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| author | Chandler Carruth <chandlerc@gmail.com> | 2013-11-26 00:44:36 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2013-11-26 00:44:36 +0000 |
| commit | b30824e1b97b9d2b4c8e11a5d684bef5b816b887 (patch) | |
| tree | 20724b4f0c24708a53b9ab2b026b55e74ba70634 /lib/Support/SmallPtrSet.cpp | |
| parent | 8037485f166c333d82a1174d70121af0f488bce5 (diff) | |
| download | llvm-b30824e1b97b9d2b4c8e11a5d684bef5b816b887.tar.gz llvm-b30824e1b97b9d2b4c8e11a5d684bef5b816b887.tar.bz2 llvm-b30824e1b97b9d2b4c8e11a5d684bef5b816b887.tar.xz | |
Fix a self-memcpy which only breaks under Valgrind's memcpy
implementation. Silliness, but it'll be a trivial performance
optimization. This should clear up a failure on the vg_leak bot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195704 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/SmallPtrSet.cpp')
| -rw-r--r-- | lib/Support/SmallPtrSet.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Support/SmallPtrSet.cpp b/lib/Support/SmallPtrSet.cpp index e37e23b7bb..fa8d91545e 100644 --- a/lib/Support/SmallPtrSet.cpp +++ b/lib/Support/SmallPtrSet.cpp @@ -218,6 +218,9 @@ SmallPtrSetImpl::SmallPtrSetImpl(const void **SmallStorage, unsigned SmallSize, /// CopyFrom - implement operator= from a smallptrset that has the same pointer /// type, but may have a different small size. void SmallPtrSetImpl::CopyFrom(const SmallPtrSetImpl &RHS) { + if (&RHS == this) + return; + if (isSmall() && RHS.isSmall()) assert(CurArraySize == RHS.CurArraySize && "Cannot assign sets with different small sizes"); |