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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110170] Sub-optimal conditional jumps in
 conditional-swap with floating point
Date: Fri, 09 Jun 2023 06:40:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110170

--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #5)
> (In reply to Antony Polukhin from comment #2)
> > -fno-trapping-math had no effect
> >=20
> > Some tests with nans seem to produce the same results for both code
> > snippets: https://godbolt.org/z/GaKM3EhMq
>=20
> What about infinity, I notice
> With -ffinite-math-only -funsafe-math-optimizations, gcc now can generate=
=20
>=20
> __cond_swap(double*, double*):
>         movsd   (%rdi), %xmm0
>         movsd   (%rsi), %xmm1
>         movapd  %xmm0, %xmm2
>         minsd   %xmm1, %xmm0
>         maxsd   %xmm1, %xmm2
>         movsd   %xmm2, (%rsi)
>         movsd   %xmm0, (%rdi)
>         ret

Assume -funsafe-math-optimizations is not needed?=