Re: [PATCH] x86: allow to suppress default clobbers added to asm()s

2014-11-04 Thread Jeff Law
On 11/03/14 01:11, Jan Beulich wrote: I really don't like having an option that's globally applied for this feature. THough I am OK with having a mechanism to avoid implicit clobbers on specific ASMs. Why not? That way, for projects/components knowing all their asm()s have all clobbers explici

Re: [PATCH] x86: allow to suppress default clobbers added to asm()s

2014-11-03 Thread Jan Beulich
>>> On 31.10.14 at 20:02, wrote: > On 10/31/14 02:07, Jan Beulich wrote: >> While it always seemed wrong to me that there's no way to avoid the >> default "flags" and "fpsr" clobbers, the regression the fix for >> PR/60663 introduced (see PR/63637) makes it even more desirable to have >> such a me

Re: [PATCH] x86: allow to suppress default clobbers added to asm()s

2014-10-31 Thread Jeff Law
On 10/31/14 02:07, Jan Beulich wrote: While it always seemed wrong to me that there's no way to avoid the default "flags" and "fpsr" clobbers, the regression the fix for PR/60663 introduced (see PR/63637) makes it even more desirable to have such a mechanism: This way, at least asm()s with a sing

[PATCH] x86: allow to suppress default clobbers added to asm()s

2014-10-31 Thread Jan Beulich
While it always seemed wrong to me that there's no way to avoid the default "flags" and "fpsr" clobbers, the regression the fix for PR/60663 introduced (see PR/63637) makes it even more desirable to have such a mechanism: This way, at least asm()s with a single output and no explicit clobbers can a