From: Jan Hubicka <jh@suse.cz>
Date: Tue, 28 Jul 2009 16:37:50 +0000 (+0200)
Subject: re PR tree-optimization/40759 (segfault in useless_type_conversion_p)
X-Git-Tag: releases/gcc-4.5.0~4304
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b29c2ffde02ef878d8bfccb6520decd7758463cd;p=thirdparty%2Fgcc.git

re PR tree-optimization/40759 (segfault in useless_type_conversion_p)


	PR tree-optimization/40759
	* tree-ssa-dce.c (mark_virtual_phi_result_for_renaming): Mark all uses
	for renaming.

From-SVN: r150168
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a20aed1230e1..fc6cf1d3828c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-07-28  Jan Hubicka  <jh@suse.cz>
+
+	PR tree-optimization/40759
+	* tree-ssa-dce.c (mark_virtual_phi_result_for_renaming): Mark all uses
+	for renaming.
+
 2009-07-27  DJ Delorie  <dj@redhat.com>
 
 	* config/mep/mep.c (mep_expand_builtin_saveregs): Make sure 64-bit
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c
index bbf37f7a0285..c1f4e7f647b4 100644
--- a/gcc/tree-ssa-dce.c
+++ b/gcc/tree-ssa-dce.c
@@ -828,9 +828,6 @@ mark_virtual_phi_result_for_renaming (gimple phi)
     }
   FOR_EACH_IMM_USE_STMT (stmt, iter, gimple_phi_result (phi))
     {
-      if (gimple_code (stmt) != GIMPLE_PHI
-	  && !gimple_plf (stmt, STMT_NECESSARY))
-        continue;
       FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
         SET_USE (use_p, SSA_NAME_VAR (gimple_phi_result (phi)));
       update_stmt (stmt);