[all-commits] [llvm/llvm-project] 30b16e: [VPlan] Simplify trivial VPFirstOrderRecurrencePHI...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 30b16ec3415e7ddb597d096f818d011b1b4e6a63
      https://github.com/llvm/llvm-project/commit/30b16ec3415e7ddb597d096f818d011b1b4e6a63
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2025-06-16 (Mon, 16 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    A llvm/test/Transforms/LoopVectorize/first-order-recurrence-dead-instructions.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence.ll

  Log Message:
  -----------
  [VPlan] Simplify trivial VPFirstOrderRecurrencePHI recipes.

VPFirstOrderRecurrencePHIRecipes where the incoming values are the same
can be simplified and removed.

Fixes https://github.com/llvm/llvm-project/issues/144212.

The new test is added together with other related tests from
first-order-recurrence.ll



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