* tree-cfg.c (tree_duplicate_sese_region): Update profile.

	* tree-optimize.c (init_tree_optimization_passes) Swap
	pass_ch and pass_profile.
	* tree-ssa-loop-ch.c (copy_loop_headers): Do not update profile
	here.  Remove rewrite_into_loop_closed_ssa call.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@99547 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 0 insertions, 21 deletions

diff --git a/gcc/tree-ssa-loop-ch.c b/gcc/tree-ssa-loop-ch.c
index 18afec1e079..378755c9eaa 100644
--- a/gcc/tree-ssa-loop-ch.c
+++ b/gcc/tree-ssa-loop-ch.c
@@ -131,12 +131,10 @@ copy_loop_headers (void)
   basic_block *bbs, *copied_bbs;
   unsigned n_bbs;
   unsigned bbs_size;
-  gcov_type entry_count, body_count, total_count;
 
   loops = loop_optimizer_init (dump_file);
   if (!loops)
     return;
-  rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
   
   /* We do not try to keep the information about irreducible regions
      up-to-date.  */
@@ -202,8 +200,6 @@ copy_loop_headers (void)
 	exit = single_succ_edge (loop_split_edge_with (exit, NULL));
 
       entry = loop_preheader_edge (loop);
-      entry_count = entry->src->count;
-      body_count = exit->dest->count;
 
       if (!tree_duplicate_sese_region (entry, exit, bbs, n_bbs, copied_bbs))
 	{
@@ -211,23 +207,6 @@ copy_loop_headers (void)
 	  continue;
 	}
 
-      /* Fix profiling info.  Scaling is done in gcov_type arithmetic to
-	 avoid losing information; this is slow, but is done at most
-	 once per loop.  We special case 0 to avoid division by 0;
-         probably other special cases exist.  */
-      total_count = body_count + entry_count;
-      if (total_count == 0LL)
-	{
-	  scale_bbs_frequencies_int (bbs, n_bbs, 0, 1);
-	  scale_bbs_frequencies_int (copied_bbs, n_bbs, 0, 1);
-	}
-      else
-	{
-	  scale_bbs_frequencies_gcov_type (bbs, n_bbs, body_count, total_count);
-	  scale_bbs_frequencies_gcov_type (copied_bbs, n_bbs, entry_count, 
-				           total_count);
-	}
-
       /* Ensure that the latch and the preheader is simple (we know that they
 	 are not now, since there was the loop exit condition.  */
       loop_split_edge_with (loop_preheader_edge (loop), NULL);