[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 32d6b3056c42be573e8220863fdc829697321985..4c1ce8ed0e18624919f17bae319b6d4df6c360a2 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -3145,45 +3145,6 @@ void FullCodeGenerator::EmitIsDate(CallRuntime* expr) {
 }
 
 
-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);
-}
-
-
 void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK_EQ(3, args->length());