[llvm-commits] [patch] Delete the old IL level tail duplicator

[Rafael Ávila de Espíndola]

The old tail duplicator doesn't use the ssa updater and therefore has to 
run really early in the pipeline.

I have tried creating a new one, but don't have the time to finish it 
right now. In any case, we haven't run the existing one for some time 
and should probably delete it.

Is the attached patch OK?

Cheers,
Rafael
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