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Anybody tried a Linux x32 ABI (kernel 3.4) compile to see how MAME performs?

Certainly on my todo list once kernel 3.4 hits the core repo in the distro I'm using (Arch), Mame thankfully has few dependencies so I hope it won't be too much of a hassle to rebuild them against the x32 abi.

Given that x32 has shown some serious performance improvements (~15-30%) on some cpu intensive tests it's certainly interesting to try it out on Mame with it's cpu emulations potentially benefiting greatly from more code fitting into the cpu caches.

Who knows, with x32 and profile-guided optimization one might get some games improving from somewhat jerky to silky smooth and others might atleast become less of a slide show (Naomi, Aleck64 I'm looking at you!)