https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82975
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ktkachov at gcc dot
gnu.org
--- Comment #5 from ktkachov at gcc dot gnu.org ---
This is indeed an arm target issue. As part of the computation in rtlanal.c it
uses REGNO_OK_FOR_INDEX_P which for arm eventually expands to something
referencing reg_renumber. But during sched1 (where we ICE) we haven't run IRA
yet to setup reg_renumber, so it's NULL at that point, causing the segfault. We
should guard against that case in the definition of REGNO_OK_FOR_INDEX_P and
REGNO_MODE_OK_FOR_BASE_P.
The aarch64 port, for example, bails out when reg_renumber is not set.
Testing a simple patch.
