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[dev.regabi] cmd/compile: split out package dwarfgen [generated]

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[git-generate]
cd src/cmd/compile/internal/gc

rf '
	# Inline and remove ngotype.
	ex {
		import "cmd/compile/internal/ir"
		import "cmd/compile/internal/reflectdata"
		var n ir.Node
		ngotype(n) -> reflectdata.TypeSym(n.Type())
	}
	rm ngotype

	mv recordFlags RecordFlags
	mv recordPackageName RecordPackageName
	mv RecordFlags RecordPackageName dwarf.go

	mv debuginfo Info
	mv genAbstractFunc AbstractFunc
	mv scope.go scope_test.go dwarf.go dwinl.go cmd/compile/internal/dwarfgen
'

Change-Id: I31fa982900dbba2066ca4c7a706af922e5481c70
Reviewed-on: https://go-review.googlesource.com/c/go/+/279477
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Russ Cox 2020-12-23 00:58:27 -05:00
parent 6c34d2f420
commit 01fd2d05c8
7 changed files with 94 additions and 94 deletions
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76
src/cmd/compile/internal/gc/main.go
View file

@ -10,6 +10,7 @@ import (
"bufio"
"bytes"
"cmd/compile/internal/base"
"cmd/compile/internal/dwarfgen"
"cmd/compile/internal/escape"
"cmd/compile/internal/inline"
"cmd/compile/internal/ir"
@ -114,7 +115,7 @@ func Main(archInit func(*ssagen.ArchInfo)) {
// Record flags that affect the build result. (And don't
// record flags that don't, since that would cause spurious
// changes in the binary.)
recordFlags("B", "N", "l", "msan", "race", "shared", "dynlink", "dwarflocationlists", "dwarfbasentries", "smallframes", "spectre")
dwarfgen.RecordFlags("B", "N", "l", "msan", "race", "shared", "dynlink", "dwarflocationlists", "dwarfbasentries", "smallframes", "spectre")
if !base.EnableTrace && base.Flag.LowerT {
log.Fatalf("compiler not built with support for -t")
@ -134,8 +135,8 @@ func Main(archInit func(*ssagen.ArchInfo)) {
}
if base.Flag.Dwarf {
base.Ctxt.DebugInfo = debuginfo
base.Ctxt.GenAbstractFunc = genAbstractFunc
base.Ctxt.DebugInfo = dwarfgen.Info
base.Ctxt.GenAbstractFunc = dwarfgen.AbstractFunc
base.Ctxt.DwFixups = obj.NewDwarfFixupTable(base.Ctxt)
} else {
// turn off inline generation if no dwarf at all
@ -211,7 +212,7 @@ func Main(archInit func(*ssagen.ArchInfo)) {
ssagen.CgoSymABIs()
base.Timer.Stop()
base.Timer.AddEvent(int64(lines), "lines")
recordPackageName()
dwarfgen.RecordPackageName()
// Typecheck.
typecheck.Package()
@ -364,73 +365,6 @@ func writebench(filename string) error {
return f.Close()
}
// recordFlags records the specified command-line flags to be placed
// in the DWARF info.
func recordFlags(flags ...string) {
if base.Ctxt.Pkgpath == "" {
// We can't record the flags if we don't know what the
// package name is.
return
}
type BoolFlag interface {
IsBoolFlag() bool
}
type CountFlag interface {
IsCountFlag() bool
}
var cmd bytes.Buffer
for _, name := range flags {
f := flag.Lookup(name)
if f == nil {
continue
}
getter := f.Value.(flag.Getter)
if getter.String() == f.DefValue {
// Flag has default value, so omit it.
continue
}
if bf, ok := f.Value.(BoolFlag); ok && bf.IsBoolFlag() {
val, ok := getter.Get().(bool)
if ok && val {
fmt.Fprintf(&cmd, " -%s", f.Name)
continue
}
}
if cf, ok := f.Value.(CountFlag); ok && cf.IsCountFlag() {
val, ok := getter.Get().(int)
if ok && val == 1 {
fmt.Fprintf(&cmd, " -%s", f.Name)
continue
}
}
fmt.Fprintf(&cmd, " -%s=%v", f.Name, getter.Get())
}
if cmd.Len() == 0 {
return
}
s := base.Ctxt.Lookup(dwarf.CUInfoPrefix + "producer." + base.Ctxt.Pkgpath)
s.Type = objabi.SDWARFCUINFO
// Sometimes (for example when building tests) we can link
// together two package main archives. So allow dups.
s.Set(obj.AttrDuplicateOK, true)
base.Ctxt.Data = append(base.Ctxt.Data, s)
s.P = cmd.Bytes()[1:]
}
// recordPackageName records the name of the package being
// compiled, so that the linker can save it in the compile unit's DIE.
func recordPackageName() {
s := base.Ctxt.Lookup(dwarf.CUInfoPrefix + "packagename." + base.Ctxt.Pkgpath)
s.Type = objabi.SDWARFCUINFO
// Sometimes (for example when building tests) we can link
// together two package main archives. So allow dups.
s.Set(obj.AttrDuplicateOK, true)
base.Ctxt.Data = append(base.Ctxt.Data, s)
s.P = []byte(types.LocalPkg.Name)
}
func makePos(b *src.PosBase, line, col uint) src.XPos {
return base.Ctxt.PosTable.XPos(src.MakePos(b, line, col))
}