[runtime] Drop FIRST/LAST_NONCALLABLE_SPEC_OBJECT instance type range.

src/objects.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 59 matching lines @@
 }
 
 
 Handle<HeapType> Object::OptimalType(Isolate* isolate,
                                      Representation representation) {
   if (representation.IsNone()) return HeapType::None(isolate);
   if (FLAG_track_field_types) {
     if (representation.IsHeapObject() && IsHeapObject()) {
       // We can track only JavaScript objects with stable maps.
       Handle<Map> map(HeapObject::cast(this)->map(), isolate);
-      if (map->is_stable() &&
-          map->instance_type() >= FIRST_NONCALLABLE_SPEC_OBJECT_TYPE &&
-          map->instance_type() <= LAST_NONCALLABLE_SPEC_OBJECT_TYPE) {
+      if (map->is_stable() && map->IsJSReceiverMap()) {
         return HeapType::Class(map, isolate);
       }
     }
   }
   return HeapType::Any(isolate);
 }
 
 
 MaybeHandle<JSReceiver> Object::ToObject(Isolate* isolate,
                                          Handle<Object> object,
@@ skipping 19265 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8