r202826 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Sep 23 12:37:17 2013
New Revision: 202826

URL: http://gcc.gnu.org/viewcvs?rev=202826&root=gcc&view=rev
Log:
2013-09-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/58464
	* tree-ssa-pre.c (phi_trans_lookup): Remove.
	(phi_trans_add): Change to add conditionally on being not
	present.
	(phi_translate_1): Remove recursion detection here.
	(phi_translate): Pre-seed the cache with NULL to catch
	recursion here in a more generic way.
	(bitmap_find_leader): Adjust comment.
	(get_representative_for): Dump value-numbers.
	(create_expression_by_pieces): Likewise.
	(insert_into_preds_of_block): Likewise.

	* g++.dg/torture/pr58464.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr58464.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c