From: Andreas Zwinkau <zwinkau@kit.edu>
Date: Tue, 26 Apr 2011 12:04:00 +0000 (+0200)
Subject: Fix opt/ldst.c
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=99253d30b9d32d58de6411b583dce72ede4261fd;p=libfirm

Fix opt/ldst.c

A Load might not have a ProjM
---

diff --git a/ir/opt/ldstopt.c b/ir/opt/ldstopt.c
index f69fbf66a..fe175a9ce 100644
--- a/ir/opt/ldstopt.c
+++ b/ir/opt/ldstopt.c
@@ -709,7 +709,8 @@ static void handle_load_update(ir_node *load)
 		ir_node *mem = get_Load_mem(load);
 
 		/* a Load whose value is neither used nor exception checked, remove it */
-		exchange(info->projs[pn_Load_M], mem);
+		if (info->projs[pn_Load_M])
+			exchange(info->projs[pn_Load_M], mem);
 		if (info->projs[pn_Load_X_regular])
 			exchange(info->projs[pn_Load_X_regular], new_r_Jmp(get_nodes_block(load)));
 		kill_node(load);