[PATCH] MachineVerifier: Allow undef reads if a matching superreg is defined.

[Matthias Braun]

There are several test cases failing when enabling subregister liveness for the ARM target, you need this piece of code and an additional patch I haven't published yet to fix them. So I don't think this requires further tests.

Greetings

  Matthias


http://reviews.llvm.org/D6973

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