Mircea Trofin 64e56f8356 [NFC] Expose isRematerializable and copyHint from CalcSpillWeights ...

We need to reuse them for the ML regalloc eviction advisor, as we
'explode' the weight calculation into sub-features.

Differential Revision: https://reviews.llvm.org/D116074

2022-01-04 08:11:49 -08:00

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