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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/102058] [12 regression] 450.soplex regressed
 on x86_64 with -Ofast -march=generic (by 8-15%)
Date: Thu, 20 Jan 2022 10:33:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102058

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's all with generic arch/tune but -Ofast which is not the most interesting
combination.  But we should see to extract a testcase for the reduction
and see to gather runtime data on the size() distribution.  When
vectorized the loop might also turn from nice small to slightly too big
for efficient cross iteration OOO scheduling.=