Messages in this thread | | | Date | Tue, 2 Apr 2002 16:04:58 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH] gcc-3.1 ffs problem, kernel 2.4.18 |
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On Tue, 2 Apr 2002, Richard Henderson wrote: > > That said, we should probably be using __builtin_ffs > instead. The compiler knows how to do bsfl plus the > adjustment. Plus, it knows how to evaluate it at > compile-time for constants.
When was __builtin_ffs introduced? I know it didn't use to exist, but we've obviously bumped up the gcc requirements several times, so..
Linus
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