X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fopt_confirms.c;h=0908cb66a57283ddd261e146c562e0936e3595e1;hb=4b01bfe0d5adc5f4d03d4b4491dc7cb928301d3f;hp=a42b1f2f6f9c324b46797530d13a57224335609c;hpb=f4cc11acb335f4c0281d6d3659dd646210319b46;p=libfirm

diff --git a/ir/opt/opt_confirms.c b/ir/opt/opt_confirms.c
index a42b1f2f6..0908cb66a 100644
--- a/ir/opt/opt_confirms.c
+++ b/ir/opt/opt_confirms.c
@@ -97,7 +97,7 @@ static tarval *compare_iv_dbg(const interval_t *l_iv, const interval_t *r_iv, pn
  * This is a often needed case, so we handle here Confirm
  * nodes too.
  */
-int value_not_zero(ir_node *n, ir_node **confirm) {
+int value_not_zero(const ir_node *n, ir_node_cnst_ptr *confirm) {
 #define RET_ON(x)  if (x) { *confirm = n; return 1; }; break
 
 	tarval *tv;
@@ -175,11 +175,11 @@ int value_not_zero(ir_node *n, ir_node **confirm) {
  * - A SymConst(entity) is NEVER a NULL pointer
  * - Confirms are evaluated
  */
-int value_not_null(ir_node *n, ir_node **confirm) {
+int value_not_null(const ir_node *n, ir_node_cnst_ptr *confirm) {
 	tarval *tv;
 
 	*confirm = NULL;
-	n  = skip_Cast(n);
+	n  = skip_Cast_const(n);
 
 	tv = value_of(n);
 	if (tarval_is_constant(tv) && ! tarval_is_null(tv))
@@ -241,7 +241,7 @@ value_classify_sign classify_value_sign(ir_node *n) {
 		}
 		break;
 	}
-	if (get_irn_op(n) != op_Confirm)
+	if (!is_Confirm(n))
 		return value_classified_unknown;
 
 	tv  = value_of(get_Confirm_bound(n));
@@ -769,8 +769,8 @@ check_null_case:
 		if ((pnc == pn_Cmp_Eq || pnc == pn_Cmp_Lg) &&
 			is_Const(right) && is_Const_null(right)) {
 			/* for == 0 or != 0 we have some special tools */
-			ir_mode *mode = get_irn_mode(left);
-			ir_node *dummy;
+			ir_mode       *mode = get_irn_mode(left);
+			const ir_node *dummy;
 			if (mode_is_reference(mode)) {
 				if (value_not_null(left, &dummy)) {
 					tv = pnc == pn_Cmp_Eq ? tarval_b_false : tarval_b_true;