[PATCH] D119622: [RISCV] Match vwmulsu_vx with scalar splat input.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: Chenbing.Zheng, frasercrmck, benshi001, arcbbb.
Herald added subscribers: VincentWu, luke957, achieveartificialintelligence, vkmr, evandro, luismarques, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, asb, hiraditya.
craig.topper requested review of this revision.
Herald added subscribers: pcwang-thead, eopXD, MaskRay.
Herald added a project: LLVM.

This is a more generic version of D119110 <https://reviews.llvm.org/D119110> that uses MaskedValueIsZero
to do the matching and SimplifyDemandedBits to remove any unneeded
AND instructions.

Tests were taken from D119110 <https://reviews.llvm.org/D119110>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119622

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmulsu.ll

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