peep: fix optimization bug

R=r CC=golang-dev https://golang.org/cl/4105058

peep: fix optimization bug
R=r CC=golang-dev https://golang.org/cl/4105058
e26b7415 · Ken Thompson · 2799e0ec · e26b7415
Commit e26b7415 authored Feb 07, 2011 by Ken Thompson
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Showing with 3 additions and 1 deletion

src/cmd/5g/peep.c src/cmd/5g/peep.c +3 -1

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--- a/src/cmd/5g/peep.c
+++ b/src/cmd/5g/peep.c
@@ -366,7 +366,8 @@ subprop(Reg *r0)
 		case ADIVD:
 		case ADIVF:
 			if(p->to.type == v1->type)
-			if(p->to.reg == v1->reg) {
+			if(p->to.reg == v1->reg)
+			if(p->scond == 0) {
 				if(p->reg == NREG)
 					p->reg = p->to.reg;
 				goto gotit;
@@ -378,6 +379,7 @@ subprop(Reg *r0)
 		case AMOVW:
 			if(p->to.type == v1->type)
 			if(p->to.reg == v1->reg)
+			if(p->scond == 0)
 				goto gotit;
 			break;