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Jakob Stoklund Olesen 533711462c Allow for loops in LiveIntervals::pruneValue().
It is possible that the live range of the value being pruned loops back
into the kill MBB where the search started. When that happens, make sure
that the beginning of KillMBB is also pruned.

Instead of starting a DFS at KillMBB and skipping the root of the
search, start a DFS at each KillMBB successor, and allow the search to
loop back to KillMBB.

This fixes PR14078.

llvm-svn: 165872
2012-10-13 16:15:31 +00:00
2012-10-09 23:48:34 +00:00
2012-10-08 16:40:38 +00:00
2012-04-03 23:09:22 +00:00
2012-10-10 18:20:49 +00:00
2012-07-11 17:34:12 +00:00

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