On 2024-11-24 11:00:20, Fabian Grünbichler wrote: > On Sat, Nov 23, 2024, at 5:50 PM, Chris Hofstaedtler wrote: > > * Fabian Grünbichler <debian@fabian.gruenbichler.email> [241123 15:31]: > >> B) bump the i386 baseline in Debian to require SSE2, and stop disabling > >> SSE2 there in rustc > >> C) disable all optimizations for Rust code on i386 (not really an option I > >> think, just here for completeness sake) > > > > D) follow the other teams and stop building Rust on i386. > > I am not personally invested in i386 at all, but that is still not a call > that I'd want to make as toolchain maintainer. If the release team prefers it > over B) and over risking running into the miscompilation issues in practice, > then I won't object. > > FWIW, my (personal!) current preference would be B), followed by either > documenting the issue and accepting it or D). Given the far-reaching > implications of both B and D, I don't think this is a decision that either I > or the Rust team can make alone.
I've been watching this thread from the sideline so far, but after thinking some more, I don't understand why B) is simply not the chosen path forward. Are there viable/realistic platforms today that are i386 for real, and don't support SSE2? In other words, if Debian as a whole does B) (not only for rust), what is the practical impact on any non-toy hardware? regards, iustin
