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Re: Redundant logical operations left after early splitting


What's important here is that reg1 is being set multiple times.  You'd
be better off if you can twiddle the splitters to avoid this behavior.
If you need a new pseudo, then get one :-)

I agree with this, but...

Once you do that, local would propagate these things better.  That
still leaves the simplification & nop problem, but I'm pretty sure
that can be trivially fixed within local without resorting to running
another forwprop pass after splitting.

I want to try *moving* forwprop, not add another pass. Also, fwprop could in principle subsume local const/copyprop; it doesn't right now because I didn't want to compute def-use chains, but it could be changed in the future.

Paolo

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