[Interpreter] Basic flow control.

src/interpreter/bytecodes.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 "src/interpreter/bytecodes.h"
 
 #include "src/frames.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 115 matching lines @@
     OperandType op_type = GetOperandType(bytecode, i);
     uint8_t operand = operands_start[i];
     switch (op_type) {
       case interpreter::OperandType::kCount:
         os << "#" << static_cast<unsigned int>(operand);
         break;
       case interpreter::OperandType::kIdx:
         os << "[" << static_cast<unsigned int>(operand) << "]";
         break;
       case interpreter::OperandType::kImm8:
-        os << "#" << static_cast<int>(operand);
+        os << "#" << static_cast<int>(static_cast<int8_t>(operand));
         break;
       case interpreter::OperandType::kReg: {
         Register reg = Register::FromOperand(operand);
         if (reg.is_parameter()) {
           int parameter_index = reg.ToParameterIndex(parameter_count);
           if (parameter_index == 0) {
             os << "<this>";
           } else {
             os << "a" << parameter_index - 1;
           }
@@ skipping 57 matching lines @@
 uint8_t Register::ToOperand() const { return static_cast<uint8_t>(-index_); }
 
 
 Register Register::FromOperand(uint8_t operand) {
   return Register(-static_cast<int8_t>(operand));
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8