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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/101481] [11/12 Regression]
 -ftree-loop-distribute-patterns can slow down and increases size of code
Date: Mon, 19 Jul 2021 06:29:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101481

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu.org
            Version|unknown                     |11.1.1
           Priority|P3                          |P2

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC one of the issues is that we do not have any strategy to expand memmove
calls with bounded size inline.  On GIMPLE we're only replacing memmove
with constant power-of-two size (and properly aligned pointers depending on
targets).=