Link NamedMDNodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78696 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/VMCore/Metadata.cpp b/lib/VMCore/Metadata.cpp
index 3a61d0eefb..4762a10555 100644
--- a/lib/VMCore/Metadata.cpp
+++ b/lib/VMCore/Metadata.cpp
@@ -104,6 +104,7 @@ MDNode::~MDNode() {
   dropAllReferences();
   getType()->getContext().pImpl->MDNodes.remove(this);
 }
+
 //===----------------------------------------------------------------------===//
 //NamedMDNode implementation
 //
@@ -123,6 +124,14 @@ NamedMDNode::NamedMDNode(const Twine &N, MetadataBase*const* MDs,
     ParentModule->getNamedMDList().push_back(this);
 }
 
+NamedMDNode *NamedMDNode::Create(const NamedMDNode *NMD, Module *M) {
+  assert (NMD && "Invalid source NamedMDNode!");
+  SmallVector<MetadataBase *, 4> Elems;
+  for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i)
+    Elems.push_back(NMD->getElement(i));
+  return new NamedMDNode(NMD->getName().data(), Elems.data(), Elems.size(), M);
+}
+
 /// eraseFromParent - Drop all references and remove the node from parent
 /// module.
 void NamedMDNode::eraseFromParent() {