Speculate on bitwise operators.

runtime/vm/token.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/token.h"
 
 #include "vm/object.h"
 
 namespace dart {
 
@@ skipping 51 matching lines @@
     default:
       return false;
   }
 }
 
 
 bool Token::IsUnaryArithmeticOperator(Token::Kind token) {
   return (token == kBIT_NOT) || (token == kNEGATE);
 }
 
+
+bool Token::IsBinaryBitwiseOperator(Token::Kind token) {
+  switch (token) {
+    case Token::kBIT_OR:
+    case Token::kBIT_XOR:
+    case Token::kBIT_AND:
+    case Token::kSHL:
+    case Token::kSHR:
+      return true;
+    default:
+      return false;
+  }
+}
+
 }  // namespace dart