Use separate named MDNode to hold each function's local variable info.

This speeds up local variable handling in DwarfDebug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106075 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/VMCore/Module.cpp b/lib/VMCore/Module.cpp
index 94840f0..a4c3d2e 100644
--- a/lib/VMCore/Module.cpp
+++ b/lib/VMCore/Module.cpp
@@ -17,6 +17,7 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/GVMaterializer.h"
 #include "llvm/LLVMContext.h"
+#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/LeakDetector.h"
@@ -316,6 +317,12 @@ NamedMDNode *Module::getNamedMetadata(StringRef Name) const {
   return NamedMDSymTab->lookup(Name);
 }
 
+NamedMDNode *Module::getNamedMetadataUsingTwine(Twine Name) const {
+  SmallString<256> NameData;
+  StringRef NameRef = Name.toStringRef(NameData);
+   return NamedMDSymTab->lookup(NameRef);
+}
+
 /// 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.