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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/115418] [14 regression] Extra movapd emitted for MAX
 implementation
Date: Mon, 10 Jun 2024 17:13:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115418

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
             Target|                            |x86_64-linux-gnu
   Last reconfirmed|                            |2024-06-10

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The difference between GCC 14 and 15 is:

GCC 14:
  _1 =3D a_4(D) < _5;
  _7 =3D _1 ? _5 : a_4(D);

GCC 15:
  _8 =3D _4 > a_5(D);
  _7 =3D _8 ? _4 : a_5(D);


GCC 15's IR gets recognized for UNSPEC_IEEE_MAX while GCC 14's is not.

If anything the target should recognize both cases ... Since both are
canonical.=