[all-commits] [llvm/llvm-project] d2be26: [clang] Add clang::no_outline Attribute (#163666)

[Sam Elliott via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d2be26a9f2b75e87969c5943d48ea66c5f336d6d
      https://github.com/llvm/llvm-project/commit/d2be26a9f2b75e87969c5943d48ea66c5f336d6d
  Author: Sam Elliott <aelliott at qti.qualcomm.com>
  Date:   2026-02-13 (Fri, 13 Feb 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/Attr.td
    M clang/include/clang/Basic/AttrDocs.td
    M clang/lib/CodeGen/CodeGenModule.cpp
    A clang/test/CodeGen/attr-no-outline.c
    A clang/test/CodeGenObjC/attr-no-outline.m
    M clang/test/Misc/pragma-attribute-supported-attributes-list.test
    A clang/test/Sema/attr-no-outline.c
    A clang/test/Sema/attr-no-outline.cpp

  Log Message:
  -----------
  [clang] Add clang::no_outline Attribute (#163666)

This change:

- Adds a `[[clang::no_outline]]` function attribute for C and C++. There
is no equivalent GNU syntax for this attribute, so no `__attribute__`
syntax.
- Uses the presence of `[[clang::no_outline]]` to add the `nooutline`
attribute to IR function definitions.
- Adds test for the above.

The `nooutline` attribute disables both the Machine Outliner (enabled at
Oz for some targets), and the IR Outliner (disabled by default).

Fixes #144135



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