[PATCH] D128148: [XCOFF] write the aux header when the visibility is specified in XCOFF32.

[Esme Yi via Phabricator via llvm-commits]

Esme created this revision.
Esme added reviewers: shchenz, DiggerLin, daltenty, jhenderson, PowerPC.
Herald added subscribers: hiraditya, nemanjai.
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The n_type field in the symbol table entry has two interpretations in XCOFF32, and a single interpretation in XCOFF64.
The new interpretation is used in XCOFF32 if the value of the o_vstamp field in the auxiliary header is 2.
In XCOFF64 and the new XCOFF32 interpretation, the n_type field is used for the symbol type and visibility.

The patch writes the aux header with an o_vstamp field value of 2 when the visibility is specified in XCOFF32 to make the new XCOFF32 interpretation used.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128148

Files:
  llvm/include/llvm/BinaryFormat/XCOFF.h
  llvm/lib/MC/XCOFFObjectWriter.cpp
  llvm/test/CodeGen/PowerPC/aix-aux-header.ll
  llvm/test/CodeGen/PowerPC/aix-xcoff-visibility.ll

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