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...36 >>> >> >> It feels like this optimization would be better done in >> llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp, >> > > I'll have a look at this approach. > You're right, that's a better place to do this indeed: https://reviews.llvm.org/D56593 > > >> >> But if you can show a similar performance win in public code, it'd be >>>> great to attempt to push a more optimized version upstream at least to >>>> glibc. Some more precise numbers than "very large improvement" are probably &g...

On Tue, Jan 8, 2019 at 9:24 AM Clement Courbet <courbet at google.com> wrote: > > > On Mon, Jan 7, 2019 at 10:26 PM James Y Knight <jyknight at google.com> > wrote: > I'm afraid about the "almost" and "generally": what about users who don't ? > Even so, it should be fine to enable it for those platforms which do include it. I do note,