[all-commits] [llvm/llvm-project] b93d74: [ARM] Basic getArithmeticReductionCost reduction c...

[David Green via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b93d74ac9c4e304db6fbc434992c098104ba94a5
      https://github.com/llvm/llvm-project/commit/b93d74ac9c4e304db6fbc434992c098104ba94a5
  Author: David Green <david.green at arm.com>
  Date:   2020-10-17 (Sat, 17 Oct 2020)

  Changed paths:
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
    M llvm/lib/Target/ARM/ARMTargetTransformInfo.h
    M llvm/test/Analysis/CostModel/ARM/mve-vecreduce-add.ll

  Log Message:
  -----------
  [ARM] Basic getArithmeticReductionCost reduction costs

This adds some basic costs for MVE reductions - currently just costing
the simple legal add vectors as a single MVE instruction. More complex
costing can be added in the future when the framework more readily
allows it.

Differential Revision: https://reviews.llvm.org/D88980