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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/99706] [10/11 Regression] ICE: maximum number of
 generated reload insns per insn achieved (90)
Date: Mon, 22 Mar 2021 20:04:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99706

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|11.0                        |10.1.0
            Summary|[11 Regression] ICE:        |[10/11 Regression] ICE:
                   |maximum number of generated |maximum number of generated
                   |reload insns per insn       |reload insns per insn
                   |achieved (90)               |achieved (90)
      Known to work|                            |7.3.0, 7.4.0
      Known to fail|                            |10.0, 11.0
   Target Milestone|11.0                        |10.3

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a testcase which fails at -O1 (without any other options) and above:
int kk;

typedef unsigned long long v2di __attribute__((vector_size(16) ));

void f(v2di);

void
ii (int BUFSIZE)
{
  char buf[BUFSIZE], *ptr =3D buf;
  int i;
  unsigned long t =3D (unsigned long)buf;
  v2di tt =3D {t, t+1};
  f(tt);
}
----- CUT ----
This worked in GCC 7.3.0 and 7.4.0 but fails with 10.1.0 and above.  I don't
have 9.x to test on though.=