From: Julian Oppermann <julian.oppermann@student.kit.edu>
Date: Tue, 28 Jun 2011 12:10:08 +0000 (+0200)
Subject: Don't combine blocks if the first one ends with a Raise.
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=bc47e313bcf032234f688e43be2e7308af537867;p=libfirm

Don't combine blocks if the first one ends with a Raise.
---

diff --git a/ir/opt/combo.c b/ir/opt/combo.c
index 448d2d6b6..903f875db 100644
--- a/ir/opt/combo.c
+++ b/ir/opt/combo.c
@@ -2975,6 +2975,11 @@ static int can_exchange(ir_node *pred, ir_node *block)
 		return 0;
 	else if (is_Jmp(pred))
 		return 1;
+	else if (is_Raise(pred)) {
+		/* Raise is a tuple and usually has only one reachable ProjX,
+		 * but it must not be eliminated like a Jmp */
+		return 0;
+	}
 	else if (get_irn_mode(pred) == mode_T) {
 		/* if the predecessor block has more than one
 		   reachable outputs we cannot remove the block */