[PATCH] D125079: [fastregalloc] Enhance the heuristics for liveout in self loop.

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

> Only loosely relevant to this patch, but it seems sort of silly to me to do all this work to reconstruct information that we already had before PHIElimination.

Well the natural thing to do would be a liveness analysis, but I'm also not sure that is in the spirit of regalloc**fast**.


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https://reviews.llvm.org/D125079