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| author | Richard Guenther <rguenther@suse.de> | 2011-08-15 12:17:33 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-08-15 12:17:33 +0000 |
| commit | 4f9dbaaae8b46290b40ec43e56fdfc10dfd477b0 (patch) | |
| tree | 5dafed5bf7957642b3bb13ca7a9b7d75fe2a4fef /gcc/tree-ssa-sccvn.c | |
| parent | 3598da80668da2ebf4098529b8f298800997776c (diff) | |
| download | gcc-4f9dbaaae8b46290b40ec43e56fdfc10dfd477b0.zip gcc-4f9dbaaae8b46290b40ec43e56fdfc10dfd477b0.tar.gz gcc-4f9dbaaae8b46290b40ec43e56fdfc10dfd477b0.tar.bz2 | |
re PR tree-optimization/50058 (FAIL: g++.dg/tree-ssa/pr41186.C)
2011-08-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/50058
* tree-ssa-sccvn.c (vn_reference_lookup_3): Relax aggregate
copy matching.
From-SVN: r177760
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index d65b9eb..4ccc0a2 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -1485,12 +1485,11 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_) may fail when comparing types for compatibility. But we really don't care here - further lookups with the rewritten operands will simply fail if we messed up types too badly. */ - if (j == 0 && i == 0 + if (j == 0 && i >= 0 && VEC_index (vn_reference_op_s, lhs_ops, 0)->opcode == MEM_REF - && VEC_index (vn_reference_op_s, vr->operands, i)->opcode == MEM_REF - && tree_int_cst_equal - (VEC_index (vn_reference_op_s, lhs_ops, 0)->op0, - VEC_index (vn_reference_op_s, vr->operands, i)->op0)) + && VEC_index (vn_reference_op_s, lhs_ops, 0)->off != -1 + && (VEC_index (vn_reference_op_s, lhs_ops, 0)->off + == VEC_index (vn_reference_op_s, vr->operands, i)->off)) i--, j--; /* i now points to the first additional op. |