David Blaikie 81959a2730 llvm-symbolizer: Avoid calling getFromOffset when the index entry is already available ...

Especially for symbolizer it can be efficient to have to search through
the entire index when it isn't needed - llvm-symbolizer looks up only a
few CUs & already has an index available in getUnitForEntry, once it's
passed down to DWARFUnitHeader::extract then there's no need for it to
call getFromOffset.

llvm-svn: 347134

2018-11-17 05:57:58 +00:00

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