While replacing an MDNode elment, properly update MDNode's operand list.
MDNode's operand list does not include all elements.
llvm-svn: 81045
diff --git a/llvm/lib/VMCore/LLVMContext.cpp b/llvm/lib/VMCore/LLVMContext.cpp
index 887679e..7d233d9 100644
--- a/llvm/lib/VMCore/LLVMContext.cpp
+++ b/llvm/lib/VMCore/LLVMContext.cpp
@@ -62,9 +62,10 @@
return Changed;
while (!DeadMDNodes.empty()) {
- const MDNode *N = cast<MDNode>(DeadMDNodes.back()); DeadMDNodes.pop_back();
- if (N->use_empty())
- delete N;
+ Value *V = DeadMDNodes.back(); DeadMDNodes.pop_back();
+ if (const MDNode *N = dyn_cast_or_null<MDNode>(V))
+ if (N->use_empty())
+ delete N;
}
}
return Changed;