From 1994bfea41d3cea4650b1678c13a70bf88186839 Mon Sep 17 00:00:00 2001
From: Jan Hubicka <jh@suse.cz>
Date: Thu, 18 Jan 2007 15:56:33 +0100
Subject: tree-vrp.c (finalize_jump_threads): Do not call cleanup_cfg by hand.

	* tree-vrp.c (finalize_jump_threads): Do not call cleanup_cfg by hand.
	* tree-tailcall (add_virtual_phis): Likewise.
	(optimize_tail_call): Return TODOs.
	(execute_tail_calls): Return TODOs.
	* tree-ssa-ccp (execute_fold_all_builtins): Do cleanup_cfg via TODO.
	* tree-cfgcleanup.c (cleanup_tree_cfg_loop): Return if something
	changed.
	* tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_value):
	Cleanup cfg using TODO.
	* tree-flow.h (cleanup_tree_cfg_loop): Update prototype.
	* passes.c (execute_function_todo): When cleanup did something, remove
	unused locals.
	* tree-cfg.c (pass_build_cfg): Add cleanup_cfg TODO.
	(make_edges): Don't cleanup_cfg.

From-SVN: r120900
---
 gcc/tree-tailcall.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

(limited to 'gcc/tree-tailcall.c')

diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c
index c652e58..b569678 100644
--- a/gcc/tree-tailcall.c
+++ b/gcc/tree-tailcall.c
@@ -829,8 +829,6 @@ add_virtual_phis (void)
       if (!is_gimple_reg (var) && gimple_default_def (cfun, var) != NULL_TREE)
 	mark_sym_for_renaming (var);
     }
-
-  update_ssa (TODO_update_ssa_only_virtuals);
 }
 
 /* Optimizes the tailcall described by T.  If OPT_TAILCALLS is true, also
@@ -865,7 +863,7 @@ optimize_tail_call (struct tailcall *t, bool opt_tailcalls)
 /* Optimizes tail calls in the function, turning the tail recursion
    into iteration.  */
 
-static void
+static unsigned int
 tree_optimize_tail_calls_1 (bool opt_tailcalls)
 {
   edge e;
@@ -877,7 +875,7 @@ tree_optimize_tail_calls_1 (bool opt_tailcalls)
   edge_iterator ei;
 
   if (!suitable_for_tail_opt_p ())
-    return;
+    return 0;
   if (opt_tailcalls)
     opt_tailcalls = suitable_for_tail_call_opt_p ();
 
@@ -985,20 +983,19 @@ tree_optimize_tail_calls_1 (bool opt_tailcalls)
     }
 
   if (changed)
-    {
-      free_dominance_info (CDI_DOMINATORS);
-      cleanup_tree_cfg ();
-    }
+    free_dominance_info (CDI_DOMINATORS);
 
   if (phis_constructed)
     add_virtual_phis ();
+  if (changed)
+    return TODO_cleanup_cfg | TODO_update_ssa_only_virtuals;
+  return 0;
 }
 
 static unsigned int
 execute_tail_recursion (void)
 {
-  tree_optimize_tail_calls_1 (false);
-  return 0;
+  return tree_optimize_tail_calls_1 (false);
 }
 
 static bool
@@ -1010,8 +1007,7 @@ gate_tail_calls (void)
 static unsigned int
 execute_tail_calls (void)
 {
-  tree_optimize_tail_calls_1 (true);
-  return 0;
+  return tree_optimize_tail_calls_1 (true);
 }
 
 struct tree_opt_pass pass_tail_recursion = 
-- 
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