Revert of [builtins] Refactor the remaining Date builtins.

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 4c1ce8ed0e18624919f17bae319b6d4df6c360a2..32d6b3056c42be573e8220863fdc829697321985 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -3142,6 +3142,45 @@
   Split(eq, if_true, if_false, fall_through);
 
   context()->Plug(if_true, if_false);
+}
+
+
+void FullCodeGenerator::EmitDateField(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 2);
+  DCHECK_NOT_NULL(args->at(1)->AsLiteral());
+  Smi* index = Smi::cast(*(args->at(1)->AsLiteral()->value()));
+
+  VisitForAccumulatorValue(args->at(0));  // Load the object.
+
+  Register object = x0;
+  Register result = x0;
+  Register stamp_addr = x10;
+  Register stamp_cache = x11;
+
+  if (index->value() == 0) {
+    __ Ldr(result, FieldMemOperand(object, JSDate::kValueOffset));
+  } else {
+    Label runtime, done;
+    if (index->value() < JSDate::kFirstUncachedField) {
+      ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
+      __ Mov(stamp_addr, stamp);
+      __ Ldr(stamp_addr, MemOperand(stamp_addr));
+      __ Ldr(stamp_cache, FieldMemOperand(object, JSDate::kCacheStampOffset));
+      __ Cmp(stamp_addr, stamp_cache);
+      __ B(ne, &runtime);
+      __ Ldr(result, FieldMemOperand(object, JSDate::kValueOffset +
+                                             kPointerSize * index->value()));
+      __ B(&done);
+    }
+
+    __ Bind(&runtime);
+    __ Mov(x1, index);
+    __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2);
+    __ Bind(&done);
+  }
+
+  context()->Plug(result);
 }