[dev.regabi] cmd/compile, runtime: fix up comments/error messages fro…

…m recent renames

Went in a semi-automated way through the clearest renames of functions,
and updated comments and error messages where it made sense.

Change-Id: Ied8e152b562b705da7f52f715991a77dab60da35
Reviewed-on: https://go-review.googlesource.com/c/go/+/284216
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>

src/cmd/asm/internal/asm/parse.go

@@ -305,7 +305,7 @@ func (p *Parser) pseudo(word string, operands [][]lex.Token) bool {
 // references and writes symabis information to w.
 //
 // The symabis format is documented at
-// cmd/compile/internal/gc.readSymABIs.
+// cmd/compile/internal/ssagen.ReadSymABIs.
 func (p *Parser) symDefRef(w io.Writer, word string, operands [][]lex.Token) {
 	switch word {
 	case "TEXT":

src/cmd/compile/internal/base/flag.go

@@ -174,7 +174,7 @@ func ParseFlags() {
 	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
+	parseSpectre(Flag.Spectre) // left as string for RecordFlags
 
 	Ctxt.Flag_shared = Ctxt.Flag_dynlink || Ctxt.Flag_shared
 	Ctxt.Flag_optimize = Flag.N == 0

src/cmd/compile/internal/base/print.go

@@ -121,7 +121,7 @@ func ErrorfAt(pos src.XPos, format string, args ...interface{}) {
 		lasterror.syntax = pos
 	} else {
 		// only one of multiple equal non-syntax errors per line
-		// (flusherrors shows only one of them, so we filter them
+		// (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.)

src/cmd/compile/internal/bitvec/bv.go

@@ -37,7 +37,7 @@ func NewBulk(nbit int32, count int32) Bulk {
 	nword := (nbit + wordBits - 1) / wordBits
 	size := int64(nword) * int64(count)
 	if int64(int32(size*4)) != size*4 {
-		base.Fatalf("bvbulkalloc too big: nbit=%d count=%d nword=%d size=%d", nbit, count, nword, size)
+		base.Fatalf("NewBulk too big: nbit=%d count=%d nword=%d size=%d", nbit, count, nword, size)
 	}
 	return Bulk{
 		words: make([]uint32, size),

src/cmd/compile/internal/escape/escape.go

@@ -856,7 +856,7 @@ func (e *escape) discards(l ir.Nodes) {
 	}
 }
 
-// addr evaluates an addressable expression n and returns an EscHole
+// addr evaluates an addressable expression n and returns a hole
 // that represents storing into the represented location.
 func (e *escape) addr(n ir.Node) hole {
 	if n == nil || ir.IsBlank(n) {
@@ -1785,7 +1785,7 @@ func (l leaks) Encode() string {
 	return s
 }
 
-// parseLeaks parses a binary string representing an EscLeaks.
+// parseLeaks parses a binary string representing a leaks
 func parseLeaks(s string) leaks {
 	var l leaks
 	if !strings.HasPrefix(s, "esc:") {

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

@@ -72,7 +72,7 @@ func enqueueFunc(fn *ir.Func) {
 func prepareFunc(fn *ir.Func) {
 	// 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).
+	// (e.g. in MarkTypeUsedInInterface).
 	ssagen.InitLSym(fn, true)
 
 	// Calculate parameter offsets.

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

@@ -121,7 +121,7 @@ func Main(archInit func(*ssagen.ArchInfo)) {
 		log.Fatalf("compiler not built with support for -t")
 	}
 
-	// Enable inlining (after recordFlags, to avoid recording the rewritten -l).  For now:
+	// Enable inlining (after RecordFlags, to avoid recording the rewritten -l).  For now:
 	//	default: inlining on.  (Flag.LowerL == 1)
 	//	-l: inlining off  (Flag.LowerL == 0)
 	//	-l=2, -l=3: inlining on again, with extra debugging (Flag.LowerL > 1)
@@ -193,7 +193,7 @@ func Main(archInit func(*ssagen.ArchInfo)) {
 	typecheck.Target = new(ir.Package)
 
 	typecheck.NeedITab = func(t, iface *types.Type) { reflectdata.ITabAddr(t, iface) }
-	typecheck.NeedRuntimeType = reflectdata.NeedRuntimeType // TODO(rsc): typenamesym for lock?
+	typecheck.NeedRuntimeType = reflectdata.NeedRuntimeType // TODO(rsc): TypeSym for lock?
 
 	base.AutogeneratedPos = makePos(src.NewFileBase("<autogenerated>", "<autogenerated>"), 1, 0)
 
@@ -261,15 +261,15 @@ func Main(archInit func(*ssagen.ArchInfo)) {
 	escape.Funcs(typecheck.Target.Decls)
 
 	// Collect information for go:nowritebarrierrec
-	// checking. This must happen before transformclosure.
+	// checking. This must happen before transforming closures during Walk
 	// We'll do the final check after write barriers are
 	// inserted.
 	if base.Flag.CompilingRuntime {
 		ssagen.EnableNoWriteBarrierRecCheck()
 	}
 
 	// Prepare for SSA compilation.
-	// This must be before peekitabs, because peekitabs
+	// This must be before CompileITabs, because CompileITabs
 	// can trigger function compilation.
 	typecheck.InitRuntime()
 	ssagen.InitConfig()

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

@@ -121,7 +121,7 @@ func dumpdata() {
 	reflectdata.WriteBasicTypes()
 	dumpembeds()
 
-	// Calls to dumpsignats can generate functions,
+	// Calls to WriteRuntimeTypes can generate functions,
 	// like method wrappers and hash and equality routines.
 	// Compile any generated functions, process any new resulting types, repeat.
 	// This can't loop forever, because there is no way to generate an infinite

src/cmd/compile/internal/inline/inl.go

@@ -4,7 +4,7 @@
 //
 // The inlining facility makes 2 passes: first caninl determines which
 // functions are suitable for inlining, and for those that are it
-// saves a copy of the body. Then inlcalls walks each function body to
+// saves a copy of the body. Then InlineCalls walks each function body to
 // expand calls to inlinable functions.
 //
 // The Debug.l flag controls the aggressiveness. Note that main() swaps level 0 and 1,
@@ -79,7 +79,7 @@ func InlinePackage() {
 // fn and ->nbody will already have been typechecked.
 func CanInline(fn *ir.Func) {
 	if fn.Nname == nil {
-		base.Fatalf("caninl no nname %+v", fn)
+		base.Fatalf("CanInline no nname %+v", fn)
 	}
 
 	var reason string // reason, if any, that the function was not inlined
@@ -144,7 +144,7 @@ func CanInline(fn *ir.Func) {
 	}
 
 	if fn.Typecheck() == 0 {
-		base.Fatalf("caninl on non-typechecked function %v", fn)
+		base.Fatalf("CanInline on non-typechecked function %v", fn)
 	}
 
 	n := fn.Nname
@@ -200,11 +200,11 @@ func Inline_Flood(n *ir.Name, exportsym func(*ir.Name)) {
 		return
 	}
 	if n.Op() != ir.ONAME || n.Class != ir.PFUNC {
-		base.Fatalf("inlFlood: unexpected %v, %v, %v", n, n.Op(), n.Class)
+		base.Fatalf("Inline_Flood: unexpected %v, %v, %v", n, n.Op(), n.Class)
 	}
 	fn := n.Func
 	if fn == nil {
-		base.Fatalf("inlFlood: missing Func on %v", n)
+		base.Fatalf("Inline_Flood: missing Func on %v", n)
 	}
 	if fn.Inl == nil {
 		return

src/cmd/compile/internal/ir/const.go

@@ -77,7 +77,7 @@ func ConstOverflow(v constant.Value, t *types.Type) bool {
 		ft := types.FloatForComplex(t)
 		return ConstOverflow(constant.Real(v), ft) || ConstOverflow(constant.Imag(v), ft)
 	}
-	base.Fatalf("doesoverflow: %v, %v", v, t)
+	base.Fatalf("ConstOverflow: %v, %v", v, t)
 	panic("unreachable")
 }
 

src/cmd/compile/internal/ir/func.go

@@ -63,7 +63,7 @@ type Func struct {
 	Exit  Nodes
 
 	// ONAME nodes for all params/locals for this func/closure, does NOT
-	// include closurevars until transformclosure runs.
+	// include closurevars until transforming closures during walk.
 	// Names must be listed PPARAMs, PPARAMOUTs, then PAUTOs,
 	// with PPARAMs and PPARAMOUTs in order corresponding to the function signature.
 	// However, as anonymous or blank PPARAMs are not actually declared,

src/cmd/compile/internal/ir/stmt.go

@@ -343,7 +343,7 @@ type SelectStmt struct {
 	HasBreak bool
 
 	// TODO(rsc): Instead of recording here, replace with a block?
-	Compiled Nodes // compiled form, after walkswitch
+	Compiled Nodes // compiled form, after walkSwitch
 }
 
 func NewSelectStmt(pos src.XPos, cases []*CommClause) *SelectStmt {
@@ -376,7 +376,7 @@ type SwitchStmt struct {
 	HasBreak bool
 
 	// TODO(rsc): Instead of recording here, replace with a block?
-	Compiled Nodes // compiled form, after walkswitch
+	Compiled Nodes // compiled form, after walkSwitch
 }
 
 func NewSwitchStmt(pos src.XPos, tag Node, cases []*CaseClause) *SwitchStmt {

src/cmd/compile/internal/liveness/bvset.go

@@ -47,7 +47,7 @@ func (m *bvecSet) grow() {
 	m.index = newIndex
 }
 
-// add adds bv to the set and returns its index in m.extractUniqe.
+// add adds bv to the set and returns its index in m.extractUnique.
 // The caller must not modify bv after this.
 func (m *bvecSet) add(bv bitvec.BitVec) int {
 	if len(m.uniq)*4 >= len(m.index) {

src/cmd/compile/internal/liveness/plive.go

@@ -1060,7 +1060,7 @@ func (lv *liveness) printDebug() {
 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.)
+	// (Nodes without pointers aren't in lv.vars; see ShouldTrack.)
 	var maxArgNode *ir.Name
 	for _, n := range lv.vars {
 		switch n.Class {

src/cmd/compile/internal/noder/import.go

@@ -418,7 +418,7 @@ func clearImports() {
 		if types.IsDotAlias(s) {
 			// throw away top-level name left over
 			// from previous import . "x"
-			// We'll report errors after type checking in checkDotImports.
+			// We'll report errors after type checking in CheckDotImports.
 			s.Def = nil
 			continue
 		}

src/cmd/compile/internal/noder/noder.go

@@ -86,7 +86,7 @@ func ParseFiles(filenames []string) uint {
 		if base.SyntaxErrors() != 0 {
 			base.ErrorExit()
 		}
-		// Always run testdclstack here, even when debug_dclstack is not set, as a sanity measure.
+		// Always run CheckDclstack here, even when debug_dclstack is not set, as a sanity measure.
 		types.CheckDclstack()
 	}
 
@@ -638,7 +638,7 @@ func (p *noder) funcDecl(fun *syntax.FuncDecl) ir.Node {
 		}
 	} else {
 		f.Shortname = name
-		name = ir.BlankNode.Sym() // filled in by typecheckfunc
+		name = ir.BlankNode.Sym() // filled in by tcFunc
 	}
 
 	f.Nname = ir.NewNameAt(p.pos(fun.Name), name)
@@ -1084,7 +1084,7 @@ func (p *noder) stmtsFall(stmts []syntax.Stmt, fallOK bool) []ir.Node {
 		if s == nil {
 		} else if s.Op() == ir.OBLOCK && len(s.(*ir.BlockStmt).List) > 0 {
 			// Inline non-empty block.
-			// Empty blocks must be preserved for checkreturn.
+			// Empty blocks must be preserved for CheckReturn.
 			nodes = append(nodes, s.(*ir.BlockStmt).List...)
 		} else {
 			nodes = append(nodes, s)
@@ -1860,7 +1860,7 @@ func (p *noder) funcLit(expr *syntax.FuncLit) ir.Node {
 	fn := ir.NewFunc(p.pos(expr))
 	fn.SetIsHiddenClosure(ir.CurFunc != nil)
 
-	fn.Nname = ir.NewNameAt(p.pos(expr), ir.BlankNode.Sym()) // filled in by typecheckclosure
+	fn.Nname = ir.NewNameAt(p.pos(expr), ir.BlankNode.Sym()) // filled in by tcClosure
 	fn.Nname.Func = fn
 	fn.Nname.Ntype = xtype
 	fn.Nname.Defn = fn

src/cmd/compile/internal/objw/prog.go

@@ -205,7 +205,7 @@ func (pp *Progs) Append(p *obj.Prog, as obj.As, ftype obj.AddrType, freg int16,
 
 func (pp *Progs) SetText(fn *ir.Func) {
 	if pp.Text != nil {
-		base.Fatalf("Progs.settext called twice")
+		base.Fatalf("Progs.SetText called twice")
 	}
 	ptxt := pp.Prog(obj.ATEXT)
 	pp.Text = ptxt

src/cmd/compile/internal/pkginit/init.go

@@ -60,10 +60,10 @@ func Task() *ir.Name {
 		fns = append(fns, fn.Linksym())
 	}
 	if typecheck.InitTodoFunc.Dcl != nil {
-		// We only generate temps using initTodo if there
+		// We only generate temps using InitTodoFunc if there
 		// are package-scope initialization statements, so
 		// something's weird if we get here.
-		base.Fatalf("initTodo still has declarations")
+		base.Fatalf("InitTodoFunc still has declarations")
 	}
 	typecheck.InitTodoFunc = nil
 

src/cmd/compile/internal/reflectdata/alg.go

@@ -689,7 +689,7 @@ func EqString(s, t ir.Node) (eqlen *ir.BinaryExpr, eqmem *ir.CallExpr) {
 // eqtab must be evaluated before eqdata, and shortcircuiting is required.
 func EqInterface(s, t ir.Node) (eqtab *ir.BinaryExpr, eqdata *ir.CallExpr) {
 	if !types.Identical(s.Type(), t.Type()) {
-		base.Fatalf("eqinterface %v %v", 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)

src/cmd/compile/internal/reflectdata/reflect.go

@@ -32,7 +32,7 @@ type itabEntry struct {
 
 	// symbols of each method in
 	// the itab, sorted by byte offset;
-	// filled in by peekitabs
+	// filled in by CompileITabs
 	entries []*obj.LSym
 }
 
@@ -401,7 +401,7 @@ func dimportpath(p *types.Pkg) {
 	}
 
 	// If we are compiling the runtime package, there are two runtime packages around
-	// -- localpkg and Runtimepkg. We don't want to produce import path symbols for
+	// -- localpkg and Pkgs.Runtime. We don't want to produce import path symbols for
 	// both of them, so just produce one for localpkg.
 	if base.Ctxt.Pkgpath == "runtime" && p == ir.Pkgs.Runtime {
 		return
@@ -811,7 +811,7 @@ func TypeSymPrefix(prefix string, t *types.Type) *types.Sym {
 
 func TypeSym(t *types.Type) *types.Sym {
 	if t == nil || (t.IsPtr() && t.Elem() == nil) || t.IsUntyped() {
-		base.Fatalf("typenamesym %v", t)
+		base.Fatalf("TypeSym %v", t)
 	}
 	if t.Kind() == types.TFUNC && t.Recv() != nil {
 		base.Fatalf("misuse of method type: %v", t)
@@ -853,7 +853,7 @@ func TypePtr(t *types.Type) *ir.AddrExpr {
 
 func ITabAddr(t, itype *types.Type) *ir.AddrExpr {
 	if t == nil || (t.IsPtr() && t.Elem() == nil) || t.IsUntyped() || !itype.IsInterface() || itype.IsEmptyInterface() {
-		base.Fatalf("itabname(%v, %v)", t, itype)
+		base.Fatalf("ITabAddr(%v, %v)", t, itype)
 	}
 	s := ir.Pkgs.Itab.Lookup(t.ShortString() + "," + itype.ShortString())
 	if s.Def == nil {
@@ -936,7 +936,7 @@ func formalType(t *types.Type) *types.Type {
 func writeType(t *types.Type) *obj.LSym {
 	t = formalType(t)
 	if t.IsUntyped() {
-		base.Fatalf("dtypesym %v", t)
+		base.Fatalf("writeType %v", t)
 	}
 
 	s := types.TypeSym(t)
@@ -1275,7 +1275,7 @@ func genfun(t, it *types.Type) []*obj.LSym {
 }
 
 // ITabSym uses the information gathered in
-// peekitabs to de-virtualize interface methods.
+// CompileITabs to de-virtualize interface methods.
 // Since this is called by the SSA backend, it shouldn't
 // generate additional Nodes, Syms, etc.
 func ITabSym(it *obj.LSym, offset int64) *obj.LSym {
@@ -1312,7 +1312,7 @@ func NeedRuntimeType(t *types.Type) {
 }
 
 func WriteRuntimeTypes() {
-	// Process signatset. Use a loop, as dtypesym adds
+	// Process signatset. Use a loop, as writeType adds
 	// entries to signatset while it is being processed.
 	signats := make([]typeAndStr, len(signatslice))
 	for len(signatslice) > 0 {
@@ -1617,13 +1617,13 @@ func (p *gcProg) emit(t *types.Type, offset int64) {
 	}
 	switch t.Kind() {
 	default:
-		base.Fatalf("GCProg.emit: unexpected type %v", t)
+		base.Fatalf("gcProg.emit: unexpected type %v", t)
 
 	case types.TSTRING:
 		p.w.Ptr(offset / int64(types.PtrSize))
 
 	case types.TINTER:
-		// Note: the first word isn't a pointer. See comment in plive.go:onebitwalktype1.
+		// Note: the first word isn't a pointer. See comment in typebits.Set
 		p.w.Ptr(offset/int64(types.PtrSize) + 1)
 
 	case types.TSLICE:
@@ -1632,7 +1632,7 @@ func (p *gcProg) emit(t *types.Type, offset int64) {
 	case types.TARRAY:
 		if t.NumElem() == 0 {
 			// should have been handled by haspointers check above
-			base.Fatalf("GCProg.emit: empty array")
+			base.Fatalf("gcProg.emit: empty array")
 		}
 
 		// Flatten array-of-array-of-array to just a big array by multiplying counts.

src/cmd/compile/internal/ssagen/abi.go

@@ -154,7 +154,7 @@ func InitLSym(f *ir.Func, hasBody bool) {
 // makes calls to helpers to create ABI wrappers if needed.
 func selectLSym(f *ir.Func, hasBody bool) {
 	if f.LSym != nil {
-		base.FatalfAt(f.Pos(), "Func.initLSym called twice on %v", f)
+		base.FatalfAt(f.Pos(), "InitLSym called twice on %v", f)
 	}
 
 	if nam := f.Nname; !ir.IsBlank(nam) {

src/cmd/compile/internal/ssagen/nowb.go

@@ -45,7 +45,7 @@ type nowritebarrierrecCall struct {
 }
 
 // newNowritebarrierrecChecker creates a nowritebarrierrecChecker. It
-// must be called before transformclosure and walk.
+// must be called before walk
 func newNowritebarrierrecChecker() *nowritebarrierrecChecker {
 	c := &nowritebarrierrecChecker{
 		extraCalls: make(map[*ir.Func][]nowritebarrierrecCall),
@@ -54,7 +54,7 @@ func newNowritebarrierrecChecker() *nowritebarrierrecChecker {
 	// Find all systemstack calls and record their targets. In
 	// general, flow analysis can't see into systemstack, but it's
 	// important to handle it for this check, so we model it
-	// directly. This has to happen before transformclosure since
+	// directly. This has to happen before transforming closures in walk since
 	// it's a lot harder to work out the argument after.
 	for _, n := range typecheck.Target.Decls {
 		if n.Op() != ir.ODCLFUNC {