qbe

commit 8992106928756d47697ea26f88b7b5eceacf3845
parent e9dc0035aec973517649da584d6097c99f6501f5
Author: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date:   Wed, 13 Apr 2016 11:33:33 -0400

do not compute def-use links for regs

Diffstat:
M
ssa.c
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/ssa.c b/ssa.c
@@ -8,6 +8,8 @@ adduse(Tmp *tmp, int ty, Blk *b, ...)
 	int n;
 	va_list ap;
 
+	if (!tmp->use)
+		return;
 	va_start(ap, b);
 	n = tmp->nuse;
 	vgrow(&tmp->use, ++tmp->nuse);
@@ -44,7 +46,7 @@ filluse(Fn *fn)
 
 	/* todo, is this the correct file? */
 	tmp = fn->tmp;
-	for (t=0; t<fn->ntmp; t++) {
+	for (t=Tmp0; t<fn->ntmp; t++) {
 		tmp[t].ndef = 0;
 		tmp[t].nuse = 0;
 		tmp[t].phi = 0;