[Bug gas/24258] v8.5 extension "frintts" missing as a separate feature

[sudi at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24258

--- Comment #3 from Sudakshina Das <sudi at gcc dot gnu.org> ---
Hi Richard

Sorry for the delay in getting back on this. I agree that the specs
say that any Armv8.[N+1] feature is optional on Armv8.x. However in
order to implement that, we would have to make every feature optional
not just frintts. We chose to keep these features independent
internally by giving them new feature macros so that if and when someone
implements a Armv8.[N+1] feature optionally in a Armv8.N, it can be
easily updated. Thus not giving features like frintts a user facing
option was a conscious decision we took while implementing.

Sudi

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