tree-pass.h (make_pass_dce_loop): Remove.

2014-06-18  Richard Biener  <rguenther@suse.de>

	* tree-pass.h (make_pass_dce_loop): Remove.
	* passes.def: Replace pass_dce_loop with pass_dce.
	* tree-ssa-dce.c (perform_tree_ssa_dce): If something
	changed free niter estimates and reset the scev cache.
	(tree_ssa_dce_loop, pass_data_dce_loop, pass_dce_loop,
	make_pass_dce_loop): Remove.
	* tree-ssa-copy.c: Include tree-ssa-loop-niter.h.
	(fini_copy_prop): Return whether something changed.  Always
	let substitute_and_fold perform DCE and free niter estimates
	and reset the scev cache if so.
	(execute_copy_prop): If sth changed schedule cleanup-cfg.
	(pass_data_copy_prop): Do not unconditionally schedule
	cleanup-cfg or update-ssa.

	* gcc.dg/vect/vect.exp: Remove dump-tree-dceloop-* processing.
	* gcc.dg/vect/dump-tree-dceloop-pr26359.c: Rename to ...
	* gcc.dg/vect/pr26359.c: ... this and adjust appropriately.

From-SVN: r211781

1 files changed, 6 insertions, 52 deletions

diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c
index 4969b11..171d216 100644
--- a/gcc/tree-ssa-dce.c
+++ b/gcc/tree-ssa-dce.c
@@ -1479,7 +1479,12 @@ perform_tree_ssa_dce (bool aggressive)
   tree_dce_done (aggressive);
 
   if (something_changed)
-    return TODO_update_ssa | TODO_cleanup_cfg;
+    {
+      free_numbers_of_iterations_estimates ();
+      if (scev_initialized_p)
+	scev_reset ();
+      return TODO_update_ssa | TODO_cleanup_cfg;
+    }
   return 0;
 }
 
@@ -1491,19 +1496,6 @@ tree_ssa_dce (void)
 }
 
 static unsigned int
-tree_ssa_dce_loop (void)
-{
-  unsigned int todo;
-  todo = perform_tree_ssa_dce (/*aggressive=*/false);
-  if (todo)
-    {
-      free_numbers_of_iterations_estimates ();
-      scev_reset ();
-    }
-  return todo;
-}
-
-static unsigned int
 tree_ssa_cd_dce (void)
 {
   return perform_tree_ssa_dce (/*aggressive=*/optimize >= 2);
@@ -1549,44 +1541,6 @@ make_pass_dce (gcc::context *ctxt)
 
 namespace {
 
-const pass_data pass_data_dce_loop =
-{
-  GIMPLE_PASS, /* type */
-  "dceloop", /* name */
-  OPTGROUP_NONE, /* optinfo_flags */
-  true, /* has_execute */
-  TV_TREE_DCE, /* tv_id */
-  ( PROP_cfg | PROP_ssa ), /* properties_required */
-  0, /* properties_provided */
-  0, /* properties_destroyed */
-  0, /* todo_flags_start */
-  0, /* todo_flags_finish */
-};
-
-class pass_dce_loop : public gimple_opt_pass
-{
-public:
-  pass_dce_loop (gcc::context *ctxt)
-    : gimple_opt_pass (pass_data_dce_loop, ctxt)
-  {}
-
-  /* opt_pass methods: */
-  opt_pass * clone () { return new pass_dce_loop (m_ctxt); }
-  virtual bool gate (function *) { return flag_tree_dce != 0; }
-  virtual unsigned int execute (function *) { return tree_ssa_dce_loop (); }
-
-}; // class pass_dce_loop
-
-} // anon namespace
-
-gimple_opt_pass *
-make_pass_dce_loop (gcc::context *ctxt)
-{
-  return new pass_dce_loop (ctxt);
-}
-
-namespace {
-
 const pass_data pass_data_cd_dce =
 {
   GIMPLE_PASS, /* type */