[llvm] [llvm][RISCV] Handle fpround and fpextend for zvfbfa without zvfbfmin (PR #164366)

[Jim Lin via llvm-commits]

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tclin914 wrote:

Could we just add a new RUN line in `llvm/test/CodeGen/RISCV/rvv/vfadd-vp.ll` for Zvfbfa

https://github.com/llvm/llvm-project/pull/164366