[Bug rtl-optimization/124441] The `volatile` keyword will block the optimization of replacing temporary variables in the `expand/TER` RTL pass.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124441

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This might be fixed on the trunk even.