Hi Thomas
Don't you know by the way why ARMv8-R is not listed in t-rmprofile multilib ?
Alex
On Fri, Jan 26, 2018 at 9:25 PM, Thomas Preudhomme
wrote:
> That or just use -mfpu=auto (as in -mcpu=cortex-r52 -mfpu=auto
> -mfloat-abi=(softfp|hard)).
>
> Best regards,
>
> Thomas
>
>
> On 26/01/18 16:44, Alexander Fedotov wrote:
>>
>> Thank you Thomas
>>
>> So in order to set dp+Neon for armv8-r I should to use switch
>> "neon-fp-armv8". Not an fpv5-d16. Right ?
>>
>> On Fri, Jan 26, 2018 at 12:52 PM, Thomas Preudhomme
>> wrote:
>>>
>>> Hi Alexander,
>>>
>>> As mentioned in [1], Arm Cortex-R52 can have either single precision or
>>> double precision + Neon. This is reflected in GCC 8 by -mcpu=cortex-r52
>>> defaulting to the latter (double precision + Neon) and
>>> -mcpu=cortex-r52+nofp.dp giving you the former (single precision).
>>>
>>> [1] https://developer.arm.com/products/processors/cortex-r/cortex-r52
>>>
>>> Best regards,
>>>
>>> Thomas
>>>
>>>
>>> On 25/01/18 21:22, Alexander Fedotov wrote:
>>>>
>>>>
>>>> Hi,
>>>> As I understand from this
>>>> https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html current master
>>>> branch doesn't have support of double-precision FPv5 floating-point
>>>> instructions for ARMv8-R (Cortex-r52).
>>>> If yes, are there any chances to see them in GCC 8 ?
>>>>
>>>> Alex
>>>>
>>>
>>
>>
>>
>
--
Best regards,
AF
