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

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

In D66576#1660216 <https://reviews.llvm.org/D66576#1660216>, @steven.zhang wrote:

> .AMDGPU also override the getCSRFirstUseCost() but your patch didn't catch that. And would you please post some improve number for powerpc of this patch ?


Not done; would be good to have some perf numbers here, for ppc and x86


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