From: Christian Würdig <chriswue@ipd.info.uni-karlsruhe.de>
Date: Sun, 11 Feb 2007 15:57:16 +0000 (+0000)
Subject: kill nodes only reachable via out edges after backend transformation
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=6be08f9b4120afddd7849bf9bcb00c4475b0296f;hp=eaef4d4c3f2de6be097fef861180be6b3cd290ca;p=libfirm

kill nodes only reachable via out edges after backend transformation
---

diff --git a/ir/be/bemain.c b/ir/be/bemain.c
index a37208a24..97b2b5ef5 100644
--- a/ir/be/bemain.c
+++ b/ir/be/bemain.c
@@ -528,7 +528,8 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 
 		be_do_stat_nodes(irg, "03 Prepare");
 
-		/* Compute loop nesting information (for weighting copies) */
+		/* Transformation may produce nodes only reachable via out edges, kill them. */
+		be_kill_dead_nodes(irg);
 		dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
 		BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));