(OAS, nodSym(ODOT, nod(OINDEX, selv, nodintconst(int64(i))), lookup(f)), val)
setField := func(f string, val ir.Node) {
r := ir.Nod(ir.OAS, nodSym(ir.ODOT, ir.Nod(ir.OINDEX, selv, nodintconst(int64(i))), lookup(f)), val)
r = typecheck(r, ctxStmt)
init = append(init, r)
}
c = convnop(c, types.Types[TUNSAFEPTR])
c = convnop(c, types.Types[types.TUNSAFEPTR])
setField("c", c)
if elem != nil {
elem = convnop(elem, types.Types[TUNSAFEPTR])
elem = convnop(elem, types.Types[types.TUNSAFEPTR])
setField("elem", elem)
}
// TODO(mdempsky): There should be a cleaner way to
// handle this.
if flag_race {
r = mkcall("selectsetpc", nil, nil, nod(OADDR, nod(OINDEX, pcs, nodintconst(int64(i))), nil))
if base.Flag.Race {
r = mkcall("selectsetpc", nil, nil, ir.Nod(ir.OADDR, ir.Nod(ir.OINDEX, pcs, nodintconst(int64(i))), nil))
init = append(init, r)
}
}
if nsends+nrecvs != ncas {
Fatalf("walkselectcases: miscount: %v + %v != %v", nsends, nrecvs, ncas)
base.Fatalf("walkselectcases: miscount: %v + %v != %v", nsends, nrecvs, ncas)
}
// run the select
lineno = sellineno
chosen := temp(types.Types[TINT])
recvOK := temp(types.Types[TBOOL])
r = nod(OAS2, nil, nil)
r.List.Set2(chosen, recvOK)
base.Pos = sellineno
chosen := temp(types.Types[types.TINT])
recvOK := temp(types.Types[types.TBOOL])
r = ir.Nod(ir.OAS2, nil, nil)
r.PtrList().Set2(chosen, recvOK)
fn := syslook("selectgo")
r.Rlist.Set1(mkcall1(fn, fn.Type.Results(), nil, bytePtrToIndex(selv, 0), bytePtrToIndex(order, 0), pc0, nodintconst(int64(nsends)), nodintconst(int64(nrecvs)), nodbool(dflt == nil)))
r.PtrRlist().Set1(mkcall1(fn, fn.Type().Results(), nil, bytePtrToIndex(selv, 0), bytePtrToIndex(order, 0), pc0, nodintconst(int64(nsends)), nodintconst(int64(nrecvs)), nodbool(dflt == nil)))
r = typecheck(r, ctxStmt)
init = append(init, r)
// selv and order are no longer alive after selectgo.
init = append(init, nod(OVARKILL, selv, nil))
init = append(init, nod(OVARKILL, order, nil))
if flag_race {
init = append(init, nod(OVARKILL, pcs, nil))
init = append(init, ir.Nod(ir.OVARKILL, selv, nil))
init = append(init, ir.Nod(ir.OVARKILL, order, nil))
if base.Flag.Race {
init = append(init, ir.Nod(ir.OVARKILL, pcs, nil))
}
// dispatch cases
dispatch := func(cond, cas *Node) {
dispatch := func(cond, cas ir.Node) {
cond = typecheck(cond, ctxExpr)
cond = defaultlit(cond, nil)
r := nod(OIF, cond, nil)
r := ir.Nod(ir.OIF, cond, nil)
if n := cas.Left; n != nil && n.Op == OSELRECV2 {
x := nod(OAS, n.List.First(), recvOK)
if n := cas.Left(); n != nil && n.Op() == ir.OSELRECV2 {
x := ir.Nod(ir.OAS, n.List().First(), recvOK)
x = typecheck(x, ctxStmt)
r.Nbody.Append(x)
r.PtrBody().Append(x)
}
r.Nbody.AppendNodes(&cas.Nbody)
r.Nbody.Append(nod(OBREAK, nil, nil))
r.PtrBody().AppendNodes(cas.PtrBody())
r.PtrBody().Append(ir.Nod(ir.OBREAK, nil, nil))
init = append(init, r)
}
if dflt != nil {
setlineno(dflt)
dispatch(nod(OLT, chosen, nodintconst(0)), dflt)
dispatch(ir.Nod(ir.OLT, chosen, nodintconst(0)), dflt)
}
for i, cas := range casorder {
setlineno(cas)
dispatch(nod(OEQ, chosen, nodintconst(int64(i))), cas)
dispatch(ir.Nod(ir.OEQ, chosen, nodintconst(int64(i))), cas)
}
return init
}
// bytePtrToIndex returns a Node representing "(*byte)(&n[i])".
func bytePtrToIndex(n *Node, i int64) *Node {
s := nod(OADDR, nod(OINDEX, n, nodintconst(i)), nil)
t := types.NewPtr(types.Types[TUINT8])
func bytePtrToIndex(n ir.Node, i int64) ir.Node {
s := ir.Nod(ir.OADDR, ir.Nod(ir.OINDEX, n, nodintconst(i)), nil)
t := types.NewPtr(types.Types[types.TUINT8])
return convnop(s, t)
}
@ -377,9 +381,9 @@ var scase *types.Type
// Keep in sync with src/runtime/select.go.
func scasetype() *types.Type {
if scase == nil {
scase = tostruct([]*Node{
namedfield("c", types.Types[TUNSAFEPTR]),
namedfield("elem", types.Types[TUNSAFEPTR]),
scase = tostruct([]ir.Node{
namedfield("c", types.Types[types.TUNSAFEPTR]),
namedfield("elem", types.Types[types.TUNSAFEPTR]),
})
scase.SetNoalg(true)
}

736
src/cmd/compile/internal/gc/sinit.go
View file

File diff suppressed because it is too large Load diff

3189
src/cmd/compile/internal/gc/ssa.go
View file

File diff suppressed because it is too large Load diff

1022
src/cmd/compile/internal/gc/subr.go
View file

File diff suppressed because it is too large Load diff

463
src/cmd/compile/internal/gc/swt.go
View file

@ -5,43 +5,47 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
"go/constant"
"go/token"
"sort"
)
// typecheckswitch typechecks a switch statement.
func typecheckswitch(n *Node) {
typecheckslice(n.Ninit.Slice(), ctxStmt)
if n.Left != nil && n.Left.Op == OTYPESW {
func typecheckswitch(n ir.Node) {
typecheckslice(n.Init().Slice(), ctxStmt)
if n.Left() != nil && n.Left().Op() == ir.OTYPESW {
typecheckTypeSwitch(n)
} else {
typecheckExprSwitch(n)
}
}
func typecheckTypeSwitch(n *Node) {
n.Left.Right = typecheck(n.Left.Right, ctxExpr)
t := n.Left.Right.Type
func typecheckTypeSwitch(n ir.Node) {
n.Left().SetRight(typecheck(n.Left().Right(), ctxExpr))
t := n.Left().Right().Type()
if t != nil && !t.IsInterface() {
yyerrorl(n.Pos, "cannot type switch on non-interface value %L", n.Left.Right)
base.ErrorfAt(n.Pos(), "cannot type switch on non-interface value %L", n.Left().Right())
t = nil
}
// We don't actually declare the type switch's guarded
// declaration itself. So if there are no cases, we won't
// notice that it went unused.
if v := n.Left.Left; v != nil && !v.isBlank() && n.List.Len() == 0 {
yyerrorl(v.Pos, "%v declared but not used", v.Sym)
if v := n.Left().Left(); v != nil && !ir.IsBlank(v) && n.List().Len() == 0 {
base.ErrorfAt(v.Pos(), "%v declared but not used", v.Sym())
}
var defCase, nilCase *Node
var defCase, nilCase ir.Node
var ts typeSet
for _, ncase := range n.List.Slice() {
ls := ncase.List.Slice()
for _, ncase := range n.List().Slice() {
ls := ncase.List().Slice()
if len(ls) == 0 { // default:
if defCase != nil {
yyerrorl(ncase.Pos, "multiple defaults in switch (first at %v)", defCase.Line())
base.ErrorfAt(ncase.Pos(), "multiple defaults in switch (first at %v)", ir.Line(defCase))
} else {
defCase = ncase
}
@ -50,65 +54,65 @@ func typecheckTypeSwitch(n *Node) {
for i := range ls {
ls[i] = typecheck(ls[i], ctxExpr|ctxType)
n1 := ls[i]
if t == nil || n1.Type == nil {
if t == nil || n1.Type() == nil {
continue
}
var missing, have *types.Field
var ptr int
switch {
case n1.isNil(): // case nil:
case ir.IsNil(n1): // case nil:
if nilCase != nil {
yyerrorl(ncase.Pos, "multiple nil cases in type switch (first at %v)", nilCase.Line())
base.ErrorfAt(ncase.Pos(), "multiple nil cases in type switch (first at %v)", ir.Line(nilCase))
} else {
nilCase = ncase
}
case n1.Op != OTYPE:
yyerrorl(ncase.Pos, "%L is not a type", n1)
case !n1.Type.IsInterface() && !implements(n1.Type, t, &missing, &have, &ptr) && !missing.Broke():
case n1.Op() != ir.OTYPE:
base.ErrorfAt(ncase.Pos(), "%L is not a type", n1)
case !n1.Type().IsInterface() && !implements(n1.Type(), t, &missing, &have, &ptr) && !missing.Broke():
if have != nil && !have.Broke() {
yyerrorl(ncase.Pos, "impossible type switch case: %L cannot have dynamic type %v"+
" (wrong type for %v method)\n\thave %v%S\n\twant %v%S", n.Left.Right, n1.Type, missing.Sym, have.Sym, have.Type, missing.Sym, missing.Type)
base.ErrorfAt(ncase.Pos(), "impossible type switch case: %L cannot have dynamic type %v"+
" (wrong type for %v method)\n\thave %v%S\n\twant %v%S", n.Left().Right(), n1.Type(), missing.Sym, have.Sym, have.Type, missing.Sym, missing.Type)
} else if ptr != 0 {
yyerrorl(ncase.Pos, "impossible type switch case: %L cannot have dynamic type %v"+
" (%v method has pointer receiver)", n.Left.Right, n1.Type, missing.Sym)
base.ErrorfAt(ncase.Pos(), "impossible type switch case: %L cannot have dynamic type %v"+
" (%v method has pointer receiver)", n.Left().Right(), n1.Type(), missing.Sym)
} else {
yyerrorl(ncase.Pos, "impossible type switch case: %L cannot have dynamic type %v"+
" (missing %v method)", n.Left.Right, n1.Type, missing.Sym)
base.ErrorfAt(ncase.Pos(), "impossible type switch case: %L cannot have dynamic type %v"+
" (missing %v method)", n.Left().Right(), n1.Type(), missing.Sym)
}
}
if n1.Op == OTYPE {
ts.add(ncase.Pos, n1.Type)
if n1.Op() == ir.OTYPE {
ts.add(ncase.Pos(), n1.Type())
}
}
if ncase.Rlist.Len() != 0 {
if ncase.Rlist().Len() != 0 {
// Assign the clause variable's type.
vt := t
if len(ls) == 1 {
if ls[0].Op == OTYPE {
vt = ls[0].Type
} else if ls[0].Op != OLITERAL { // TODO(mdempsky): Should be !ls[0].isNil()
if ls[0].Op() == ir.OTYPE {
vt = ls[0].Type()
} else if !ir.IsNil(ls[0]) {
// Invalid single-type case;
// mark variable as broken.
vt = nil
}
}
// TODO(mdempsky): It should be possible to
// still typecheck the case body.
if vt == nil {
continue
}
nvar := ncase.Rlist.First()
nvar.Type = vt
nvar := ncase.Rlist().First()
nvar.SetType(vt)
if vt != nil {
nvar = typecheck(nvar, ctxExpr|ctxAssign)
ncase.Rlist.SetFirst(nvar)
} else {
// Clause variable is broken; prevent typechecking.
nvar.SetTypecheck(1)
nvar.SetWalkdef(1)
}
ncase.Rlist().SetFirst(nvar)
}
typecheckslice(ncase.Nbody.Slice(), ctxStmt)
typecheckslice(ncase.Body().Slice(), ctxStmt)
}
}
@ -133,19 +137,19 @@ func (s *typeSet) add(pos src.XPos, typ *types.Type) {
prevs := s.m[ls]
for _, prev := range prevs {
if types.Identical(typ, prev.typ) {
yyerrorl(pos, "duplicate case %v in type switch\n\tprevious case at %s", typ, linestr(prev.pos))
base.ErrorfAt(pos, "duplicate case %v in type switch\n\tprevious case at %s", typ, base.FmtPos(prev.pos))
return
}
}
s.m[ls] = append(prevs, typeSetEntry{pos, typ})
}
func typecheckExprSwitch(n *Node) {
t := types.Types[TBOOL]
if n.Left != nil {
n.Left = typecheck(n.Left, ctxExpr)
n.Left = defaultlit(n.Left, nil)
t = n.Left.Type
func typecheckExprSwitch(n ir.Node) {
t := types.Types[types.TBOOL]
if n.Left() != nil {
n.SetLeft(typecheck(n.Left(), ctxExpr))
n.SetLeft(defaultlit(n.Left(), nil))
t = n.Left().Type()
}
var nilonly string
@ -153,28 +157,28 @@ func typecheckExprSwitch(n *Node) {
switch {
case t.IsMap():
nilonly = "map"
case t.Etype == TFUNC:
case t.Etype == types.TFUNC:
nilonly = "func"
case t.IsSlice():
nilonly = "slice"
case !IsComparable(t):
if t.IsStruct() {
yyerrorl(n.Pos, "cannot switch on %L (struct containing %v cannot be compared)", n.Left, IncomparableField(t).Type)
base.ErrorfAt(n.Pos(), "cannot switch on %L (struct containing %v cannot be compared)", n.Left(), IncomparableField(t).Type)
} else {
yyerrorl(n.Pos, "cannot switch on %L", n.Left)
base.ErrorfAt(n.Pos(), "cannot switch on %L", n.Left())
}
t = nil
}
}
var defCase *Node
var defCase ir.Node
var cs constSet
for _, ncase := range n.List.Slice() {
ls := ncase.List.Slice()
for _, ncase := range n.List().Slice() {
ls := ncase.List().Slice()
if len(ls) == 0 { // default:
if defCase != nil {
yyerrorl(ncase.Pos, "multiple defaults in switch (first at %v)", defCase.Line())
base.ErrorfAt(ncase.Pos(), "multiple defaults in switch (first at %v)", ir.Line(defCase))
} else {
defCase = ncase
}
@ -185,22 +189,22 @@ func typecheckExprSwitch(n *Node) {
ls[i] = typecheck(ls[i], ctxExpr)
ls[i] = defaultlit(ls[i], t)
n1 := ls[i]
if t == nil || n1.Type == nil {
if t == nil || n1.Type() == nil {
continue
}
if nilonly != "" && !n1.isNil() {
yyerrorl(ncase.Pos, "invalid case %v in switch (can only compare %s %v to nil)", n1, nilonly, n.Left)
} else if t.IsInterface() && !n1.Type.IsInterface() && !IsComparable(n1.Type) {
yyerrorl(ncase.Pos, "invalid case %L in switch (incomparable type)", n1)
if nilonly != "" && !ir.IsNil(n1) {
base.ErrorfAt(ncase.Pos(), "invalid case %v in switch (can only compare %s %v to nil)", n1, nilonly, n.Left())
} else if t.IsInterface() && !n1.Type().IsInterface() && !IsComparable(n1.Type()) {
base.ErrorfAt(ncase.Pos(), "invalid case %L in switch (incomparable type)", n1)
} else {
op1, _ := assignop(n1.Type, t)
op2, _ := assignop(t, n1.Type)
if op1 == OXXX && op2 == OXXX {
if n.Left != nil {
yyerrorl(ncase.Pos, "invalid case %v in switch on %v (mismatched types %v and %v)", n1, n.Left, n1.Type, t)
op1, _ := assignop(n1.Type(), t)
op2, _ := assignop(t, n1.Type())
if op1 == ir.OXXX && op2 == ir.OXXX {
if n.Left() != nil {
base.ErrorfAt(ncase.Pos(), "invalid case %v in switch on %v (mismatched types %v and %v)", n1, n.Left(), n1.Type(), t)
} else {
yyerrorl(ncase.Pos, "invalid case %v in switch (mismatched types %v and bool)", n1, n1.Type)
base.ErrorfAt(ncase.Pos(), "invalid case %v in switch (mismatched types %v and bool)", n1, n1.Type())
}
}
}
@ -211,23 +215,23 @@ func typecheckExprSwitch(n *Node) {
// case GOARCH == "arm" && GOARM == "5":
// case GOARCH == "arm":
// which would both evaluate to false for non-ARM compiles.
if !n1.Type.IsBoolean() {
cs.add(ncase.Pos, n1, "case", "switch")
if !n1.Type().IsBoolean() {
cs.add(ncase.Pos(), n1, "case", "switch")
}
}
typecheckslice(ncase.Nbody.Slice(), ctxStmt)
typecheckslice(ncase.Body().Slice(), ctxStmt)
}
}
// walkswitch walks a switch statement.
func walkswitch(sw *Node) {
func walkswitch(sw ir.Node) {
// Guard against double walk, see #25776.
if sw.List.Len() == 0 && sw.Nbody.Len() > 0 {
if sw.List().Len() == 0 && sw.Body().Len() > 0 {
return // Was fatal, but eliminating every possible source of double-walking is hard
}
if sw.Left != nil && sw.Left.Op == OTYPESW {
if sw.Left() != nil && sw.Left().Op() == ir.OTYPESW {
walkTypeSwitch(sw)
} else {
walkExprSwitch(sw)
@ -236,11 +240,11 @@ func walkswitch(sw *Node) {
// walkExprSwitch generates an AST implementing sw. sw is an
// expression switch.
func walkExprSwitch(sw *Node) {
func walkExprSwitch(sw ir.Node) {
lno := setlineno(sw)
cond := sw.Left
sw.Left = nil
cond := sw.Left()
sw.SetLeft(nil)
// convert switch {...} to switch true {...}
if cond == nil {
@ -256,79 +260,79 @@ func walkExprSwitch(sw *Node) {
// because walkexpr will lower the string
// conversion into a runtime call.
// See issue 24937 for more discussion.
if cond.Op == OBYTES2STR && allCaseExprsAreSideEffectFree(sw) {
cond.Op = OBYTES2STRTMP
if cond.Op() == ir.OBYTES2STR && allCaseExprsAreSideEffectFree(sw) {
cond.SetOp(ir.OBYTES2STRTMP)
}
cond = walkexpr(cond, &sw.Ninit)
if cond.Op != OLITERAL {
cond = copyexpr(cond, cond.Type, &sw.Nbody)
cond = walkexpr(cond, sw.PtrInit())
if cond.Op() != ir.OLITERAL && cond.Op() != ir.ONIL {
cond = copyexpr(cond, cond.Type(), sw.PtrBody())
}
lineno = lno
base.Pos = lno
s := exprSwitch{
exprname: cond,
}
var defaultGoto *Node
var body Nodes
for _, ncase := range sw.List.Slice() {
var defaultGoto ir.Node
var body ir.Nodes
for _, ncase := range sw.List().Slice() {
label := autolabel(".s")
jmp := npos(ncase.Pos, nodSym(OGOTO, nil, label))
jmp := npos(ncase.Pos(), nodSym(ir.OGOTO, nil, label))
// Process case dispatch.
if ncase.List.Len() == 0 {
if ncase.List().Len() == 0 {
if defaultGoto != nil {
Fatalf("duplicate default case not detected during typechecking")
base.Fatalf("duplicate default case not detected during typechecking")
}
defaultGoto = jmp
}
for _, n1 := range ncase.List.Slice() {
s.Add(ncase.Pos, n1, jmp)
for _, n1 := range ncase.List().Slice() {
s.Add(ncase.Pos(), n1, jmp)
}
// Process body.
body.Append(npos(ncase.Pos, nodSym(OLABEL, nil, label)))
body.Append(ncase.Nbody.Slice()...)
if fall, pos := hasFall(ncase.Nbody.Slice()); !fall {
br := nod(OBREAK, nil, nil)
br.Pos = pos
body.Append(npos(ncase.Pos(), nodSym(ir.OLABEL, nil, label)))
body.Append(ncase.Body().Slice()...)
if fall, pos := hasFall(ncase.Body().Slice()); !fall {
br := ir.Nod(ir.OBREAK, nil, nil)
br.SetPos(pos)
body.Append(br)
}
}
sw.List.Set(nil)
sw.PtrList().Set(nil)
if defaultGoto == nil {
br := nod(OBREAK, nil, nil)
br.Pos = br.Pos.WithNotStmt()
br := ir.Nod(ir.OBREAK, nil, nil)
br.SetPos(br.Pos().WithNotStmt())
defaultGoto = br
}
s.Emit(&sw.Nbody)
sw.Nbody.Append(defaultGoto)
sw.Nbody.AppendNodes(&body)
walkstmtlist(sw.Nbody.Slice())
s.Emit(sw.PtrBody())
sw.PtrBody().Append(defaultGoto)
sw.PtrBody().AppendNodes(&body)
walkstmtlist(sw.Body().Slice())
}
// An exprSwitch walks an expression switch.
type exprSwitch struct {
exprname *Node // value being switched on
exprname ir.Node // value being switched on
done Nodes
done ir.Nodes
clauses []exprClause
}
type exprClause struct {
pos src.XPos
lo, hi *Node
jmp *Node
lo, hi ir.Node
jmp ir.Node
}
func (s *exprSwitch) Add(pos src.XPos, expr, jmp *Node) {
func (s *exprSwitch) Add(pos src.XPos, expr, jmp ir.Node) {
c := exprClause{pos: pos, lo: expr, hi: expr, jmp: jmp}
if okforcmp[s.exprname.Type.Etype] && expr.Op == OLITERAL {
if okforcmp[s.exprname.Type().Etype] && expr.Op() == ir.OLITERAL {
s.clauses = append(s.clauses, c)
return
}
@ -338,7 +342,7 @@ func (s *exprSwitch) Add(pos src.XPos, expr, jmp *Node) {
s.flush()
}
func (s *exprSwitch) Emit(out *Nodes) {
func (s *exprSwitch) Emit(out *ir.Nodes) {
s.flush()
out.AppendNodes(&s.done)
}
@ -355,7 +359,7 @@ func (s *exprSwitch) flush() {
// (e.g., sort.Slice doesn't need to invoke the less function
// when there's only a single slice element).
if s.exprname.Type.IsString() && len(cc) >= 2 {
if s.exprname.Type().IsString() && len(cc) >= 2 {
// Sort strings by length and then by value. It is
// much cheaper to compare lengths than values, and
// all we need here is consistency. We respect this
@ -385,26 +389,25 @@ func (s *exprSwitch) flush() {
runs = append(runs, cc[start:])
// Perform two-level binary search.
nlen := nod(OLEN, s.exprname, nil)
binarySearch(len(runs), &s.done,
func(i int) *Node {
return nod(OLE, nlen, nodintconst(runLen(runs[i-1])))
func(i int) ir.Node {
return ir.Nod(ir.OLE, ir.Nod(ir.OLEN, s.exprname, nil), nodintconst(runLen(runs[i-1])))
},
func(i int, nif *Node) {
func(i int, nif ir.Node) {
run := runs[i]
nif.Left = nod(OEQ, nlen, nodintconst(runLen(run)))
s.search(run, &nif.Nbody)
nif.SetLeft(ir.Nod(ir.OEQ, ir.Nod(ir.OLEN, s.exprname, nil), nodintconst(runLen(run))))
s.search(run, nif.PtrBody())
},
)
return
}
sort.Slice(cc, func(i, j int) bool {
return compareOp(cc[i].lo.Val(), OLT, cc[j].lo.Val())
return constant.Compare(cc[i].lo.Val(), token.LSS, cc[j].lo.Val())
})
// Merge consecutive integer cases.
if s.exprname.Type.IsInteger() {
if s.exprname.Type().IsInteger() {
merged := cc[:1]
for _, c := range cc[1:] {
last := &merged[len(merged)-1]
@ -420,40 +423,40 @@ func (s *exprSwitch) flush() {
s.search(cc, &s.done)
}
func (s *exprSwitch) search(cc []exprClause, out *Nodes) {
func (s *exprSwitch) search(cc []exprClause, out *ir.Nodes) {
binarySearch(len(cc), out,
func(i int) *Node {
return nod(OLE, s.exprname, cc[i-1].hi)
func(i int) ir.Node {
return ir.Nod(ir.OLE, s.exprname, cc[i-1].hi)
},
func(i int, nif *Node) {
func(i int, nif ir.Node) {
c := &cc[i]
nif.Left = c.test(s.exprname)
nif.Nbody.Set1(c.jmp)
nif.SetLeft(c.test(s.exprname))
nif.PtrBody().Set1(c.jmp)
},
)
}
func (c *exprClause) test(exprname *Node) *Node {
func (c *exprClause) test(exprname ir.Node) ir.Node {
// Integer range.
if c.hi != c.lo {
low := nodl(c.pos, OGE, exprname, c.lo)
high := nodl(c.pos, OLE, exprname, c.hi)
return nodl(c.pos, OANDAND, low, high)
low := ir.NodAt(c.pos, ir.OGE, exprname, c.lo)
high := ir.NodAt(c.pos, ir.OLE, exprname, c.hi)
return ir.NodAt(c.pos, ir.OANDAND, low, high)
}
// Optimize "switch true { ...}" and "switch false { ... }".
if Isconst(exprname, CTBOOL) && !c.lo.Type.IsInterface() {
if ir.IsConst(exprname, constant.Bool) && !c.lo.Type().IsInterface() {
if exprname.BoolVal() {
return c.lo
} else {
return nodl(c.pos, ONOT, c.lo, nil)
return ir.NodAt(c.pos, ir.ONOT, c.lo, nil)
}
}
return nodl(c.pos, OEQ, exprname, c.lo)
return ir.NodAt(c.pos, ir.OEQ, exprname, c.lo)
}
func allCaseExprsAreSideEffectFree(sw *Node) bool {
func allCaseExprsAreSideEffectFree(sw ir.Node) bool {
// In theory, we could be more aggressive, allowing any
// side-effect-free expressions in cases, but it's a bit
// tricky because some of that information is unavailable due
@ -461,12 +464,12 @@ func allCaseExprsAreSideEffectFree(sw *Node) bool {
// Restricting to constants is simple and probably powerful
// enough.
for _, ncase := range sw.List.Slice() {
if ncase.Op != OCASE {
Fatalf("switch string(byteslice) bad op: %v", ncase.Op)
for _, ncase := range sw.List().Slice() {
if ncase.Op() != ir.OCASE {
base.Fatalf("switch string(byteslice) bad op: %v", ncase.Op())
}
for _, v := range ncase.List.Slice() {
if v.Op != OLITERAL {
for _, v := range ncase.List().Slice() {
if v.Op() != ir.OLITERAL {
return false
}
}
@ -475,7 +478,7 @@ func allCaseExprsAreSideEffectFree(sw *Node) bool {
}
// hasFall reports whether stmts ends with a "fallthrough" statement.
func hasFall(stmts []*Node) (bool, src.XPos) {
func hasFall(stmts []ir.Node) (bool, src.XPos) {
// Search backwards for the index of the fallthrough
// statement. Do not assume it'll be in the last
// position, since in some cases (e.g. when the statement
@ -483,30 +486,30 @@ func hasFall(stmts []*Node) (bool, src.XPos) {
// nodes will be at the end of the list.
i := len(stmts) - 1
for i >= 0 && stmts[i].Op == OVARKILL {
for i >= 0 && stmts[i].Op() == ir.OVARKILL {
i--
}
if i < 0 {
return false, src.NoXPos
}
return stmts[i].Op == OFALL, stmts[i].Pos
return stmts[i].Op() == ir.OFALL, stmts[i].Pos()
}
// walkTypeSwitch generates an AST that implements sw, where sw is a
// type switch.
func walkTypeSwitch(sw *Node) {
func walkTypeSwitch(sw ir.Node) {
var s typeSwitch
s.facename = sw.Left.Right
sw.Left = nil
s.facename = sw.Left().Right()
sw.SetLeft(nil)
s.facename = walkexpr(s.facename, &sw.Ninit)
s.facename = copyexpr(s.facename, s.facename.Type, &sw.Nbody)
s.okname = temp(types.Types[TBOOL])
s.facename = walkexpr(s.facename, sw.PtrInit())
s.facename = copyexpr(s.facename, s.facename.Type(), sw.PtrBody())
s.okname = temp(types.Types[types.TBOOL])
// Get interface descriptor word.
// For empty interfaces this will be the type.
// For non-empty interfaces this will be the itab.
itab := nod(OITAB, s.facename, nil)
itab := ir.Nod(ir.OITAB, s.facename, nil)
// For empty interfaces, do:
// if e._type == nil {
@ -514,92 +517,92 @@ func walkTypeSwitch(sw *Node) {
// }
// h := e._type.hash
// Use a similar strategy for non-empty interfaces.
ifNil := nod(OIF, nil, nil)
ifNil.Left = nod(OEQ, itab, nodnil())
lineno = lineno.WithNotStmt() // disable statement marks after the first check.
ifNil.Left = typecheck(ifNil.Left, ctxExpr)
ifNil.Left = defaultlit(ifNil.Left, nil)
ifNil := ir.Nod(ir.OIF, nil, nil)
ifNil.SetLeft(ir.Nod(ir.OEQ, itab, nodnil()))
base.Pos = base.Pos.WithNotStmt() // disable statement marks after the first check.
ifNil.SetLeft(typecheck(ifNil.Left(), ctxExpr))
ifNil.SetLeft(defaultlit(ifNil.Left(), nil))
// ifNil.Nbody assigned at end.
sw.Nbody.Append(ifNil)
sw.PtrBody().Append(ifNil)
// Load hash from type or itab.
dotHash := nodSym(ODOTPTR, itab, nil)
dotHash.Type = types.Types[TUINT32]
dotHash := nodSym(ir.ODOTPTR, itab, nil)
dotHash.SetType(types.Types[types.TUINT32])
dotHash.SetTypecheck(1)
if s.facename.Type.IsEmptyInterface() {
dotHash.Xoffset = int64(2 * Widthptr) // offset of hash in runtime._type
if s.facename.Type().IsEmptyInterface() {
dotHash.SetOffset(int64(2 * Widthptr)) // offset of hash in runtime._type
} else {
dotHash.Xoffset = int64(2 * Widthptr) // offset of hash in runtime.itab
dotHash.SetOffset(int64(2 * Widthptr)) // offset of hash in runtime.itab
}
dotHash.SetBounded(true) // guaranteed not to fault
s.hashname = copyexpr(dotHash, dotHash.Type, &sw.Nbody)
s.hashname = copyexpr(dotHash, dotHash.Type(), sw.PtrBody())
br := nod(OBREAK, nil, nil)
var defaultGoto, nilGoto *Node
var body Nodes
for _, ncase := range sw.List.Slice() {
var caseVar *Node
if ncase.Rlist.Len() != 0 {
caseVar = ncase.Rlist.First()
br := ir.Nod(ir.OBREAK, nil, nil)
var defaultGoto, nilGoto ir.Node
var body ir.Nodes
for _, ncase := range sw.List().Slice() {
var caseVar ir.Node
if ncase.Rlist().Len() != 0 {
caseVar = ncase.Rlist().First()
}
// For single-type cases with an interface type,
// we initialize the case variable as part of the type assertion.
// In other cases, we initialize it in the body.
var singleType *types.Type
if ncase.List.Len() == 1 && ncase.List.First().Op == OTYPE {
singleType = ncase.List.First().Type
if ncase.List().Len() == 1 && ncase.List().First().Op() == ir.OTYPE {
singleType = ncase.List().First().Type()
}
caseVarInitialized := false
label := autolabel(".s")
jmp := npos(ncase.Pos, nodSym(OGOTO, nil, label))
jmp := npos(ncase.Pos(), nodSym(ir.OGOTO, nil, label))
if ncase.List.Len() == 0 { // default:
if ncase.List().Len() == 0 { // default:
if defaultGoto != nil {
Fatalf("duplicate default case not detected during typechecking")
base.Fatalf("duplicate default case not detected during typechecking")
}
defaultGoto = jmp
}
for _, n1 := range ncase.List.Slice() {
if n1.isNil() { // case nil:
for _, n1 := range ncase.List().Slice() {
if ir.IsNil(n1) { // case nil:
if nilGoto != nil {
Fatalf("duplicate nil case not detected during typechecking")
base.Fatalf("duplicate nil case not detected during typechecking")
}
nilGoto = jmp
continue
}
if singleType != nil && singleType.IsInterface() {
s.Add(ncase.Pos, n1.Type, caseVar, jmp)
s.Add(ncase.Pos(), n1.Type(), caseVar, jmp)
caseVarInitialized = true
} else {
s.Add(ncase.Pos, n1.Type, nil, jmp)
s.Add(ncase.Pos(), n1.Type(), nil, jmp)
}
}
body.Append(npos(ncase.Pos, nodSym(OLABEL, nil, label)))
body.Append(npos(ncase.Pos(), nodSym(ir.OLABEL, nil, label)))
if caseVar != nil && !caseVarInitialized {
val := s.facename
if singleType != nil {
// We have a single concrete type. Extract the data.
if singleType.IsInterface() {
Fatalf("singleType interface should have been handled in Add")
base.Fatalf("singleType interface should have been handled in Add")
}
val = ifaceData(ncase.Pos, s.facename, singleType)
val = ifaceData(ncase.Pos(), s.facename, singleType)
}
l := []*Node{
nodl(ncase.Pos, ODCL, caseVar, nil),
nodl(ncase.Pos, OAS, caseVar, val),
l := []ir.Node{
ir.NodAt(ncase.Pos(), ir.ODCL, caseVar, nil),
ir.NodAt(ncase.Pos(), ir.OAS, caseVar, val),
}
typecheckslice(l, ctxStmt)
body.Append(l...)
}
body.Append(ncase.Nbody.Slice()...)
body.Append(ncase.Body().Slice()...)
body.Append(br)
}
sw.List.Set(nil)
sw.PtrList().Set(nil)
if defaultGoto == nil {
defaultGoto = br
@ -607,58 +610,58 @@ func walkTypeSwitch(sw *Node) {
if nilGoto == nil {
nilGoto = defaultGoto
}
ifNil.Nbody.Set1(nilGoto)
ifNil.PtrBody().Set1(nilGoto)
s.Emit(&sw.Nbody)
sw.Nbody.Append(defaultGoto)
sw.Nbody.AppendNodes(&body)
s.Emit(sw.PtrBody())
sw.PtrBody().Append(defaultGoto)
sw.PtrBody().AppendNodes(&body)
walkstmtlist(sw.Nbody.Slice())
walkstmtlist(sw.Body().Slice())
}
// A typeSwitch walks a type switch.
type typeSwitch struct {
// Temporary variables (i.e., ONAMEs) used by type switch dispatch logic:
facename *Node // value being type-switched on
hashname *Node // type hash of the value being type-switched on
okname *Node // boolean used for comma-ok type assertions
facename ir.Node // value being type-switched on
hashname ir.Node // type hash of the value being type-switched on
okname ir.Node // boolean used for comma-ok type assertions
done Nodes
done ir.Nodes
clauses []typeClause
}
type typeClause struct {
hash uint32
body Nodes
body ir.Nodes
}
func (s *typeSwitch) Add(pos src.XPos, typ *types.Type, caseVar, jmp *Node) {
var body Nodes
func (s *typeSwitch) Add(pos src.XPos, typ *types.Type, caseVar, jmp ir.Node) {
var body ir.Nodes
if caseVar != nil {
l := []*Node{
nodl(pos, ODCL, caseVar, nil),
nodl(pos, OAS, caseVar, nil),
l := []ir.Node{
ir.NodAt(pos, ir.ODCL, caseVar, nil),
ir.NodAt(pos, ir.OAS, caseVar, nil),
}
typecheckslice(l, ctxStmt)
body.Append(l...)
} else {
caseVar = nblank
caseVar = ir.BlankNode
}
// cv, ok = iface.(type)
as := nodl(pos, OAS2, nil, nil)
as.List.Set2(caseVar, s.okname) // cv, ok =
dot := nodl(pos, ODOTTYPE, s.facename, nil)
dot.Type = typ // iface.(type)
as.Rlist.Set1(dot)
as := ir.NodAt(pos, ir.OAS2, nil, nil)
as.PtrList().Set2(caseVar, s.okname) // cv, ok =
dot := ir.NodAt(pos, ir.ODOTTYPE, s.facename, nil)
dot.SetType(typ) // iface.(type)
as.PtrRlist().Set1(dot)
as = typecheck(as, ctxStmt)
as = walkexpr(as, &body)
body.Append(as)
// if ok { goto label }
nif := nodl(pos, OIF, nil, nil)
nif.Left = s.okname
nif.Nbody.Set1(jmp)
nif := ir.NodAt(pos, ir.OIF, nil, nil)
nif.SetLeft(s.okname)
nif.PtrBody().Set1(jmp)
body.Append(nif)
if !typ.IsInterface() {
@ -673,7 +676,7 @@ func (s *typeSwitch) Add(pos src.XPos, typ *types.Type, caseVar, jmp *Node) {
s.done.AppendNodes(&body)
}
func (s *typeSwitch) Emit(out *Nodes) {
func (s *typeSwitch) Emit(out *ir.Nodes) {
s.flush()
out.AppendNodes(&s.done)
}
@ -700,15 +703,15 @@ func (s *typeSwitch) flush() {
cc = merged
binarySearch(len(cc), &s.done,
func(i int) *Node {
return nod(OLE, s.hashname, nodintconst(int64(cc[i-1].hash)))
func(i int) ir.Node {
return ir.Nod(ir.OLE, s.hashname, nodintconst(int64(cc[i-1].hash)))
},
func(i int, nif *Node) {
func(i int, nif ir.Node) {
// TODO(mdempsky): Omit hash equality check if
// there's only one type.
c := cc[i]
nif.Left = nod(OEQ, s.hashname, nodintconst(int64(c.hash)))
nif.Nbody.AppendNodes(&c.body)
nif.SetLeft(ir.Nod(ir.OEQ, s.hashname, nodintconst(int64(c.hash))))
nif.PtrBody().AppendNodes(&c.body)
},
)
}
@ -720,35 +723,35 @@ func (s *typeSwitch) flush() {
// less(i) should return a boolean expression. If it evaluates true,
// then cases before i will be tested; otherwise, cases i and later.
//
// base(i, nif) should setup nif (an OIF node) to test case i. In
// leaf(i, nif) should setup nif (an OIF node) to test case i. In
// particular, it should set nif.Left and nif.Nbody.
func binarySearch(n int, out *Nodes, less func(i int) *Node, base func(i int, nif *Node)) {
func binarySearch(n int, out *ir.Nodes, less func(i int) ir.Node, leaf func(i int, nif ir.Node)) {
const binarySearchMin = 4 // minimum number of cases for binary search
var do func(lo, hi int, out *Nodes)
do = func(lo, hi int, out *Nodes) {
var do func(lo, hi int, out *ir.Nodes)
do = func(lo, hi int, out *ir.Nodes) {
n := hi - lo
if n < binarySearchMin {
for i := lo; i < hi; i++ {
nif := nod(OIF, nil, nil)
base(i, nif)
lineno = lineno.WithNotStmt()
nif.Left = typecheck(nif.Left, ctxExpr)
nif.Left = defaultlit(nif.Left, nil)
nif := ir.Nod(ir.OIF, nil, nil)
leaf(i, nif)
base.Pos = base.Pos.WithNotStmt()
nif.SetLeft(typecheck(nif.Left(), ctxExpr))
nif.SetLeft(defaultlit(nif.Left(), nil))
out.Append(nif)
out = &nif.Rlist
out = nif.PtrRlist()
}
return
}
half := lo + n/2
nif := nod(OIF, nil, nil)
nif.Left = less(half)
lineno = lineno.WithNotStmt()
nif.Left = typecheck(nif.Left, ctxExpr)
nif.Left = defaultlit(nif.Left, nil)
do(lo, half, &nif.Nbody)
do(half, hi, &nif.Rlist)
nif := ir.Nod(ir.OIF, nil, nil)
nif.SetLeft(less(half))
base.Pos = base.Pos.WithNotStmt()
nif.SetLeft(typecheck(nif.Left(), ctxExpr))
nif.SetLeft(defaultlit(nif.Left(), nil))
do(lo, half, nif.PtrBody())
do(half, hi, nif.PtrRlist())
out.Append(nif)
}

8
src/cmd/compile/internal/gc/trace.go
View file

@ -9,6 +9,8 @@ package gc
import (
"os"
tracepkg "runtime/trace"
"cmd/compile/internal/base"
)
func init() {
@ -18,10 +20,10 @@ func init() {
func traceHandlerGo17(traceprofile string) {
f, err := os.Create(traceprofile)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
if err := tracepkg.Start(f); err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
atExit(tracepkg.Stop)
base.AtExit(tracepkg.Stop)
}

3021
src/cmd/compile/internal/gc/typecheck.go
View file

File diff suppressed because it is too large Load diff

53
src/cmd/compile/internal/gc/types.go
View file

@ -3,56 +3,3 @@
// license that can be found in the LICENSE file.
package gc
import (
"cmd/compile/internal/types"
)
// convenience constants
const (
Txxx = types.Txxx
TINT8 = types.TINT8
TUINT8 = types.TUINT8
TINT16 = types.TINT16
TUINT16 = types.TUINT16
TINT32 = types.TINT32
TUINT32 = types.TUINT32
TINT64 = types.TINT64
TUINT64 = types.TUINT64
TINT = types.TINT
TUINT = types.TUINT
TUINTPTR = types.TUINTPTR
TCOMPLEX64 = types.TCOMPLEX64
TCOMPLEX128 = types.TCOMPLEX128
TFLOAT32 = types.TFLOAT32
TFLOAT64 = types.TFLOAT64
TBOOL = types.TBOOL
TPTR = types.TPTR
TFUNC = types.TFUNC
TSLICE = types.TSLICE
TARRAY = types.TARRAY
TSTRUCT = types.TSTRUCT
TCHAN = types.TCHAN
TMAP = types.TMAP
TINTER = types.TINTER
TFORW = types.TFORW
TANY = types.TANY
TSTRING = types.TSTRING
TUNSAFEPTR = types.TUNSAFEPTR
// pseudo-types for literals
TIDEAL = types.TIDEAL
TNIL = types.TNIL
TBLANK = types.TBLANK
// pseudo-types for frame layout
TFUNCARGS = types.TFUNCARGS
TCHANARGS = types.TCHANARGS
NTYPE = types.NTYPE
)

8
src/cmd/compile/internal/gc/types_acc.go
View file

@ -6,11 +6,3 @@
// TODO(gri) try to eliminate these soon
package gc
import (
"cmd/compile/internal/types"
"unsafe"
)
func asNode(n *types.Node) *Node { return (*Node)(unsafe.Pointer(n)) }
func asTypesNode(n *Node) *types.Node { return (*types.Node)(unsafe.Pointer(n)) }

419
src/cmd/compile/internal/gc/universe.go
View file

@ -6,29 +6,31 @@
package gc
import "cmd/compile/internal/types"
// builtinpkg is a fake package that declares the universe block.
var builtinpkg *types.Pkg
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
)
var basicTypes = [...]struct {
name string
etype types.EType
}{
{"int8", TINT8},
{"int16", TINT16},
{"int32", TINT32},
{"int64", TINT64},
{"uint8", TUINT8},
{"uint16", TUINT16},
{"uint32", TUINT32},
{"uint64", TUINT64},
{"float32", TFLOAT32},
{"float64", TFLOAT64},
{"complex64", TCOMPLEX64},
{"complex128", TCOMPLEX128},
{"bool", TBOOL},
{"string", TSTRING},
{"int8", types.TINT8},
{"int16", types.TINT16},
{"int32", types.TINT32},
{"int64", types.TINT64},
{"uint8", types.TUINT8},
{"uint16", types.TUINT16},
{"uint32", types.TUINT32},
{"uint64", types.TUINT64},
{"float32", types.TFLOAT32},
{"float64", types.TFLOAT64},
{"complex64", types.TCOMPLEX64},
{"complex128", types.TCOMPLEX128},
{"bool", types.TBOOL},
{"string", types.TSTRING},
}
var typedefs = [...]struct {
@ -37,30 +39,30 @@ var typedefs = [...]struct {
sameas32 types.EType
sameas64 types.EType
}{
{"int", TINT, TINT32, TINT64},
{"uint", TUINT, TUINT32, TUINT64},
{"uintptr", TUINTPTR, TUINT32, TUINT64},
{"int", types.TINT, types.TINT32, types.TINT64},
{"uint", types.TUINT, types.TUINT32, types.TUINT64},
{"uintptr", types.TUINTPTR, types.TUINT32, types.TUINT64},
}
var builtinFuncs = [...]struct {
name string
op Op
op ir.Op
}{
{"append", OAPPEND},
{"cap", OCAP},
{"close", OCLOSE},
{"complex", OCOMPLEX},
{"copy", OCOPY},
{"delete", ODELETE},
{"imag", OIMAG},
{"len", OLEN},
{"make", OMAKE},
{"new", ONEW},
{"panic", OPANIC},
{"print", OPRINT},
{"println", OPRINTN},
{"real", OREAL},
{"recover", ORECOVER},
{"append", ir.OAPPEND},
{"cap", ir.OCAP},
{"close", ir.OCLOSE},
{"complex", ir.OCOMPLEX},
{"copy", ir.OCOPY},
{"delete", ir.ODELETE},
{"imag", ir.OIMAG},
{"len", ir.OLEN},
{"make", ir.OMAKE},
{"new", ir.ONEW},
{"panic", ir.OPANIC},
{"print", ir.OPRINT},
{"println", ir.OPRINTN},
{"real", ir.OREAL},
{"recover", ir.ORECOVER},
}
// isBuiltinFuncName reports whether name matches a builtin function
@ -76,11 +78,11 @@ func isBuiltinFuncName(name string) bool {
var unsafeFuncs = [...]struct {
name string
op Op
op ir.Op
}{
{"Alignof", OALIGNOF},
{"Offsetof", OOFFSETOF},
{"Sizeof", OSIZEOF},
{"Alignof", ir.OALIGNOF},
{"Offsetof", ir.OOFFSETOF},
{"Sizeof", ir.OSIZEOF},
}
// initUniverse initializes the universe block.
@ -95,121 +97,117 @@ func lexinit() {
for _, s := range &basicTypes {
etype := s.etype
if int(etype) >= len(types.Types) {
Fatalf("lexinit: %s bad etype", s.name)
base.Fatalf("lexinit: %s bad etype", s.name)
}
s2 := builtinpkg.Lookup(s.name)
s2 := ir.BuiltinPkg.Lookup(s.name)
t := types.Types[etype]
if t == nil {
t = types.New(etype)
t.Sym = s2
if etype != TANY && etype != TSTRING {
if etype != types.TANY && etype != types.TSTRING {
dowidth(t)
}
types.Types[etype] = t
}
s2.Def = asTypesNode(typenod(t))
asNode(s2.Def).Name = new(Name)
s2.Def = typenod(t)
ir.AsNode(s2.Def).SetName(new(ir.Name))
}
for _, s := range &builtinFuncs {
s2 := builtinpkg.Lookup(s.name)
s2.Def = asTypesNode(newname(s2))
asNode(s2.Def).SetSubOp(s.op)
s2 := ir.BuiltinPkg.Lookup(s.name)
s2.Def = NewName(s2)
ir.AsNode(s2.Def).SetSubOp(s.op)
}
for _, s := range &unsafeFuncs {
s2 := unsafepkg.Lookup(s.name)
s2.Def = asTypesNode(newname(s2))
asNode(s2.Def).SetSubOp(s.op)
s2.Def = NewName(s2)
ir.AsNode(s2.Def).SetSubOp(s.op)
}
types.UntypedString = types.New(TSTRING)
types.UntypedBool = types.New(TBOOL)
types.Types[TANY] = types.New(TANY)
types.UntypedString = types.New(types.TSTRING)
types.UntypedBool = types.New(types.TBOOL)
types.Types[types.TANY] = types.New(types.TANY)
s := builtinpkg.Lookup("true")
s.Def = asTypesNode(nodbool(true))
asNode(s.Def).Sym = lookup("true")
asNode(s.Def).Name = new(Name)
asNode(s.Def).Type = types.UntypedBool
s := ir.BuiltinPkg.Lookup("true")
s.Def = nodbool(true)
ir.AsNode(s.Def).SetSym(lookup("true"))
ir.AsNode(s.Def).SetName(new(ir.Name))
ir.AsNode(s.Def).SetType(types.UntypedBool)
s = builtinpkg.Lookup("false")
s.Def = asTypesNode(nodbool(false))
asNode(s.Def).Sym = lookup("false")
asNode(s.Def).Name = new(Name)
asNode(s.Def).Type = types.UntypedBool
s = ir.BuiltinPkg.Lookup("false")
s.Def = nodbool(false)
ir.AsNode(s.Def).SetSym(lookup("false"))
ir.AsNode(s.Def).SetName(new(ir.Name))
ir.AsNode(s.Def).SetType(types.UntypedBool)
s = lookup("_")
s.Block = -100
s.Def = asTypesNode(newname(s))
types.Types[TBLANK] = types.New(TBLANK)
asNode(s.Def).Type = types.Types[TBLANK]
nblank = asNode(s.Def)
s.Def = NewName(s)
types.Types[types.TBLANK] = types.New(types.TBLANK)
ir.AsNode(s.Def).SetType(types.Types[types.TBLANK])
ir.BlankNode = ir.AsNode(s.Def)
s = builtinpkg.Lookup("_")
s = ir.BuiltinPkg.Lookup("_")
s.Block = -100
s.Def = asTypesNode(newname(s))
types.Types[TBLANK] = types.New(TBLANK)
asNode(s.Def).Type = types.Types[TBLANK]
s.Def = NewName(s)
types.Types[types.TBLANK] = types.New(types.TBLANK)
ir.AsNode(s.Def).SetType(types.Types[types.TBLANK])
types.Types[TNIL] = types.New(TNIL)
s = builtinpkg.Lookup("nil")
var v Val
v.U = new(NilVal)
s.Def = asTypesNode(nodlit(v))
asNode(s.Def).Sym = s
asNode(s.Def).Name = new(Name)
types.Types[types.TNIL] = types.New(types.TNIL)
s = ir.BuiltinPkg.Lookup("nil")
s.Def = nodnil()
ir.AsNode(s.Def).SetSym(s)
ir.AsNode(s.Def).SetName(new(ir.Name))
s = builtinpkg.Lookup("iota")
s.Def = asTypesNode(nod(OIOTA, nil, nil))
asNode(s.Def).Sym = s
asNode(s.Def).Name = new(Name)
s = ir.BuiltinPkg.Lookup("iota")
s.Def = ir.Nod(ir.OIOTA, nil, nil)
ir.AsNode(s.Def).SetSym(s)
ir.AsNode(s.Def).SetName(new(ir.Name))
}
func typeinit() {
if Widthptr == 0 {
Fatalf("typeinit before betypeinit")
base.Fatalf("typeinit before betypeinit")
}
for et := types.EType(0); et < NTYPE; et++ {
for et := types.EType(0); et < types.NTYPE; et++ {
simtype[et] = et
}
types.Types[TPTR] = types.New(TPTR)
dowidth(types.Types[TPTR])
types.Types[types.TPTR] = types.New(types.TPTR)
dowidth(types.Types[types.TPTR])
t := types.New(TUNSAFEPTR)
types.Types[TUNSAFEPTR] = t
t := types.New(types.TUNSAFEPTR)
types.Types[types.TUNSAFEPTR] = t
t.Sym = unsafepkg.Lookup("Pointer")
t.Sym.Def = asTypesNode(typenod(t))
asNode(t.Sym.Def).Name = new(Name)
dowidth(types.Types[TUNSAFEPTR])
t.Sym.Def = typenod(t)
ir.AsNode(t.Sym.Def).SetName(new(ir.Name))
dowidth(types.Types[types.TUNSAFEPTR])
for et := TINT8; et <= TUINT64; et++ {
for et := types.TINT8; et <= types.TUINT64; et++ {
isInt[et] = true
}
isInt[TINT] = true
isInt[TUINT] = true
isInt[TUINTPTR] = true
isInt[types.TINT] = true
isInt[types.TUINT] = true
isInt[types.TUINTPTR] = true
isFloat[TFLOAT32] = true
isFloat[TFLOAT64] = true
isFloat[types.TFLOAT32] = true
isFloat[types.TFLOAT64] = true
isComplex[TCOMPLEX64] = true
isComplex[TCOMPLEX128] = true
isComplex[types.TCOMPLEX64] = true
isComplex[types.TCOMPLEX128] = true
// initialize okfor
for et := types.EType(0); et < NTYPE; et++ {
if isInt[et] || et == TIDEAL {
for et := types.EType(0); et < types.NTYPE; et++ {
if isInt[et] || et == types.TIDEAL {
okforeq[et] = true
okforcmp[et] = true
okforarith[et] = true
okforadd[et] = true
okforand[et] = true
okforconst[et] = true
ir.OKForConst[et] = true
issimple[et] = true
minintval[et] = new(Mpint)
maxintval[et] = new(Mpint)
}
if isFloat[et] {
@ -217,53 +215,51 @@ func typeinit() {
okforcmp[et] = true
okforadd[et] = true
okforarith[et] = true
okforconst[et] = true
ir.OKForConst[et] = true
issimple[et] = true
minfltval[et] = newMpflt()
maxfltval[et] = newMpflt()
}
if isComplex[et] {
okforeq[et] = true
okforadd[et] = true
okforarith[et] = true
okforconst[et] = true
ir.OKForConst[et] = true
issimple[et] = true
}
}
issimple[TBOOL] = true
issimple[types.TBOOL] = true
okforadd[TSTRING] = true
okforadd[types.TSTRING] = true
okforbool[TBOOL] = true
okforbool[types.TBOOL] = true
okforcap[TARRAY] = true
okforcap[TCHAN] = true
okforcap[TSLICE] = true
okforcap[types.TARRAY] = true
okforcap[types.TCHAN] = true
okforcap[types.TSLICE] = true
okforconst[TBOOL] = true
okforconst[TSTRING] = true
ir.OKForConst[types.TBOOL] = true
ir.OKForConst[types.TSTRING] = true
okforlen[TARRAY] = true
okforlen[TCHAN] = true
okforlen[TMAP] = true
okforlen[TSLICE] = true
okforlen[TSTRING] = true
okforlen[types.TARRAY] = true
okforlen[types.TCHAN] = true
okforlen[types.TMAP] = true
okforlen[types.TSLICE] = true
okforlen[types.TSTRING] = true
okforeq[TPTR] = true
okforeq[TUNSAFEPTR] = true
okforeq[TINTER] = true
okforeq[TCHAN] = true
okforeq[TSTRING] = true
okforeq[TBOOL] = true
okforeq[TMAP] = true // nil only; refined in typecheck
okforeq[TFUNC] = true // nil only; refined in typecheck
okforeq[TSLICE] = true // nil only; refined in typecheck
okforeq[TARRAY] = true // only if element type is comparable; refined in typecheck
okforeq[TSTRUCT] = true // only if all struct fields are comparable; refined in typecheck
okforeq[types.TPTR] = true
okforeq[types.TUNSAFEPTR] = true
okforeq[types.TINTER] = true
okforeq[types.TCHAN] = true
okforeq[types.TSTRING] = true
okforeq[types.TBOOL] = true
okforeq[types.TMAP] = true // nil only; refined in typecheck
okforeq[types.TFUNC] = true // nil only; refined in typecheck
okforeq[types.TSLICE] = true // nil only; refined in typecheck
okforeq[types.TARRAY] = true // only if element type is comparable; refined in typecheck
okforeq[types.TSTRUCT] = true // only if all struct fields are comparable; refined in typecheck
okforcmp[TSTRING] = true
okforcmp[types.TSTRING] = true
var i int
for i = 0; i < len(okfor); i++ {
@ -271,76 +267,51 @@ func typeinit() {
}
// binary
okfor[OADD] = okforadd[:]
okfor[OAND] = okforand[:]
okfor[OANDAND] = okforbool[:]
okfor[OANDNOT] = okforand[:]
okfor[ODIV] = okforarith[:]
okfor[OEQ] = okforeq[:]
okfor[OGE] = okforcmp[:]
okfor[OGT] = okforcmp[:]
okfor[OLE] = okforcmp[:]
okfor[OLT] = okforcmp[:]
okfor[OMOD] = okforand[:]
okfor[OMUL] = okforarith[:]
okfor[ONE] = okforeq[:]
okfor[OOR] = okforand[:]
okfor[OOROR] = okforbool[:]
okfor[OSUB] = okforarith[:]
okfor[OXOR] = okforand[:]
okfor[OLSH] = okforand[:]
okfor[ORSH] = okforand[:]
okfor[ir.OADD] = okforadd[:]
okfor[ir.OAND] = okforand[:]
okfor[ir.OANDAND] = okforbool[:]
okfor[ir.OANDNOT] = okforand[:]
okfor[ir.ODIV] = okforarith[:]
okfor[ir.OEQ] = okforeq[:]
okfor[ir.OGE] = okforcmp[:]
okfor[ir.OGT] = okforcmp[:]
okfor[ir.OLE] = okforcmp[:]
okfor[ir.OLT] = okforcmp[:]
okfor[ir.OMOD] = okforand[:]
okfor[ir.OMUL] = okforarith[:]
okfor[ir.ONE] = okforeq[:]
okfor[ir.OOR] = okforand[:]
okfor[ir.OOROR] = okforbool[:]
okfor[ir.OSUB] = okforarith[:]
okfor[ir.OXOR] = okforand[:]
okfor[ir.OLSH] = okforand[:]
okfor[ir.ORSH] = okforand[:]
// unary
okfor[OBITNOT] = okforand[:]
okfor[ONEG] = okforarith[:]
okfor[ONOT] = okforbool[:]
okfor[OPLUS] = okforarith[:]
okfor[ir.OBITNOT] = okforand[:]
okfor[ir.ONEG] = okforarith[:]
okfor[ir.ONOT] = okforbool[:]
okfor[ir.OPLUS] = okforarith[:]
// special
okfor[OCAP] = okforcap[:]
okfor[OLEN] = okforlen[:]
okfor[ir.OCAP] = okforcap[:]
okfor[ir.OLEN] = okforlen[:]
// comparison
iscmp[OLT] = true
iscmp[OGT] = true
iscmp[OGE] = true
iscmp[OLE] = true
iscmp[OEQ] = true
iscmp[ONE] = true
iscmp[ir.OLT] = true
iscmp[ir.OGT] = true
iscmp[ir.OGE] = true
iscmp[ir.OLE] = true
iscmp[ir.OEQ] = true
iscmp[ir.ONE] = true
maxintval[TINT8].SetString("0x7f")
minintval[TINT8].SetString("-0x80")
maxintval[TINT16].SetString("0x7fff")
minintval[TINT16].SetString("-0x8000")
maxintval[TINT32].SetString("0x7fffffff")
minintval[TINT32].SetString("-0x80000000")
maxintval[TINT64].SetString("0x7fffffffffffffff")
minintval[TINT64].SetString("-0x8000000000000000")
maxintval[TUINT8].SetString("0xff")
maxintval[TUINT16].SetString("0xffff")
maxintval[TUINT32].SetString("0xffffffff")
maxintval[TUINT64].SetString("0xffffffffffffffff")
// f is valid float if min < f < max. (min and max are not themselves valid.)
maxfltval[TFLOAT32].SetString("33554431p103") // 2^24-1 p (127-23) + 1/2 ulp
minfltval[TFLOAT32].SetString("-33554431p103")
maxfltval[TFLOAT64].SetString("18014398509481983p970") // 2^53-1 p (1023-52) + 1/2 ulp
minfltval[TFLOAT64].SetString("-18014398509481983p970")
maxfltval[TCOMPLEX64] = maxfltval[TFLOAT32]
minfltval[TCOMPLEX64] = minfltval[TFLOAT32]
maxfltval[TCOMPLEX128] = maxfltval[TFLOAT64]
minfltval[TCOMPLEX128] = minfltval[TFLOAT64]
types.Types[TINTER] = types.New(TINTER) // empty interface
types.Types[types.TINTER] = types.New(types.TINTER) // empty interface
// simple aliases
simtype[TMAP] = TPTR
simtype[TCHAN] = TPTR
simtype[TFUNC] = TPTR
simtype[TUNSAFEPTR] = TPTR
simtype[types.TMAP] = types.TPTR
simtype[types.TCHAN] = types.TPTR
simtype[types.TFUNC] = types.TPTR
simtype[types.TUNSAFEPTR] = types.TPTR
slicePtrOffset = 0
sliceLenOffset = Rnd(slicePtrOffset+int64(Widthptr), int64(Widthptr))
@ -350,31 +321,29 @@ func typeinit() {
// string is same as slice wo the cap
sizeofString = Rnd(sliceLenOffset+int64(Widthptr), int64(Widthptr))
dowidth(types.Types[TSTRING])
dowidth(types.Types[types.TSTRING])
dowidth(types.UntypedString)
}
func makeErrorInterface() *types.Type {
field := types.NewField()
field.Type = types.Types[TSTRING]
f := functypefield(fakeRecvField(), nil, []*types.Field{field})
sig := functypefield(fakeRecvField(), nil, []*types.Field{
types.NewField(src.NoXPos, nil, types.Types[types.TSTRING]),
})
field = types.NewField()
field.Sym = lookup("Error")
field.Type = f
method := types.NewField(src.NoXPos, lookup("Error"), sig)
t := types.New(TINTER)
t.SetInterface([]*types.Field{field})
t := types.New(types.TINTER)
t.SetInterface([]*types.Field{method})
return t
}
func lexinit1() {
// error type
s := builtinpkg.Lookup("error")
s := ir.BuiltinPkg.Lookup("error")
types.Errortype = makeErrorInterface()
types.Errortype.Sym = s
types.Errortype.Orig = makeErrorInterface()
s.Def = asTypesNode(typenod(types.Errortype))
s.Def = typenod(types.Errortype)
dowidth(types.Errortype)
// We create separate byte and rune types for better error messages
@ -386,24 +355,24 @@ func lexinit1() {
// type aliases, albeit at the cost of having to deal with it everywhere).
// byte alias
s = builtinpkg.Lookup("byte")
types.Bytetype = types.New(TUINT8)
s = ir.BuiltinPkg.Lookup("byte")
types.Bytetype = types.New(types.TUINT8)
types.Bytetype.Sym = s
s.Def = asTypesNode(typenod(types.Bytetype))
asNode(s.Def).Name = new(Name)
s.Def = typenod(types.Bytetype)
ir.AsNode(s.Def).SetName(new(ir.Name))
dowidth(types.Bytetype)
// rune alias
s = builtinpkg.Lookup("rune")
types.Runetype = types.New(TINT32)
s = ir.BuiltinPkg.Lookup("rune")
types.Runetype = types.New(types.TINT32)
types.Runetype.Sym = s
s.Def = asTypesNode(typenod(types.Runetype))
asNode(s.Def).Name = new(Name)
s.Def = typenod(types.Runetype)
ir.AsNode(s.Def).SetName(new(ir.Name))
dowidth(types.Runetype)
// backend-dependent builtin types (e.g. int).
for _, s := range &typedefs {
s1 := builtinpkg.Lookup(s.name)
s1 := ir.BuiltinPkg.Lookup(s.name)
sameas := s.sameas32
if Widthptr == 8 {
@ -411,17 +380,13 @@ func lexinit1() {
}
simtype[s.etype] = sameas
minfltval[s.etype] = minfltval[sameas]
maxfltval[s.etype] = maxfltval[sameas]
minintval[s.etype] = minintval[sameas]
maxintval[s.etype] = maxintval[sameas]
t := types.New(s.etype)
t.Sym = s1
types.Types[s.etype] = t
s1.Def = asTypesNode(typenod(t))
asNode(s1.Def).Name = new(Name)
s1.Origpkg = builtinpkg
s1.Def = typenod(t)
ir.AsNode(s1.Def).SetName(new(ir.Name))
s1.Origpkg = ir.BuiltinPkg
dowidth(t)
}
@ -433,7 +398,7 @@ func finishUniverse() {
// that we silently skip symbols that are already declared in the
// package block rather than emitting a redeclared symbol error.
for _, s := range builtinpkg.Syms {
for _, s := range ir.BuiltinPkg.Syms {
if s.Def == nil {
continue
}
@ -446,8 +411,8 @@ func finishUniverse() {
s1.Block = s.Block
}
nodfp = newname(lookup(".fp"))
nodfp.Type = types.Types[TINT32]
nodfp.SetClass(PPARAM)
nodfp.Name.SetUsed(true)
nodfp = NewName(lookup(".fp"))
nodfp.SetType(types.Types[types.TINT32])
nodfp.SetClass(ir.PPARAM)
nodfp.Name().SetUsed(true)
}

65
src/cmd/compile/internal/gc/unsafe.go
View file

@ -4,73 +4,78 @@
package gc
import (
"cmd/compile/internal/base"
"cmd/compile/internal/ir"
)
// evalunsafe evaluates a package unsafe operation and returns the result.
func evalunsafe(n *Node) int64 {
switch n.Op {
case OALIGNOF, OSIZEOF:
n.Left = typecheck(n.Left, ctxExpr)
n.Left = defaultlit(n.Left, nil)
tr := n.Left.Type
func evalunsafe(n ir.Node) int64 {
switch n.Op() {
case ir.OALIGNOF, ir.OSIZEOF:
n.SetLeft(typecheck(n.Left(), ctxExpr))
n.SetLeft(defaultlit(n.Left(), nil))
tr := n.Left().Type()
if tr == nil {
return 0
}
dowidth(tr)
if n.Op == OALIGNOF {
if n.Op() == ir.OALIGNOF {
return int64(tr.Align)
}
return tr.Width
case OOFFSETOF:
case ir.OOFFSETOF:
// must be a selector.
if n.Left.Op != OXDOT {
yyerror("invalid expression %v", n)
if n.Left().Op() != ir.OXDOT {
base.Errorf("invalid expression %v", n)
return 0
}
// Remember base of selector to find it back after dot insertion.
// Since r->left may be mutated by typechecking, check it explicitly
// first to track it correctly.
n.Left.Left = typecheck(n.Left.Left, ctxExpr)
base := n.Left.Left
n.Left().SetLeft(typecheck(n.Left().Left(), ctxExpr))
sbase := n.Left().Left()
n.Left = typecheck(n.Left, ctxExpr)
if n.Left.Type == nil {
n.SetLeft(typecheck(n.Left(), ctxExpr))
if n.Left().Type() == nil {
return 0
}
switch n.Left.Op {
case ODOT, ODOTPTR:
switch n.Left().Op() {
case ir.ODOT, ir.ODOTPTR:
break
case OCALLPART:
yyerror("invalid expression %v: argument is a method value", n)
case ir.OCALLPART:
base.Errorf("invalid expression %v: argument is a method value", n)
return 0
default:
yyerror("invalid expression %v", n)
base.Errorf("invalid expression %v", n)
return 0
}
// Sum offsets for dots until we reach base.
// Sum offsets for dots until we reach sbase.
var v int64
for r := n.Left; r != base; r = r.Left {
switch r.Op {
case ODOTPTR:
for r := n.Left(); r != sbase; r = r.Left() {
switch r.Op() {
case ir.ODOTPTR:
// For Offsetof(s.f), s may itself be a pointer,
// but accessing f must not otherwise involve
// indirection via embedded pointer types.
if r.Left != base {
yyerror("invalid expression %v: selector implies indirection of embedded %v", n, r.Left)
if r.Left() != sbase {
base.Errorf("invalid expression %v: selector implies indirection of embedded %v", n, r.Left())
return 0
}
fallthrough
case ODOT:
v += r.Xoffset
case ir.ODOT:
v += r.Offset()
default:
Dump("unsafenmagic", n.Left)
Fatalf("impossible %#v node after dot insertion", r.Op)
ir.Dump("unsafenmagic", n.Left())
base.Fatalf("impossible %#v node after dot insertion", r.Op())
}
}
return v
}
Fatalf("unexpected op %v", n.Op)
base.Fatalf("unexpected op %v", n.Op())
return 0
}

68
src/cmd/compile/internal/gc/util.go
View file

@ -8,59 +8,35 @@ import (
"os"
"runtime"
"runtime/pprof"
"cmd/compile/internal/base"
)
// Line returns n's position as a string. If n has been inlined,
// it uses the outermost position where n has been inlined.
func (n *Node) Line() string {
return linestr(n.Pos)
}
var atExitFuncs []func()
func atExit(f func()) {
atExitFuncs = append(atExitFuncs, f)
}
func Exit(code int) {
for i := len(atExitFuncs) - 1; i >= 0; i-- {
f := atExitFuncs[i]
atExitFuncs = atExitFuncs[:i]
f()
}
os.Exit(code)
}
var (
blockprofile string
cpuprofile string
memprofile string
memprofilerate int64
traceprofile string
traceHandler func(string)
mutexprofile string
)
func startProfile() {
if cpuprofile != "" {
f, err := os.Create(cpuprofile)
if base.Flag.CPUProfile != "" {
f, err := os.Create(base.Flag.CPUProfile)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
if err := pprof.StartCPUProfile(f); err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
atExit(pprof.StopCPUProfile)
base.AtExit(pprof.StopCPUProfile)
}
if memprofile != "" {
if base.Flag.MemProfile != "" {
if memprofilerate != 0 {
runtime.MemProfileRate = int(memprofilerate)
}
f, err := os.Create(memprofile)
f, err := os.Create(base.Flag.MemProfile)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
atExit(func() {
base.AtExit(func() {
// Profile all outstanding allocations.
runtime.GC()
// compilebench parses the memory profile to extract memstats,
@ -68,36 +44,36 @@ func startProfile() {
// See golang.org/issue/18641 and runtime/pprof/pprof.go:writeHeap.
const writeLegacyFormat = 1
if err := pprof.Lookup("heap").WriteTo(f, writeLegacyFormat); err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
})
} else {
// Not doing memory profiling; disable it entirely.
runtime.MemProfileRate = 0
}
if blockprofile != "" {
f, err := os.Create(blockprofile)
if base.Flag.BlockProfile != "" {
f, err := os.Create(base.Flag.BlockProfile)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
runtime.SetBlockProfileRate(1)
atExit(func() {
base.AtExit(func() {
pprof.Lookup("block").WriteTo(f, 0)
f.Close()
})
}
if mutexprofile != "" {
f, err := os.Create(mutexprofile)
if base.Flag.MutexProfile != "" {
f, err := os.Create(base.Flag.MutexProfile)
if err != nil {
Fatalf("%v", err)
base.Fatalf("%v", err)
}
startMutexProfiling()
atExit(func() {
base.AtExit(func() {
pprof.Lookup("mutex").WriteTo(f, 0)
f.Close()
})
}
if traceprofile != "" && traceHandler != nil {
traceHandler(traceprofile)
if base.Flag.TraceProfile != "" && traceHandler != nil {
traceHandler(base.Flag.TraceProfile)
}
}

2735
src/cmd/compile/internal/gc/walk.go
View file

File diff suppressed because it is too large Load diff

2
src/cmd/compile/internal/gc/bitset.go → src/cmd/compile/internal/ir/bitset.go
View file

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
package ir
type bitset8 uint8

2
src/cmd/compile/internal/gc/class_string.go → src/cmd/compile/internal/ir/class_string.go
View file

@ -1,6 +1,6 @@
// Code generated by "stringer -type=Class"; DO NOT EDIT.
package gc
package ir
import "strconv"

23
src/cmd/compile/internal/gc/dump.go → src/cmd/compile/internal/ir/dump.go
View file

@ -6,21 +6,23 @@
// for debugging purposes. The code is customized for Node graphs
// and may be used for an alternative view of the node structure.
package gc
package ir
import (
"cmd/compile/internal/types"
"cmd/internal/src"
"fmt"
"io"
"os"
"reflect"
"regexp"
"cmd/compile/internal/base"
"cmd/compile/internal/types"
"cmd/internal/src"
)
// dump is like fdump but prints to stderr.
func dump(root interface{}, filter string, depth int) {
fdump(os.Stderr, root, filter, depth)
func DumpAny(root interface{}, filter string, depth int) {
FDumpAny(os.Stderr, root, filter, depth)
}
// fdump prints the structure of a rooted data structure
@ -40,7 +42,7 @@ func dump(root interface{}, filter string, depth int) {
// rather than their type; struct fields with zero values or
// non-matching field names are omitted, and "…" means recursion
// depth has been reached or struct fields have been omitted.
func fdump(w io.Writer, root interface{}, filter string, depth int) {
func FDumpAny(w io.Writer, root interface{}, filter string, depth int) {
if root == nil {
fmt.Fprintln(w, "nil")
return
@ -146,11 +148,8 @@ func (p *dumper) dump(x reflect.Value, depth int) {
x = reflect.ValueOf(v.Slice())
case src.XPos:
p.printf("%s", linestr(v))
p.printf("%s", base.FmtPos(v))
return
case *types.Node:
x = reflect.ValueOf(asNode(v))
}
switch x.Kind() {
@ -201,9 +200,9 @@ func (p *dumper) dump(x reflect.Value, depth int) {
typ := x.Type()
isNode := false
if n, ok := x.Interface().(Node); ok {
if n, ok := x.Interface().(node); ok {
isNode = true
p.printf("%s %s {", n.Op.String(), p.addr(x))
p.printf("%s %s {", n.op.String(), p.addr(x))
} else {
p.printf("%s {", typ)
}

956
src/cmd/compile/internal/gc/fmt.go → src/cmd/compile/internal/ir/fmt.go
View file

File diff suppressed because it is too large Load diff

12
src/cmd/compile/internal/ir/ir.go Normal file
View file

@ -0,0 +1,12 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ir
import "cmd/compile/internal/types"
var LocalPkg *types.Pkg // package being compiled
// builtinpkg is a fake package that declares the universe block.
var BuiltinPkg *types.Pkg

944
src/cmd/compile/internal/gc/syntax.go → src/cmd/compile/internal/ir/node.go
View file

File diff suppressed because it is too large Load diff

177
src/cmd/compile/internal/ir/op_string.go Normal file
View file

@ -0,0 +1,177 @@
// Code generated by "stringer -type=Op -trimprefix=O"; DO NOT EDIT.
package ir
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[OXXX-0]
_ = x[ONAME-1]
_ = x[ONONAME-2]
_ = x[OTYPE-3]
_ = x[OPACK-4]
_ = x[OLITERAL-5]
_ = x[ONIL-6]
_ = x[OADD-7]
_ = x[OSUB-8]
_ = x[OOR-9]
_ = x[OXOR-10]
_ = x[OADDSTR-11]
_ = x[OADDR-12]
_ = x[OANDAND-13]
_ = x[OAPPEND-14]
_ = x[OBYTES2STR-15]
_ = x[OBYTES2STRTMP-16]
_ = x[ORUNES2STR-17]
_ = x[OSTR2BYTES-18]
_ = x[OSTR2BYTESTMP-19]
_ = x[OSTR2RUNES-20]
_ = x[OAS-21]
_ = x[OAS2-22]
_ = x[OAS2DOTTYPE-23]
_ = x[OAS2FUNC-24]
_ = x[OAS2MAPR-25]
_ = x[OAS2RECV-26]
_ = x[OASOP-27]
_ = x[OCALL-28]
_ = x[OCALLFUNC-29]
_ = x[OCALLMETH-30]
_ = x[OCALLINTER-31]
_ = x[OCALLPART-32]
_ = x[OCAP-33]
_ = x[OCLOSE-34]
_ = x[OCLOSURE-35]
_ = x[OCOMPLIT-36]
_ = x[OMAPLIT-37]
_ = x[OSTRUCTLIT-38]
_ = x[OARRAYLIT-39]
_ = x[OSLICELIT-40]
_ = x[OPTRLIT-41]
_ = x[OCONV-42]
_ = x[OCONVIFACE-43]
_ = x[OCONVNOP-44]
_ = x[OCOPY-45]
_ = x[ODCL-46]
_ = x[ODCLFUNC-47]
_ = x[ODCLFIELD-48]
_ = x[ODCLCONST-49]
_ = x[ODCLTYPE-50]
_ = x[ODELETE-51]
_ = x[ODOT-52]
_ = x[ODOTPTR-53]
_ = x[ODOTMETH-54]
_ = x[ODOTINTER-55]
_ = x[OXDOT-56]
_ = x[ODOTTYPE-57]
_ = x[ODOTTYPE2-58]
_ = x[OEQ-59]
_ = x[ONE-60]
_ = x[OLT-61]
_ = x[OLE-62]
_ = x[OGE-63]
_ = x[OGT-64]
_ = x[ODEREF-65]
_ = x[OINDEX-66]
_ = x[OINDEXMAP-67]
_ = x[OKEY-68]
_ = x[OSTRUCTKEY-69]
_ = x[OLEN-70]
_ = x[OMAKE-71]
_ = x[OMAKECHAN-72]
_ = x[OMAKEMAP-73]
_ = x[OMAKESLICE-74]
_ = x[OMAKESLICECOPY-75]
_ = x[OMUL-76]
_ = x[ODIV-77]
_ = x[OMOD-78]
_ = x[OLSH-79]
_ = x[ORSH-80]
_ = x[OAND-81]
_ = x[OANDNOT-82]
_ = x[ONEW-83]
_ = x[ONEWOBJ-84]
_ = x[ONOT-85]
_ = x[OBITNOT-86]
_ = x[OPLUS-87]
_ = x[ONEG-88]
_ = x[OOROR-89]
_ = x[OPANIC-90]
_ = x[OPRINT-91]
_ = x[OPRINTN-92]
_ = x[OPAREN-93]
_ = x[OSEND-94]
_ = x[OSLICE-95]
_ = x[OSLICEARR-96]
_ = x[OSLICESTR-97]
_ = x[OSLICE3-98]
_ = x[OSLICE3ARR-99]
_ = x[OSLICEHEADER-100]
_ = x[ORECOVER-101]
_ = x[ORECV-102]
_ = x[ORUNESTR-103]
_ = x[OSELRECV-104]
_ = x[OSELRECV2-105]
_ = x[OIOTA-106]
_ = x[OREAL-107]
_ = x[OIMAG-108]
_ = x[OCOMPLEX-109]
_ = x[OALIGNOF-110]
_ = x[OOFFSETOF-111]
_ = x[OSIZEOF-112]
_ = x[OMETHEXPR-113]
_ = x[OBLOCK-114]
_ = x[OBREAK-115]
_ = x[OCASE-116]
_ = x[OCONTINUE-117]
_ = x[ODEFER-118]
_ = x[OEMPTY-119]
_ = x[OFALL-120]
_ = x[OFOR-121]
_ = x[OFORUNTIL-122]
_ = x[OGOTO-123]
_ = x[OIF-124]
_ = x[OLABEL-125]
_ = x[OGO-126]
_ = x[ORANGE-127]
_ = x[ORETURN-128]
_ = x[OSELECT-129]
_ = x[OSWITCH-130]
_ = x[OTYPESW-131]
_ = x[OTCHAN-132]
_ = x[OTMAP-133]
_ = x[OTSTRUCT-134]
_ = x[OTINTER-135]
_ = x[OTFUNC-136]
_ = x[OTARRAY-137]
_ = x[ODDD-138]
_ = x[OINLCALL-139]
_ = x[OEFACE-140]
_ = x[OITAB-141]
_ = x[OIDATA-142]
_ = x[OSPTR-143]
_ = x[OCLOSUREVAR-144]
_ = x[OCFUNC-145]
_ = x[OCHECKNIL-146]
_ = x[OVARDEF-147]
_ = x[OVARKILL-148]
_ = x[OVARLIVE-149]
_ = x[ORESULT-150]
_ = x[OINLMARK-151]
_ = x[ORETJMP-152]
_ = x[OGETG-153]
_ = x[OEND-154]
}
const _Op_name = "XXXNAMENONAMETYPEPACKLITERALNILADDSUBORXORADDSTRADDRANDANDAPPENDBYTES2STRBYTES2STRTMPRUNES2STRSTR2BYTESSTR2BYTESTMPSTR2RUNESASAS2AS2DOTTYPEAS2FUNCAS2MAPRAS2RECVASOPCALLCALLFUNCCALLMETHCALLINTERCALLPARTCAPCLOSECLOSURECOMPLITMAPLITSTRUCTLITARRAYLITSLICELITPTRLITCONVCONVIFACECONVNOPCOPYDCLDCLFUNCDCLFIELDDCLCONSTDCLTYPEDELETEDOTDOTPTRDOTMETHDOTINTERXDOTDOTTYPEDOTTYPE2EQNELTLEGEGTDEREFINDEXINDEXMAPKEYSTRUCTKEYLENMAKEMAKECHANMAKEMAPMAKESLICEMAKESLICECOPYMULDIVMODLSHRSHANDANDNOTNEWNEWOBJNOTBITNOTPLUSNEGORORPANICPRINTPRINTNPARENSENDSLICESLICEARRSLICESTRSLICE3SLICE3ARRSLICEHEADERRECOVERRECVRUNESTRSELRECVSELRECV2IOTAREALIMAGCOMPLEXALIGNOFOFFSETOFSIZEOFMETHEXPRBLOCKBREAKCASECONTINUEDEFEREMPTYFALLFORFORUNTILGOTOIFLABELGORANGERETURNSELECTSWITCHTYPESWTCHANTMAPTSTRUCTTINTERTFUNCTARRAYDDDINLCALLEFACEITABIDATASPTRCLOSUREVARCFUNCCHECKNILVARDEFVARKILLVARLIVERESULTINLMARKRETJMPGETGEND"
var _Op_index = [...]uint16{0, 3, 7, 13, 17, 21, 28, 31, 34, 37, 39, 42, 48, 52, 58, 64, 73, 85, 94, 103, 115, 124, 126, 129, 139, 146, 153, 160, 164, 168, 176, 184, 193, 201, 204, 209, 216, 223, 229, 238, 246, 254, 260, 264, 273, 280, 284, 287, 294, 302, 310, 317, 323, 326, 332, 339, 347, 351, 358, 366, 368, 370, 372, 374, 376, 378, 383, 388, 396, 399, 408, 411, 415, 423, 430, 439, 452, 455, 458, 461, 464, 467, 470, 476, 479, 485, 488, 494, 498, 501, 505, 510, 515, 521, 526, 530, 535, 543, 551, 557, 566, 577, 584, 588, 595, 602, 610, 614, 618, 622, 629, 636, 644, 650, 658, 663, 668, 672, 680, 685, 690, 694, 697, 705, 709, 711, 716, 718, 723, 729, 735, 741, 747, 752, 756, 763, 769, 774, 780, 783, 790, 795, 799, 804, 808, 818, 823, 831, 837, 844, 851, 857, 864, 870, 874, 877}
func (i Op) String() string {
if i >= Op(len(_Op_index)-1) {
return "Op(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Op_name[_Op_index[i]:_Op_index[i+1]]
}

10
src/cmd/compile/internal/gc/sizeof_test.go → src/cmd/compile/internal/ir/sizeof_test.go
View file

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gc
package ir
import (
"reflect"
@ -20,10 +20,10 @@ func TestSizeof(t *testing.T) {
_32bit uintptr // size on 32bit platforms
_64bit uintptr // size on 64bit platforms
}{
{Func{}, 124, 224},
{Name{}, 32, 56},
{Param{}, 24, 48},
{Node{}, 76, 128},
{Func{}, 152, 280},
{Name{}, 44, 80},
{Param{}, 44, 88},
{node{}, 88, 152},
}
for _, tt := range tests {

120
src/cmd/compile/internal/ir/val.go Normal file
View file

@ -0,0 +1,120 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ir
import (
"go/constant"
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/types"
)
func ConstType(n Node) constant.Kind {
if n == nil || n.Op() != OLITERAL {
return constant.Unknown
}
return n.Val().Kind()
}
// ValueInterface returns the constant value stored in n as an interface{}.
// It returns int64s for ints and runes, float64s for floats,
// and complex128s for complex values.
func ConstValue(n Node) interface{} {
switch v := n.Val(); v.Kind() {
default:
base.Fatalf("unexpected constant: %v", v)
panic("unreachable")
case constant.Bool:
return constant.BoolVal(v)
case constant.String:
return constant.StringVal(v)
case constant.Int:
return Int64Val(n.Type(), v)
case constant.Float:
return Float64Val(v)
case constant.Complex:
return complex(Float64Val(constant.Real(v)), Float64Val(constant.Imag(v)))
}
}
// int64Val returns v converted to int64.
// Note: if t is uint64, very large values will be converted to negative int64.
func Int64Val(t *types.Type, v constant.Value) int64 {
if t.IsUnsigned() {
if x, ok := constant.Uint64Val(v); ok {
return int64(x)
}
} else {
if x, ok := constant.Int64Val(v); ok {
return x
}
}
base.Fatalf("%v out of range for %v", v, t)
panic("unreachable")
}
func Float64Val(v constant.Value) float64 {
if x, _ := constant.Float64Val(v); !math.IsInf(x, 0) {
return x + 0 // avoid -0 (should not be needed, but be conservative)
}
base.Fatalf("bad float64 value: %v", v)
panic("unreachable")
}
func AssertValidTypeForConst(t *types.Type, v constant.Value) {
if !ValidTypeForConst(t, v) {
base.Fatalf("%v does not represent %v", t, v)
}
}
func ValidTypeForConst(t *types.Type, v constant.Value) bool {
switch v.Kind() {
case constant.Unknown:
return OKForConst[t.Etype]
case constant.Bool:
return t.IsBoolean()
case constant.String:
return t.IsString()
case constant.Int:
return t.IsInteger()
case constant.Float:
return t.IsFloat()
case constant.Complex:
return t.IsComplex()
}
base.Fatalf("unexpected constant kind: %v", v)
panic("unreachable")
}
// nodlit returns a new untyped constant with value v.
func NewLiteral(v constant.Value) Node {
n := Nod(OLITERAL, nil, nil)
if k := v.Kind(); k != constant.Unknown {
n.SetType(idealType(k))
n.SetVal(v)
}
return n
}
func idealType(ct constant.Kind) *types.Type {
switch ct {
case constant.String:
return types.UntypedString
case constant.Bool:
return types.UntypedBool
case constant.Int:
return types.UntypedInt
case constant.Float:
return types.UntypedFloat
case constant.Complex:
return types.UntypedComplex
}
base.Fatalf("unexpected Ctype: %v", ct)
return nil
}
var OKForConst [types.NTYPE]bool

5
src/cmd/compile/internal/mips/ggen.go
View file

@ -5,6 +5,7 @@
package mips
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/mips"
@ -18,7 +19,7 @@ func zerorange(pp *gc.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
}
if cnt < int64(4*gc.Widthptr) {
for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
p = pp.Appendpp(p, mips.AMOVW, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGSP, gc.Ctxt.FixedFrameSize()+off+i)
p = pp.Appendpp(p, mips.AMOVW, obj.TYPE_REG, mips.REGZERO, 0, obj.TYPE_MEM, mips.REGSP, base.Ctxt.FixedFrameSize()+off+i)
}
} else {
//fmt.Printf("zerorange frame:%v, lo: %v, hi:%v \n", frame ,lo, hi)
@ -28,7 +29,7 @@ func zerorange(pp *gc.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
// MOVW R0, (Widthptr)r1
// ADD $Widthptr, r1
// BNE r1, r2, loop
p = pp.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, gc.Ctxt.FixedFrameSize()+off-4, obj.TYPE_REG, mips.REGRT1, 0)
p = pp.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, base.Ctxt.FixedFrameSize()+off-4, obj.TYPE_REG, mips.REGRT1, 0)
p.Reg = mips.REGSP
p = pp.Appendpp(p, mips.AADD, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, mips.REGRT2, 0)
p.Reg = mips.REGRT1

10
src/cmd/compile/internal/mips/ssa.go
View file

@ -7,7 +7,9 @@ package mips
import (
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
@ -287,7 +289,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case *obj.LSym:
wantreg = "SB"
gc.AddAux(&p.From, v)
case *gc.Node:
case ir.Node:
wantreg = "SP"
gc.AddAux(&p.From, v)
case nil:
@ -766,8 +768,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpMIPSFPFlagTrue,
ssa.OpMIPSFPFlagFalse:
@ -796,7 +798,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(mips.AMOVW)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()

10
src/cmd/compile/internal/mips64/ssa.go
View file

@ -7,7 +7,9 @@ package mips64
import (
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
@ -261,7 +263,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case *obj.LSym:
wantreg = "SB"
gc.AddAux(&p.From, v)
case *gc.Node:
case ir.Node:
wantreg = "SP"
gc.AddAux(&p.From, v)
case nil:
@ -724,8 +726,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpMIPS64FPFlagTrue,
ssa.OpMIPS64FPFlagFalse:
@ -757,7 +759,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(mips.AMOVV)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()

9
src/cmd/compile/internal/ppc64/ggen.go
View file

@ -5,6 +5,7 @@
package ppc64
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/ppc64"
@ -16,17 +17,17 @@ func zerorange(pp *gc.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
}
if cnt < int64(4*gc.Widthptr) {
for i := int64(0); i < cnt; i += int64(gc.Widthptr) {
p = pp.Appendpp(p, ppc64.AMOVD, obj.TYPE_REG, ppc64.REGZERO, 0, obj.TYPE_MEM, ppc64.REGSP, gc.Ctxt.FixedFrameSize()+off+i)
p = pp.Appendpp(p, ppc64.AMOVD, obj.TYPE_REG, ppc64.REGZERO, 0, obj.TYPE_MEM, ppc64.REGSP, base.Ctxt.FixedFrameSize()+off+i)
}
} else if cnt <= int64(128*gc.Widthptr) {
p = pp.Appendpp(p, ppc64.AADD, obj.TYPE_CONST, 0, gc.Ctxt.FixedFrameSize()+off-8, obj.TYPE_REG, ppc64.REGRT1, 0)
p = pp.Appendpp(p, ppc64.AADD, obj.TYPE_CONST, 0, base.Ctxt.FixedFrameSize()+off-8, obj.TYPE_REG, ppc64.REGRT1, 0)
p.Reg = ppc64.REGSP
p = pp.Appendpp(p, obj.ADUFFZERO, obj.TYPE_NONE, 0, 0, obj.TYPE_MEM, 0, 0)
p.To.Name = obj.NAME_EXTERN
p.To.Sym = gc.Duffzero
p.To.Offset = 4 * (128 - cnt/int64(gc.Widthptr))
} else {
p = pp.Appendpp(p, ppc64.AMOVD, obj.TYPE_CONST, 0, gc.Ctxt.FixedFrameSize()+off-8, obj.TYPE_REG, ppc64.REGTMP, 0)
p = pp.Appendpp(p, ppc64.AMOVD, obj.TYPE_CONST, 0, base.Ctxt.FixedFrameSize()+off-8, obj.TYPE_REG, ppc64.REGTMP, 0)
p = pp.Appendpp(p, ppc64.AADD, obj.TYPE_REG, ppc64.REGTMP, 0, obj.TYPE_REG, ppc64.REGRT1, 0)
p.Reg = ppc64.REGSP
p = pp.Appendpp(p, ppc64.AMOVD, obj.TYPE_CONST, 0, cnt, obj.TYPE_REG, ppc64.REGTMP, 0)
@ -66,7 +67,7 @@ func ginsnopdefer(pp *gc.Progs) *obj.Prog {
// on ppc64 in both shared and non-shared modes.
ginsnop(pp)
if gc.Ctxt.Flag_shared {
if base.Ctxt.Flag_shared {
p := pp.Prog(ppc64.AMOVD)
p.From.Type = obj.TYPE_MEM
p.From.Offset = 24

12
src/cmd/compile/internal/ppc64/ssa.go
View file

@ -5,7 +5,9 @@
package ppc64
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
@ -473,7 +475,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(ppc64.AMOVD)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
@ -750,7 +752,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p.To.Reg = v.Reg()
}
case *obj.LSym, *gc.Node:
case *obj.LSym, ir.Node:
p := s.Prog(ppc64.AMOVD)
p.From.Type = obj.TYPE_ADDR
p.From.Reg = v.Args[0].Reg()
@ -1784,7 +1786,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// Insert a hint this is not a subroutine return.
pp.SetFrom3(obj.Addr{Type: obj.TYPE_CONST, Offset: 1})
if gc.Ctxt.Flag_shared {
if base.Ctxt.Flag_shared {
// When compiling Go into PIC, the function we just
// called via pointer might have been implemented in
// a separate module and so overwritten the TOC
@ -1852,8 +1854,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
// These should be resolved by rules and not make it here.

3
src/cmd/compile/internal/riscv64/ggen.go
View file

@ -5,6 +5,7 @@
package riscv64
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/riscv"
@ -16,7 +17,7 @@ func zeroRange(pp *gc.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
}
// Adjust the frame to account for LR.
off += gc.Ctxt.FixedFrameSize()
off += base.Ctxt.FixedFrameSize()
if cnt < int64(4*gc.Widthptr) {
for i := int64(0); i < cnt; i += int64(gc.Widthptr) {

18
src/cmd/compile/internal/riscv64/ssa.go
View file

@ -5,7 +5,9 @@
package riscv64
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/ir"
"cmd/compile/internal/ssa"
"cmd/compile/internal/types"
"cmd/internal/obj"
@ -91,7 +93,7 @@ func loadByType(t *types.Type) obj.As {
case 8:
return riscv.AMOVD
default:
gc.Fatalf("unknown float width for load %d in type %v", width, t)
base.Fatalf("unknown float width for load %d in type %v", width, t)
return 0
}
}
@ -118,7 +120,7 @@ func loadByType(t *types.Type) obj.As {
case 8:
return riscv.AMOV
default:
gc.Fatalf("unknown width for load %d in type %v", width, t)
base.Fatalf("unknown width for load %d in type %v", width, t)
return 0
}
}
@ -134,7 +136,7 @@ func storeByType(t *types.Type) obj.As {
case 8:
return riscv.AMOVD
default:
gc.Fatalf("unknown float width for store %d in type %v", width, t)
base.Fatalf("unknown float width for store %d in type %v", width, t)
return 0
}
}
@ -149,7 +151,7 @@ func storeByType(t *types.Type) obj.As {
case 8:
return riscv.AMOV
default:
gc.Fatalf("unknown width for store %d in type %v", width, t)
base.Fatalf("unknown width for store %d in type %v", width, t)
return 0
}
}
@ -322,7 +324,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
case *obj.LSym:
wantreg = "SB"
gc.AddAux(&p.From, v)
case *gc.Node:
case ir.Node:
wantreg = "SP"
gc.AddAux(&p.From, v)
case nil:
@ -586,8 +588,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
gc.AddAux(&p.From, v)
p.To.Type = obj.TYPE_REG
p.To.Reg = riscv.REG_ZERO
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos == 1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos == 1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpRISCV64LoweredGetClosurePtr:
@ -598,7 +600,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(riscv.AMOV)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()

3
src/cmd/compile/internal/s390x/ggen.go
View file

@ -5,6 +5,7 @@
package s390x
import (
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/internal/obj"
"cmd/internal/obj/s390x"
@ -23,7 +24,7 @@ func zerorange(pp *gc.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
}
// Adjust the frame to account for LR.
off += gc.Ctxt.FixedFrameSize()
off += base.Ctxt.FixedFrameSize()
reg := int16(s390x.REGSP)
// If the off cannot fit in a 12-bit unsigned displacement then we

7
src/cmd/compile/internal/s390x/ssa.go
View file

@ -7,6 +7,7 @@ package s390x
import (
"math"
"cmd/compile/internal/base"
"cmd/compile/internal/gc"
"cmd/compile/internal/logopt"
"cmd/compile/internal/ssa"
@ -573,7 +574,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
// caller's SP is FixedFrameSize below the address of the first arg
p := s.Prog(s390x.AMOVD)
p.From.Type = obj.TYPE_ADDR
p.From.Offset = -gc.Ctxt.FixedFrameSize()
p.From.Offset = -base.Ctxt.FixedFrameSize()
p.From.Name = obj.NAME_PARAM
p.To.Type = obj.TYPE_REG
p.To.Reg = v.Reg()
@ -642,8 +643,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
if logopt.Enabled() {
logopt.LogOpt(v.Pos, "nilcheck", "genssa", v.Block.Func.Name)
}
if gc.Debug_checknil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
gc.Warnl(v.Pos, "generated nil check")
if base.Debug.Nil != 0 && v.Pos.Line() > 1 { // v.Pos.Line()==1 in generated wrappers
base.WarnfAt(v.Pos, "generated nil check")
}
case ssa.OpS390XMVC:
vo := v.AuxValAndOff()

21
src/cmd/compile/internal/ssa/config.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/obj"
"cmd/internal/objabi"
@ -138,7 +139,7 @@ type Frontend interface {
// Auto returns a Node for an auto variable of the given type.
// The SSA compiler uses this function to allocate space for spills.
Auto(src.XPos, *types.Type) GCNode
Auto(src.XPos, *types.Type) ir.Node
// Given the name for a compound type, returns the name we should use
// for the parts of that compound type.
@ -178,24 +179,6 @@ type Frontend interface {
MyImportPath() string
}
// interface used to hold a *gc.Node (a stack variable).
// We'd use *gc.Node directly but that would lead to an import cycle.
type GCNode interface {
Typ() *types.Type
String() string
IsSynthetic() bool
IsAutoTmp() bool
StorageClass() StorageClass
}
type StorageClass uint8
const (
ClassAuto StorageClass = iota // local stack variable
ClassParam // argument
ClassParamOut // return value
)
const go116lateCallExpansion = true
// LateCallExpansionEnabledWithin returns true if late call expansion should be tested

29
src/cmd/compile/internal/ssa/deadstore.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
)
@ -136,9 +137,9 @@ func dse(f *Func) {
// reaches stores then we delete all the stores. The other operations will then
// be eliminated by the dead code elimination pass.
func elimDeadAutosGeneric(f *Func) {
addr := make(map[*Value]GCNode) // values that the address of the auto reaches
elim := make(map[*Value]GCNode) // values that could be eliminated if the auto is
used := make(map[GCNode]bool) // used autos that must be kept
addr := make(map[*Value]ir.Node) // values that the address of the auto reaches
elim := make(map[*Value]ir.Node) // values that could be eliminated if the auto is
used := make(map[ir.Node]bool) // used autos that must be kept
// visit the value and report whether any of the maps are updated
visit := func(v *Value) (changed bool) {
@ -146,8 +147,8 @@ func elimDeadAutosGeneric(f *Func) {
switch v.Op {
case OpAddr, OpLocalAddr:
// Propagate the address if it points to an auto.
n, ok := v.Aux.(GCNode)
if !ok || n.StorageClass() != ClassAuto {
n, ok := v.Aux.(ir.Node)
if !ok || n.Class() != ir.PAUTO {
return
}
if addr[v] == nil {
@ -157,8 +158,8 @@ func elimDeadAutosGeneric(f *Func) {
return
case OpVarDef, OpVarKill:
// v should be eliminated if we eliminate the auto.
n, ok := v.Aux.(GCNode)
if !ok || n.StorageClass() != ClassAuto {
n, ok := v.Aux.(ir.Node)
if !ok || n.Class() != ir.PAUTO {
return
}
if elim[v] == nil {
@ -173,8 +174,8 @@ func elimDeadAutosGeneric(f *Func) {
// for open-coded defers from being removed (since they
// may not be used by the inline code, but will be used by
// panic processing).
n, ok := v.Aux.(GCNode)
if !ok || n.StorageClass() != ClassAuto {
n, ok := v.Aux.(ir.Node)
if !ok || n.Class() != ir.PAUTO {
return
}
if !used[n] {
@ -221,7 +222,7 @@ func elimDeadAutosGeneric(f *Func) {
}
// Propagate any auto addresses through v.
node := GCNode(nil)
var node ir.Node
for _, a := range args {
if n, ok := addr[a]; ok && !used[n] {
if node == nil {
@ -298,15 +299,15 @@ func elimUnreadAutos(f *Func) {
// Loop over all ops that affect autos taking note of which
// autos we need and also stores that we might be able to
// eliminate.
seen := make(map[GCNode]bool)
seen := make(map[ir.Node]bool)
var stores []*Value
for _, b := range f.Blocks {
for _, v := range b.Values {
n, ok := v.Aux.(GCNode)
n, ok := v.Aux.(ir.Node)
if !ok {
continue
}
if n.StorageClass() != ClassAuto {
if n.Class() != ir.PAUTO {
continue
}
@ -334,7 +335,7 @@ func elimUnreadAutos(f *Func) {
// Eliminate stores to unread autos.
for _, store := range stores {
n, _ := store.Aux.(GCNode)
n, _ := store.Aux.(ir.Node)
if seen[n] {
continue
}

21
src/cmd/compile/internal/ssa/debug.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/internal/dwarf"
"cmd/internal/obj"
"encoding/hex"
@ -24,7 +25,7 @@ type FuncDebug struct {
// Slots is all the slots used in the debug info, indexed by their SlotID.
Slots []LocalSlot
// The user variables, indexed by VarID.
Vars []GCNode
Vars []ir.Node
// The slots that make up each variable, indexed by VarID.
VarSlots [][]SlotID
// The location list data, indexed by VarID. Must be processed by PutLocationList.
@ -165,7 +166,7 @@ func (s *debugState) logf(msg string, args ...interface{}) {
type debugState struct {
// See FuncDebug.
slots []LocalSlot
vars []GCNode
vars []ir.Node
varSlots [][]SlotID
lists [][]byte
@ -189,7 +190,7 @@ type debugState struct {
// The pending location list entry for each user variable, indexed by VarID.
pendingEntries []pendingEntry
varParts map[GCNode][]SlotID
varParts map[ir.Node][]SlotID
blockDebug []BlockDebug
pendingSlotLocs []VarLoc
liveSlots []liveSlot
@ -346,7 +347,7 @@ func BuildFuncDebug(ctxt *obj.Link, f *Func, loggingEnabled bool, stackOffset fu
}
if state.varParts == nil {
state.varParts = make(map[GCNode][]SlotID)
state.varParts = make(map[ir.Node][]SlotID)
} else {
for n := range state.varParts {
delete(state.varParts, n)
@ -360,7 +361,7 @@ func BuildFuncDebug(ctxt *obj.Link, f *Func, loggingEnabled bool, stackOffset fu
state.vars = state.vars[:0]
for i, slot := range f.Names {
state.slots = append(state.slots, slot)
if slot.N.IsSynthetic() {
if ir.IsSynthetic(slot.N) {
continue
}
@ -379,8 +380,8 @@ func BuildFuncDebug(ctxt *obj.Link, f *Func, loggingEnabled bool, stackOffset fu
for _, b := range f.Blocks {
for _, v := range b.Values {
if v.Op == OpVarDef || v.Op == OpVarKill {
n := v.Aux.(GCNode)
if n.IsSynthetic() {
n := v.Aux.(ir.Node)
if ir.IsSynthetic(n) {
continue
}
@ -425,7 +426,7 @@ func BuildFuncDebug(ctxt *obj.Link, f *Func, loggingEnabled bool, stackOffset fu
state.initializeCache(f, len(state.varParts), len(state.slots))
for i, slot := range f.Names {
if slot.N.IsSynthetic() {
if ir.IsSynthetic(slot.N) {
continue
}
for _, value := range f.NamedValues[slot] {
@ -717,8 +718,8 @@ func (state *debugState) processValue(v *Value, vSlots []SlotID, vReg *Register)
switch {
case v.Op == OpVarDef, v.Op == OpVarKill:
n := v.Aux.(GCNode)
if n.IsSynthetic() {
n := v.Aux.(ir.Node)
if ir.IsSynthetic(n) {
break
}

2
src/cmd/compile/internal/ssa/expand_calls.go
View file

@ -247,7 +247,7 @@ func expandCalls(f *Func) {
// i.e., the struct select is generated and remains in because it is not applied to an actual structure.
// The OpLoad was created to load the single field of the IData
// This case removes that StructSelect.
if leafType != selector.Type {
if leafType != selector.Type && !selector.Type.IsEmptyInterface() { // empty interface for #42727
f.Fatalf("Unexpected Load as selector, leaf=%s, selector=%s\n", leaf.LongString(), selector.LongString())
}
leaf.copyOf(selector)

108
src/cmd/compile/internal/ssa/export_test.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/obj"
"cmd/internal/obj/arm64"
@ -36,10 +37,10 @@ func testConfigArch(tb testing.TB, arch string) *Conf {
tb.Fatalf("unknown arch %s", arch)
}
if ctxt.Arch.PtrSize != 8 {
tb.Fatal("dummyTypes is 64-bit only")
tb.Fatal("testTypes is 64-bit only")
}
c := &Conf{
config: NewConfig(arch, dummyTypes, ctxt, true),
config: NewConfig(arch, testTypes, ctxt, true),
tb: tb,
}
return c
@ -53,108 +54,85 @@ type Conf struct {
func (c *Conf) Frontend() Frontend {
if c.fe == nil {
c.fe = DummyFrontend{t: c.tb, ctxt: c.config.ctxt}
c.fe = TestFrontend{t: c.tb, ctxt: c.config.ctxt}
}
return c.fe
}
// DummyFrontend is a test-only frontend.
// TestFrontend is a test-only frontend.
// It assumes 64 bit integers and pointers.
type DummyFrontend struct {
type TestFrontend struct {
t testing.TB
ctxt *obj.Link
}
type DummyAuto struct {
t *types.Type
s string
}
func (d *DummyAuto) Typ() *types.Type {
return d.t
}
func (d *DummyAuto) String() string {
return d.s
}
func (d *DummyAuto) StorageClass() StorageClass {
return ClassAuto
}
func (d *DummyAuto) IsSynthetic() bool {
return false
}
func (d *DummyAuto) IsAutoTmp() bool {
return true
}
func (DummyFrontend) StringData(s string) *obj.LSym {
func (TestFrontend) StringData(s string) *obj.LSym {
return nil
}
func (DummyFrontend) Auto(pos src.XPos, t *types.Type) GCNode {
return &DummyAuto{t: t, s: "aDummyAuto"}
func (TestFrontend) Auto(pos src.XPos, t *types.Type) ir.Node {
n := ir.NewNameAt(pos, &types.Sym{Name: "aFakeAuto"})
n.SetClass(ir.PAUTO)
return n
}
func (d DummyFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 8}
func (d TestFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 8}
}
func (d DummyFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off + 8}
func (d TestFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
return LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off + 8}
}
func (d DummyFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
func (d TestFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
return LocalSlot{N: s.N, Type: s.Type.Elem().PtrTo(), Off: s.Off},
LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 8},
LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 16}
LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 8},
LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 16}
}
func (d DummyFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
func (d TestFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
if s.Type.Size() == 16 {
return LocalSlot{N: s.N, Type: dummyTypes.Float64, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Float64, Off: s.Off + 8}
return LocalSlot{N: s.N, Type: testTypes.Float64, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Float64, Off: s.Off + 8}
}
return LocalSlot{N: s.N, Type: dummyTypes.Float32, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Float32, Off: s.Off + 4}
return LocalSlot{N: s.N, Type: testTypes.Float32, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Float32, Off: s.Off + 4}
}
func (d DummyFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
func (d TestFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
if s.Type.IsSigned() {
return LocalSlot{N: s.N, Type: dummyTypes.Int32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off}
return LocalSlot{N: s.N, Type: testTypes.Int32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off}
}
return LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off}
return LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off}
}
func (d DummyFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
func (d TestFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
return LocalSlot{N: s.N, Type: s.Type.FieldType(i), Off: s.Off + s.Type.FieldOff(i)}
}
func (d DummyFrontend) SplitArray(s LocalSlot) LocalSlot {
func (d TestFrontend) SplitArray(s LocalSlot) LocalSlot {
return LocalSlot{N: s.N, Type: s.Type.Elem(), Off: s.Off}
}
func (d DummyFrontend) SplitSlot(parent *LocalSlot, suffix string, offset int64, t *types.Type) LocalSlot {
func (d TestFrontend) SplitSlot(parent *LocalSlot, suffix string, offset int64, t *types.Type) LocalSlot {
return LocalSlot{N: parent.N, Type: t, Off: offset}
}
func (DummyFrontend) Line(_ src.XPos) string {
func (TestFrontend) Line(_ src.XPos) string {
return "unknown.go:0"
}
func (DummyFrontend) AllocFrame(f *Func) {
func (TestFrontend) AllocFrame(f *Func) {
}
func (d DummyFrontend) Syslook(s string) *obj.LSym {
func (d TestFrontend) Syslook(s string) *obj.LSym {
return d.ctxt.Lookup(s)
}
func (DummyFrontend) UseWriteBarrier() bool {
func (TestFrontend) UseWriteBarrier() bool {
return true // only writebarrier_test cares
}
func (DummyFrontend) SetWBPos(pos src.XPos) {
func (TestFrontend) SetWBPos(pos src.XPos) {
}
func (d DummyFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d DummyFrontend) Log() bool { return true }
func (d TestFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d TestFrontend) Log() bool { return true }
func (d DummyFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d DummyFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d DummyFrontend) Debug_checknil() bool { return false }
func (d TestFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d TestFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d TestFrontend) Debug_checknil() bool { return false }
func (d DummyFrontend) MyImportPath() string {
func (d TestFrontend) MyImportPath() string {
return "my/import/path"
}
var dummyTypes Types
var testTypes Types
func init() {
// Initialize just enough of the universe and the types package to make our tests function.
@ -198,12 +176,12 @@ func init() {
t.Align = uint8(typ.width)
types.Types[typ.et] = t
}
dummyTypes.SetTypPtrs()
testTypes.SetTypPtrs()
}
func (d DummyFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
func (d TestFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
func (d DummyFrontend) CanSSA(t *types.Type) bool {
// There are no un-SSAable types in dummy land.
func (d TestFrontend) CanSSA(t *types.Type) bool {
// There are no un-SSAable types in test land.
return true
}

3
src/cmd/compile/internal/ssa/location.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"fmt"
)
@ -59,7 +60,7 @@ func (r *Register) GCNum() int16 {
// { N: len, Type: int, Off: 0, SplitOf: parent, SplitOffset: 8}
// parent = &{N: s, Type: string}
type LocalSlot struct {
N GCNode // an ONAME *gc.Node representing a stack location.
N ir.Node // an ONAME *gc.Node representing a stack location.
Type *types.Type // type of slot
Off int64 // offset of slot in N

3
src/cmd/compile/internal/ssa/nilcheck.go
View file

@ -5,6 +5,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/internal/objabi"
"cmd/internal/src"
)
@ -235,7 +236,7 @@ func nilcheckelim2(f *Func) {
continue
}
if v.Type.IsMemory() || v.Type.IsTuple() && v.Type.FieldType(1).IsMemory() {
if v.Op == OpVarKill || v.Op == OpVarLive || (v.Op == OpVarDef && !v.Aux.(GCNode).Typ().HasPointers()) {
if v.Op == OpVarKill || v.Op == OpVarLive || (v.Op == OpVarDef && !v.Aux.(ir.Node).Type().HasPointers()) {
// These ops don't really change memory.
continue
// Note: OpVarDef requires that the defined variable not have pointers.

54
src/cmd/compile/internal/ssa/poset.go
View file

@ -136,13 +136,13 @@ type posetNode struct {
// Most internal data structures are pre-allocated and flat, so for instance adding a
// new relation does not cause any allocation. For performance reasons,
// each node has only up to two outgoing edges (like a binary tree), so intermediate
// "dummy" nodes are required to represent more than two relations. For instance,
// "extra" nodes are required to represent more than two relations. For instance,
// to record that A<I, A<J, A<K (with no known relation between I,J,K), we create the
// following DAG:
//
// A
// / \
// I dummy
// I extra
// / \
// J K
//
@ -223,7 +223,7 @@ func (po *poset) addchild(i1, i2 uint32, strict bool) {
po.setchr(i1, e2)
po.upush(undoSetChr, i1, 0)
} else {
// If n1 already has two children, add an intermediate dummy
// If n1 already has two children, add an intermediate extra
// node to record the relation correctly (without relating
// n2 to other existing nodes). Use a non-deterministic value
// to decide whether to append on the left or the right, to avoid
@ -231,27 +231,27 @@ func (po *poset) addchild(i1, i2 uint32, strict bool) {
//
// n1
// / \
// i1l dummy
// i1l extra
// / \
// i1r n2
//
dummy := po.newnode(nil)
extra := po.newnode(nil)
if (i1^i2)&1 != 0 { // non-deterministic
po.setchl(dummy, i1r)
po.setchr(dummy, e2)
po.setchr(i1, newedge(dummy, false))
po.setchl(extra, i1r)
po.setchr(extra, e2)
po.setchr(i1, newedge(extra, false))
po.upush(undoSetChr, i1, i1r)
} else {
po.setchl(dummy, i1l)
po.setchr(dummy, e2)
po.setchl(i1, newedge(dummy, false))
po.setchl(extra, i1l)
po.setchr(extra, e2)
po.setchl(i1, newedge(extra, false))
po.upush(undoSetChl, i1, i1l)
}
}
}
// newnode allocates a new node bound to SSA value n.
// If n is nil, this is a dummy node (= only used internally).
// If n is nil, this is an extra node (= only used internally).
func (po *poset) newnode(n *Value) uint32 {
i := po.lastidx + 1
po.lastidx++
@ -380,9 +380,9 @@ func (po *poset) newconst(n *Value) {
case higherptr != 0:
// Higher bound only. To record n < higher, we need
// a dummy root:
// an extra root:
//
// dummy
// extra
// / \
// root \
// / n
@ -395,11 +395,11 @@ func (po *poset) newconst(n *Value) {
if r2 != po.roots[0] { // all constants should be in root #0
panic("constant not in root #0")
}
dummy := po.newnode(nil)
po.changeroot(r2, dummy)
po.upush(undoChangeRoot, dummy, newedge(r2, false))
po.addchild(dummy, r2, false)
po.addchild(dummy, i, false)
extra := po.newnode(nil)
po.changeroot(r2, extra)
po.upush(undoChangeRoot, extra, newedge(r2, false))
po.addchild(extra, r2, false)
po.addchild(extra, i, false)
po.addchild(i, i2, true)
}
@ -612,7 +612,7 @@ func (po *poset) findroot(i uint32) uint32 {
panic("findroot didn't find any root")
}
// mergeroot merges two DAGs into one DAG by creating a new dummy root
// mergeroot merges two DAGs into one DAG by creating a new extra root
func (po *poset) mergeroot(r1, r2 uint32) uint32 {
// Root #0 is special as it contains all constants. Since mergeroot
// discards r2 as root and keeps r1, make sure that r2 is not root #0,
@ -1004,7 +1004,7 @@ func (po *poset) setOrder(n1, n2 *Value, strict bool) bool {
case !f1 && f2:
// n1 is not in any DAG but n2 is. If n2 is a root, we can put
// n1 in its place as a root; otherwise, we need to create a new
// dummy root to record the relation.
// extra root to record the relation.
i1 = po.newnode(n1)
if po.isroot(i2) {
@ -1020,17 +1020,17 @@ func (po *poset) setOrder(n1, n2 *Value, strict bool) bool {
// Re-parent as follows:
//
// dummy
// extra
// r / \
// \ ===> r i1
// i2 \ /
// i2
//
dummy := po.newnode(nil)
po.changeroot(r, dummy)
po.upush(undoChangeRoot, dummy, newedge(r, false))
po.addchild(dummy, r, false)
po.addchild(dummy, i1, false)
extra := po.newnode(nil)
po.changeroot(r, extra)
po.upush(undoChangeRoot, extra, newedge(r, false))
po.addchild(extra, r, false)
po.addchild(extra, i1, false)
po.addchild(i1, i2, strict)
case f1 && f2:

5
src/cmd/compile/internal/ssa/regalloc.go
View file

@ -104,7 +104,7 @@
// If b3 is the primary predecessor of b2, then we use x3 in b2 and
// add a x4:CX->BX copy at the end of b4.
// But the definition of x3 doesn't dominate b2. We should really
// insert a dummy phi at the start of b2 (x5=phi(x3,x4):BX) to keep
// insert an extra phi at the start of b2 (x5=phi(x3,x4):BX) to keep
// SSA form. For now, we ignore this problem as remaining in strict
// SSA form isn't needed after regalloc. We'll just leave the use
// of x3 not dominated by the definition of x3, and the CX->BX copy
@ -114,6 +114,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/objabi"
"cmd/internal/src"
@ -1248,7 +1249,7 @@ func (s *regAllocState) regalloc(f *Func) {
// This forces later liveness analysis to make the
// value live at this point.
v.SetArg(0, s.makeSpill(a, b))
} else if _, ok := a.Aux.(GCNode); ok && vi.rematerializeable {
} else if _, ok := a.Aux.(ir.Node); ok && vi.rematerializeable {
// Rematerializeable value with a gc.Node. This is the address of
// a stack object (e.g. an LEAQ). Keep the object live.
// Change it to VarLive, which is what plive expects for locals.

3
src/cmd/compile/internal/ssa/stackalloc.go
View file

@ -7,6 +7,7 @@
package ssa
import (
"cmd/compile/internal/ir"
"cmd/compile/internal/types"
"cmd/internal/src"
"fmt"
@ -156,7 +157,7 @@ func (s *stackAllocState) stackalloc() {
if v.Aux == nil {
f.Fatalf("%s has nil Aux\n", v.LongString())
}
loc := LocalSlot{N: v.Aux.(GCNode), Type: v.Type, Off: v.AuxInt}
loc := LocalSlot{N: v.Aux.(ir.Node), Type: v.Type, Off: v.AuxInt}
if f.pass.debug > stackDebug {
fmt.Printf("stackalloc %s to %s\n", v, loc)
}

2
src/cmd/compile/internal/syntax/dumper_test.go
View file

@ -13,7 +13,7 @@ func TestDump(t *testing.T) {
t.Skip("skipping test in short mode")
}
// provide a dummy error handler so parsing doesn't stop after first error
// provide a no-op error handler so parsing doesn't stop after first error
ast, err := ParseFile(*src_, func(error) {}, nil, CheckBranches)
if err != nil {
t.Error(err)

2
src/cmd/compile/internal/syntax/nodes.go
View file

@ -116,7 +116,7 @@ func (*decl) aDecl() {}
// All declarations belonging to the same group point to the same Group node.
type Group struct {
dummy int // not empty so we are guaranteed different Group instances
_ int // not empty so we are guaranteed different Group instances
}
// ----------------------------------------------------------------------------

2
src/cmd/compile/internal/syntax/printer_test.go
View file

@ -18,7 +18,7 @@ func TestPrint(t *testing.T) {
t.Skip("skipping test in short mode")
}
// provide a dummy error handler so parsing doesn't stop after first error
// provide a no-op error handler so parsing doesn't stop after first error
ast, err := ParseFile(*src_, func(error) {}, nil, 0)
if err != nil {
t.Error(err)

8
src/cmd/compile/internal/types/scope.go
View file

@ -15,7 +15,7 @@ var Block int32 // current block number
// restored once the block scope ends.
type dsym struct {
sym *Sym // sym == nil indicates stack mark
def *Node
def IRNode
block int32
lastlineno src.XPos // last declaration for diagnostic
}
@ -79,16 +79,16 @@ func IsDclstackValid() bool {
}
// PkgDef returns the definition associated with s at package scope.
func (s *Sym) PkgDef() *Node {
func (s *Sym) PkgDef() IRNode {
return *s.pkgDefPtr()
}
// SetPkgDef sets the definition associated with s at package scope.
func (s *Sym) SetPkgDef(n *Node) {
func (s *Sym) SetPkgDef(n IRNode) {
*s.pkgDefPtr() = n
}
func (s *Sym) pkgDefPtr() **Node {
func (s *Sym) pkgDefPtr() *IRNode {
// Look for outermost saved declaration, which must be the
// package scope definition, if present.
for _, d := range dclstack {

6
src/cmd/compile/internal/types/sizeof_test.go
View file

@ -20,11 +20,11 @@ func TestSizeof(t *testing.T) {
_32bit uintptr // size on 32bit platforms
_64bit uintptr // size on 64bit platforms
}{
{Sym{}, 52, 88},
{Type{}, 52, 88},
{Sym{}, 60, 104},
{Type{}, 56, 96},
{Map{}, 20, 40},
{Forward{}, 20, 32},
{Func{}, 32, 56},
{Func{}, 28, 48},
{Struct{}, 16, 32},
{Interface{}, 8, 16},
{Chan{}, 8, 16},

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