[PATCH] D133902: X86: Stop assigning register costs for longer encodings

[Alex Bradbury via Phabricator via llvm-commits]

asb added a comment.

D86836 <https://reviews.llvm.org/D86836> introduced support for setting multiple CostPerUse values (which we use on RISC-V to set a non-zero value for some registers only when the 'compressed' extension is enabled). Did you evaluate doing something similar to only set CostPerUse at Os or perhaps Oz?


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  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D133902/new/

https://reviews.llvm.org/D133902