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| author | Richard Guenther <rguenther@suse.de> | 2012-09-25 07:51:51 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-09-25 07:51:51 +0000 |
| commit | b2e519796c72be6179052d738b0b645b926ab23a (patch) | |
| tree | f7a0c4b55d01c93be4fab5798dc573d9d80f6bc2 /gcc/tree-ssa-sccvn.c | |
| parent | 9fe7fbd5dfbb38e1d7fc4e3f5dea2f51eb8a9bf7 (diff) | |
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re PR tree-optimization/53663 (inconsistent inline handling of bool within union)
2012-09-25 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53663
* tree-ssa-sccvn.c (vn_reference_lookup_3): Conditional
native encode/interpret translation on VN_WALKREWRITE.
* gcc.dg/torture/pr53663-1.c: New testcase.
* gcc.dg/torture/pr53663-2.c: Likewise.
* gcc.dg/torture/pr53663-3.c: Likewise.
From-SVN: r191694
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 2e5ed74..9e62ebe 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -1555,7 +1555,8 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_) /* 3) Assignment from a constant. We can use folds native encode/interpret routines to extract the assigned bits. */ - else if (CHAR_BIT == 8 && BITS_PER_UNIT == 8 + else if (vn_walk_kind == VN_WALKREWRITE + && CHAR_BIT == 8 && BITS_PER_UNIT == 8 && ref->size == maxsize && maxsize % BITS_PER_UNIT == 0 && offset % BITS_PER_UNIT == 0 |