Combiner fix for PR79910

Segher Boessenkool segher@kernel.crashing.org
Fri Mar 17 22:16:00 GMT 2017


On Wed, Mar 15, 2017 at 12:09:18AM +0100, Bernd Schmidt wrote:
> I suppose at the moment we don't do 2->2 combinations, so we could 
> conditionalize this on having an i1.

You suppose wrong.  If one of the resulting insns is set_noop_p then
2->2 is allowed, for example.  Also in the hopefully not so far future
we will allow 2->2 in general.


Segher



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