Revert of [builtins] Refactor the remaining Date builtins.

src/crankshaft/x64/lithium-codegen-x64.cc

Index: src/crankshaft/x64/lithium-codegen-x64.cc
diff --git a/src/crankshaft/x64/lithium-codegen-x64.cc b/src/crankshaft/x64/lithium-codegen-x64.cc
index 30d47c8da09e2beb3656c8f13e5a9964edf3f95b..c758812b163b785683d6e01e4827732f44814406 100644
--- a/src/crankshaft/x64/lithium-codegen-x64.cc
+++ b/src/crankshaft/x64/lithium-codegen-x64.cc
@@ -1664,6 +1664,44 @@
   Register result = ToRegister(instr->result());
   Register map = ToRegister(instr->value());
   __ EnumLength(result, map);
+}
+
+
+void LCodeGen::DoDateField(LDateField* instr) {
+  Register object = ToRegister(instr->date());
+  Register result = ToRegister(instr->result());
+  Smi* index = instr->index();
+  DCHECK(object.is(result));
+  DCHECK(object.is(rax));
+
+  if (FLAG_debug_code) {
+    __ AssertNotSmi(object);
+    __ CmpObjectType(object, JS_DATE_TYPE, kScratchRegister);
+    __ Check(equal, kOperandIsNotADate);
+  }
+
+  if (index->value() == 0) {
+    __ movp(result, FieldOperand(object, JSDate::kValueOffset));
+  } else {
+    Label runtime, done;
+    if (index->value() < JSDate::kFirstUncachedField) {
+      ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
+      Operand stamp_operand = __ ExternalOperand(stamp);
+      __ movp(kScratchRegister, stamp_operand);
+      __ cmpp(kScratchRegister, FieldOperand(object,
+                                             JSDate::kCacheStampOffset));
+      __ j(not_equal, &runtime, Label::kNear);
+      __ movp(result, FieldOperand(object, JSDate::kValueOffset +
+                                           kPointerSize * index->value()));
+      __ jmp(&done, Label::kNear);
+    }
+    __ bind(&runtime);
+    __ PrepareCallCFunction(2);
+    __ movp(arg_reg_1, object);
+    __ Move(arg_reg_2, index, Assembler::RelocInfoNone());
+    __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2);
+    __ bind(&done);
+  }
 }