Add a value range analysis phase to remove bounds checks.

lib/compiler/implementation/constant_system.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.
 
 interface Operation {
   final SourceString name;
   bool isUserDefinable();
 }
 
 interface UnaryOperation extends Operation {
   /** Returns [:null:] if it was unable to fold the operation. */
   Constant fold(Constant constant);
+  apply(value);
 }
 
 interface BinaryOperation extends Operation {
   /** Returns [:null:] if it was unable to fold the operation. */
   Constant fold(Constant left, Constant right);
+  apply(left, right);
 }
 
 /**
  * A [ConstantSystem] is responsible for creating constants and folding them.
  */
 interface ConstantSystem {
   BinaryOperation get add;
   BinaryOperation get bitAnd;
   UnaryOperation get bitNot;
   BinaryOperation get bitOr;
@@ skipping 31 matching lines @@
   bool isInt(Constant constant);
   /** Returns true if the [constant] is a double at runtime. */
   bool isDouble(Constant constant);
   /** Returns true if the [constant] is a string at runtime. */
   bool isString(Constant constant);
   /** Returns true if the [constant] is a boolean at runtime. */
   bool isBool(Constant constant);
   /** Returns true if the [constant] is null at runtime. */
   bool isNull(Constant constant);
 }