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

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 1046 matching lines @@
   if (imm8 == 1) {
     EMIT(0xD1);
     EMIT(0xD8 | dst.code());
   } else {
     EMIT(0xC1);
     EMIT(0xD8 | dst.code());
     EMIT(imm8);
   }
 }
 
+void Assembler::ror(Register dst, uint8_t imm8) {
+  EnsureSpace ensure_space(this);
+  ASSERT(is_uint5(imm8));  // illegal shift count
+  if (imm8 == 1) {
+    EMIT(0xD1);
+    EMIT(0xC8 | dst.code());
+  } else {
+    EMIT(0xC1);
+    EMIT(0xC8 | dst.code());
+    EMIT(imm8);
+  }
+}
+
+void Assembler::ror_cl(Register dst) {
+  EnsureSpace ensure_space(this);
+  EMIT(0xD3);
+  EMIT(0xC8 | dst.code());
+}
+
 
 void Assembler::sar(Register dst, uint8_t imm8) {
   EnsureSpace ensure_space(this);
   ASSERT(is_uint5(imm8));  // illegal shift count
   if (imm8 == 1) {
     EMIT(0xD1);
     EMIT(0xF8 | dst.code());
   } else {
     EMIT(0xC1);
     EMIT(0xF8 | dst.code());
@@ skipping 1569 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32