[all-commits] [llvm/llvm-project] 828a86: [AArch64] Reduce the costs of and/or/xor reduction...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 828a867ee010cdd832c43f7d844959adb4884b2e
      https://github.com/llvm/llvm-project/commit/828a867ee010cdd832c43f7d844959adb4884b2e
  Author: David Green <david.green at arm.com>
  Date:   2025-07-16 (Wed, 16 Jul 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AArch64/reduce-and.ll
    M llvm/test/Analysis/CostModel/AArch64/reduce-or.ll
    M llvm/test/Analysis/CostModel/AArch64/reduce-xor.ll
    M llvm/test/Transforms/PhaseOrdering/AArch64/quant_4x4.ll

  Log Message:
  -----------
  [AArch64] Reduce the costs of and/or/xor reductions (#148553)

Since the costs were added the codegen for i8/i16 and/or/xor reductions
has improved. This updates the cost model to produce the same costs in
terms of number of instructions.



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