[PATCH] D63809: [HardwareLoops] Loop counter guard Loop intrinsic

[Sam Parker via Phabricator via llvm-commits]

samparker updated this revision to Diff 206815.
samparker added a comment.

Added a check that we're replacing the conditional with an equivalent statement... The intrinsic tests for a non-zero value for the trip count, so we now ensure that the loop entry is guarded by icmp ne %trip.count, 0. This has meant the code has been moved around a bit from the previous patch.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63809/new/

https://reviews.llvm.org/D63809

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/IR/Intrinsics.td
  lib/CodeGen/HardwareLoops.cpp
  test/Transforms/HardwareLoops/loop-guards.ll
  test/Transforms/HardwareLoops/scalar-while.ll
  test/Transforms/HardwareLoops/unconditional-latch.ll

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