From 07687835bea637072221fdcbeb11cf14c43986f7 Mon Sep 17 00:00:00 2001
From: Trevor Saunders <tsaunders@mozilla.com>
Date: Fri, 1 Nov 2013 20:31:32 +0000
Subject: Replace some heap vectors with stack vectors.

From http://gcc.gnu.org/ml/gcc-patches/2013-10/msg02735.html

This patch is pretty dull, it just replaces a bunch of things of the
form
vec<T> x;
x.create (N); // N is a constant
blah blah
x.release ();
by
stack_vec<T, N> x;
blah blah

2013-11-01  Trevor Saunders  <tsaunders@mozilla.com>

gcc/
	* function.c (reorder_blocks): Convert block_stack to a stack_vec.
	* gimplify.c (gimplify_compound_lval): Likewise.
	* graphite-clast-to-gimple.c (gloog): Likewise.
	* graphite-dependences.c (loop_is_parallel_p): Likewise.
	* graphite-scop-detection.c (scopdet_basic_block_info): Likewise.
	(limit_scop); Likewise.
	(build_scops): Likewise.
	(dot_scop): Likewise.
	* graphite-sese-to-poly.c (sese_dom_walker): Likewise.
	(build_scop_drs): Likewise.
	(insert_stmts): Likewise.
	(insert_out_of_ssa_copy): Likewise.
	(remove_phi): Likewise.
	(rewrite_commutative_reductions_out_of_ssa_close_phi): Likewise.
	* hw-doloop.c (discover_loop): Likewise.
	* tree-call-cdce.c (shrink_wrap_one_built_in_call): Likewise.
	* tree-dfa.c (dump_enumerated_decls): Likewise.
	* tree-if-conv.c (if_convertable_loop_p): Likewise.
	* tree-inline.c (tree_function_versioning): Likewise.
	* tree-loop-distribution.c (build_rdg): Likewise.
	(rdg_flag_vertex_and_dependent): Likewise.
	(distribute_loop): Likewise.
	* tree-parloops.c (loop_parallel_p): Likewise.
	(eliminate_local_variables): Likewise.
	(separate_decls_in_region): Likewise.
	* tree-predcom.c (tree_predictive_commoning_loop): Likewise.
	* tree-ssa-phiopt.c (cond_if_else_store_replacement): Likewise.
	* tree-ssa-uncprop.c (uncprop_dom_walker): Likewise.
	* tree-vect-loop.c (vect_analyze_scaler_cycles_1): Likewise.
	* tree-vect-patterns.c (vect_pattern_recog): Likewise.
	* tree-vect-stmts.c (vect_mark_stmts_to_be_vectorized): Likewise.
	(vectorizable_condition): Likewise.

gcc/cp/
	* semantics.c (build_anon_member_initialization): Convert fields to be
        a stack_vec.

From-SVN: r204301
---
 gcc/tree-ssa-uncprop.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

(limited to 'gcc/tree-ssa-uncprop.c')

diff --git a/gcc/tree-ssa-uncprop.c b/gcc/tree-ssa-uncprop.c
index 71c1f5d..5255d7fb 100644
--- a/gcc/tree-ssa-uncprop.c
+++ b/gcc/tree-ssa-uncprop.c
@@ -361,15 +361,7 @@ record_equiv (tree value, tree equivalence)
 class uncprop_dom_walker : public dom_walker
 {
 public:
-  uncprop_dom_walker (cdi_direction direction)
-    : dom_walker (direction)
-  {
-    m_equiv_stack.create (2);
-  }
-  ~uncprop_dom_walker ()
-  {
-    m_equiv_stack.release ();
-  }
+  uncprop_dom_walker (cdi_direction direction) : dom_walker (direction) {}
 
   virtual void before_dom_children (basic_block);
   virtual void after_dom_children (basic_block);
@@ -380,7 +372,7 @@ private:
      leading to this block.  If no such edge equivalency exists, then we
      record NULL.  These equivalences are live until we leave the dominator
      subtree rooted at the block where we record the equivalency.  */
-  vec<tree> m_equiv_stack;
+  stack_vec<tree, 2> m_equiv_stack;
 };
 
 /* Main driver for un-cprop.  */
-- 
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