Add getOrInsertNamedMetadata().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77646 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 22 insertions, 6 deletions

diff --git a/include/llvm/Module.h b/include/llvm/Module.h
index 0f8722dc..8b0c104 100644
--- a/include/llvm/Module.h
+++ b/include/llvm/Module.h
@@ -303,11 +303,16 @@ public:
 /// @name Named Metadata Accessors
 /// @{
 public:
-  /// 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 *getNamedMetadata(const StringRef &Name) const;
 
+  /// 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 *getOrInsertNamedMetadata(const StringRef &Name);
+
 /// @}
 /// @name Type Accessors
 /// @{
diff --git a/lib/VMCore/Module.cpp b/lib/VMCore/Module.cpp
index 9e1622e..e06e79a 100644
--- a/lib/VMCore/Module.cpp
+++ b/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.
 //