[Bug rtl-optimization/83628] [8 Regression] performance regression when accessing arrays on alpha

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83628

--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The MULT is not canonical.

For some reason we do not realise we can do the ASHIFT as SI instead of DI.