HARD_REGNO_CALL_PART_CLOBBERED question (PR53595)

[Hans-Peter Nilsson]

On Fri, 8 Jun 2012, Georg-Johann Lay wrote:
> I observed that HARD_REGNO_CALL_PART_CLOBBERED gets called with
> hard registers that HARD_REGNO_MODE_OK would reject.
>
> Is it save to set HARD_REGNO_CALL_PART_CLOBBERED to FALSE for
> hard registers for which HARD_REGNO_MODE_OK is FALSE?

IMHO it shouldn't matter.  It seems like a bug that
HARD_REGNO_CALL_PART_CLOBBERED is called then.
Maybe an even more sinister bug is the cause?
(Like the one D.J. is/was on to recently.)

brgds, H-P