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| author | Richard Guenther <rguenther@suse.de> | 2011-07-14 14:53:30 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-07-14 14:53:30 +0000 |
| commit | 1a5d20a4e01472c30e360f94b33373f1ab8e2354 (patch) | |
| tree | 334b0e2f5c2ac0f46d98e0984a48323ca8f7287f /gcc/tree-ssa-structalias.c | |
| parent | 5fbcc0ed20ecdfd980106ac22607c5baed60d234 (diff) | |
| download | gcc-1a5d20a4e01472c30e360f94b33373f1ab8e2354.zip gcc-1a5d20a4e01472c30e360f94b33373f1ab8e2354.tar.gz gcc-1a5d20a4e01472c30e360f94b33373f1ab8e2354.tar.bz2 | |
re PR tree-optimization/49651 (nested lambdas and -O3 produced incorrect integer variable increments)
2011-07-14 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49651
* tree-ssa-structalias.c (get_constraint_for_1): Properly
handle dereferences with subvariables.
* gcc.dg/torture/pr49651.c: New testcase.
From-SVN: r176274
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index 6a9732f..82f39c2 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -3258,9 +3258,18 @@ get_constraint_for_1 (tree t, VEC (ce_s, heap) **results, bool address_p, /* If we are not taking the address then make sure to process all subvariables we might access. */ + if (address_p) + return; + cs = *VEC_last (ce_s, *results); - if (address_p - || cs.type != SCALAR) + if (cs.type == DEREF) + { + /* For dereferences this means we have to defer it + to solving time. */ + VEC_last (ce_s, *results)->offset = UNKNOWN_OFFSET; + return; + } + if (cs.type != SCALAR) return; vi = get_varinfo (cs.var); |