X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Fjumpthreading.c;h=7561ded9623914b76023a2694517c120d631e3a3;hb=b27ae245166bb695bc4e418ff416d91bc37d0f28;hp=34aff8a39e3510fc716f30f2de2390390bb70e54;hpb=ae9fd2c229cc7f4c724ce9ccc9263c16d77670fe;p=libfirm

diff --git a/ir/opt/jumpthreading.c b/ir/opt/jumpthreading.c
index 34aff8a39..7561ded96 100644
--- a/ir/opt/jumpthreading.c
+++ b/ir/opt/jumpthreading.c
@@ -716,6 +716,10 @@ static void thread_jumps(ir_node* block, void* data)
 	if (copy_block == NULL)
 		return;
 
+	/* We might thread the condition block of an infinite loop,
+	 * such that there is no path to End anymore. */
+	keep_alive(block);
+
 	/* we have to remove the edge towards the pred as the pred now
 	 * jumps into the true_block. We also have to shorten Phis
 	 * in our block because of this */
@@ -768,7 +772,6 @@ void opt_jumpthreading(ir_graph* irg)
 		/* control flow changed, some blocks may become dead */
 		set_irg_doms_inconsistent(irg);
 		set_irg_extblk_inconsistent(irg);
-		set_irg_loopinfo_inconsistent(irg);
 		set_irg_entity_usage_state(irg, ir_entity_usage_not_computed);
 	}
 }