REG_OPER_OP_ORDER   42 src/ia32/disasm-ia32.cc REG_OPER_OP_ORDER,
REG_OPER_OP_ORDER   44 src/x64/disasm-x64.cc REG_OPER_OP_ORDER = 1,  // Register destination, operand source.
REG_OPER_OP_ORDER   48 src/x64/disasm-x64.cc BYTE_REG_OPER_OP_ORDER = REG_OPER_OP_ORDER | BYTE_SIZE_OPERAND_FLAG,