cmd/compile: remove Pkglookup in favor of Lookup

Remove one of the many lookup variants.

Change-Id: I4095aa030da4227540badd6724bbf50b728fbe93
Reviewed-on: https://go-review.googlesource.com/38990
Reviewed-by: Dave Cheney <dave@cheney.net>

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

@@ -329,19 +329,19 @@ func hashfor(t *Type) *Node {
 	case AMEM:
 		Fatalf("hashfor with AMEM type")
 	case AINTER:
-		sym = Pkglookup("interhash", Runtimepkg)
+		sym = Runtimepkg.Lookup("interhash")
 	case ANILINTER:
-		sym = Pkglookup("nilinterhash", Runtimepkg)
+		sym = Runtimepkg.Lookup("nilinterhash")
 	case ASTRING:
-		sym = Pkglookup("strhash", Runtimepkg)
+		sym = Runtimepkg.Lookup("strhash")
 	case AFLOAT32:
-		sym = Pkglookup("f32hash", Runtimepkg)
+		sym = Runtimepkg.Lookup("f32hash")
 	case AFLOAT64:
-		sym = Pkglookup("f64hash", Runtimepkg)
+		sym = Runtimepkg.Lookup("f64hash")
 	case ACPLX64:
-		sym = Pkglookup("c64hash", Runtimepkg)
+		sym = Runtimepkg.Lookup("c64hash")
 	case ACPLX128:
-		sym = Pkglookup("c128hash", Runtimepkg)
+		sym = Runtimepkg.Lookup("c128hash")
 	default:
 		sym = typesymprefix(".hash", t)
 	}

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

@@ -560,7 +560,7 @@ func makepartialcall(fn *Node, t0 *Type, meth *Sym) *Node {
 		spkg = makepartialcall_gopkg
 	}
 
-	sym := Pkglookup(p, spkg)
+	sym := spkg.Lookup(p)
 
 	if sym.Uniq() {
 		return sym.Def

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

@@ -61,7 +61,7 @@ func pushdcl(s *Sym) *Sym {
 func popdcl() {
 	d := dclstack
 	for ; d != nil && d.Name != ""; d = d.Link {
-		s := Pkglookup(d.Name, d.Pkg)
+		s := d.Pkg.Lookup(d.Name)
 		lno := s.Lastlineno
 		dcopy(s, d)
 		d.Lastlineno = lno
@@ -91,7 +91,7 @@ func dumpdclstack() {
 	for d := dclstack; d != nil; d = d.Link {
 		fmt.Printf("%6d  %p", i, d)
 		if d.Name != "" {
-			fmt.Printf("  '%s'  %v\n", d.Name, Pkglookup(d.Name, d.Pkg))
+			fmt.Printf("  '%s'  %v\n", d.Name, d.Pkg.Lookup(d.Name))
 		} else {
 			fmt.Printf("  ---\n")
 		}
@@ -860,9 +860,9 @@ func embedded(s *Sym, pkg *Pkg) *Node {
 		n = newname(lookup(name))
 	} else if s.Pkg == builtinpkg {
 		// The name of embedded builtins belongs to pkg.
-		n = newname(Pkglookup(name, pkg))
+		n = newname(pkg.Lookup(name))
 	} else {
-		n = newname(Pkglookup(name, s.Pkg))
+		n = newname(s.Pkg.Lookup(name))
 	}
 	n = nod(ODCLFIELD, n, oldname(s))
 	n.Embedded = 1
@@ -1015,7 +1015,7 @@ func methodsym(nsym *Sym, t0 *Type, iface int) *Sym {
 		spkg = methodsym_toppkg
 	}
 
-	s = Pkglookup(p, spkg)
+	s = spkg.Lookup(p)
 
 	return s
 
@@ -1046,7 +1046,7 @@ func methodname(s *Sym, recv *Type) *Sym {
 		p = fmt.Sprintf("%v.%v", tsym, s)
 	}
 
-	s = Pkglookup(p, tsym.Pkg)
+	s = tsym.Pkg.Lookup(p)
 
 	return s
 }

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

@@ -14,7 +14,7 @@ import (
 )
 
 func Sysfunc(name string) *obj.LSym {
-	return Linksym(Pkglookup(name, Runtimepkg))
+	return Linksym(Runtimepkg.Lookup(name))
 }
 
 // addrescapes tags node n as having had its address taken

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

@@ -727,7 +727,7 @@ func loadsys() {
 
 	typs := runtimeTypes()
 	for _, d := range runtimeDecls {
-		sym := Pkglookup(d.name, Runtimepkg)
+		sym := Runtimepkg.Lookup(d.name)
 		typ := typs[d.typ]
 		switch d.tag {
 		case funcTag:

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

@@ -147,7 +147,7 @@ func dumpobj1(outfile string, mode int) {
 	externdcl = tmp
 
 	if zerosize > 0 {
-		zero := Pkglookup("zero", mappkg)
+		zero := mappkg.Lookup("zero")
 		ggloblsym(zero, int32(zerosize), obj.DUPOK|obj.RODATA)
 	}
 
@@ -318,7 +318,7 @@ var slicebytes_gen int
 func slicebytes(nam *Node, s string, len int) {
 	slicebytes_gen++
 	symname := fmt.Sprintf(".gobytes.%d", slicebytes_gen)
-	sym := Pkglookup(symname, localpkg)
+	sym := localpkg.Lookup(symname)
 	sym.Def = newname(sym)
 
 	off := dsname(sym, 0, s)

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

@@ -790,7 +790,7 @@ func dcommontype(s *Sym, ot int, t *Type) int {
 
 	sizeofAlg := 2 * Widthptr
 	if dcommontype_algarray == nil {
-		dcommontype_algarray = Pkglookup("algarray", Runtimepkg)
+		dcommontype_algarray = Runtimepkg.Lookup("algarray")
 	}
 	dowidth(t)
 	alg := algtype(t)
@@ -912,18 +912,18 @@ func typesym(t *Type) *Sym {
 		name = "noalg." + name
 	}
 
-	return Pkglookup(name, typepkg)
+	return typepkg.Lookup(name)
 }
 
 // tracksym returns the symbol for tracking use of field/method f, assumed
 // to be a member of struct/interface type t.
 func tracksym(t *Type, f *Field) *Sym {
-	return Pkglookup(t.ShortString()+"."+f.Sym.Name, trackpkg)
+	return trackpkg.Lookup(t.ShortString() + "." + f.Sym.Name)
 }
 
 func typesymprefix(prefix string, t *Type) *Sym {
 	p := prefix + "." + t.ShortString()
-	s := Pkglookup(p, typepkg)
+	s := typepkg.Lookup(p)
 
 	//print("algsym: %s -> %+S\n", p, s);
 
@@ -961,7 +961,7 @@ func itabname(t, itype *Type) *Node {
 	if t == nil || (t.IsPtr() && t.Elem() == nil) || t.IsUntyped() || !itype.IsInterface() || itype.IsEmptyInterface() {
 		Fatalf("itabname(%v, %v)", t, itype)
 	}
-	s := Pkglookup(t.ShortString()+","+itype.ShortString(), itabpkg)
+	s := itabpkg.Lookup(t.ShortString() + "," + itype.ShortString())
 	if s.Def == nil {
 		n := newname(s)
 		n.Type = Types[TUINT8]
@@ -1457,7 +1457,7 @@ func dumptypestructs() {
 		// method functions. None are allocated on heap, so we can use obj.NOPTR.
 		ggloblsym(i.sym, int32(o), int16(obj.DUPOK|obj.NOPTR))
 
-		ilink := Pkglookup(i.t.ShortString()+","+i.itype.ShortString(), itablinkpkg)
+		ilink := itablinkpkg.Lookup(i.t.ShortString() + "," + i.itype.ShortString())
 		dsymptr(ilink, 0, i.sym, 0)
 		ggloblsym(ilink, int32(Widthptr), int16(obj.DUPOK|obj.RODATA))
 	}
@@ -1549,7 +1549,7 @@ func dalgsym(t *Type) *Sym {
 		// we use one algorithm table for all AMEM types of a given size
 		p := fmt.Sprintf(".alg%d", t.Width)
 
-		s = Pkglookup(p, typepkg)
+		s = typepkg.Lookup(p)
 
 		if s.AlgGen() {
 			return s
@@ -1559,20 +1559,20 @@ func dalgsym(t *Type) *Sym {
 		// make hash closure
 		p = fmt.Sprintf(".hashfunc%d", t.Width)
 
-		hashfunc = Pkglookup(p, typepkg)
+		hashfunc = typepkg.Lookup(p)
 
 		ot := 0
-		ot = dsymptr(hashfunc, ot, Pkglookup("memhash_varlen", Runtimepkg), 0)
+		ot = dsymptr(hashfunc, ot, Runtimepkg.Lookup("memhash_varlen"), 0)
 		ot = duintxx(hashfunc, ot, uint64(t.Width), Widthptr) // size encoded in closure
 		ggloblsym(hashfunc, int32(ot), obj.DUPOK|obj.RODATA)
 
 		// make equality closure
 		p = fmt.Sprintf(".eqfunc%d", t.Width)
 
-		eqfunc = Pkglookup(p, typepkg)
+		eqfunc = typepkg.Lookup(p)
 
 		ot = 0
-		ot = dsymptr(eqfunc, ot, Pkglookup("memequal_varlen", Runtimepkg), 0)
+		ot = dsymptr(eqfunc, ot, Runtimepkg.Lookup("memequal_varlen"), 0)
 		ot = duintxx(eqfunc, ot, uint64(t.Width), Widthptr)
 		ggloblsym(eqfunc, int32(ot), obj.DUPOK|obj.RODATA)
 	} else {
@@ -1659,7 +1659,7 @@ func dgcptrmask(t *Type) *Sym {
 	fillptrmask(t, ptrmask)
 	p := fmt.Sprintf("gcbits.%x", ptrmask)
 
-	sym := Pkglookup(p, Runtimepkg)
+	sym := Runtimepkg.Lookup(p)
 	if !sym.Uniq() {
 		sym.SetUniq(true)
 		for i, x := range ptrmask {
@@ -1809,7 +1809,7 @@ func zeroaddr(size int64) *Node {
 	if zerosize < size {
 		zerosize = size
 	}
-	s := Pkglookup("zero", mappkg)
+	s := mappkg.Lookup("zero")
 	if s.Def == nil {
 		x := newname(s)
 		x.Type = Types[TUINT8]

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

@@ -285,15 +285,11 @@ func (pkg *Pkg) LookupBytes(name []byte) *Sym {
 	return pkg.Lookup(str)
 }
 
-func Pkglookup(name string, pkg *Pkg) *Sym {
-	return pkg.Lookup(name)
-}
-
 func restrictlookup(name string, pkg *Pkg) *Sym {
 	if !exportname(name) && pkg != localpkg {
 		yyerror("cannot refer to unexported name %s.%s", pkg.Name, name)
 	}
-	return Pkglookup(name, pkg)
+	return pkg.Lookup(name)
 }
 
 // find all the exported symbols in package opkg
@@ -1116,7 +1112,7 @@ func (n *Node) labeledControl() *Node {
 }
 
 func syslook(name string) *Node {
-	s := Pkglookup(name, Runtimepkg)
+	s := Runtimepkg.Lookup(name)
 	if s == nil || s.Def == nil {
 		Fatalf("syslook: can't find runtime.%s", name)
 	}
@@ -1833,7 +1829,7 @@ func genwrapper(rcvr *Type, method *Field, newnam *Sym, iface int) {
 }
 
 func hashmem(t *Type) *Node {
-	sym := Pkglookup("memhash", Runtimepkg)
+	sym := Runtimepkg.Lookup("memhash")
 
 	n := newname(sym)
 	n.Class = PFUNC

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

@@ -85,7 +85,7 @@ func lexinit() {
 		if int(etype) >= len(Types) {
 			Fatalf("lexinit: %s bad etype", s.name)
 		}
-		s2 := Pkglookup(s.name, builtinpkg)
+		s2 := builtinpkg.Lookup(s.name)
 		t := Types[etype]
 		if t == nil {
 			t = typ(etype)
@@ -101,13 +101,13 @@ func lexinit() {
 
 	for _, s := range builtinFuncs {
 		// TODO(marvin): Fix Node.EType type union.
-		s2 := Pkglookup(s.name, builtinpkg)
+		s2 := builtinpkg.Lookup(s.name)
 		s2.Def = newname(s2)
 		s2.Def.Etype = EType(s.op)
 	}
 
 	for _, s := range unsafeFuncs {
-		s2 := Pkglookup(s.name, unsafepkg)
+		s2 := unsafepkg.Lookup(s.name)
 		s2.Def = newname(s2)
 		s2.Def.Etype = EType(s.op)
 	}
@@ -116,13 +116,13 @@ func lexinit() {
 	idealbool = typ(TBOOL)
 	Types[TANY] = typ(TANY)
 
-	s := Pkglookup("true", builtinpkg)
+	s := builtinpkg.Lookup("true")
 	s.Def = nodbool(true)
 	s.Def.Sym = lookup("true")
 	s.Def.Name = new(Name)
 	s.Def.Type = idealbool
 
-	s = Pkglookup("false", builtinpkg)
+	s = builtinpkg.Lookup("false")
 	s.Def = nodbool(false)
 	s.Def.Sym = lookup("false")
 	s.Def.Name = new(Name)
@@ -135,21 +135,21 @@ func lexinit() {
 	s.Def.Type = Types[TBLANK]
 	nblank = s.Def
 
-	s = Pkglookup("_", builtinpkg)
+	s = builtinpkg.Lookup("_")
 	s.Block = -100
 	s.Def = newname(s)
 	Types[TBLANK] = typ(TBLANK)
 	s.Def.Type = Types[TBLANK]
 
 	Types[TNIL] = typ(TNIL)
-	s = Pkglookup("nil", builtinpkg)
+	s = builtinpkg.Lookup("nil")
 	var v Val
 	v.U = new(NilVal)
 	s.Def = nodlit(v)
 	s.Def.Sym = s
 	s.Def.Name = new(Name)
 
-	s = Pkglookup("iota", builtinpkg)
+	s = builtinpkg.Lookup("iota")
 	s.Def = nod(OIOTA, nil, nil)
 	s.Def.Sym = s
 	s.Def.Name = new(Name)
@@ -172,7 +172,7 @@ func typeinit() {
 
 	t := typ(TUNSAFEPTR)
 	Types[TUNSAFEPTR] = t
-	t.Sym = Pkglookup("Pointer", unsafepkg)
+	t.Sym = unsafepkg.Lookup("Pointer")
 	t.Sym.Def = typenod(t)
 	t.Sym.Def.Name = new(Name)
 	dowidth(Types[TUNSAFEPTR])
@@ -384,7 +384,7 @@ func makeErrorInterface() *Type {
 
 func lexinit1() {
 	// error type
-	s := Pkglookup("error", builtinpkg)
+	s := builtinpkg.Lookup("error")
 	errortype = makeErrorInterface()
 	errortype.Sym = s
 	// TODO: If we can prove that it's safe to set errortype.Orig here
@@ -402,14 +402,14 @@ func lexinit1() {
 	// type aliases, albeit at the cost of having to deal with it everywhere).
 
 	// byte alias
-	s = Pkglookup("byte", builtinpkg)
+	s = builtinpkg.Lookup("byte")
 	bytetype = typ(TUINT8)
 	bytetype.Sym = s
 	s.Def = typenod(bytetype)
 	s.Def.Name = new(Name)
 
 	// rune alias
-	s = Pkglookup("rune", builtinpkg)
+	s = builtinpkg.Lookup("rune")
 	runetype = typ(TINT32)
 	runetype.Sym = s
 	s.Def = typenod(runetype)
@@ -417,7 +417,7 @@ func lexinit1() {
 
 	// backend-dependent builtin types (e.g. int).
 	for _, s := range typedefs {
-		s1 := Pkglookup(s.name, builtinpkg)
+		s1 := builtinpkg.Lookup(s.name)
 
 		sameas := s.sameas32
 		if *s.width == 8 {

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

@@ -868,10 +868,10 @@ opswitch:
 		}
 
 		if staticbytes == nil {
-			staticbytes = newname(Pkglookup("staticbytes", Runtimepkg))
+			staticbytes = newname(Runtimepkg.Lookup("staticbytes"))
 			staticbytes.Class = PEXTERN
 			staticbytes.Type = typArray(Types[TUINT8], 256)
-			zerobase = newname(Pkglookup("zerobase", Runtimepkg))
+			zerobase = newname(Runtimepkg.Lookup("zerobase"))
 			zerobase.Class = PEXTERN
 			zerobase.Type = Types[TUINTPTR]
 		}