https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87482
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- I expect it's valid to use (void) if that particular IFUNC resolver doesn't use the HWCAP information passed, even if the HWCAP information is passed to resolvers on that architecture. And I wouldn't assume resolvers are necessarily consistent about which integer type of a given size is used - the AArch64 glibc dynamic linker uses uint64_t, for example, but a user could well use (unsigned) long int or (unsigned) long long int rather than exactly matching what the dynamic linker uses. (Using a narrower integer type if you only care about low bits of the HWCAP is riskier, depending on what the ABI says about high bits of the register passing such a narrower integer argument.)
