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| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-02-15 13:04:47 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-02-15 13:04:47 +0000 |
| commit | 80b5fa01491cd3e957cc222cf7a5b984683dd559 (patch) | |
| tree | 6cb0402984137ab26b1c49cac3c642f930461b88 /gcc/tree-ssa-pre.c | |
| parent | a81ae224b711d2a4d011464b8876e59c69ec1b7e (diff) | |
| download | gcc-80b5fa01491cd3e957cc222cf7a5b984683dd559.tar.gz | |
2011-02-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47743
* tree-ssa-pre.c (phi_translate_1): If we didn't get a value-number
for a non-type-compatible VN lookup bail out.
* gcc.dg/torture/pr47743.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170173 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 3056723e2ec..f2466432f89 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -1691,6 +1691,12 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2, result = fold_build1 (VIEW_CONVERT_EXPR, ref->type, result); converted = true; } + else if (!result && newref + && !useless_type_conversion_p (ref->type, newref->type)) + { + VEC_free (vn_reference_op_s, heap, newoperands); + return NULL; + } if (result && is_gimple_min_invariant (result)) { |