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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	[thread overview]
Message-ID: <bug-109048-4-hGBh2INjD2@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-109048-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109048

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

  parent reply	other threads:[~2023-03-07  6:13 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-07  6:01 [Bug tree-optimization/109048] New: " crazylht at gmail dot com
2023-03-07  6:03 ` [Bug tree-optimization/109048] " crazylht at gmail dot com
2023-03-07  6:13 ` crazylht at gmail dot com [this message]
2023-03-07  6:22 ` crazylht at gmail dot com
2023-03-07  6:34 ` crazylht at gmail dot com
2023-03-07  9:17 ` rguenth at gcc dot gnu.org
2023-03-07  9:38 ` jakub at gcc dot gnu.org
2023-03-07 10:09 ` rguenther at suse dot de
2023-03-27  8:26 ` rguenth at gcc dot gnu.org
2023-03-27  9:18 ` rguenth at gcc dot gnu.org
2023-03-27 10:37 ` rguenth at gcc dot gnu.org
2023-03-28 12:20 ` rguenth at gcc dot gnu.org
2023-04-13  7:30 ` rguenth at gcc dot gnu.org
2023-04-13  8:14 ` crazylht at gmail dot com

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