https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113257
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tnfchris at gcc dot
gnu.org
Last reconfirmed| |2025-01-10
Ever confirmed|0 |1
--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Confirmed,
The reason -mcpu=native doesn't work is because it's a big.LITTLE system,
on big little with two unknown CPUs we don't enable the fallback.
The reason -mcpu=native -march=native works is the native detection fills the
info structs and we enter
/* Simple case, one core type or just looking for the arch. */
if (n_cores == 1 || arch)
which makes it behave like a homogonous system.
On big.LITTLE the big and little cores should have the same features,
so we can more the check outside that if.
Mine.
