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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109048] [13 regression] redundant mask
 compare generated by vectorizer.
Date: Tue, 07 Mar 2023 06:13:23 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109048

--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
Lots of logic operation for mask in ifcvt

  <bb 17> [local count: 531502205]:
  # i_18 =3D PHI <i_47(26), 0(42)>
  # ivtmp_15 =3D PHI <ivtmp_43(26), 256(42)>
  # DEBUG i =3D> NULL
  # DEBUG BEGIN_STMT
  _38 =3D (long unsigned int) i_18;
  _37 =3D _38 * 4;
  _36 =3D af_24(D) + _37;
  x_20 =3D *_36;
  # DEBUG x =3D> NULL
  # DEBUG BEGIN_STMT
  # DEBUG D#1 =3D> NULL
  # DEBUG z =3D> NULL
  # DEBUG BEGIN_STMT
  _50 =3D x_20 >=3D 0.0;
  _52 =3D x_20 < iftmp.0_34;
  _53 =3D _50 & _52;
  _55 =3D x_20 >=3D iftmp.0_34;
  _56 =3D _50 & _55;
  _74 =3D x_20 < 0.0;
  _ifc__73 =3D _74 ? 2.0e+0 : prephitmp_41;
  _ifc__75 =3D _53 ? prephitmp_41 : _ifc__73;
  prephitmp_17 =3D _56 ? iftmp.1_16 : _ifc__75;
  # DEBUG t1 =3D> D#2
  # DEBUG BEGIN_STMT
  # DEBUG neg_t1 =3D> -D#2
  # DEBUG BEGIN_STMT
  # DEBUG t2 =3D> prephitmp_17
  # DEBUG BEGIN_STMT
  _12 =3D res_28(D) + _37;
  _26 =3D *_12;
  _27 =3D _26 + x_20;
  _45 =3D prephitmp_17 + _27;
  *_12 =3D _45;
  # DEBUG BEGIN_STMT
  i_47 =3D i_18 + 1;
  # DEBUG i =3D> i_47
  # DEBUG BEGIN_STMT
  ivtmp_43 =3D ivtmp_15 - 1;=