From 5668e93147563c824e693255de5e58fdc398a36b Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date: Sun, 16 Aug 2015 19:18:40 -0400
Subject: [PATCH] refine the clobber code

It could very well be that the temporary we
assign already got assigned to the right
register!  Good things happen.
---
 lisc/rega.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisc/rega.c b/lisc/rega.c
index 53807d4..f571011 100644
--- a/lisc/rega.c
+++ b/lisc/rega.c
@@ -233,7 +233,7 @@ dopm(Blk *b, Ins *i, RMap *m)
 	else if (isreg(i->arg[0]))
 		for (;; i--) {
 			r = RBASE(i->arg[0].val);
-			if (BGET(m->b, r)) {
+			if (BGET(m->b, r) && rfind(m, i->to.val) != r) {
 				for (n=0; m->r[n] != r; n++)
 					assert(n+1 < m->n);
 				t = m->t[n];