[DWARFDebug] Fix another case of overlapping ranges
Summary:
In r257979, I added code to ensure that we wouldn't merge DebugLocEntries if
the pieces they describe overlap. Unfortunately, I failed to cover the case,
where there may have multiple active Expressions in the entry, in which case we
need to make sure that no two values overlap before we can perform the merge.
This fixed PR26148.
Reviewers: aprantl
Differential Revision: http://reviews.llvm.org/D16742
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259696
91177308-0d34-0410-b5e6-
96231b3b80d8
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