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Commit 8dd26f00 authored by Andrew Trick's avatar Andrew Trick
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MI Sched: record local vreg uses. 

This will be used to compute the cyclic critical path and to
update precomputed per-node pressure differences.
In the longer term, it could also be used to speed up LiveInterval
update by avoiding visiting all global vreg users.

llvm-svn: 189118
parent cfb42ce9
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