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

[Wang Pengcheng via Phabricator via llvm-commits]

pcwang-thead added a comment.

In D117741#3257026 <https://reviews.llvm.org/D117741#3257026>, @jrtc27 wrote:

> This scheme seems rather inflexible. We can get away with it currently since the default behaviour of zero-filling CostPerUse elements out to the maximum list size works in every case, but I could see there being issues in future where you end up needing to be extremely verbose to avoid such behaviour.

Correct me if I am wrong, we shall define CostPerUse=[0, 0] explicitly for RVC registers?


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https://reviews.llvm.org/D117741