Matthias Braun ffe40dd69e RegAllocGreedy: Follow-up to r296722 ...

We can now end up in situations where we initiate LiveIntervalUnion
queries with different SubRanges against the same register unit, so the
assert() no longer holds in all cases. Just recalculate now when we know
the cache is out of date.

llvm-svn: 296928

2017-03-03 23:27:20 +00:00

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