[Bug target/82418] Division on a constant is suboptimal because of not using imul instruction

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82418

--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #3)
> it's likely that your test measured something else,

You are right, my test was bogus and clang's version is faster.