2011-09-27 Tom de Vries <tom@codesourcery.com>

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-copyrename.c

diff --git a/gcc/tree-ssa-copyrename.c b/gcc/tree-ssa-copyrename.c
index ae4fb5f..3e01b6e 100644 (file)
--- a/gcc/tree-ssa-copyrename.c
+++ b/gcc/tree-ssa-copyrename.c
@@ -296,6 +296,8 @@ rename_ssa_copies (void)
   FILE *debug;
   bool updated = false;
 
+  memset (&stats, 0, sizeof (stats));
+
   if (dump_file && (dump_flags & TDF_DETAILS))
     debug = dump_file;
   else
@@ -355,16 +357,15 @@ rename_ssa_copies (void)
       if (!part_var)
         continue;
       var = ssa_name (x);
+      if (SSA_NAME_VAR (var) == SSA_NAME_VAR (part_var))
+       continue;
       if (debug)
         {
-         if (SSA_NAME_VAR (var) != SSA_NAME_VAR (part_var))
-           {
-             fprintf (debug, "Coalesced ");
-             print_generic_expr (debug, var, TDF_SLIM);
-             fprintf (debug, " to ");
-             print_generic_expr (debug, part_var, TDF_SLIM);
-             fprintf (debug, "\n");
-           }
+         fprintf (debug, "Coalesced ");
+         print_generic_expr (debug, var, TDF_SLIM);
+         fprintf (debug, " to ");
+         print_generic_expr (debug, part_var, TDF_SLIM);
+         fprintf (debug, "\n");
        }
       stats.coalesced++;
       replace_ssa_name_symbol (var, SSA_NAME_VAR (part_var));
@@ -399,6 +400,6 @@ struct gimple_opt_pass pass_rename_ssa_copies =
   0,                                   /* properties_provided */
   0,                                   /* properties_destroyed */
   0,                                   /* todo_flags_start */
-  TODO_dump_func | TODO_verify_ssa      /* todo_flags_finish */
+  TODO_verify_ssa                       /* todo_flags_finish */
  }
 };