[llvm] [RISCV] Don't cost Fmv for Zfinx in isFPImmLegal. (PR #107361)

[Philip Reames via llvm-commits]

https://github.com/preames approved this pull request.

LGTM

Though, I vaguely remember looking at this before and deciding not to do this because of some kind of negative interaction.  Unfortunately, I don't remember details, and it's not a configuration I care much about, so it might not have been anything particularly major.  I don't spot anything in the diffs now, so hopefully I'm just misremembering?

https://github.com/llvm/llvm-project/pull/107361