[all-commits] [llvm/llvm-project] ae4677: [RISCV] Remove support for vfmv.v.f with bf16 type...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ae4677c81aacbef17a5ecd3e693c4bad9f267c21
      https://github.com/llvm/llvm-project/commit/ae4677c81aacbef17a5ecd3e693c4bad9f267c21
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-06-13 (Thu, 13 Jun 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
    M llvm/test/CodeGen/RISCV/rvv/vfmv.v.f.ll

  Log Message:
  -----------
  [RISCV] Remove support for vfmv.v.f with bf16 type. (#95352)

This isn't used by clang and isn't in the rvv-intrinsic-doc.

The instruction requires Zvfh.

If the F register passed to the instruction isn't nan-boxed correctly,
the instruction will generate the wrong nan. So the instruction isn't a
generic move FPR16 to vector register instruction.



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