message: Add missing handling of MULW instruction in RV ALU
diff: @@ -25,6 +25,8 @@ public:
  return op1.uValue() + op2.uValue();
  case ALUOp::SUB:
  return op1.uValue() - op2.uValue();
  + case ALUOp::MULW:
  + return VT_U(signextend<32>(static_cast<int32_t>(op1.uValue()) * op2.uValue()));
  case ALUOp::MUL:
  return VT_U(op1.sValue() * op2.sValue());
  case ALUOp::MULH: {
  