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clang-p2996/llvm/lib/CodeGen/RegAllocBase.cpp
Jakob Stoklund Olesen 165473247f Don't look for empty live ranges in the unions. 
Empty live ranges represent undef and still get allocated, but they
won't appear in LiveIntervalUnions.

Patch by Patrik Hägglund!

llvm-svn: 156685
2012-05-12 00:33:28 +00:00

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