[PATCH] D47799: [COFF] add /errorrepro to save reproducer on error

[Bob Haarman via Phabricator via llvm-commits]

inglorion created this revision.
inglorion added reviewers: rnk, ruiu.

This adds an /errorrepro:<dir> flag to lld-link. The flag
instructs the linker to write a repro.tar file in the specified
directory if linking fails. The functionality is modeled after
/linkrepro, which unconditionally writes the reproducer.


https://reviews.llvm.org/D47799

Files:
  lld/COFF/Driver.cpp
  lld/COFF/Driver.h
  lld/COFF/Options.td
  lld/test/COFF/errorrepro.test

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