[PATCH] D67539: [ARM][LowOverheadLoops] Add LR def safety check

[Sam Parker via Phabricator via llvm-commits]

samparker updated this revision to Diff 220462.
samparker added a comment.

- Removed the template from SearchUse as we only use it once.
- Updated the searches to iterate over a range.
- Tried to see if the iterator kind, for SearchDef, could be implicit, but I didn't find a way to have a generic 'iterator' for the machine block - one without its direction defined.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67539/new/

https://reviews.llvm.org/D67539

Files:
  lib/Target/ARM/ARMLowOverheadLoops.cpp
  test/CodeGen/Thumb2/LowOverheadLoops/cond-mov.mir
  test/CodeGen/Thumb2/LowOverheadLoops/end-positive-offset.mir
  test/CodeGen/Thumb2/LowOverheadLoops/mov-after-dls.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-call.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-read.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-spill.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-after-write.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-non-loop.mir
  test/CodeGen/Thumb2/LowOverheadLoops/revert-while.mir
  test/CodeGen/Thumb2/LowOverheadLoops/safe-def-no-mov.mir
  test/CodeGen/Thumb2/LowOverheadLoops/unsafe-liveout.mir
  test/CodeGen/Thumb2/LowOverheadLoops/unsafe-use-after.mir
  test/CodeGen/Thumb2/LowOverheadLoops/while-negative-offset.mir
  test/CodeGen/Thumb2/LowOverheadLoops/while.mir

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