[PATCH] D144378: [LoopDataPrefetch] Support metadata llvm.loop.prefetch for prefetch

[Jiang Haibo via Phabricator via llvm-commits]

Flightor created this revision.
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  Implementation of the actual funtions of #pragma clang loop [no]prefetch
  
  1. If hoist/sink occurs in the load/store instruction, the metadata is
  stripped from the instruction.
  2. Add support for llvm.loop.prefetch in LoopDataPrefetch.


https://reviews.llvm.org/D144378

Files:
  llvm/docs/LangRef.rst
  llvm/include/llvm/IR/FixedMetadataKinds.def
  llvm/lib/Analysis/VectorUtils.cpp
  llvm/lib/Transforms/Scalar/LICM.cpp
  llvm/lib/Transforms/Scalar/LoopDataPrefetch.cpp
  llvm/test/Transforms/LICM/hoist-load-with-prefetch.ll
  llvm/test/Transforms/LoopDataPrefetch/pragma-loop-prefetch-noprefetch.ll
  llvm/test/Transforms/LoopDataPrefetch/pragma-loop-prefetch-vectorize.ll

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