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Re: Combine four insns


On Fri, Aug 6, 2010 at 6:45 PM, Paolo Bonzini <bonzini@gnu.org> wrote:
>> But perhaps the optimization can be performed in another place than
>> combine? If it's just a relatively small set of common patterns, a
>> quick GIMPLE pass may be preferable.

I think this part of my message was much more interesting to respond to.


>> (I know, it's the old argument we've had before: You have a real fix
>> now for a real problem, others (incl. me) believe that to fix this
>> problem in combine is a step away from sane instruction selection that
>> GCC may not have for years to come...)
>
> In this case I actually think this argument is not going to work, since we
> have not even a prototype of a sane instruction selection pass and not even
> someone who is thinking about working on it.

Agreed. There is the work from Preston Briggs, but that appears to
have gone no-where, unfortunately.

Ciao!
Steven


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