This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/59539] Missed optimisation: VEX-prefixed operations don't need aligned data
- 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, 18 Dec 2013 10:39:49 +0000
- Subject: [Bug target/59539] Missed optimisation: VEX-prefixed operations don't need aligned data
- Auto-submitted: auto-generated
- References: <bug-59539-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59539
--- Comment #7 from UroÅ Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #6)
> Created attachment 31464 [details]
> gcc49-pr59539.patch
>
> So like this instead? The half-merged AVX512f support makes any changes
> hard, it isn't clear if the masked variant will be needed or not, but it
> can't be handled that easily, so I've kept it in the expander name for now,
> just don't optimize it.
Yes, but why you use misaligned_operand check? This check is used in move
patterns to generate movu insn *instead of* mova. I guess that we can skip this
check entirely.