[all-commits] [llvm/llvm-project] 649cf4: [AArch64] Expand the SVE min/max reduction costs t...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 649cf4514dd32e0e7944f6f8d82a1b72c87a2870
      https://github.com/llvm/llvm-project/commit/649cf4514dd32e0e7944f6f8d82a1b72c87a2870
  Author: David Green <david.green at arm.com>
  Date:   2021-08-05 (Thu, 05 Aug 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AArch64/reduce-minmax.ll
    M llvm/test/Analysis/CostModel/AArch64/vector-reduce.ll

  Log Message:
  -----------
  [AArch64] Expand the SVE min/max reduction costs to NEON

This takes the existing SVE costing for the various min/max reduction
intrinsics and expands it to NEON, where I believe it applies equally
well.

In the process it changes the lowering to use min/max cost, as opposed
to summing up the cost of ICmp+Select.

Differential Revision: https://reviews.llvm.org/D106239