Introduce MetadataBase, a base class for MDString and MDNode.

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




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76759 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/include/llvm/Bitcode/LLVMBitCodes.h b/include/llvm/Bitcode/LLVMBitCodes.h
index 753d0ff44c..6847ac9472 100644
--- a/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/include/llvm/Bitcode/LLVMBitCodes.h
@@ -33,7 +33,8 @@ namespace bitc {
     CONSTANTS_BLOCK_ID,
     FUNCTION_BLOCK_ID,
     TYPE_SYMTAB_BLOCK_ID,
-    VALUE_SYMTAB_BLOCK_ID
+    VALUE_SYMTAB_BLOCK_ID,
+    METADATA_BLOCK_ID
   };
 
 
@@ -106,6 +107,9 @@ namespace bitc {
     VST_CODE_BBENTRY = 2   // VST_BBENTRY: [bbid, namechar x N]
   };
 
+  enum MetadataCodes {
+    METADATA_STRING  = 1   // MDString:      [values]
+  };
   // The constants block (CONSTANTS_BLOCK_ID) describes emission for each
   // constant and maintains an implicit current type value.
   enum ConstantsCodes {
@@ -128,7 +132,6 @@ namespace bitc {
     CST_CODE_CE_CMP        = 17,  // CE_CMP:        [opty, opval, opval, pred]
     CST_CODE_INLINEASM     = 18,  // INLINEASM:     [sideeffect,asmstr,conststr]
     CST_CODE_CE_SHUFVEC_EX = 19,  // SHUFVEC_EX:    [opty, opval, opval, opval]
-    CST_CODE_MDSTRING      = 20,  // MDSTRING:      [values]
     CST_CODE_MDNODE        = 21   // MDNODE:        [n x (type num, value num)]
   };