[Bug rtl-optimization/83565] RTL combine pass breaks shift result (at least on ia64)

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83565

--- Comment #24 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Binary size (of vmlinux) grows by 0.09%.  I don't know about performance.