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| author | Richard Biener <rguenther@suse.de> | 2018-01-08 13:22:56 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-01-08 13:22:56 +0000 |
| commit | e207c07997748ec104a1caf295e66abb75f0eb3f (patch) | |
| tree | 261c615c8ee986617e1b7844d0732da8824d10be /gcc/tree-ssa-pre.c | |
| parent | 131a0e78b01cf4a280d0ad861e75ef35eb050d29 (diff) | |
| download | gcc-e207c07997748ec104a1caf295e66abb75f0eb3f.zip gcc-e207c07997748ec104a1caf295e66abb75f0eb3f.tar.gz gcc-e207c07997748ec104a1caf295e66abb75f0eb3f.tar.bz2 | |
re PR tree-optimization/83685 (ICE: SSA corruption)
2018-01-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/83685
* tree-ssa-pre.c (create_expression_by_pieces): Do not insert
references to abnormals.
* gcc.dg/torture/pr83685.c: New testcase.
From-SVN: r256339
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 63c2a6a..55295e1 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -2697,6 +2697,8 @@ create_expression_by_pieces (basic_block block, pre_expr expr, that value numbering saw through. */ case NAME: folded = PRE_EXPR_NAME (expr); + if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (folded)) + return NULL_TREE; if (useless_type_conversion_p (exprtype, TREE_TYPE (folded))) return folded; break; |