[Bug tree-optimization/126695] Drop a redundant nested fmin or fmax

"jsm28 at gcc dot gnu.org via Gcc-bugs" <[email protected]> Thu, 06 Aug 2026 16:27:38 +0000

Newsgroups	gmane.comp.gcc.bugs
Message-ID	<[email protected]/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126695

--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Not valid with -fsignaling-nans (if x is sNaN and y is infinite, the nested
call returns y but non-nested returns qNaN; this is essentially why IEEE
754-2019 introduced new max/min operations, which bind to different functions
that are new in C23 rather than the older fmax / fmin).