https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107493
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |12.1.0
Last reconfirmed| |2022-11-01
Known to fail| |13.0
Ever confirmed|0 |1
Summary|Wrong code at -Os on |[13 Regression] Wrong code
|x86_64-linux-gnu |at -Os on x86_64-linux-gnu
Target Milestone|--- |13.0
Status|UNCONFIRMED |NEW
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
sccp is broken:
Estimating # of iterations of loop 1
Statement (exit)if (a_lsm.10_13 <= 0)
is executed at most 0 (bounded by 0) + 1 times in loop 1.
Induction variable (int) 65517 + 10 * iteration does not wrap in statement _1 =
a_lsm.10_13 + 2;
in loop 1.
Statement _1 = a_lsm.10_13 + 2;
is executed at most 429490178 (bounded by 429490178) + 1 times in loop 1.
Induction variable (int) 65525 + 10 * iteration does not wrap in statement _4 =
(int) _3;
in loop 1.
Statement _4 = (int) _3;
is executed at most 1 (bounded by 1) + 1 times in loop 1.
final value replacement:
a_lsm.10_14 = PHI <a_lsm.10_13(4)>
with expr: 65515
final stmt:
a_lsm.10_14 = 65515;
Confirmed.
