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| author | Richard Biener <rguenther@suse.de> | 2012-12-10 14:00:25 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-12-10 14:00:25 +0000 |
| commit | 4bcc5786cca9aa729d2f3a94448dae22fd5f114b (patch) | |
| tree | 785d5415c7292d7967f68b5385c500d00fa0d391 /gcc/tree-vrp.c | |
| parent | 46e8409ef20445db542d1a7c6023705c343c6d05 (diff) | |
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re PR tree-optimization/55107 (GCC in an infinite loop in PRE)
2012-12-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/55107
* tree-ssa-pre.c (struct pre_stats): Remove constified field.
(bitmap_set_replace_value): Add gcc_unreachable.
(do_regular_insertion): Re-write all_same handling. Insert
an assignment instead of a PHI in this case.
(eliminate_bb): Record availability also for SSA names defined
by a constant.
(do_pre): Do not record constified events.
(execute_fre): Likewise.
* gcc.dg/torture/pr55107.c: New testcase.
* gcc.dg/tree-ssa/ssa-pre-5.c: Adjust.
From-SVN: r194358
Diffstat (limited to 'gcc/tree-vrp.c')
0 files changed, 0 insertions, 0 deletions