powerpc -mcpu=common equivalent ?

[Daniel Walker]

On 02/09/2017 11:06 AM, Jakub Jelinek wrote:
> On Thu, Feb 09, 2017 at 01:47:33PM -0500, David Edelsohn wrote:
>> Freescale did not implement the POWER architecture.  Again, POWER is a
>> comment about the original IBM POWER architecture (RIOS processors)
>> and used in RISC System/6000 computers, not the recent POWER
>> processors called POWER4, POWER5, POWER6, POWER7, POWER8, POWER9.
>>
>> lwsync is part of the ISA and Freescale did not fully implement the
>> architecture.
>>
>> Freescale or someone needs to implement a patch to target the
>> Freescale non-compliant processors.
> It seems with -mcpu=8540 and -mcpu=8548 you get sync instead of lwsync:
> /* E500 cores only support plain "sync", not lwsync.  */
> #define TARGET_NO_LWSYNC (rs6000_cpu == PROCESSOR_PPC8540 \
>                            || rs6000_cpu == PROCESSOR_PPC8548)
> The question is if all the CPUs you're using are these 2, or if you use some
> others that might not be superset of those.
>
> 	Jakub


We tried using e500, but on Freescale t1042 there was another 
instruction, evstdd instruction which caused a fault. Andrii did the 
testing, he can address it better than I can.


Daniel