r216065 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Oct 10 11:04:39 2014
New Revision: 216065

URL: https://gcc.gnu.org/viewcvs?rev=216065&root=gcc&view=rev
Log:
2014-10-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/63476
	* tree-ssa-pre.c (struct bb_bitmap_sets): Add vop_on_exit member.
	(BB_LIVE_VOP_ON_EXIT): New define.
	(create_expression_by_pieces): Assign VUSEs to stmts.
	(compute_avail): Track BB_LIVE_VOP_ON_EXIT.
	(pass_pre::execute): Assert virtual SSA form is up-to-date
	after insertion.

	* g++.dg/torture/pr63476.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr63476.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c