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| author | NAKAMURA Takumi <geek4civic@gmail.com> | 2013-01-05 05:14:23 +0000 |
|---|---|---|
| committer | NAKAMURA Takumi <geek4civic@gmail.com> | 2013-01-05 05:14:23 +0000 |
| commit | 5d295b41a3f4194778b6bc01a828b2115bd3a3f1 (patch) | |
| tree | 510d116669ee45c96af52db1e5598607c9581652 | |
| parent | 84be3d5a73313eb19f2f9e0512153cd2e6f46c54 (diff) | |
DenseMap: Appease -fstrict-aliasing on g++-4.4.
With DenseMapInfo<Enum>, it is miscompiled on g++-4.4.
static inline Enum getEmptyKey() { return Enum(<arbitrary int/unsigned value>); }
isEauql(getEmptyKey(), ...)
The compiler mis-assumes the return value is not aliased to Enum.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171600 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/ADT/DenseMap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/llvm/ADT/DenseMap.h b/include/llvm/ADT/DenseMap.h index 8607fb7e9cc..4a2d13786f2 100644 --- a/include/llvm/ADT/DenseMap.h +++ b/include/llvm/ADT/DenseMap.h @@ -430,7 +430,8 @@ private: incrementNumEntries(); // If we are writing over a tombstone, remember this. - if (!KeyInfoT::isEqual(TheBucket->first, getEmptyKey())) + const KeyT EmptyKey = getEmptyKey(); + if (!KeyInfoT::isEqual(TheBucket->first, EmptyKey)) decrementNumTombstones(); return TheBucket; |