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

[slyfox at inbox dot ru]

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

--- Comment #10 from Sergei Trofimovich <slyfox at inbox dot ru> ---
> The patch works on an attached example. Building 7.2.0 with your patch to
> check on openssl testsuite.

Full openssl-1.0.2n test suite now passes with this patch.