[Bug tree-optimization/121004] float_var*0.0f if we know a is finite be just done as copysign(0.0, a)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121004

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #7)
> And obviously for -fno-signed-zeros optimize the copysign to just 0.

Filed as PR 121017.