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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97792 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/include/llvm/Metadata.h b/include/llvm/Metadata.h
index cecb7dadaf..e5363228a3 100644
--- a/include/llvm/Metadata.h
+++ b/include/llvm/Metadata.h
@@ -108,6 +108,9 @@ class MDNode : public Value, public FoldingSetNode {
   /// node with T.
   void replaceOperand(MDNodeOperand *Op, Value *NewVal);
   ~MDNode();
+  /// replaceAllOperandsWithNull - This is used while destroying llvm context to 
+  /// gracefully delete all nodes. This method replaces all operands with null.
+  void replaceAllOperandsWithNull();
 
 protected:
   explicit MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
@@ -163,7 +166,9 @@ private:
   bool isNotUniqued() const { 
     return (getSubclassDataFromValue() & NotUniquedBit) != 0;
   }
-  void setIsNotUniqued();
+  void setIsNotUniqued() {
+    setValueSubclassData(getSubclassDataFromValue() | NotUniquedBit);
+  }
   
   // Shadow Value::setValueSubclassData with a private forwarding method so that
   // any future subclasses cannot accidentally use it.