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DenseMap: Use an early exit when there is nothing to do in DestroyAll().

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llvm-svn: 157550
This commit is contained in:
Benjamin Kramer 2012-05-27 22:53:10 +00:00
parent 1e46062a2b
commit fb377a947e
1 changed files with 5 additions and 4 deletions
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9
include/llvm/ADT/DenseMap.h
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@ -273,6 +273,9 @@ public:
private:
void DestroyAll() {
if (NumBuckets == 0) // Nothing to do.
return;
const KeyT EmptyKey = getEmptyKey(), TombstoneKey = getTombstoneKey();
for (BucketT *P = Buckets, *E = Buckets+NumBuckets; P != E; ++P) {
if (!KeyInfoT::isEqual(P->first, EmptyKey) &&
@ -281,12 +284,10 @@ private:
P->first.~KeyT();
}
if (NumBuckets) {
#ifndef NDEBUG
memset((void*)Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
memset((void*)Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
#endif
operator delete(Buckets);
}
operator delete(Buckets);
}
void CopyFrom(const DenseMap& other) {