r234970 - in /trunk/gcc: ChangeLog testsuite/Ch...

Thu Apr 14 07:30:00 GMT 2016

Author: rguenth
Date: Thu Apr 14 07:30:53 2016
New Revision: 234970

URL: https://gcc.gnu.org/viewcvs?rev=234970&root=gcc&view=rev
Log:
2016-04-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/70623
	* tree-ssa-pre.c (changed_blocks): Make global ...
	(compute_antic): ... local here.  Move and fix worklist
	handling here.  Do not clear EDGE_DFS_BACK or call mark_dfs_back_edges.
	(compute_antic_aux): Add dumping for MAX assumed succs.  Remove
	worklist handling, dump when ANTIC_IN changed.
	(compute_partial_antic_aux): Remove worklist handling.
	(init_pre): Do not compute post dominators.  Add a comment about
	the CFG order chosen.
	(fini_pre): Do not free post dominators.

	* gcc.dg/torture/pr70623.c: New testcase.
	* gcc.dg/torture/pr70623-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr70623-2.c
    trunk/gcc/testsuite/gcc.dg/torture/pr70623.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c