Revert of [builtins] Refactor the remaining Date builtins.

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

 // Copyright 2012 the V8 project authors. All rights reserved.7
 // 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 1641 matching lines @@
 }
 
 
 void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) {
   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());
+  Register scratch = ToRegister(instr->temp());
+  Smi* index = instr->index();
+  DCHECK(object.is(a0));
+  DCHECK(result.is(v0));
+  DCHECK(!scratch.is(scratch0()));
+  DCHECK(!scratch.is(object));
+
+  if (index->value() == 0) {
+    __ lw(result, FieldMemOperand(object, JSDate::kValueOffset));
+  } else {
+    Label runtime, done;
+    if (index->value() < JSDate::kFirstUncachedField) {
+      ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
+      __ li(scratch, Operand(stamp));
+      __ lw(scratch, MemOperand(scratch));
+      __ lw(scratch0(), FieldMemOperand(object, JSDate::kCacheStampOffset));
+      __ Branch(&runtime, ne, scratch, Operand(scratch0()));
+      __ lw(result, FieldMemOperand(object, JSDate::kValueOffset +
+                                            kPointerSize * index->value()));
+      __ jmp(&done);
+    }
+    __ bind(&runtime);
+    __ PrepareCallCFunction(2, scratch);
+    __ li(a1, Operand(index));
+    __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2);
+    __ bind(&done);
+  }
+}
+
+
 MemOperand LCodeGen::BuildSeqStringOperand(Register string,
                                            LOperand* index,
                                            String::Encoding encoding) {
   if (index->IsConstantOperand()) {
     int offset = ToInteger32(LConstantOperand::cast(index));
     if (encoding == String::TWO_BYTE_ENCODING) {
       offset *= kUC16Size;
     }
     STATIC_ASSERT(kCharSize == 1);
     return FieldMemOperand(string, SeqString::kHeaderSize + offset);
@@ skipping 3956 matching lines @@
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8