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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/99924] [11 Regression] ICE in vect_schedule_slp_node, at
 tree-vect-slp.c:6040 since
 r11-6734-gad2603433853129e847cade5e269c6a5f889a020
Date: Tue, 06 Apr 2021 08:47:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99924

--- Comment #3 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> Confirmed.  I will have a look.

It's interesting since the cost model needs to be disabled to reproduce it.

It looks like when it is one of the load nodes already has a VEC_STMT so the
assert crashed in schedule_slp_node

  vec_stmts =3D {
    m_vec =3D 0x4e0e870
  },

>>> dbgrep (node)
# VUSE <.MEM_6(D)>
_14 =3D REALPART_EXPR <*tfn_7(D)>;

If that helps.=