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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99822] New: Assembler messages: Error: integer register
 expected in the extended/shifted operand register at operand 3 -- `adds
 x1,xzr,#2'
Date: Tue, 30 Mar 2021 04:25:45 +0000
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X-Bugzilla-Keywords: assemble-failure
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99822

            Bug ID: 99822
           Summary: Assembler messages: Error: integer register expected
                    in the extended/shifted operand register at operand 3
                    -- `adds x1,xzr,#2'
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: assemble-failure
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: aarch64-linux-gnu

GNU as 2.35.2 fails to assemble output of gcc-11.0.1-alpha20210328 snapshot
(g:499fa254ae8c9752d8c2cf3130b13ffddfd83546) generated w/ -O1 for the follo=
wing
testcase:

int zt, bm, p5 =3D 1;

void __attribute__ ((cold))
l2 (unsigned long int hz)
{
  __int128 d9 =3D 0;
  unsigned long int *mg =3D hz ? &hz : (unsigned long int *) &d9;

  while (d9 < 1)
    {
      bm =3D bm > d9;
      bm =3D bm =3D=3D (d9 =3D bm || hz);

      hz =3D 0x197000000;
      d9 =3D hz * hz;

      while (p5 < 1)
        {
          bm =3D ((hz =3D 3) ? zt : 0) > 0x1001;
          if (bm !=3D 0)
            {
              __int128 *nd =3D (__int128 *) bm;

              *nd /=3D 3;
            }

          *mg =3D 0x1001;
          p5 -=3D *mg;
        }

      for (zt =3D 0; zt >=3D 0; zt +=3D 2)
        d9 =3D 0;

      d9 +=3D 2;
    }
}

% aarch64-linux-gnu-gcc-11.0.1 -O1 -w -c drr4usrh.c
/tmp/ccu8CYtI.s: Assembler messages:
/tmp/ccu8CYtI.s:109: Error: integer register expected in the extended/shift=
ed
operand register at operand 3 -- `adds x1,xzr,#2'=