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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/110252] [14 Regression] Wrong code at -O2/3/s
 on x86_64-linux-gnu
Date: Thu, 15 Jun 2023 02:13:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110252

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
smallest testcase:
```
signed char f() __attribute__((__noipa__));
signed char f() { return 0; }
int main()
{
  int g =3D f() - 1;
  int e =3D g < 0 ? 1 : ((g >> (8-2))!=3D0);
  asm("":"+r"(e));
  if (e !=3D 1)
    __builtin_abort();
}
```

Note I changed 6 to 8-2 as it better explains what is going on and why 6 is=
 the
one needed here.
Second the 239 is just changed over to -1 as it just needs any subtraction.
third is j is inlined and the !=3D is moved over to the conditional express=
ion.
4th and not least, removed all of the pointers and just changed over to usi=
ng
inline-asm to hide the range of e at the if statement.=