Implement date library functions in C++.

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 167 matching lines @@
   V(TransitionElementsKind)                    \
   V(Typeof)                                    \
   V(TypeofIsAndBranch)                         \
   V(UnaryMathOperation)                        \
   V(UnknownOSRValue)                           \
   V(UseConst)                                  \
   V(ValueOf)                                   \
   V(ForInPrepareMap)                           \
   V(ForInCacheArray)                           \
   V(CheckMapValue)                             \
-  V(LoadFieldByIndex)
+  V(LoadFieldByIndex)                          \
+  V(DateField)
 
 #define GVN_FLAG_LIST(V)                       \
   V(Calls)                                     \
   V(InobjectFields)                            \
   V(BackingStoreFields)                        \
   V(ElementsKind)                              \
   V(ElementsPointer)                           \
   V(ArrayElements)                             \
   V(DoubleArrayElements)                       \
   V(SpecializedArrayElements)                  \
@@ skipping 4423 matching lines @@
   }
 
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::Tagged();
   }
 
   DECLARE_CONCRETE_INSTRUCTION(ValueOf)
 };
 
 
+class HDateField: public HUnaryOperation {
+ public:
+  HDateField(HValue* date, Smi* index)

[rossberg, 2012/03/06 15:55:50]

See above.

[ulan, 2012/03/07 10:55:21]

Done.

+      : HUnaryOperation(date), index_(index) {
+    set_representation(Representation::Tagged());
+  }
+
+  Smi* index() const { return index_; }
+
+  virtual Representation RequiredInputRepresentation(int index) {
+    return Representation::Tagged();
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(DateField)
+
+ private:
+  Smi* index_;
+};
+
+
 class HDeleteProperty: public HBinaryOperation {
  public:
   HDeleteProperty(HValue* context, HValue* obj, HValue* key)
       : HBinaryOperation(context, obj, key) {
     set_representation(Representation::Tagged());
     SetAllSideEffects();
   }
 
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::Tagged();
@@ skipping 162 matching lines @@
   DECLARE_CONCRETE_INSTRUCTION(LoadFieldByIndex);
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_