dart2js cps: Cleanup.

pkg/compiler/lib/src/tree_ir/tree_ir_nodes.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_nodes;
 
 import '../constants/expressions.dart';
 import '../constants/values.dart' as values;
 import '../dart_types.dart' show DartType, InterfaceType, TypeVariableType;
 import '../elements/elements.dart';
@@ skipping 163 matching lines @@
  * A call to a static function or getter/setter to a static field.
  *
  * In contrast to the CPS-based IR, the arguments can be arbitrary expressions.
  */
 class InvokeStatic extends Expression implements Invoke {
   final Entity target;
   final List<Expression> arguments;
   final Selector selector;
   final SourceInformation sourceInformation;
 
-  /// True if the [target] is known not to diverge or read or write any
-  /// mutable state.
-  ///
-  /// This is set for calls to `getInterceptor` and `identical` to indicate
-  /// that they can be safely be moved across an impure expression
-  /// (assuming the [arguments] are not affected by the impure expression).
-  bool isEffectivelyConstant = false;
-
   InvokeStatic(this.target, this.selector, this.arguments,
-               {this.sourceInformation});
+               [this.sourceInformation]);
 
   accept(ExpressionVisitor visitor) => visitor.visitInvokeStatic(this);
   accept1(ExpressionVisitor1 visitor, arg) {
     return visitor.visitInvokeStatic(this, arg);
   }
 }
 
 /**
  * A call to a method, operator, getter, setter or index getter/setter.
  *
@@ skipping 1166 matching lines @@
 
   /// Number of uses of the current fallthrough target.
   int get useCount => _stack.last.useCount;
 
   /// Indicate that a statement will fall through to the current fallthrough
   /// target.
   void use() {
     ++_stack.last.useCount;
   }
 }