Manman Ren 72098b2c91 Added assertion in getVRegDef of MachineRegisterInfo to make sure the virtual ...

register does not have multiple definitions. Modified TwoAddressInstructionPass
to use getUniqueVRegDef instead of getVRegDef.

llvm-svn: 159545

2012-07-02 18:55:36 +00:00

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