[PATCH] D39202: lld::COFF: better behavior when using as a library

[Rui Ueyama via Phabricator via llvm-commits]

ruiu created this revision.

Previously, the COFF driver would call exit(0) when called
as a library.  Now it takes `ExitEarly` option, and if it
is false, it doesn't exit.  So it is now more library-friendly.

Furthermore, link() calls freeArena() before returning, to
clean up resources.

Based on an Andrew Kelley's patch.


https://reviews.llvm.org/D39202

Files:
  lld/COFF/Config.h
  lld/COFF/Driver.cpp
  lld/COFF/Error.cpp
  lld/COFF/Error.h
  lld/MinGW/Driver.cpp
  lld/include/lld/Common/Driver.h
  lld/tools/lld/lld.cpp

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