[PATCH] D123569: [AMDGPU] Try to avoid inserting duplicate s_inst_prefetch

[Carl Ritson via Phabricator via llvm-commits]

critson created this revision.
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Check for existing s_inst_prefetch instructions when
configuring prefetches during loop alignment.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123569

Files:
  llvm/lib/Target/AMDGPU/SIISelLowering.cpp
  llvm/test/CodeGen/AMDGPU/no-dup-inst-prefetch.ll

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