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Re: INSN_CODE_NUMBER of INT_MAX
On Sat, Jul 28, 2001 at 08:19:00PM +0200, Jan Hubicka wrote:
> > You could try instead to
> > - find if there is a previous set where you can put the REG_EQUAL note
> > (i.e. it is in the same set of flow paths and sets the same register,
> > and there is no non-trivial REG_EQUAL note already there)
> Hmm, shouldn't it be simply previous set of the register in case it is in the
> same basic block?
> I can teach delete_trivially_dead_insns to do this trick.
This is the only sensible thing to do. The other two options pessimize
all of the optimizers at the expense of a not-terribly-good register
allocator.
r~