X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FSupport%2FFoldingSet.cpp;h=bb0ec2defef9f1c761974484cf8cae2b09301281;hp=b8538ffe1f9fe08ba493a9a55401c282f8e4c3c5;hb=df8fbfc774ec06f4d2f8fd3e1b917d45cdac8fde;hpb=28d23b88be9cd24e1ef83ca1ae2d8d8740c918c3

diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index b8538ffe1f9..bb0ec2defef 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -232,9 +232,29 @@ FoldingSetImpl::FoldingSetImpl(unsigned Log2InitSize) {
   Buckets = AllocateBuckets(NumBuckets);
   NumNodes = 0;
 }
+
+FoldingSetImpl::FoldingSetImpl(FoldingSetImpl &&Arg)
+    : Buckets(Arg.Buckets), NumBuckets(Arg.NumBuckets), NumNodes(Arg.NumNodes) {
+  Arg.Buckets = nullptr;
+  Arg.NumBuckets = 0;
+  Arg.NumNodes = 0;
+}
+
+FoldingSetImpl &FoldingSetImpl::operator=(FoldingSetImpl &&RHS) {
+  free(Buckets); // This may be null if the set is in a moved-from state.
+  Buckets = RHS.Buckets;
+  NumBuckets = RHS.NumBuckets;
+  NumNodes = RHS.NumNodes;
+  RHS.Buckets = nullptr;
+  RHS.NumBuckets = 0;
+  RHS.NumNodes = 0;
+  return *this;
+}
+
 FoldingSetImpl::~FoldingSetImpl() {
   free(Buckets);
 }
+
 void FoldingSetImpl::clear() {
   // Set all but the last bucket to null pointers.
   memset(Buckets, 0, NumBuckets*sizeof(void*));