2014-01-23 Basile Starynkevitch <basile@starynkevitch.net>

	{{merge using svnmerge.py with trunk GCC 4.9 svn rev.206958. All is
	well compiled.}}


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@206959 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 12 deletions

diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c
index b31b9268ead..100a2c1b7ff 100644
--- a/gcc/loop-invariant.c
+++ b/gcc/loop-invariant.c
@@ -652,14 +652,8 @@ may_assign_reg_p (rtx x)
    BODY.  */
 
 static void
-find_defs (struct loop *loop, basic_block *body)
+find_defs (struct loop *loop)
 {
-  unsigned i;
-  bitmap blocks = BITMAP_ALLOC (NULL);
-
-  for (i = 0; i < loop->num_nodes; i++)
-    bitmap_set_bit (blocks, body[i]->index);
-
   if (dump_file)
     {
       fprintf (dump_file,
@@ -670,9 +664,8 @@ find_defs (struct loop *loop, basic_block *body)
   df_remove_problem (df_chain);
   df_process_deferred_rescans ();
   df_chain_add_problem (DF_UD_CHAIN);
-  df_set_blocks (blocks);
   df_set_flags (DF_RD_PRUNE_DEAD_DEFS);
-  df_analyze ();
+  df_analyze_loop (loop);
   check_invariant_table_size ();
 
   if (dump_file)
@@ -682,8 +675,6 @@ find_defs (struct loop *loop, basic_block *body)
 	       "*****ending processing of loop %d ******\n",
 	       loop->num);
     }
-
-  BITMAP_FREE (blocks);
 }
 
 /* Creates a new invariant for definition DEF in INSN, depending on invariants
@@ -1005,7 +996,7 @@ find_invariants (struct loop *loop)
   compute_always_reached (loop, body, may_exit, always_reached);
   compute_always_reached (loop, body, has_exit, always_executed);
 
-  find_defs (loop, body);
+  find_defs (loop);
   find_invariants_body (loop, body, always_reached, always_executed);
   merge_identical_invariants ();