[all-commits] [llvm/llvm-project] 8b0448: [AArch64][Analysis] Add on overhead costs for SVE ...

[david-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8b0448ce5d60abdeb7b2c7d33deca26690cacaf4
      https://github.com/llvm/llvm-project/commit/8b0448ce5d60abdeb7b2c7d33deca26690cacaf4
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2021-12-09 (Thu, 09 Dec 2021)

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

  Log Message:
  -----------
  [AArch64][Analysis] Add on overhead costs for SVE gathers and scatters

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.

Differential Revision: https://reviews.llvm.org/D115143