Mikael Holmen adf5e0d91d Use TRI->regsOverlap() in MachineBasicBlock::computeRegisterLiveness ...

Summary:
For the loop that used MCRegAliasIterator this should be NFC.

For the loop that previously used MCSubRegIterator we should
now detect more cases where the register is actually live out that
we previously missed.

Reviewers: MatzeB, arsenm

Reviewed By: MatzeB

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D52410

llvm-svn: 342944

2018-09-25 06:10:04 +00:00

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