From e85cf4e5d0d8c9388d3eaaaa606b5db4e9ed62e8 Mon Sep 17 00:00:00 2001
From: dnovillo <dnovillo@138bc75d-0d04-0410-961f-82ee72b054a4>
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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204301 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/tree-if-conv.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'gcc/tree-if-conv.c')

diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c
index feb51deb882..31994b718e5 100644
--- a/gcc/tree-if-conv.c
+++ b/gcc/tree-if-conv.c
@@ -1165,7 +1165,6 @@ if_convertible_loop_p (struct loop *loop)
   bool res = false;
   vec<data_reference_p> refs;
   vec<ddr_p> ddrs;
-  vec<loop_p> loop_nest;
 
   /* Handle only innermost loop.  */
   if (!loop || loop->inner)
@@ -1199,7 +1198,7 @@ if_convertible_loop_p (struct loop *loop)
 
   refs.create (5);
   ddrs.create (25);
-  loop_nest.create (3);
+  stack_vec<loop_p, 3> loop_nest;
   res = if_convertible_loop_p_1 (loop, &loop_nest, &refs, &ddrs);
 
   if (flag_tree_loop_if_convert_stores)
-- 
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