[PATCH] D118020: [RISCV] Set CostPerUse for floating point registers

[Wang Pengcheng via Phabricator via llvm-commits]

pcwang-thead added a comment.

In D118020#3361467 <https://reviews.llvm.org/D118020#3361467>, @craig.topper wrote:

> What optimization level was this? Was fast-math enabled?

`O2` and `-ffast-math -fno-unroll-loops`.

We disabled `unroll-loops` because it may remain some problems under cover.


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