2010-05-07 Richard Guenther <rguenther@suse.de>

	PR tree-optimization/44020
	* tree-ssa-pre.c (execute_pre): Do not remove dead inserted
	code when PRE is not yet initialized.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@159150 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a6a6be7..e455a98 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-05-07  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/44020
+       * tree-ssa-pre.c (execute_pre): Do not remove dead inserted
+       code when PRE is not yet initialized.
+
 2010-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
        * config/mips/dbxmdebug.h: Remove.

diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c
index 49dff65..514383d 100644 (file)
--- a/gcc/tree-ssa-pre.c
+++ b/gcc/tree-ssa-pre.c
@@ -4710,17 +4710,14 @@ execute_pre (bool do_fre)
   if (!run_scc_vn (do_fre))
     {
       if (!do_fre)
-       {
-         remove_dead_inserted_code ();
-         loop_optimizer_finalize ();
-       }
+       loop_optimizer_finalize ();
 
       return 0;
     }
+
   init_pre (do_fre);
   scev_initialize ();
 
-
   /* Collect and value number expressions computed in each basic block.  */
   compute_avail ();