Fix DebugInfo replaceAllUsesWith.
Summary:
replaceAllUsesWith had been modified to allow a DbgNode value to be
replaced by itself. In that case a new node is created by copying the
current DbgNode and the copy is used as replacement value.
When that copying happens, the value stored in this->DbgNode at the end
of RAUW would be a reference to the Node that has just been deleted.
This doesn't produce any bug right now, because the DI node on which we
call RAUW won't be used again.
Reviewers: dblaikie, echristo, aprantl
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5326
llvm-svn: 217749
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index 71c32fc..4274d82 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -384,7 +384,7 @@
const Value *V = cast_or_null<Value>(DN);
Node->replaceAllUsesWith(const_cast<Value *>(V));
MDNode::deleteTemporary(Node);
- DbgNode = D;
+ DbgNode = DN;
}
/// replaceAllUsesWith - Replace all uses of the MDNode used by this