[PATCH] D44490: [AArch64] Implement getArithmeticReductionCost

[Matthew Simpson via Phabricator via llvm-commits]

mssimpso created this revision.
mssimpso added reviewers: mcrosier, evandro, samparker, joelkevinjones, aemerson.
Herald added subscribers: kristof.beyls, javed.absar, rengolin.

This patch provides an implementation of getArithmeticReductionCost for AArch64. We can specialize the cost of add reductions since they are computed using the 'addv' instruction.


Repository:
  rL LLVM

https://reviews.llvm.org/D44490

Files:
  lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  lib/Target/AArch64/AArch64TargetTransformInfo.h
  test/Analysis/CostModel/AArch64/vector-reduce.ll
  test/Transforms/SLPVectorizer/AArch64/horizontal.ll

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