[all-commits] [llvm/llvm-project] 6a8606: [VPlan] Only store RecurKind + FastMathFlags in VP...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6a8606e99e399ccc68a89b1c22b396e00021d3fb
      https://github.com/llvm/llvm-project/commit/6a8606e99e399ccc68a89b1c22b396e00021d3fb
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-03-24 (Mon, 24 Mar 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
    M llvm/test/Transforms/LoopVectorize/vplan-printing.ll
    M llvm/unittests/Transforms/Vectorize/VPlanTest.cpp

  Log Message:
  -----------
  [VPlan] Only store RecurKind + FastMathFlags in VPReductionRecipe. NFCI (#131300)

VPReductionRecipes take a RecurrenceDescriptor, but only use the
RecurKind and FastMathFlags in it when executing. This patch makes the
recipe more lightweight by stripping it to only take the latter two.

The motiviation for this is to simplify an upcoming patch to support
in-loop AnyOf reductions. For an in-loop AnyOf reduction we want to
create an Or reduction, and by using RecurKind we can create an
arbitrary reduction without needing a full RecurrenceDescriptor.



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