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Subject: [Bug tree-optimization/105414] constant folding for fmin/max(snan,
 snan) is wrong
Date: Wed, 11 May 2022 01:32:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105414

--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by HaoChen Gui <guihaoc@gcc.gnu.org>:

https://gcc.gnu.org/g:344e425340e3c8e4539b43bf8f661e02c5a5b9a0

commit r13-280-g344e425340e3c8e4539b43bf8f661e02c5a5b9a0
Author: Haochen Gui <guihaoc@gcc.gnu.org>
Date:   Mon May 9 17:34:23 2022 +0800

    This patch skips constant folding for fmin/max when either argument is
sNaN. According to C standard, fmin(sNaN, sNaN=C3=AF=C2=BC=3D qNaN, fmin(sN=
aN, NaN) =3D
qNaN.

    gcc/
            PR target/105414
            * match.pd (minmax): Skip constant folding for fmin/fmax when b=
oth
            arguments are sNaN or one is sNaN and another is NaN.

    gcc/testsuite/
            PR target/105414
            * gcc.dg/pr105414.c: New.=