[all-commits] [llvm/llvm-project] 1e1b9b: [VPlan] Simplify BLEND %a, %b, NOT(%m) -> BLEND %b...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1e1b9bccc0a7dab59eafb78e75f59b3305eb645c
      https://github.com/llvm/llvm-project/commit/1e1b9bccc0a7dab59eafb78e75f59b3305eb645c
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-02-27 (Thu, 27 Feb 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/masked-call.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/strict-fadd.ll
    M llvm/test/Transforms/LoopVectorize/ARM/mve-selectandorcost.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/blocks-with-dead-instructions.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/mask-index-type.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/vectorize-force-tail-with-evl-cond-reduction.ll
    M llvm/test/Transforms/LoopVectorize/X86/drop-poison-generating-flags.ll
    M llvm/test/Transforms/LoopVectorize/X86/replicate-uniform-call.ll
    M llvm/test/Transforms/LoopVectorize/blend-in-header.ll
    M llvm/test/Transforms/LoopVectorize/if-conversion.ll
    M llvm/test/Transforms/LoopVectorize/if-pred-non-void.ll
    M llvm/test/Transforms/LoopVectorize/if-pred-stores.ll
    M llvm/test/Transforms/LoopVectorize/induction.ll
    M llvm/test/Transforms/LoopVectorize/instruction-only-used-outside-of-loop.ll
    M llvm/test/Transforms/LoopVectorize/invariant-store-vectorization-2.ll
    M llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll
    M llvm/test/Transforms/LoopVectorize/unused-blend-mask-for-first-operand.ll

  Log Message:
  -----------
  [VPlan] Simplify BLEND %a, %b, NOT(%m) -> BLEND %b, %a, %m. (#128375)

Avoid negations for normalized blends by reordering operands.

PR: https://github.com/llvm/llvm-project/pull/128375



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