Use separate namespace for named metadata.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92931 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Writer/BitcodeWriter.cpp

@@ -528,10 +528,9 @@ static void WriteModuleMetadata(const ValueEnumerator &VE,
       }
 
       // Write name.
-      std::string Str = NMD->getNameStr();
-      const char *StrBegin = Str.c_str();
-      for (unsigned i = 0, e = Str.length(); i != e; ++i)
-        Record.push_back(StrBegin[i]);
+      StringRef Str = NMD->getName();
+      for (unsigned i = 0, e = Str.size(); i != e; ++i)
+        Record.push_back(Str[i]);
       Stream.EmitRecord(bitc::METADATA_NAME, Record, 0/*TODO*/);
       Record.clear();
 

lib/Bitcode/Writer/ValueEnumerator.cpp

@@ -74,9 +74,10 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
   // Enumerate types used by the type symbol table.
   EnumerateTypeSymbolTable(M->getTypeSymbolTable());
 
-  // Insert constants that are named at module level into the slot pool so that
-  // the module symbol table can refer to them...
+  // Insert constants and metadata  that are named at module level into the slot 
+  // pool so that the module symbol table can refer to them...
   EnumerateValueSymbolTable(M->getValueSymbolTable());
+  EnumerateMDSymbolTable(M->getMDSymbolTable());
 
   SmallVector<std::pair<unsigned, MDNode*>, 8> MDs;
 
@@ -196,6 +197,14 @@ void ValueEnumerator::EnumerateValueSymbolTable(const ValueSymbolTable &VST) {
     EnumerateValue(VI->getValue());
 }
 
+/// EnumerateMDSymbolTable - Insert all of the values in the specified metadata
+/// table.
+void ValueEnumerator::EnumerateMDSymbolTable(const MDSymbolTable &MST) {
+  for (MDSymbolTable::const_iterator MI = MST.begin(), ME = MST.end();
+       MI != ME; ++MI)
+    EnumerateValue(MI->getValue());
+}
+
 void ValueEnumerator::EnumerateMetadata(const MetadataBase *MD) {
   // Check to see if it's already in!
   unsigned &MDValueID = MDValueMap[MD];

lib/Bitcode/Writer/ValueEnumerator.h

@@ -30,6 +30,7 @@ class MetadataBase;
 class AttrListPtr;
 class TypeSymbolTable;
 class ValueSymbolTable;
+class MDSymbolTable;
 
 class ValueEnumerator {
 public:
@@ -133,6 +134,7 @@ private:
   
   void EnumerateTypeSymbolTable(const TypeSymbolTable &ST);
   void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
+  void EnumerateMDSymbolTable(const MDSymbolTable &ST);
 };
 
 } // End llvm namespace