[PATCH] D94242: [RISCV] Add scalable vector fcmp ISel patterns

[Fraser Cormack via Phabricator via llvm-commits]

frasercrmck created this revision.
frasercrmck added reviewers: craig.topper, rogfer01, evandro, HsiangKai.
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Original patch by @rogfer01.

All ordered comparisons except ONE are supported natively, and all
unordered comparisons except UNE are expanded into sequences involving
explicit NaN checks and mask arithmetic.

There is still optimization work to be done in order to support swapped
'vf' operations, where the splat is the LHS of the operation.

Also add support for floating-point splat_vector.

Authored-by: Roger Ferrer Ibanez <rofirrim at gmail.com>
Co-Authored-by: Fraser Cormack <fraser at codeplay.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94242

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
  llvm/test/CodeGen/RISCV/rvv/setcc-fp-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/setcc-fp-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vsplats-fp.ll

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