[all-commits] [llvm/llvm-project] a5ce66: [RISCV] Remove RISCVISD::FP_ROUND_BF16.

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a5ce66423bfff6f2185e5fe48bc6ffc0ade7df4d
      https://github.com/llvm/llvm-project/commit/a5ce66423bfff6f2185e5fe48bc6ffc0ade7df4d
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-09-03 (Tue, 03 Sep 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/lib/Target/RISCV/RISCVInstrInfoZfbfmin.td

  Log Message:
  -----------
  [RISCV] Remove RISCVISD::FP_ROUND_BF16.

Use isel patterns on regular FP_ROUND. For double->bf16 we need
to emit two instructions. Note the double->bf16 conversion does
double rounding, but I don't know a good way to fix that.



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