[PATCH] D66576: [Regalloc][WIP] Increase CSR cost in RegAllocGreedy to favour splitting/spill over CSR first use

[Zixuan Wu (Zeson) via Phabricator via llvm-commits]

wuzish added a comment.

Could anybody run some bmk to see the performance result of AARCH64 and X86?
I have run on PowerPC, it has good influence in some bmks of spec2017 and no obvious degression.


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https://reviews.llvm.org/D66576