Introduce MetadataBase, a base class for MDString and MDNode.

Derive MDString directly from MetadataBase. 
Introduce new bitcode block to hold metadata.

llvm-svn: 76759

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
index 57a19061132..1a0b6ccde9f 100644
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -28,6 +28,7 @@ namespace llvm {
   class Instruction;
   class Constant;
   class GlobalValue;
+  class MetadataBase;
   class MDString;
   class MDNode;
   struct ValID;
@@ -147,7 +148,7 @@ namespace llvm {
                      bool HasLinkage, unsigned Visibility);
     bool ParseAlias(const std::string &Name, LocTy Loc, unsigned Visibility);
     bool ParseStandaloneMetadata();
-    bool ParseMDString(Constant *&S);
+    bool ParseMDString(MetadataBase *&S);
     bool ParseMDNode(Constant *&N);
 
     // Type Parsing.