https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117064
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-10-11
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Maybe the hook can also be removed, it's documentation says
--
@defmac HARD_REGNO_RENAME_OK (@var{from}, @var{to})
A C expression that is nonzero if it is OK to rename a hard register
@var{from} to another hard register @var{to}.
One common use of this macro is to prevent renaming of a register to
another register that is not saved by a prologue in an interrupt
handler.
The default is always nonzero.
--
but the RA must have enough information to avoid similar issues. I noticed
sel-sched.cc also uses HARD_REGNO_RENAME_OK.
