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Commit f7b2bce1 authored by Derek Schuff's avatar Derek Schuff
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Replace MachineRegisterInfo::TracksLiveness with a MachineFunctionProperty 

Use the MachineFunctionProperty mechanism to indicate whether the
liveness info is accurate instead of a bool flag on MRI.
Keeps the MRI accessor function for convenience. NFC

Differential Revision: http://reviews.llvm.org/D18767

llvm-svn: 266020
parent 74c0c096
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