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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/101009] [12 Regression] wrong code with "-O3
 -fno-tree-sra"
Date: Thu, 10 Jun 2021 09:40:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101009

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
  (overlap_iterations_a =3D [0])
  (overlap_iterations_b =3D [0]))
(build_classic_dist_vector
  dist_vector =3D (  1
  )
)
)
(compute_affine_dependence
  stmt_a: g[1].c =3D 1;
  stmt_b: *f.0_1 =3D g[1];
) -> no dependence

Hmm, we shouldn't be able to use affine dependence checking here since
g[1].c has an additional subsetting.  Or maybe the code to handle this
case has a bug at least.=