From 25aef556b4eba25158704c606a45bd60df8942b2 Mon Sep 17 00:00:00 2001
From: Bernd Schmidt <bernds@codesourcery.com>
Date: Thu, 29 Jul 2010 23:48:24 +0000
Subject: dce.c (run_word_dce): Take flag_dce into account.

	* dce.c (run_word_dce): Take flag_dce into account.  Clear and restore
	df flags as in run_fast_df_dce.

From-SVN: r162697
---
 gcc/dce.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'gcc/dce.c')

diff --git a/gcc/dce.c b/gcc/dce.c
index 19f8e42..c940adf 100644
--- a/gcc/dce.c
+++ b/gcc/dce.c
@@ -1025,11 +1025,18 @@ rest_of_handle_fast_dce (void)
 void
 run_word_dce (void)
 {
+  int old_flags;
+
+  if (!flag_dce)
+    return;
+
   timevar_push (TV_DCE);
+  old_flags = df_clear_flags (DF_DEFER_INSN_RESCAN + DF_NO_INSN_RESCAN);
   df_word_lr_add_problem ();
   init_dce (true);
   fast_dce (true);
   fini_dce (true);
+  df_set_flags (old_flags);
   timevar_pop (TV_DCE);
 }
 
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