[PATCH] D115143: [AArch64][Analysis] Add on overhead costs for gathers and scatters

[David Sherwood via Phabricator via llvm-commits]

david-arm created this revision.
david-arm added reviewers: sdesmalen, CarolineConcatto, RosieSumpter, dmgreen.
Herald added subscribers: ctetreau, hiraditya, kristof.beyls.
david-arm requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This patch adds on an overhead cost for gathers and scatters, which
is a rough estimate based on performance investigations I have
performed on SVE hardware for various micro-benchmarks.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D115143

Files:
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/AArch64/mem-op-cost-model.ll
  llvm/test/Analysis/CostModel/AArch64/sve-gather.ll
  llvm/test/Analysis/CostModel/AArch64/sve-scatter.ll
  llvm/test/Transforms/LoopVectorize/AArch64/sve-gather-scatter-cost.ll

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