On 16/04/12 13:41, Richard Earnshaw wrote:
P.S. This patch can't actually be committed until my "NEON DImode
immediate constants" patch is approved and committed. (Without that the
load #0 needs a constant pool, and loading constants this late has a bug
at -O0.)
neon-neg64.patch
2012-04-12 An
On 14/04/12 14:11, Andrew Stubbs wrote:
> And now with the patch. :(
>
> On 14/04/12 13:48, Andrew Stubbs wrote:
>> On 12/04/12 16:48, Richard Earnshaw wrote:
>>> If negation in Neon needs a scratch register, it seems to me to be
>>> somewhat odd that we're disparaging the ARM version.
>>>
>>> Als
And now with the patch. :(
On 14/04/12 13:48, Andrew Stubbs wrote:
On 12/04/12 16:48, Richard Earnshaw wrote:
If negation in Neon needs a scratch register, it seems to me to be
somewhat odd that we're disparaging the ARM version.
Also, wouldn't it be sensible to support a variant that was
earl
On 12/04/12 16:48, Richard Earnshaw wrote:
If negation in Neon needs a scratch register, it seems to me to be
somewhat odd that we're disparaging the ARM version.
Also, wouldn't it be sensible to support a variant that was
early-clobber on operand 0, but loaded immediate zero into that value fir
On 12/04/12 17:16, Andrew Stubbs wrote:
> On 12/04/12 16:48, Richard Earnshaw wrote:
>> If negation in Neon needs a scratch register, it seems to me to be
>> somewhat odd that we're disparaging the ARM version.
>
> Good point, I'm really meaning to provide missing functionality in NEON
> to preve
On 12/04/12 16:48, Richard Earnshaw wrote:
If negation in Neon needs a scratch register, it seems to me to be
somewhat odd that we're disparaging the ARM version.
Good point, I'm really meaning to provide missing functionality in NEON
to prevent unnecessary moves, rather than cause them, so I
On 26/03/12 11:14, Andrew Stubbs wrote:
> On 28/02/12 17:45, Andrew Stubbs wrote:
>> Hi all,
>>
>> This patch adds a DImode negate pattern for NEON.
>>
>> Unfortunately, the NEON vneg instruction only supports vectors, not
>> singletons, so there's no direct way to do it in DImode, and the
>> compi
Ping.
On 26/03/12 11:14, Andrew Stubbs wrote:
On 28/02/12 17:45, Andrew Stubbs wrote:
Hi all,
This patch adds a DImode negate pattern for NEON.
Unfortunately, the NEON vneg instruction only supports vectors, not
singletons, so there's no direct way to do it in DImode, and the
compiler ends up
On 28/02/12 17:45, Andrew Stubbs wrote:
Hi all,
This patch adds a DImode negate pattern for NEON.
Unfortunately, the NEON vneg instruction only supports vectors, not
singletons, so there's no direct way to do it in DImode, and the
compiler ends up moving the value back to core registers, negati
On 28/02/12 17:45, Andrew Stubbs wrote:
This patch adds a DImode negate pattern for NEON.
Oops, that patch completely failed to allow for the fallback to
instructions that work in core registers. It also forgot to mention that
the CC register was clobbered.
This patch is the same except tha
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