[PATCH] D152260: [DAGCombiner] Use generalized pattern matcher in visitFMA to support vp.fma.

[Yeting Kuo via Phabricator via llvm-commits]

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Note: Some patterns in visitFMA are needed refined to support splat of constant.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152260

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/RISCV/rvv/vfma-vp-combine.ll

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