tree-ssa-pre.c (do_regular_insertion): Add FIXME markers at points of potentially huge memset overhead.

	* tree-ssa-pre.c (do_regular_insertion): Add FIXME markers at points
	of potentially huge memset overhead.
	(do_partial_partial_insertion): Likewise.
	* cfgexpand.c (gimple_expand_cfg): Use XCNEWVEC instead of xcalloc.
	* tree-vrp.c (find_assert_locations): Use XNEWVEC instead of XCNEWVEC
	for arrays to be filled by pre_and_rev_post_order_compute.  Allocate
	the right number of slots, not that number plus NUM_FIXED_BLOCKS.
	* tree-ssa-reassoc.c (init_reassoc): Likewise.
	* cfganal.c (dfs_enumerate_from): Use XNEWVEC instead of XCNEWVEC for
	array used as stack.
	* tree-ssa-sccvn.c (init_scc_vn): Use XNEWVEC instead of XCNEWVEC for
	arrays to be filled by pre_and_rev_post_order_compute.
	* cfgloopmanip.c (find_path): Use XNEWVEC instead of XCNEWVEC for
	array to be filled by dfs_enumerate_from.
	(remove_path): Likewise.
	(duplicate_loop_to_header_edge): Use XNEWVEC instead of XCNEWVEC for
	array of loops that is filled on the next lines.
	* cfgloop.c (get_loop_body): Use XNEWVEC instead of XCNEWVEC for
	array of basic blocks to be returned.
	(get_loop_body_in_dom_order): Likewise.
	(get_loop_body_in_bfs_order): Likewise.
	* tree-ssa-loop-manip.c (loop_renamer_obstack): New static obstack
	for all bitmaps used for rewriting into loop-closed SSA form.
	(add_exit_phis_var): Allocate the def bitmap on it.  Clear the livein
	bitmap at the end to release a lot of memory.
	(add_exit_phis): Allocate the exits bitmap on the new obstack.
	(get_loops_exits): Allocate the exits bitmap on the new obstack.
	(find_uses_to_rename_use): Allocate a use_blocks bitmap if ver is
	seen for the first time.
	(find_uses_to_rename): Add "???" for why the whole function must
	be re-scanned if changed_bbs is empty.
	(rewrite_into_loop_closed_ssa): Allocate bitmaps on the new obstack.
	Use XNEWVEC to allocate the use_blocks array.  Initialize the new
	obstack, and free it at the end.  Remove loop over all SSA names.
	(check_loop_closed_ssa_stmt): Look only at SSA_OP_USE operands.
	* tree-cfg.c (move_sese_region_to_fn): Use XNEWVEC instead of
	xcalloc to allocate edge_pred and edge_flag arrays.

From-SVN: r190359

1 files changed, 4 insertions, 5 deletions

diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index f8d841a..f1e9ddf 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -6467,8 +6467,8 @@ move_sese_region_to_fn (struct function *dest_cfun, basic_block entry_bb,
      EXIT_BB so that we can re-attach them to the new basic block that
      will replace the region.  */
   num_entry_edges = EDGE_COUNT (entry_bb->preds);
-  entry_pred = (basic_block *) xcalloc (num_entry_edges, sizeof (basic_block));
-  entry_flag = (int *) xcalloc (num_entry_edges, sizeof (int));
+  entry_pred = XNEWVEC (basic_block, num_entry_edges);
+  entry_flag = XNEWVEC (int, num_entry_edges);
   entry_prob = XNEWVEC (unsigned, num_entry_edges);
   i = 0;
   for (ei = ei_start (entry_bb->preds); (e = ei_safe_edge (ei)) != NULL;)
@@ -6482,9 +6482,8 @@ move_sese_region_to_fn (struct function *dest_cfun, basic_block entry_bb,
   if (exit_bb)
     {
       num_exit_edges = EDGE_COUNT (exit_bb->succs);
-      exit_succ = (basic_block *) xcalloc (num_exit_edges,
-					   sizeof (basic_block));
-      exit_flag = (int *) xcalloc (num_exit_edges, sizeof (int));
+      exit_succ = XNEWVEC (basic_block, num_exit_edges);
+      exit_flag = XNEWVEC (int, num_exit_edges);
       exit_prob = XNEWVEC (unsigned, num_exit_edges);
       i = 0;
       for (ei = ei_start (exit_bb->succs); (e = ei_safe_edge (ei)) != NULL;)