Add rotate-right instruction to hydrogen and use it instead of bitwise operations

src/token.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 81 matching lines @@
   /* being contiguous and sorted in the same order! */                  \
   T(COMMA, ",", 1)                                                      \
   T(OR, "||", 4)                                                        \
   T(AND, "&&", 5)                                                       \
   T(BIT_OR, "|", 6)                                                     \
   T(BIT_XOR, "^", 7)                                                    \
   T(BIT_AND, "&", 8)                                                    \
   T(SHL, "<<", 11)                                                      \
   T(SAR, ">>", 11)                                                      \
   T(SHR, ">>>", 11)                                                     \
+  T(ROR, "rotate right", 11)   /* only used by Crankshaft */            \
   T(ADD, "+", 12)                                                       \
   T(SUB, "-", 12)                                                       \
   T(MUL, "*", 13)                                                       \
   T(DIV, "/", 13)                                                       \
   T(MOD, "%", 13)                                                       \
                                                                         \
   /* Compare operators sorted by precedence. */                         \
   /* IsCompareOp() relies on this block of enum values */               \
   /* being contiguous and sorted in the same order! */                  \
   T(EQ, "==", 9)                                                        \
@@ skipping 175 matching lines @@
  private:
   static const char* const name_[NUM_TOKENS];
   static const char* const string_[NUM_TOKENS];
   static const int8_t precedence_[NUM_TOKENS];
   static const char token_type[NUM_TOKENS];
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TOKEN_H_