CPU run-time feature detection on iOS API

Asked Mar 09 '18 at 16:56

Active Mar 09 '18 at 17:34

Viewed 84 times

I need to detect whether the arm/aarch64 cpus of iOS devices support the following features at run-time: fp, asimd, pmull, aes, sha1, sha2, sha3, sha512, crc32, atomics, fphp, asimdhp, asimdrdm, lrcpc, asimddp, and sve.

What's the API to query this information?

asked Mar 09 '18 at 16:56

gnzlbg

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So a generic version of https://stackoverflow.com/questions/45637888/how-to-determine-armv8-features-at-runtime-on-ios perhaps? – bmike Mar 09 '18 at 17:35
Yeah. The question you mentioned has no answer :/ – gnzlbg Mar 09 '18 at 20:02
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Coming from macOS, I would expect using sysctl with `machdep.cpu` to be available. Try calling it. – Mingye Wang Sep 04 '20 at 01:57

CPU run-time feature detection on iOS API

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