[PATCH] D28684: [Support/Compression] - Change zlib API to return Error instead of custom status.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: rafael, davide.
grimar added subscribers: llvm-commits, grimar, evgeny777.

Previously API returned custom enum values.
Patch changes it to return Error with string description.
That should help users to report errors in universal way.


https://reviews.llvm.org/D28684

Files:
  include/llvm/Support/Compression.h
  lib/MC/ELFObjectWriter.cpp
  lib/Object/Decompressor.cpp
  lib/ProfileData/InstrProf.cpp
  lib/Support/Compression.cpp
  unittests/Support/CompressionTest.cpp

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