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| author | Richard Guenther <rguenther@suse.de> | 2012-06-18 14:05:27 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-06-18 14:05:27 +0000 |
| commit | 9ef7adc086571bf7d2d3664dc7cdeaee27fc3a9b (patch) | |
| tree | 63fda7b3c2847615a9a2cc1f82d7ccaca1f96618 /gcc/tree-vect-patterns.c | |
| parent | 9b10be32fd3295d086c4a4cef68e9139a7a07f85 (diff) | |
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re PR tree-optimization/53693 (ICE in vect_get_vec_def_for_stmt_copy, at tree-vect-stmts.c:1438)
2012-06-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53693
* tree-vect-patterns.c (vect_operation_fits_smaller_type):
Reject operands with more than one use.
* g++.dg/torture/pr53693.C: New testcase.
From-SVN: r188733
Diffstat (limited to 'gcc/tree-vect-patterns.c')
| -rw-r--r-- | gcc/tree-vect-patterns.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c index 4138d41..11a5019 100644 --- a/gcc/tree-vect-patterns.c +++ b/gcc/tree-vect-patterns.c @@ -991,6 +991,11 @@ vect_operation_fits_smaller_type (gimple stmt, tree def, tree *new_type, || TREE_CODE (const_oprnd) != INTEGER_CST) return false; + /* If oprnd has other uses besides that in stmt we cannot mark it + as being part of a pattern only. */ + if (!has_single_use (oprnd)) + return false; + /* If we are in the middle of a sequence, we use DEF from a previous statement. Otherwise, OPRND has to be a result of type promotion. */ if (*new_type) |