From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Wed, 30 Jul 2008 00:59:31 +0000 (+0000)
Subject: - do not kill the start block when folding control flow
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=663ac7043899977920a23a0241196cebc6be4b42;p=libfirm

- do not kill the start block when folding control flow

[r20778]
---

diff --git a/ir/opt/combo.c b/ir/opt/combo.c
index 283d668db..5275e0a50 100644
--- a/ir/opt/combo.c
+++ b/ir/opt/combo.c
@@ -1490,7 +1490,9 @@ static ir_node *get_leader(node_t *node) {
  * @param pred  the control flow exit
  */
 static int can_exchange(ir_node *pred) {
-	if (is_Jmp(pred))
+	if (is_Start(pred))
+		return 0;
+	else if (is_Jmp(pred))
 		return 1;
 	else if (get_irn_mode(pred) == mode_T) {
 		int i, k;