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Allow FoldingSet clients to pump up the initial hash size.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31377 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-11-02 14:21:26 +00:00
parent 41562398b6
commit 1f67a99260
2 changed files with 9 additions and 3 deletions
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6
lib/Support/FoldingSet.cpp
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@@ -151,8 +151,10 @@ static void **GetBucketFor(const FoldingSetImpl::NodeID &ID,
//===----------------------------------------------------------------------===//
// FoldingSetImpl Implementation
FoldingSetImpl::FoldingSetImpl() : NumNodes(0) {
NumBuckets = 64;
FoldingSetImpl::FoldingSetImpl(unsigned Log2InitSize) : NumNodes(0) {
assert(5 < Log2InitSize && Log2InitSize < 32 &&
"Initial hash table size out of range");
NumBuckets = 1 << Log2InitSize;
Buckets = new void*[NumBuckets];
memset(Buckets, 0, NumBuckets*sizeof(void*));
}