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cmd/compile: cleanup genwrapper slightly

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ORETJMP doesn't need an ONAME if we just set the target method on Sym
instead of Left. Conveniently, this is where fmt.go was looking for it
anyway.

Change the iface parameter and global compiling_wrappers to bool.

Passes toolstash-check.

Change-Id: I5333f8bcb4e06bf8161808041125eb95c439aafe
Reviewed-on: https://go-review.googlesource.com/68252
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2017-10-04 11:42:37 -07:00
parent a92a77c56f
commit 31a3b719a0
5 changed files with 14 additions and 16 deletions
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8
src/cmd/compile/internal/gc/subr.go
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@ -1671,7 +1671,7 @@ func structargs(tl *types.Type, mustname bool) []*Node {
// rcvr - U
// method - M func (t T)(), a TFIELD type struct
// newnam - the eventual mangled name of this function
func genwrapper(rcvr *types.Type, method *types.Field, newnam *types.Sym, iface int) {
func genwrapper(rcvr *types.Type, method *types.Field, newnam *types.Sym, iface bool) {
if false && Debug['r'] != 0 {
fmt.Printf("genwrapper rcvrtype=%v method=%v newnam=%v\n", rcvr, method, newnam)
}
@ -1688,7 +1688,7 @@ func genwrapper(rcvr *types.Type, method *types.Field, newnam *types.Sym, iface
t := nod(OTFUNC, nil, nil)
l := []*Node{this}
if iface != 0 && rcvr.Width < int64(Widthptr) {
if iface && rcvr.Width < int64(Widthptr) {
// Building method for interface table and receiver
// is smaller than the single pointer-sized word
// that the interface call will pass in.
@ -1746,9 +1746,7 @@ func genwrapper(rcvr *types.Type, method *types.Field, newnam *types.Sym, iface
as := nod(OAS, this.Left, nod(OCONVNOP, dot, nil))
as.Right.Type = rcvr
fn.Nbody.Append(as)
n := nod(ORETJMP, nil, nil)
n.Left = newname(methodsym(method.Sym, methodrcvr, false))
fn.Nbody.Append(n)
fn.Nbody.Append(nodSym(ORETJMP, nil, methodsym(method.Sym, methodrcvr, false)))
// When tail-calling, we can't use a frame pointer.
fn.Func.SetNoFramePointer(true)
} else {