[PATCH 1/6] ARM: prefetch: remove redundant "cc" clobber
will.deacon at arm.com
Wed Jul 24 06:19:51 EDT 2013
On Tue, Jul 23, 2013 at 08:48:11PM +0100, Nicolas Pitre wrote:
> On Tue, 23 Jul 2013, Will Deacon wrote:
> > The pld instruction does not affect the condition flags, so don't bother
> > clobbering them.
> > Signed-off-by: Will Deacon <will.deacon at arm.com>
> Acked-by: Nicolas Pitre <nico at linaro.org>
Thanks for reviewing the series, much appreciated.
> You know the legacy reason why the cc clobber was there, right?
> It certainly doesn't apply anymore.
I was under the impression that it was due to ancient GCC behaviour and the "cc"
was there to prevent re-ordering. For interest, what are the specifics?
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