[Bug target/70799] STV pass does not convert DImode shifts and rotates

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70799

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #1)
> I've been also surprised that the STV pass punts on moves of constants into
> DImode registers, if it is not 0, sure, it has higher cost, because it needs
> to be loaded from memory, but in the end together with enough other DImode
> operations it can be still beneficial.

This is tracked in PR 70763.