Add CoreClasses

pkg/compiler/lib/src/ssa/nodes.dart

 // 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.
 
 part of ssa;
 
 abstract class HVisitor<R> {
   R visitAdd(HAdd node);
   R visitAwait(HAwait node);
   R visitBitAnd(HBitAnd node);
@@ skipping 1301 matching lines @@
 
   HInstruction convertType(Compiler compiler, DartType type, int kind) {
     if (type == null) return this;
     type = type.unaliased;
     // Only the builder knows how to create [HTypeConversion]
     // instructions with generics. It has the generic type context
     // available.
     assert(type.kind != TypeKind.TYPE_VARIABLE);
     assert(type.treatAsRaw || type.isFunctionType);
     if (type.isDynamic) return this;
+    if (type.isObject) return this;
     // The type element is either a class or the void element.
     Element element = type.element;
-    if (identical(element, compiler.objectClass)) return this;
     JavaScriptBackend backend = compiler.backend;
     if (type.kind != TypeKind.INTERFACE) {
       return new HTypeConversion(type, kind, backend.dynamicType, this);
     } else if (kind == HTypeConversion.BOOLEAN_CONVERSION_CHECK) {
       // Boolean conversion checks work on non-nullable booleans.
       return new HTypeConversion(type, kind, backend.boolType, this);
     } else if (kind == HTypeConversion.CHECKED_MODE_CHECK && !type.treatAsRaw) {
       throw 'creating compound check to $type (this = ${this})';
     } else {
       TypeMask subtype = new TypeMask.subtype(element.declaration,
@@ skipping 1992 matching lines @@
 class HDynamicType extends HRuntimeType {
   HDynamicType(DynamicType dartType, TypeMask instructionType)
       : super(const <HInstruction>[], dartType, instructionType);
 
   accept(HVisitor visitor) => visitor.visitDynamicType(this);
 
   int typeCode() => HInstruction.DYNAMIC_TYPE_TYPECODE;
 
   bool typeEquals(HInstruction other) => other is HDynamicType;
 }