[PATCH] D104163: [RISCV] Add isel patterns to match vmacc/vmadd/vnmsub/vnmsac from add/sub and mul.

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 353082.
craig.topper added a comment.

Limit to cases where mul has a single use. There may be a better heuristic here,
but this is a simple starting point.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104163/new/

https://reviews.llvm.org/D104163

Files:
  llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int.ll
  llvm/test/CodeGen/RISCV/rvv/vmadd-sdnode.ll
  llvm/test/CodeGen/RISCV/rvv/vmulh-sdnode-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vnmsub-sdnode.ll
  llvm/test/CodeGen/RISCV/rvv/vrem-sdnode-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vrem-sdnode-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vremu-sdnode-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vremu-sdnode-rv64.ll

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