From f42fae16745c6534c0d9619103dfbb3e299182e1 Mon Sep 17 00:00:00 2001
From: Victor Hernandez <vhernandez@apple.com>
Date: Thu, 21 Jan 2010 19:26:20 +0000
Subject: No need to map NULL operands of metadata

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94091 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Utils/ValueMapper.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/Transforms/Utils/ValueMapper.cpp')

diff --git a/lib/Transforms/Utils/ValueMapper.cpp b/lib/Transforms/Utils/ValueMapper.cpp
index e3ef79facc..2a79b72ba1 100644
--- a/lib/Transforms/Utils/ValueMapper.cpp
+++ b/lib/Transforms/Utils/ValueMapper.cpp
@@ -39,7 +39,7 @@ Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
     const MDNode *MD = dyn_cast<MDNode>(V);
     SmallVector<Value*, 4> Elts;
     for (unsigned i = 0; i != MD->getNumOperands(); i++)
-      Elts.push_back(MapValue(MD->getOperand(i), VM));
+      Elts.push_back(MD->getOperand(i) ? MapValue(MD->getOperand(i), VM) : NULL);
     return VM[V] = MDNode::get(V->getContext(), Elts.data(), Elts.size());
   }
 
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