[PATCH] D100217: [RISCV] Drop earlyclobber constraint from vwadd(u).wx, vwsub(u).wx, vfwadd.wf and vfwsub.wf.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: frasercrmck, HsiangKai, khchen, arcbbb, evandro.
Herald added subscribers: StephenFan, vkmr, luismarques, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, shiva0217, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, asb, hiraditya.
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The first source has the same EEW as the destination and the other
source is a scalar so the overlap constraints don't apply to
the unmasked version.

For the masked version we have a constraint that the destination
can't be V0 so that covers the only overlap issue there.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100217

Files:
  llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
  llvm/test/CodeGen/RISCV/rvv/vfwadd.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vfwadd.w-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vfwsub.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vfwsub.w-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vwadd.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vwadd.w-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vwaddu.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vwaddu.w-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vwsub.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vwsub.w-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vwsubu.w-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vwsubu.w-rv64.ll

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