正是当手臂的条件标志清零/改性？

Precisely when are ARM's condition flags cleared/modified?

youdao

你可以使用的仅仅是基于CPU标志的条件跳转。

What you have are conditional jumps based on CPU flags.

youdao

注：如果我们没有启用这个条件编译标志，那么就可以得到一个可以在目标环境中使用的驱动程序对象文件。

Note: If you do not enable this conditional compilation flag, you will get the release version of the driver object that will be used in the target environment.

youdao