[arm] Automatically enable CRC instructions on supported ARMv8-A CPUs

Richard Earnshaw (lists) Richard.Earnshaw@arm.com
Thu Sep 8 11:40:00 GMT 2016


On 07/09/16 17:35, Evandro Menezes wrote:
> Richard,
> 
> I'd think that leaving CRC implicit in ARM_ARCH_V8A and creating a new
> feature that excludes it, say ARM_ARCH_V8A_NO_CRC, would reflect the
> specs more closely.  But I have no strong feelings about it.
> 
> Thank you,
> 

I did think about that, but technically, CRC is an extension to v8-A, so
describing omissions is awkward, even though having CRC is far more
common than not having it.

R.



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