[PATCH] D101430: [AMDGPU] Refactor hazard recognition IsHazardFn and IsExpiredFn

[Carl Ritson via Phabricator via llvm-commits]

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While counting wait states remove early termination probe using
nullptr with IsExpiredFn. This is the only functional change.

Having removed the use of null pointers, refactor IsHazardFn and
IsExpiredFn to use constant references as these should not be
mutating the instructions visited.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101430

Files:
  llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
  llvm/lib/Target/AMDGPU/GCNHazardRecognizer.h

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