[Bug target/110979] Miss-optimization for O2 fully masked loop on floating point reduction.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110979

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
See also https://gcc.gnu.org/pipermail/gcc-patches/2025-November/700340.html
and short discussion.