[PATCH] D117741: [RISCV] Set CostPerUse to 1 iff RVC is enabled

[Wang Pengcheng via Phabricator via llvm-commits]

pcwang-thead added a comment.

I have one question: Should we set `CostPerUse` for floating point registers? If so, we may need to unroll the register definitions for F&D manually.


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https://reviews.llvm.org/D117741