No, there is no way for gcc to figure out "num4" has been changed

送交者: AA 于 2005-7-01, 02:56:29:

回答: Is this a bug of GCC or what? 由 AQuestion 于 2005-7-01, 00:42:44:

One solution is to firstly assign "num>>4" into a variable like i; then use it as both input and output in asm to tell gcc it's modified.