Revert r97788 because it broke test/FrontendC/2010-02-16-DbgVarScope.c.

llvm-svn: 97792

1 files changed, 8 insertions, 8 deletions

diff --git a/llvm/lib/VMCore/Metadata.cpp b/llvm/lib/VMCore/Metadata.cpp
index faf83e6588e..a08c45480b6 100644
--- a/llvm/lib/VMCore/Metadata.cpp
+++ b/llvm/lib/VMCore/Metadata.cpp
@@ -110,10 +110,8 @@ MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
 MDNode::~MDNode() {
   assert((getSubclassDataFromValue() & DestroyFlag) != 0 &&
          "Not being destroyed through destroy()?");
-  LLVMContextImpl *pImpl = getType()->getContext().pImpl;
-  if (isNotUniqued()) {
-    pImpl->NonUniquedMDNodes.erase(this);
-  } else {
+  if (!isNotUniqued()) {
+    LLVMContextImpl *pImpl = getType()->getContext().pImpl;
     pImpl->MDNodeSet.RemoveNode(this);
   }
 
@@ -259,10 +257,12 @@ void MDNode::Profile(FoldingSetNodeID &ID) const {
     ID.AddPointer(getOperand(i));
 }
 
-void MDNode::setIsNotUniqued() {
-  setValueSubclassData(getSubclassDataFromValue() | NotUniquedBit);
-  LLVMContextImpl *pImpl = getType()->getContext().pImpl;
-  pImpl->NonUniquedMDNodes.insert(this);
+// replaceAllOperandsWithNull - This is used while destroying llvm context to 
+// gracefully delete all nodes. This method replaces all operands with null.
+void MDNode::replaceAllOperandsWithNull() {
+  for (MDNodeOperand *Op = getOperandPtr(this, 0), *E = Op+NumOperands;
+       Op != E; ++Op)
+    replaceOperand(Op, 0);
 }
 
 // Replace value from this node's operand list.