[Bug tree-optimization/115723] SPEC CPU2017 521/621 build error with -Ofast and AVX512 enabled(-ftree-vectorize?)

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115723

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
sum_38 = .COND_ADD (_72, _36, sum_53, 1.0e+20);

so the else value is not equal to the reduction chain op (sum_53).  I'm
reducing now.