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Actually use the error return path rather than printing the duplicate
information then a separate error. But also just tidy up/deduplicate
some of the code for generating the diagnostic text.
llvm-svn: 269692
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IDs from dwp input files
If you're building dwps from other dwps, it can be hard to track down a
duplicate CU ID if it comes from two compilations of the same file in
different modes, etc. By including the .dwo path (which is hopefully
more unique than the file path) it can help track down where the
duplicates came from.
llvm-svn: 264520
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These diagnostics aren't perfect - in the case of merging several dwos
into dwps and those dwps into more dwps - just getting the message about
the original source file name might not be much help (since it's the
same in both dwos, by definition - but doesn't tell you which chain of
dwps to backtrack)
It might be worth adding the DW_AT_dwo_id to the split debug info to
improve the diagnostic experience - might help track down the duplicates
better.
llvm-svn: 261988
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