[PATCH] D24594: [IRObjectFile] Handle undefined weak symbols in RecordStreamer

[Davide Italiano via llvm-commits]

davide created this revision.
davide added a reviewer: rafael.
davide added subscribers: llvm-commits, tejohnson.

Before all the weak symbols were incorrectly reported as defined weak.
This patch extends the RecordStreamer state to include UndefinedWeak.
While I was here, I added a test to ensure we still handle defined weak correctly.
This is an attempt to fix PR30390.

https://reviews.llvm.org/D24594

Files:
  lib/Object/IRObjectFile.cpp
  lib/Object/RecordStreamer.cpp
  lib/Object/RecordStreamer.h
  test/Object/X86/nm-bitcodeweak.test
  test/Object/X86/nm-undefinedweak.test

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