qbe

commit 7202c7dedfcd274130cd15549e620a9b8513ef3f
parent 1891a810e82268260891352afd6b0bd2757b02cd
Author: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date:   Wed, 22 Jul 2015 05:33:45 -0400

simplify tests for hd

Diffstat:
M
lisc/spill.c
 | 
12
+++++-------

1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/lisc/spill.c b/lisc/spill.c
@@ -234,13 +234,11 @@ spill(Fn *fn)
 		k = 4 - !req(b->jmp.arg, R);
 		v = (Bits){{0}};
 		hd = 0;
-		if (s1) {
-			if (s1->id <= n)
-				hd = s1;
-			if (s2 && s2->id <= n)
-			if (!hd || s2->id >= hd->id)
-				hd = s2;
-		}
+		if (s1 && s1->id <= n)
+			hd = s1;
+		if (s2 && s2->id <= n)
+		if (!hd || s2->id >= hd->id)
+			hd = s2;
 		if (hd) {
 			/* back-edge */
 			pl = hd->nlive;