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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/103797] Clang vectorized LightPixel while GCC
 does not
Date: Wed, 22 Dec 2021 09:21:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103797

--- Comment #3 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to hubicka from comment #2)
> > Can you please attach a reduced test-case?
> Do you know how to produce one with a reasonable effort?

-E and remove not needed code.

> The
> declaratoins are quite convoluted, but the function is well isolated and
> easy to inspect from full one...

Do we speak about:
https://github.com/mozilla/gecko-dev/blob/bd25b1ca76dd5d323ffc69557f6cf759b=
a76ba23/gfx/2d/FilterNodeSoftware.cpp#L3670-L3691
?

It should be possible creating a synthetical test that does the same (and l=
ives
in a loop, right?).=