From e6f26a74153ba66553e836d75f7beb7ae09b102e Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 13 Oct 2009 17:00:54 +0000
Subject: Copy metadata when value is RAUW'd. It is debatable whether this is
 the right approach for custom metadata data in general. However, right now
 the only custom data user, "dbg", expects this behavior while FE is
 constructing llvm IR with debug info.

llvm-svn: 83977
---
 llvm/lib/VMCore/Value.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/VMCore/Value.cpp')

diff --git a/llvm/lib/VMCore/Value.cpp b/llvm/lib/VMCore/Value.cpp
index 03b0e6f172e..ba72af635cd 100644
--- a/llvm/lib/VMCore/Value.cpp
+++ b/llvm/lib/VMCore/Value.cpp
@@ -309,6 +309,10 @@ void Value::uncheckedReplaceAllUsesWith(Value *New) {
   // Notify all ValueHandles (if present) that this value is going away.
   if (HasValueHandle)
     ValueHandleBase::ValueIsRAUWd(this, New);
+  if (HasMetadata) {
+    LLVMContext &Context = getContext();
+    Context.pImpl->TheMetadata.ValueIsRAUWd(this, New);
+  }
 
   while (!use_empty()) {
     Use &U = *UseList;
-- 
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