Cameron Zwarich bfebb41984 Add support for updating the LiveIntervals of registers used by 'exotic' ...

terminators that actually have register uses when splitting critical edges.

This commit also introduces a method repairIntervalsInRange() on LiveIntervals,
which allows for repairing LiveIntervals in a small range after an arbitrary
target hook modifies, inserts, and removes instructions. It's pretty limited
right now, but I hope to extend it to support all of the things that are done
by the convertToThreeAddress() target hooks.

llvm-svn: 175382

2013-02-17 00:10:44 +00:00

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