scc

commit af498cdd3737f03a77ada5172fff1f727f463b10
parent 8022f78f34e2b0532f880d2d64d363bb1e20531d
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sat, 18 Jul 2015 10:53:02 +0200

Fix constant calculation in node()

Non constant nodes make descendat non constant
independent of the other node, so we need &
and not |.

Diffstat:
M
cc1/code.c
 | 
7
++++---

1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/cc1/code.c b/cc1/code.c
@@ -321,14 +321,15 @@ node(unsigned op, Type *tp, Node *lp, Node *rp)
 	np->op = op;
 	np->type = tp;
 	np->sym = NULL;
-	np->constant = np->symbol = np->lvalue = 0;
+	np->symbol = np->lvalue = 0;
+	np->constant = 1;
 	np->left = lp;
 	np->right = rp;
 
 	if (lp)
-		np->constant |= lp->constant;
+		np->constant &= lp->constant;
 	if (rp)
-		np->constant |= rp->constant;
+		np->constant &= rp->constant;
 
 	return np;
 }