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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111346] `X <= MINMAX` pattern is missing :c
 on the cmp
Date: Sun, 10 Sep 2023 20:52:32 +0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: internal-improvement, missed-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111346

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D96708

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
static inline _Bool
test1 (int a, int b, int c)
{
    return c >=3D a;
}

int f();
int g();

_Bool test2(int a, int b)
{
        a =3D f();
        a =3D g();
        int t =3D a;
        if (t < b) t =3D b;
        return test1(a,b,t);
}
```

This should just reduced to:
```
  f ();
  g ();
  return 1;
```

But currently we get:
```
  f ();
  a_5 =3D g ();
  _3 =3D MAX_EXPR <a_5, b_6(D)>;
  _7 =3D _3 >=3D a_5;
  return _7;
```
Which does not match the referenced pattern due to the missing :c on cmp.=