[PATCH] D47655: [MachineOutliner] Don't outline sequences where x16/x17/nzcv are live across

[Jessica Paquette via Phabricator via llvm-commits]

paquette updated this revision to Diff 152547.
paquette added a comment.

Fixed my mistake using LiveRegUnits. This just walks back across the entire MBB now, so that we know if a register is live across the candidate.

Also extended the test to handle some more edge-cases and complex behaviour, along with some explanation of what's tested.


https://reviews.llvm.org/D47655

Files:
  include/llvm/CodeGen/MachineOutliner.h
  lib/CodeGen/MachineOutliner.cpp
  lib/Target/AArch64/AArch64InstrInfo.cpp
  lib/Target/AArch64/AArch64InstrInfo.h
  test/CodeGen/AArch64/machine-outliner-bad-register.mir

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