https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92213
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-10-24
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
1. A pseudo register, 9625, was assigned to mask register k0 and
df_set_regs_ever_live was called.
2. improve_inheritance reassigned 9625 to a different hard register without
updating DF info.
3. mark_pseudo_dead was called on 9625 from process_bb_lives
EXECUTE_IF_SET_IN_SPARSESET (pseudos_live, i)
{
update_pseudo_point (i, curr_point, DEF_POINT);
mark_pseudo_dead (i);
}
mark_pseudo_dead did
lra_assert (!HARD_REGISTER_NUM_P (regno));
lra_reg_info[regno].conflict_hard_regs |= hard_regs_live;
with incorrect DF info.
