Remove ConstantExpression.value

pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart

 // Copyright (c) 2014, 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 tree_ir_builder;
 
 import '../dart2jslib.dart' as dart2js;
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../cps_ir/cps_ir_nodes.dart' as cps_ir;
@@ skipping 472 matching lines @@
     thenStatement =
         cont.hasExactlyOneUse ? visit(cont.body) : new Break(labels[cont]);
     cont = node.falseContinuation.definition;
     assert(cont.parameters.isEmpty);
     elseStatement =
         cont.hasExactlyOneUse ? visit(cont.body) : new Break(labels[cont]);
     return new If(condition, thenStatement, elseStatement);
   }
 
   Expression visitConstant(cps_ir.Constant node) {
-    return new Constant(node.expression);
+    return new Constant(node.expression, node.value);
   }
 
   Expression visitLiteralList(cps_ir.LiteralList node) {
     return new LiteralList(
             node.type,
             translateArguments(node.values));
   }
 
   Expression visitLiteralMap(cps_ir.LiteralMap node) {
     return new LiteralMap(
@@ skipping 67 matching lines @@
 
   Statement visitSetStatic(cps_ir.SetStatic node) {
     SetStatic setStatic = new SetStatic(
         node.element,
         getVariableUse(node.value),
         node.sourceInformation);
     return new ExpressionStatement(setStatic, visit(node.body));
   }
 }