cmd/compile: remove more dead code

Change-Id: Ib05a8e149db8accdb1474703cd7b7004243d91d4
Reviewed-on: https://go-review.googlesource.com/29214
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>

src/cmd/compile/internal/arm64/gsubr.go

@@ -172,13 +172,3 @@ func raddr(n *gc.Node, p *obj.Prog) {
 		p.Reg = a.Reg
 	}
 }
-
-func gcmp(as obj.As, lhs *gc.Node, rhs *gc.Node) *obj.Prog {
-	if lhs.Op != gc.OREGISTER {
-		gc.Fatalf("bad operands to gcmp: %v %v", lhs.Op, rhs.Op)
-	}
-
-	p := rawgins(as, rhs, nil)
-	raddr(lhs, p)
-	return p
-}

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

@@ -44,24 +44,6 @@ var (
 	dpc     *obj.Prog
 )
 
-func Gbranch(as obj.As, t *Type, likely int) *obj.Prog {
-	p := Prog(as)
-	p.To.Type = obj.TYPE_BRANCH
-	p.To.Val = nil
-	if as != obj.AJMP && likely != 0 && !Thearch.LinkArch.InFamily(sys.PPC64, sys.ARM64, sys.MIPS64, sys.S390X) {
-		p.From.Type = obj.TYPE_CONST
-		if likely > 0 {
-			p.From.Offset = 1
-		}
-	}
-
-	if Debug['g'] != 0 {
-		fmt.Printf("%v\n", p)
-	}
-
-	return p
-}
-
 func Prog(as obj.As) *obj.Prog {
 	var p *obj.Prog
 

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

@@ -349,15 +349,6 @@ func slicebytes(nam *Node, s string, len int) {
 	duintxx(nam.Sym, off, uint64(len), Widthint)
 }
 
-func Datastring(s string, a *obj.Addr) {
-	_, symdata := stringsym(s)
-	a.Type = obj.TYPE_MEM
-	a.Name = obj.NAME_EXTERN
-	a.Sym = symdata
-	a.Offset = 0
-	a.Etype = uint8(Simtype[TINT])
-}
-
 func datagostring(sval string, a *obj.Addr) {
 	symhdr, _ := stringsym(sval)
 	a.Type = obj.TYPE_MEM

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

@@ -1398,21 +1398,6 @@ func cheapexpr(n *Node, init *Nodes) *Node {
 	return copyexpr(n, n.Type, init)
 }
 
-func Setmaxarg(t *Type, extra int32) {
-	dowidth(t)
-	w := t.ArgWidth()
-	if w >= Thearch.MAXWIDTH {
-		Fatalf("bad argwid %v", t)
-	}
-	w += int64(extra)
-	if w >= Thearch.MAXWIDTH {
-		Fatalf("bad argwid %d + %v", extra, t)
-	}
-	if w > Maxarg {
-		Maxarg = w
-	}
-}
-
 // Code to resolve elided DOTs in embedded types.
 
 // A Dlist stores a pointer to a TFIELD Type embedded within

src/cmd/compile/internal/s390x/gsubr.go

@@ -69,53 +69,6 @@ func ginscon(as obj.As, c int64, n2 *gc.Node) {
 	rawgins(as, &n1, n2)
 }
 
-// gmvc tries to move f to t using a mvc instruction.
-// If successful it returns true, otherwise it returns false.
-func gmvc(f, t *gc.Node) bool {
-	ft := int(gc.Simsimtype(f.Type))
-	tt := int(gc.Simsimtype(t.Type))
-
-	if ft != tt {
-		return false
-	}
-
-	if f.Op != gc.OINDREG || t.Op != gc.OINDREG {
-		return false
-	}
-
-	if f.Xoffset < 0 || f.Xoffset >= 4096-8 {
-		return false
-	}
-
-	if t.Xoffset < 0 || t.Xoffset >= 4096-8 {
-		return false
-	}
-
-	var len int64
-	switch ft {
-	case gc.TUINT8, gc.TINT8, gc.TBOOL:
-		len = 1
-	case gc.TUINT16, gc.TINT16:
-		len = 2
-	case gc.TUINT32, gc.TINT32, gc.TFLOAT32:
-		len = 4
-	case gc.TUINT64, gc.TINT64, gc.TFLOAT64, gc.TPTR64:
-		len = 8
-	case gc.TUNSAFEPTR:
-		len = int64(gc.Widthptr)
-	default:
-		return false
-	}
-
-	p := gc.Prog(s390x.AMVC)
-	gc.Naddr(&p.From, f)
-	gc.Naddr(&p.To, t)
-	p.From3 = new(obj.Addr)
-	p.From3.Offset = len
-	p.From3.Type = obj.TYPE_CONST
-	return true
-}
-
 func intLiteral(n *gc.Node) (x int64, ok bool) {
 	switch {
 	case n == nil: