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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/103037] [11/12 Regression] Wrong code with
 -O2 since r11-6100-gd41b097350d3c5d0
Date: Tue, 02 Nov 2021 08:51:44 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103037

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The match.pd:358 triggers twice during PRE, but certainly before PRE there =
is
no division with boolean range second operand, the only one in there is
  _5 =3D _25 / iftmp.1_10;
where iftmp.1_10 has
  # RANGE [-32768, 65535]
  # iftmp.1_10 =3D PHI <iftmp.1_15(5), iftmp.1_14(6)>=