typeInformation in CreateInstance is a kind of TypeExpression

pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart

 // Copyright (c) 2013, 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.
 
 library dart2js.ir_builder;
 
 import '../closure.dart' as closure;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 2394 matching lines @@
         value = buildThis();
       } else if (field.local is closure.TypeVariableLocal) {
         closure.TypeVariableLocal variable = field.local;
         value = buildTypeVariableAccess(variable.typeVariable);
       } else {
         value = environment.lookup(field.local);
       }
       arguments.add(value);
     }
     return addPrimitive(new ir.CreateInstance(
-        classElement, arguments, const <ir.Primitive>[], sourceInformation));
+        classElement, arguments, null, sourceInformation));
   }
 
   /// Create a read access of [local] function, variable, or parameter.
   ir.Primitive buildLocalGet(LocalElement local) {
     assert(isOpen);
     ClosureLocation location = state.boxedVariables[local];
     if (location != null) {
       ir.Primitive result = new ir.GetField(environment.lookup(location.box),
                                             location.field);
       result.useElementAsHint(local);
@@ skipping 145 matching lines @@
   ir.Primitive buildTypeExpression(DartType type) {
     type = program.unaliasType(type);
     if (type is TypeVariableType) {
       return buildTypeVariableAccess(type);
     } else if (type is InterfaceType || type is FunctionType) {
       List<ir.Primitive> arguments = <ir.Primitive>[];
       type.forEachTypeVariable((TypeVariableType variable) {
         ir.Primitive value = buildTypeVariableAccess(variable);
         arguments.add(value);
       });
-      return addPrimitive(new ir.TypeExpression(type, arguments));
+      return addPrimitive(new ir.TypeExpression(type, arguments, false));
     } else if (type.treatAsDynamic) {
       return buildNullConstant();
     } else {
       // TypedefType can reach here, and possibly other things.
       throw 'unimplemented translation of type expression $type (${type.kind})';
     }
   }
 
   /// Obtains the internal type representation of the type held in [variable].
   ///
@@ skipping 246 matching lines @@
 }
 
 class SwitchCaseInfo {
   final List<ir.Primitive> constants = <ir.Primitive>[];
   final SubbuildFunction buildBody;
 
   SwitchCaseInfo(this.buildBody);
 
   void addConstant(ir.Primitive constant) => constants.add(constant);
 }