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[Bug target/70799] STV pass does not convert DImode shifts and rotates
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 Apr 2016 20:45:40 +0000
- Subject: [Bug target/70799] STV pass does not convert DImode shifts and rotates
- Auto-submitted: auto-generated
- References: <bug-70799-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70799
--- Comment #2 from UroÅ 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.