[all-commits] [llvm/llvm-project] eeeaad: Add !metadata_section_kind global variable metadat...

[Orlando Cazalet-Hyams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: eeeaad979cc68b19bdd3ed27db579d2f8974f3a8
      https://github.com/llvm/llvm-project/commit/eeeaad979cc68b19bdd3ed27db579d2f8974f3a8
  Author: Orlando Cazalet-Hyams <orlando.hyams at sony.com>
  Date:   2026-07-24 (Fri, 24 Jul 2026)

  Changed paths:
    M llvm/docs/LangRef.md
    M llvm/include/llvm/IR/FixedMetadataKinds.def
    M llvm/lib/Target/TargetLoweringObjectFile.cpp
    A llvm/test/CodeGen/X86/metadata_section_kind.ll

  Log Message:
  -----------
  Add !metadata_section_kind global variable metadata (#211524)

Similar to !exclude in that this attempts to guide section + flag
choices in a generic/abstract way.

`!exclude` tells LLVM to use the generic `SectionKind::Exclude` for the
globals. Likewise, `!metadata_section_kind` tells LLVM to use
`SectionKind::Metadata`.

The added docs go into a little more detail.

This is needed for the dynamic debugging feature, otherwise there's no
way to avoid `SHF_EXCLUDE` or `SHF_ALLOC` flags being added to the
section without special handling based on its name. We've moved to using
a new section type for dynamic debugging and we don't want to rely on
the name, which may be omitted.



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