[PATCH] Allow the RegisterCoalescer to remove copies to reserved registers

[Quentin Colombet]

> Do you know if I need to do anything specific here, or will the register replacement code that already exists take care of this in a sufficient way?


Ah sorry, I forgot to reply to this as I first pushed for the copy propagation :).
The existing register replacement code should handle this case just fine. Thought that may not be well tested :P.

Thanks,
Q.


http://reviews.llvm.org/D6978

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