On Fri, Oct 21, 2016 at 1:33 AM, Joseph Myers <jos...@codesourcery.com> wrote:
> On Fri, 21 Oct 2016, Uros Bizjak wrote:
>
>> 2016-10-21 Uros Bizjak <ubiz...@gmail.com>
>>
>> * config/i386/i386.c (ix86_fold_builtin): Handle IX86_BUILTIN_INFQ
>> and IX86_BUILTIN_HUGE_VALQ here ...
>> (ix86_expand_builtin): ... not here.
>>
>> Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
>> Committed to mainline SVN.
>
> Do you know if it's possible to make architecture-specific built-in
> functions into aliases of architecture-independent ones? That would be
> the ideal thing for the *q __float128 functions - make them aliases of the
> *f128 architecture-independent ones, and so subject to any
> architecture-independent optimizations (for these two there's nothing more
> than folding to do, but at some point I expect we'll optimize fabsf128 and
> copysignf128 as much as the corresponding functions for float / double /
> long double, for example).
The only thing that is remotely similar to the above functionality is
library name argument to add_builtin_function. Maybe this function can
be enhanced to consider library_name as a true alias for
arch-independent optimizations, not only as a fallback library call?
Uros.
