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6382d2cadd
LiveInterval::overlapsFrom dereferences end() if it is called on an empty interval. It would be reasonable to just return false - an empty interval doesn't overlap anything, but I want to know who is doing it first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108264 91177308-0d34-0410-b5e6-96231b3b80d8