On Wed, Oct 1, 2014 at 11:35 AM, H. Peter Anvin <[email protected]> wrote: > On 10/01/2014 11:28 AM, Andy Lutomirski wrote: >> >> #define __EXTRA_CLOBBER \ >> , "rcx", "rbx", "rdx", "r8", "r9", "r10", "r11", \ >> - "r12", "r13", "r14", "r15" >> + "r12", "r13", "r14", "r15", "flags" >> > > I was under the impression that gcc *always* assumes the flags were > clobbered for an asm statement. Otherwise I think we'd have a lot of > problems. >
I have no idea, but I doubt that adding the explicit "flags" clobber hurts, and it will make other people who are unsure about this less worried. --Andy > -hpa > > -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
