[PATCH] D62907: [ARM] Implement TTI::isHardwareLoopProfitable

[Sam Parker via Phabricator via llvm-commits]

samparker updated this revision to Diff 204252.
samparker added a comment.

- Now checking for loop invariant trip count.
- Added tests for double and half precision floats.
- Now checking the new hasLOB target feature.

I didn't use TLI in isLoweredToCall because it requires an Instruction and it doesn't seem to give any meaningful results when an intrinsic call is passed either. Instead, I'm just checking the precision against the subtarget supported features.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62907/new/

https://reviews.llvm.org/D62907

Files:
  lib/Target/ARM/ARMTargetTransformInfo.cpp
  lib/Target/ARM/ARMTargetTransformInfo.h
  test/Transforms/HardwareLoops/ARM/calls.ll
  test/Transforms/HardwareLoops/ARM/counter.ll
  test/Transforms/HardwareLoops/ARM/do-rem.ll
  test/Transforms/HardwareLoops/ARM/fp-emulation.ll
  test/Transforms/HardwareLoops/ARM/simple-do.ll
  test/Transforms/HardwareLoops/ARM/structure.ll

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