[PATCH] D111630: [LoopVectorize][CostModel] Update cost model for fmuladd intrinsic

[Rosie Sumpter via Phabricator via llvm-commits]

RosieSumpter created this revision.
RosieSumpter added reviewers: david-arm, kmclaughlin, sdesmalen, dmgreen, spatel, Ayal.
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This patch updates the cost model for ordered reductions so that a call
to the llvm.fmuladd intrinsic is modelled as a normal fmul instruction
plus the cost of an ordered fadd reduction.

This is a follow-up to D111555 <https://reviews.llvm.org/D111555>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D111630

Files:
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll
  llvm/test/Transforms/LoopVectorize/AArch64/strict-fadd-cost.ll

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