Dan Gohman 5cf27f81f4 Split out the code for finding a unique loop predecessor from
getLoopPreheader into a separate function, for clients which don't
require a proper preheader.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106543 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22 15:25:42 +00:00
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