[Interpreter] Bytecodes for exchanging registers.

test/unittests/interpreter/bytecodes-unittest.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <vector>
 
 #include "src/v8.h"
 
 #include "src/interpreter/bytecodes.h"
 #include "test/unittests/test-utils.h"
@@ skipping 24 matching lines @@
       Register s = Register::FromOperand(operand_value);
       CHECK_EQ(i, s.ToParameterIndex(parameter_count));
     }
   }
 }
 
 
 TEST(OperandConversion, RegistersParametersNoOverlap) {
   std::vector<uint8_t> operand_count(256);
 
-  for (int i = 0; i <= Register::kMaxRegisterIndex; i++) {
+  for (int i = 0; i <= kMaxInt8; i++) {
     Register r = Register(i);
     uint8_t operand = r.ToOperand();
     operand_count[operand] += 1;
     CHECK_EQ(operand_count[operand], 1);
   }
 
   int parameter_count = Register::MaxParameterIndex() + 1;
   for (int i = 0; i < parameter_count; i++) {
     Register r = Register::FromParameterIndex(i, parameter_count);
     uint8_t operand = r.ToOperand();
     operand_count[operand] += 1;
     CHECK_EQ(operand_count[operand], 1);
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8