RE: CRC32C Parallel Computation Optimization on ARM

On Thu, 26 Oct, 2023 11:37:52AM -0500, Nathan Bossart wrote:
>> We consider that a runtime check needs to be done in any scenario.
>> Here we only confirm that the compilation can be successful.
> >A runtime check will be done when choosing which algorithm.
> >You can think of us as merging USE_ARMV8_VMULL and USE_ARMV8_VMULL_WITH_RUNTIME_CHECK into USE_ARMV8_VMULL.

>Oh. Looking again, I see that we are using a runtime check for ARM in all
>cases with this patch. If so, maybe we should just remove
>USE_ARV8_CRC32C_WITH_RUNTIME_CHECK in a prerequisite patch (and have
>USE_ARMV8_CRC32C always do the runtime check). I suspect there are other
>opportunities to simplify things, too.

Yes, I have been removed USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK in this patch.
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