Clone named metadata while cloning a module.

Reapply Bob's patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106560 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Utils/CloneModule.cpp b/lib/Transforms/Utils/CloneModule.cpp
index b87c082793e067c8df47836cbf77cde12526c9a2..1809bbb32012f7b479fbb67602c58ef45ab5251d 100644 (file)
--- a/lib/Transforms/Utils/CloneModule.cpp
+++ b/lib/Transforms/Utils/CloneModule.cpp
@@ -122,6 +122,17 @@ Module *llvm::CloneModule(const Module *M,
     if (const Constant* C = I->getAliasee())
       GA->setAliasee(cast<Constant>(MapValue(C, ValueMap)));
   }
+
+  // And named metadata....
+  for (Module::const_named_metadata_iterator I = M->named_metadata_begin(),
+         E = M->named_metadata_end(); I != E; ++I) {
+    const NamedMDNode &NMD = *I;
+    SmallVector<MDNode*, 4> MDs;
+    for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i)
+      MDs.push_back(cast<MDNode>(MapValue(NMD.getOperand(i), ValueMap)));
+    NamedMDNode::Create(New->getContext(), NMD.getName(),
+                        MDs.data(), MDs.size(), New);
+  }
   
   return New;
 }