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r155584 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: rguenth at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Sun, 03 Jan 2010 12:06:02 -0000
- Subject: r155584 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: rguenth
Date: Sun Jan 3 12:06:02 2010
New Revision: 155584
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155584
Log:
2010-01-03 Richard Guenther <rguenther@suse.de>
PR tree-optimization/42438
* tree-ssa-pre.c (struct bb_bitmap_sets): Add
contains_may_not_return_call flag.
(BB_MAY_NOTRETURN): New.
(valid_in_sets): Trapping nary operations are not valid
in blocks that may not return.
(insert_into_preds_of_block): Remove check for trapping
expressions.
(compute_avail): Compute also BB_MAY_NOTRETURN.
* gcc.dg/tree-ssa/ssa-pre-27.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-27.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-pre.c