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

[git-generate]

cd src/cmd/compile/internal/gc
rf '
	ex {
		import "cmd/compile/internal/base"
		thearch.LinkArch.Name -> base.Ctxt.Arch.Name
	}

	# Move out of reflect.go a few functions that should stay.
	mv addsignats obj.go
	mv deferstruct ssa.go

	# Export reflectdata API.
	mv zerosize ZeroSize
	mv hmap MapType
	mv bmap MapBucketType
	mv hiter MapIterType
	mv addsignat NeedRuntimeType
	mv typename TypePtr
	mv typenamesym TypeSym
	mv typesymprefix TypeSymPrefix
	mv itabsym ITabSym
	mv tracksym TrackSym
	mv zeroaddr ZeroAddr
	mv itabname ITabAddr
	mv ifaceMethodOffset InterfaceMethodOffset
	mv peekitabs CompileITabs
	mv addptabs CollectPTabs
	mv algtype AlgType
	mv dtypesym WriteType
	mv dumpbasictypes WriteBasicTypes
	mv dumpimportstrings WriteImportStrings
	mv dumpsignats WriteRuntimeTypes
	mv dumptabs WriteTabs
	mv eqinterface EqInterface
	mv eqstring EqString

	mv GCProg gcProg
	mv EqCanPanic eqCanPanic
	mv IsRegularMemory isRegularMemory
	mv Sig typeSig

	mv hashmem alg.go
	mv CollectPTabs genwrapper ZeroSize reflect.go
	mv alg.go reflect.go cmd/compile/internal/reflectdata
'

Change-Id: Iaae9da9e9fad5f772f5216004823ccff2ea8f139
Reviewed-on: https://go-review.googlesource.com/c/go/+/279475
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>

src/cmd/compile/internal/gc/obj.go

@@ -8,6 +8,7 @@ import (
 	"cmd/compile/internal/base"
 	"cmd/compile/internal/ir"
 	"cmd/compile/internal/objw"
+	"cmd/compile/internal/reflectdata"
 	"cmd/compile/internal/staticdata"
 	"cmd/compile/internal/typecheck"
 	"cmd/compile/internal/types"
@@ -112,14 +113,14 @@ func dumpdata() {
 
 	dumpglobls(typecheck.Target.Externs)
 	staticdata.WriteFuncSyms()
-	addptabs()
+	reflectdata.CollectPTabs()
 	numExports := len(typecheck.Target.Exports)
 	addsignats(typecheck.Target.Externs)
-	dumpsignats()
-	dumptabs()
-	numPTabs, numITabs := CountTabs()
-	dumpimportstrings()
-	dumpbasictypes()
+	reflectdata.WriteRuntimeTypes()
+	reflectdata.WriteTabs()
+	numPTabs, numITabs := reflectdata.CountTabs()
+	reflectdata.WriteImportStrings()
+	reflectdata.WriteBasicTypes()
 	dumpembeds()
 
 	// Calls to dumpsignats can generate functions,
@@ -138,7 +139,7 @@ func dumpdata() {
 		}
 		numDecls = len(typecheck.Target.Decls)
 		compileFunctions()
-		dumpsignats()
+		reflectdata.WriteRuntimeTypes()
 		if numDecls == len(typecheck.Target.Decls) {
 			break
 		}
@@ -147,9 +148,9 @@ func dumpdata() {
 	// Dump extra globals.
 	dumpglobls(typecheck.Target.Externs[numExterns:])
 
-	if zerosize > 0 {
+	if reflectdata.ZeroSize > 0 {
 		zero := ir.Pkgs.Map.Lookup("zero")
-		objw.Global(zero.Linksym(), int32(zerosize), obj.DUPOK|obj.RODATA)
+		objw.Global(zero.Linksym(), int32(reflectdata.ZeroSize), obj.DUPOK|obj.RODATA)
 	}
 
 	addGCLocals()
@@ -157,7 +158,7 @@ func dumpdata() {
 	if numExports != len(typecheck.Target.Exports) {
 		base.Fatalf("Target.Exports changed after compile functions loop")
 	}
-	newNumPTabs, newNumITabs := CountTabs()
+	newNumPTabs, newNumITabs := reflectdata.CountTabs()
 	if newNumPTabs != numPTabs {
 		base.Fatalf("ptabs changed after compile functions loop")
 	}
@@ -184,36 +185,6 @@ func dumpLinkerObj(bout *bio.Writer) {
 	obj.WriteObjFile(base.Ctxt, bout)
 }
 
-func addptabs() {
-	if !base.Ctxt.Flag_dynlink || types.LocalPkg.Name != "main" {
-		return
-	}
-	for _, exportn := range typecheck.Target.Exports {
-		s := exportn.Sym()
-		nn := ir.AsNode(s.Def)
-		if nn == nil {
-			continue
-		}
-		if nn.Op() != ir.ONAME {
-			continue
-		}
-		n := nn.(*ir.Name)
-		if !types.IsExported(s.Name) {
-			continue
-		}
-		if s.Pkg.Name != "main" {
-			continue
-		}
-		if n.Type().Kind() == types.TFUNC && n.Class_ == ir.PFUNC {
-			// function
-			ptabs = append(ptabs, ptabEntry{s: s, t: s.Def.Type()})
-		} else {
-			// variable
-			ptabs = append(ptabs, ptabEntry{s: s, t: types.NewPtr(s.Def.Type())})
-		}
-	}
-}
-
 func dumpGlobal(n *ir.Name) {
 	if n.Type() == nil {
 		base.Fatalf("external %v nil type\n", n)
@@ -373,3 +344,12 @@ func dumpembeds() {
 		staticdata.WriteEmbed(v)
 	}
 }
+
+func addsignats(dcls []ir.Node) {
+	// copy types from dcl list to signatset
+	for _, n := range dcls {
+		if n.Op() == ir.OTYPE {
+			reflectdata.NeedRuntimeType(n.Type())
+		}
+	}
+}