[PATCH] D84526: [yaml2obj] - Add a support for "<none>" value for all optional fields.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jhenderson, MaskRay.
Herald added a subscriber: emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.

It implements an approach suggested in the D84398 <https://reviews.llvm.org/D84398> thread.

With it the following:

  Sections:
    - Name:   .bar
      Type:   SHT_PROGBITS
      Offset: [[MACRO=<none>]]

works just like the `Offset` key was not specified.
It is useful for tests that want to have a default value for a field and to
have a way to override it at the same time.


https://reviews.llvm.org/D84526

Files:
  llvm/include/llvm/Support/YAMLTraits.h
  llvm/test/tools/yaml2obj/ELF/none-value.yaml

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