Separate branch on strict compare into a new IL instruction.

runtime/vm/token.h

 // 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.
 
 #ifndef VM_TOKEN_H_
 #define VM_TOKEN_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 200 matching lines @@
   }
 
   static bool IsRelationalOperator(Kind tok) {
     return kLT <= tok && tok <= kGTE;
   }
 
   static bool IsEqualityOperator(Kind tok) {
     return kEQ <= tok && tok <= kNE_STRICT;
   }
 
+  static bool IsStrictEqualityOperator(Kind tok) {
+    return (tok == kEQ_STRICT) || (tok == kNE_STRICT);
+  }
+
   static bool IsTypeTestOperator(Kind tok) {
     return (tok == kIS) || (tok == kISNOT);
   }
 
   static bool IsTypeCastOperator(Kind tok) {
     return tok == kAS;
   }
 
   static bool IsIndexOperator(Kind tok) {
     return tok == kINDEX || tok == kASSIGN_INDEX;
@@ skipping 60 matching lines @@
   static const char* name_[];
   static const char* tok_str_[];
   static const uint8_t precedence_[];
   static const Attribute attributes_[];
 };
 
 
 }  // namespace dart
 
 #endif  // VM_TOKEN_H_