[all-commits] [llvm/llvm-project] 1aa8a6: [VPlan] Compute cost for most opcodes in VPWidenRe...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1aa8a6f6917edbdcad53afad3b00c7e86aa57ffe
      https://github.com/llvm/llvm-project/commit/1aa8a6f6917edbdcad53afad3b00c7e86aa57ffe
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-08-16 (Fri, 16 Aug 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

  Log Message:
  -----------
  [VPlan] Compute cost for most opcodes in VPWidenRecipe (NFCI). (#98764)

Implement VPWidenRecipe::computeCost for most cases (except 
UDiv,SDiv,URem,SRem which require additional logic).

Note that this specializes `::computeCost` instead of `::cost`, as
`VPRecipeBase::cost` is responsible for skipping cost-computations
for pre-computed recipes for now.

The most recent version of the VPlan-based cost model introduction 
has been committed on Jul 10 (b841e2eca3b5c8b) and we should
probably give it at least a week in case additional mismatches surface.

PR: https://github.com/llvm/llvm-project/pull/98764



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