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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/112740] [14 Regression] wrong code with vector compare
 on riscv64 at -O0
Date: Thu, 30 Nov 2023 21:50:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112740

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Veclower -O0 produces
  c.0_6 =3D c_5(D);
  _2 =3D (__int128 unsigned) c.0_6;
  _1 =3D {_2};
  _10 =3D VIEW_CONVERT_EXPR<__int128 unsigned>(v_7(D));
  _11 =3D _10 >=3D _2; // 1 true
  _12 =3D (int128_t) _11; // 1
  _13 =3D -_12; // -1
  _14 =3D (<signed-boolean:128>) _13; // -1 aka true
  _3 =3D {_14}; // {-1} aka true
  _4 =3D ~_3; // 0 aka false
  _15 =3D VIEW_CONVERT_EXPR<<signed-boolean:128>>(_4); // 0 aka false
  _16 =3D _15 !=3D 0; // 0 !=3D 0, 0 false
  _17 =3D (__int128 unsigned) _16; // 0
  _18 =3D -_17; // 0
  _8 =3D {_18};

Which looks correct.
NOTE the ~ there, I am suspecting it is producing the wrong result ...=