[OE-core] [PATCHv2][master] arch-armv8a.inc: Add tune for 32-bit ARMv8a

Khem Raj raj.khem at gmail.com
Sat Mar 12 11:57:43 UTC 2016


On Sat, Mar 12, 2016 at 7:41 PM, Otavio Salvador
<otavio.salvador at ossystems.com.br> wrote:
> On Fri, Mar 11, 2016 at 9:17 PM, Khem Raj <raj.khem at gmail.com> wrote:
>>
>>> On Mar 12, 2016, at 12:58 AM, Daniel Dragomir <daniel.dragomir at windriver.com> wrote:
>>>
>>> This patch adds tunes for 32-bit armv8a platforms. The user can select
>>> little or big endian, hard or soft float, the vector floating-point
>>> instruction set: vfpv4 or fp-armv8 and the thumb, neon, crc and crypto
>>> extensions.
>>
>> This does not feel right to me. Look at how thunderX looks like
>> ARMv8 is the time to fix this tune explodes on arm, this patch is not helping
>> it.
>>
>> Do we need the hf/neon/vfp/thumb2 variants?
>
> Do you mean we ought to use hf+neon+thumb2+fp-armv8 for everyone and
> just have optional features in and out?

something like that yes. Just aarch64 and aarch32 make it simple as that

>
>
> --
> Otavio Salvador                             O.S. Systems
> http://www.ossystems.com.br        http://code.ossystems.com.br
> Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750



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