From: Keith Randall <khr@golang.org>
Date: Thu, 21 Apr 2016 17:02:36 +0000 (-0700)
Subject: cmd/compile: handle mem copies in amd64 backend
X-Git-Tag: go1.7beta1~560
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=f8fc3710fd4c596adac57048f705a994f199df8c;p=gostls13.git

cmd/compile: handle mem copies in amd64 backend

Fixes noopt builder.

Change-Id: If13373b2597f0fcc9b1b2f9c860f2bd043e43c6c
Reviewed-on: https://go-review.googlesource.com/22338
Reviewed-by: Keith Randall <khr@golang.org>
---

diff --git a/src/cmd/compile/internal/amd64/ssa.go b/src/cmd/compile/internal/amd64/ssa.go
index 723a2ddec5..21dbc6238c 100644
--- a/src/cmd/compile/internal/amd64/ssa.go
+++ b/src/cmd/compile/internal/amd64/ssa.go
@@ -667,6 +667,9 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.To.Offset = v.AuxInt
 
 	case ssa.OpCopy, ssa.OpAMD64MOVQconvert: // TODO: use MOVQreg for reg->reg copies instead of OpCopy?
+		if v.Type.IsMemory() {
+			return
+		}
 		x := gc.SSARegNum(v.Args[0])
 		y := gc.SSARegNum(v)
 		if x != y {