Update SwiftShader to April code dump.

April code dump from Transgaming. Adds new shader compiler.
diff --git a/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h b/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h
index 2453b72..b6fc920 100644
--- a/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h
+++ b/src/LLVM/lib/Bitcode/Writer/ValueEnumerator.h
@@ -30,19 +30,17 @@
 class MDNode;
 class NamedMDNode;
 class AttrListPtr;
-class TypeSymbolTable;
 class ValueSymbolTable;
 class MDSymbolTable;
 
 class ValueEnumerator {
 public:
-  // For each type, we remember its Type* and occurrence frequency.
-  typedef std::vector<std::pair<const Type*, unsigned> > TypeList;
+  typedef std::vector<Type*> TypeList;
 
   // For each value, we remember its Value* and occurrence frequency.
   typedef std::vector<std::pair<const Value*, unsigned> > ValueList;
 private:
-  typedef DenseMap<const Type*, unsigned> TypeMapType;
+  typedef DenseMap<Type*, unsigned> TypeMapType;
   TypeMapType TypeMap;
   TypeList Types;
 
@@ -72,6 +70,11 @@
   /// When a function is incorporated, this is the size of the Values list
   /// before incorporation.
   unsigned NumModuleValues;
+
+  /// When a function is incorporated, this is the size of the MDValues list
+  /// before incorporation.
+  unsigned NumModuleMDValues;
+
   unsigned FirstFuncConstantID;
   unsigned FirstInstID;
   
@@ -82,7 +85,7 @@
 
   unsigned getValueID(const Value *V) const;
 
-  unsigned getTypeID(const Type *T) const {
+  unsigned getTypeID(Type *T) const {
     TypeMapType::const_iterator I = TypeMap.find(T);
     assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
     return I->second-1;
@@ -132,14 +135,15 @@
 private:
   void OptimizeConstants(unsigned CstStart, unsigned CstEnd);
     
+  void EnumerateMDNodeOperands(const MDNode *N);
   void EnumerateMetadata(const Value *MD);
+  void EnumerateFunctionLocalMetadata(const MDNode *N);
   void EnumerateNamedMDNode(const NamedMDNode *NMD);
   void EnumerateValue(const Value *V);
-  void EnumerateType(const Type *T);
+  void EnumerateType(Type *T);
   void EnumerateOperandType(const Value *V);
   void EnumerateAttributes(const AttrListPtr &PAL);
   
-  void EnumerateTypeSymbolTable(const TypeSymbolTable &ST);
   void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
   void EnumerateNamedMetadata(const Module *M);
 };