diff options
| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2016-11-02 09:25:22 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2016-11-02 09:25:22 +0000 |
| commit | 63e523d6f0853765adc332c7a68a8e6b16971d6b (patch) | |
| tree | aedc40b214eadb2e102ee0d7a959c8b882146450 /gcc/gimple-ssa-store-merging.c | |
| parent | 04ddfe064b58a9ce69a332942d51722dfb13db66 (diff) | |
| download | gcc-63e523d6f0853765adc332c7a68a8e6b16971d6b.zip gcc-63e523d6f0853765adc332c7a68a8e6b16971d6b.tar.gz gcc-63e523d6f0853765adc332c7a68a8e6b16971d6b.tar.bz2 | |
PR tree-optimization/78162: Reject negative offsets in store merging early
PR tree-optimization/78162
* gimple-ssa-store-merging.c (execute): Mark stores with bitpos < 0
as invalid.
* gcc.c-torture/compile/pr78162.c: New test.
From-SVN: r241778
Diffstat (limited to 'gcc/gimple-ssa-store-merging.c')
| -rw-r--r-- | gcc/gimple-ssa-store-merging.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/gimple-ssa-store-merging.c b/gcc/gimple-ssa-store-merging.c index 97af141..feba907 100644 --- a/gcc/gimple-ssa-store-merging.c +++ b/gcc/gimple-ssa-store-merging.c @@ -1361,7 +1361,7 @@ pass_store_merging::execute (function *fun) &unsignedp, &reversep, &volatilep); /* As a future enhancement we could handle stores with the same base and offset. */ - bool invalid = offset || reversep + bool invalid = offset || reversep || bitpos < 0 || ((bitsize > MAX_BITSIZE_MODE_ANY_INT) && (TREE_CODE (rhs) != INTEGER_CST)) || !rhs_valid_for_store_merging_p (rhs) |