[Bug d/109221] std.math.floor, core.math.ldexp, std.math.poly poor inlining

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109221

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With -ffast-math -mfpmath=387,sse (or -mavx512f instead of -mfpmath=387 as
there is a avx512f instruction too) added, ldexp gets inlined.