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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109109] [13 Regression] mariadb fails in tests on i586
 (non-LTO mode) after r13-4435-g2c089640279614e3
Date: Mon, 13 Mar 2023 16:52:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109109

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If you suspect that one, that is certainly the simplest, in C that would be
__attribute__((noipa)) void
foo (unsigned long long *a, unsigned int b, unsigned int c)
{
  *a =3D (((unsigned long long) b) << 32) | c;
}

int
main ()
{
  unsigned long long a;
  foo (&a, 0xcafebabeU, 0xdeadbeefU);
  if (a !=3D 0xcafebabedeadbeefULL)
    __builtin_abort ();
}
and you can see the same difference with say -O2 -m32 -fno-omit-frame-point=
er.
But, that one works for both...=