On Fri, Oct 27, 2023 at 07:01:10AM +0000, Xiang Gao wrote: > 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.
Thanks. I went ahead and split this prerequisite part out to a separate thread [0] since it's sort-of unrelated to your proposal here. It's not really a prerequisite, but I do think it will simplify things a bit. [0] https://postgr.es/m/20231030161706.GA3011%40nathanxps13 -- Nathan Bossart Amazon Web Services: https://aws.amazon.com
