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SubjectRe: using gcc built-ins for bitops?
> Perhaps. It's not impossible that say gcc 3.5 will add a few more builtins
> even that then allow more functions to be converted, otoh that shouldn't be
> impossible to cope with. I'll have a look to see how it pans out.

You could have an asm-generic/bitops-builtin.h and arch's could #include
that after defining all the HAVE_BUILTIN_xxx macros they want. I suspect
not all architectures will get the most correct built-ins (e.g. the arch
may be able to optimize better than gcc's builtin is doing).

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