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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/100056] [9/10 Regression]  orr + lsl vs. [us]bfiz
Date: Tue, 15 Feb 2022 16:08:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100056

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #13 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.o=
rg> ---
The patch is no longer effective after
g:96146e61cd7aee62c21c2845916ec42152918ab7, since e.g.:

int
or_shift_u3a (unsigned i)
{
  i &=3D 7;
  return i | (i << 11);
}

now gets folded to:

  i_2 =3D i_1(D) & 7;
  _5 =3D i_2 * 2049;

We then expand the multiplication as plus+shift rather
than ior+shift.=