scheduling problems again

[Mike Stump]

> From: amylaar@cygnus.co.uk
> To: law@cygnus.com (Jeffrey A Law)
> Date: Wed, 28 Jan 1998 16:34:44 +0000 (GMT)
> Cc: egcs@cygnus.com

> Actually, REG_DEAD notes still have some meaning after reload: they
> mean that the register dies somewhere in the current basic block.
> Thus, when this is good enough, the current definition of
> dead_or_set_p is useful.

If that is the case, sounds like we should have a new function like
dead_or_set_in_bblock_p in addition to dead_or_set_p.