Implement date library functions in C++.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index de4a622a81ca0f8e5e61fecdfe04a4e25dc4e074..dd41bfbc77cbf8d8f10d21e63a71be4efaaf7af8 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -173,8 +173,7 @@ class LCodeGen;
   V(ForInCacheArray)                            \
   V(CheckMapValue)                              \
   V(LoadFieldByIndex)                           \
-  V(DateField)                                  \
-  V(SetDateField)
+  V(DateField)
 
 
 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)              \
@@ -1006,37 +1005,19 @@ class LValueOf: public LTemplateInstruction<1, 1, 1> {
 
 class LDateField: public LTemplateInstruction<1, 1, 1> {
  public:
-  LDateField(LOperand* date, LOperand* temp, int index) : index_(index) {
-    inputs_[0] = date;
-    temps_[0] = temp;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(DateField, "date-field")
-  DECLARE_HYDROGEN_ACCESSOR(DateField)
-
-  int index() const { return index_; }
-
- private:
-  int index_;
-};
-
-
-class LSetDateField: public LTemplateInstruction<1, 2, 1> {
- public:
-  LSetDateField(LOperand* date, LOperand* value, LOperand* temp, int index)
+  LDateField(LOperand* date, LOperand* temp, Smi* index)
       : index_(index) {
     inputs_[0] = date;
-    inputs_[1] = value;
     temps_[0] = temp;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(DateField, "date-set-field")
+  DECLARE_CONCRETE_INSTRUCTION(DateField, "date-field")
   DECLARE_HYDROGEN_ACCESSOR(DateField)
 
-  int index() const { return index_; }
+  Smi* index() const { return index_; }
 
  private:
-  int index_;
+  Smi* index_;
 };