[Bug middle-end/80042] gcc thinks sin/cos don't set errno

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80042

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely because gcc assumes sin ( Inf); is a full constant so it can remove
the load after it.