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| author | Richard Guenther <rguenther@suse.de> | 2012-09-06 14:47:42 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-09-06 14:47:42 +0000 |
| commit | 511c229c6caf013aaafca49535d4c82522d289e3 (patch) | |
| tree | 115758a04c3bdab6ee264374fe7b3e672dd0650a /gcc/tree-ssa-pre.c | |
| parent | 81a14f1e73f545848cdd03fc568390a419686044 (diff) | |
| download | gcc-511c229c6caf013aaafca49535d4c82522d289e3.zip gcc-511c229c6caf013aaafca49535d4c82522d289e3.tar.gz gcc-511c229c6caf013aaafca49535d4c82522d289e3.tar.bz2 | |
re PR tree-optimization/54498 (incorrect code generation from g++ -O)
2012-09-06 Richard Guenther <rguenther@suse.de>
PR tree-optimization/54498
* tree-ssa-alias.h (get_continuation_for_phi): Add flag to
abort when reaching an already visited region.
* tree-ssa-alias.c (maybe_skip_until): Likewise. And do it.
(get_continuation_for_phi_1): Likewise.
(walk_non_aliased_vuses): When we translated the reference,
abort when we re-visit a region.
* tree-ssa-pre.c (translate_vuse_through_block): Adjust.
From-SVN: r191030
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index bb1a03d..e64d4f7 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -1291,7 +1291,7 @@ translate_vuse_through_block (VEC (vn_reference_op_s, heap) *operands, unsigned int cnt; /* Try to find a vuse that dominates this phi node by skipping non-clobbering statements. */ - vuse = get_continuation_for_phi (phi, &ref, &cnt, &visited); + vuse = get_continuation_for_phi (phi, &ref, &cnt, &visited, false); if (visited) BITMAP_FREE (visited); } |