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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/105617] [12/13 Regression] Slp is maybe too aggressive
 in some/many cases
Date: Tue, 26 Jul 2022 11:22:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105617

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Michael_S from comment #12)
> On related note...
> One of the historical good features of gcc relatively to other popular
> compilers was absence of auto-vectorization at -O2.
> When did you decide to change it and why?

Well, people requested it ... so GCC 12 is now having it (with an extra
eye on code size but this all doesn't work for scalar code vectorization
which OTOH is thought to almost always benefit code size ...).=