Make frequent type checks (instanceof) faster by adding dedicated instanceof methods; improves dart…

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 14880 matching lines @@
       (type_class() == Type::Handle(Type::Int32x4()).type_class());
 }
 
 
 bool AbstractType::IsNumberType() const {
   return HasResolvedTypeClass() &&
       (type_class() == Type::Handle(Type::Number()).type_class());
 }
 
 
+bool AbstractType::IsSmiType() const {
+  return HasResolvedTypeClass() &&
+      (type_class() == Type::Handle(Type::SmiType()).type_class());
+}
+
+
 bool AbstractType::IsStringType() const {
   return HasResolvedTypeClass() &&
       (type_class() == Type::Handle(Type::StringType()).type_class());
 }
 
 
 bool AbstractType::IsFunctionType() const {
   return HasResolvedTypeClass() &&
       (type_class() == Type::Handle(Type::Function()).type_class());
 }
@@ skipping 6263 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart