Specialize string equality for various string classes. Implement intrinsics for string equal…

runtime/vm/intrinsifier.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.
 // Class for intrinsifying functions.
 
 #ifndef VM_INTRINSIFIER_H_
 #define VM_INTRINSIFIER_H_
 
 #include "vm/allocation.h"
 
@@ skipping 37 matching lines @@
   V(Object, ==, Object_equal, 936042315)                                       \
   V(_StringBase, get:hashCode, String_getHashCode, 654543028)                  \
   V(_StringBase, get:isEmpty, String_getIsEmpty, 879849436)                    \
   V(_StringBase, get:length, String_getLength, 1483520063)                     \
   V(_StringBase, codeUnitAt, String_codeUnitAt, 1958436584)                    \
   V(_OneByteString, get:hashCode, OneByteString_getHashCode, 1236464016)       \
   V(_OneByteString, _substringUncheckedNative,                                 \
       OneByteString_substringUnchecked, 25652388)                              \
   V(_OneByteString, _setAt, OneByteString_setAt, 308408714)                    \
   V(_OneByteString, _allocate, OneByteString_allocate, 1744068081)             \
+  V(_OneByteString, ==, OneByteString_equality, 1064139944)                    \
+  V(_TwoByteString, ==, TwoByteString_equality, 1616855207)                    \
 
 
 #define CORE_INTEGER_LIB_INTRINSIC_LIST(V)                                     \
   V(_IntegerImplementation, _addFromInteger, Integer_addFromInteger,           \
     740884607)                                                                 \
   V(_IntegerImplementation, +, Integer_add, 772815665)                         \
   V(_IntegerImplementation, _subFromInteger, Integer_subFromInteger,           \
     584777821)                                                                 \
   V(_IntegerImplementation, -, Integer_sub, 1938559678)                        \
   V(_IntegerImplementation, _mulFromInteger, Integer_mulFromInteger,           \
@@ skipping 86 matching lines @@
   CORE_INTEGER_LIB_INTRINSIC_LIST(DECLARE_FUNCTION)
   MATH_LIB_INTRINSIC_LIST(DECLARE_FUNCTION)
   TYPED_DATA_LIB_INTRINSIC_LIST(DECLARE_FUNCTION)
 
 #undef DECLARE_FUNCTION
 };
 
 }  // namespace dart
 
 #endif  // VM_INTRINSIFIER_H_