On 08/21/2015 04:08 AM, H. Peter Anvin wrote: > Wrong fix, though. Instead we should change it to use the set instruction, > which would also make it easier to use the CC_SET/CC_OUT proposed macros to > use assembly out in the future. > > The downside with set is that it only sets a single byte, the upside is that > it always outputs 0 or 1, and apparently if the output variable is your bool > gcc can use that for optimization. >
hpa -- can you send a pointer to that discussion? Thanks, P. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
