qbe

commit 6e70be3f22f85b02cdc30ef506f289b2700ca986
parent b58fdfec9dfbbb870552e4b50d34e8cba4ffc288
Author: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date:   Tue, 12 Apr 2016 10:49:56 -0400

simplify fillpreds() code

Diffstat:
M
ssa.c
 | 
9
++-------

1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/ssa.c b/ssa.c
@@ -87,16 +87,11 @@ filluse(Fn *fn)
 static void
 addpred(Blk *bp, Blk *bc)
 {
-	uint i;
-
 	if (!bc->pred) {
 		bc->pred = alloc(bc->npred * sizeof bc->pred[0]);
-		for (i=0; i<bc->npred; i++)
-			bc->pred[i] = 0;
+		bc->visit = 0;
 	}
-	for (i=0; bc->pred[i]; i++)
-		;
-	bc->pred[i] = bp;
+	bc->pred[bc->visit++] = bp;
 }
 
 /* fill predecessors information in blocks