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From: Florian Weimer <fweimer@redhat.com>
To: gcc@gcc.gnu.org
Cc: Jeff Law <jeffreyalaw@gmail.com>,
	wschmidt@linux.ibm.com, H.J. Lu <hjl.tools@gmail.com>,
	Hongtao Liu <hongtao.liu@intel.com>,
	Segher Boessenkool <segher@kernel.crashing.org>,
	jakub@redhat.com, rearnsha@arm.com, richard.sandiford@arm.com,
	Premachandra.Mallappa@amd.com
Subject: Enable the vectorizer at -O2 for GCC 12
Date: Mon, 30 Aug 2021 15:04:36 +0200	[thread overview]
Message-ID: <87v93nozh7.fsf@oldenburg.str.redhat.com> (raw)

There has been a discussion, both off-list and on the gcc-help mailing
list (“Why vectorization didn't turn on by -O2”, spread across several
months), about enabling the auto-vectorizer at -O2, similar to what
Clang does.

I think the review concluded that the very cheap cost model should be
used for that.

Are there any remaining blockers?

Thanks,
Florian


             reply	other threads:[~2021-08-30 13:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30 13:04 Florian Weimer [this message]
2021-08-30 14:11 ` Bill Schmidt
2021-08-31  3:10   ` Kewen.Lin
2021-08-31  3:30     ` Hongtao Liu
2021-08-31  4:13       ` Jeff Law
2021-09-01  9:10         ` Andrew Stubbs
2021-09-01 11:23 ` Tamar Christina
2021-09-06  9:04   ` Hongtao Liu

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