Allow FoldingSet clients to pump up the initial hash size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index 1bd2014..a569e1a 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -151,8 +151,10 @@
//===----------------------------------------------------------------------===//
// 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*));
}