[Bug tree-optimization/103006] [9/10/11/12 Regression] wrong code at -O2 (only) on x86_64-linux-gnu
pinskia at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Sat Oct 30 22:12:18 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103006
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-10-30
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, here is one which is broken at -O1 and -O2 but ok at -O3:
__attribute__((noipa)) void ff(void){}
int a, *b, c, e, f;
__attribute__((always_inline))
static inline void g() {
int *d[7];
d[6] = b = (int *)d;
ff();
}
__attribute__((noinline))
int i() {
for (c = 0; c < 2; c++) {
long h[6][2];
for (e = 0; e < 6; e++)
for (f = 0; f < 2; f++)
h[e][f] = 1;
if (c) {
g();
return h[3][0];
}
}
return 0;
}
int main() {
if (i() != 1)
__builtin_abort ();
return 0;
}
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