Add getOrInsertNamedMetadata().

llvm-svn: 77646

1 files changed, 14 insertions, 3 deletions

diff --git a/llvm/lib/VMCore/Module.cpp b/llvm/lib/VMCore/Module.cpp
index 9e1622e93d0..e06e79a0268 100644
--- a/llvm/lib/VMCore/Module.cpp
+++ b/llvm/lib/VMCore/Module.cpp
@@ -289,13 +289,24 @@ GlobalAlias *Module::getNamedAlias(const StringRef &Name) const {
   return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
 }
 
-/// getNamedMetadata - Return the first named MDNode in the module with the
-/// specified name. This method returns null if a MDNode with the specified
-/// name is not found.
+/// getNamedMetadata - Return the first NamedMDNode in the module with the
+/// specified name. This method returns null if a NamedMDNode with the 
+//// specified name is not found.
 NamedMDNode *Module::getNamedMetadata(const StringRef &Name) const {
   return dyn_cast_or_null<NamedMDNode>(getValueSymbolTable().lookup(Name));
 }
 
+/// getOrInsertNamedMetadata - Return the first named MDNode in the module 
+/// with the specified name. This method returns a new NamedMDNode if a 
+/// NamedMDNode with the specified name is not found.
+NamedMDNode *Module::getOrInsertNamedMetadata(const StringRef &Name) {
+  NamedMDNode *NMD =
+    dyn_cast_or_null<NamedMDNode>(getValueSymbolTable().lookup(Name));
+  if (!NMD)
+    NMD = NamedMDNode::Create(Name, NULL, 0, this);
+  return NMD;
+}
+
 //===----------------------------------------------------------------------===//
 // Methods for easy access to the types in the module.
 //