[all-commits] [llvm/llvm-project] a3283a: [PAC] Add support for __ptrauth type qualifier (#1...

[Akira Hatanaka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a3283a92aea147e89d9d404fa7c8500223c7c22a
      https://github.com/llvm/llvm-project/commit/a3283a92aea147e89d9d404fa7c8500223c7c22a
  Author: Akira Hatanaka <ahatanak at gmail.com>
  Date:   2025-04-15 (Tue, 15 Apr 2025)

  Changed paths:
    M clang/docs/PointerAuthentication.rst
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/AST/Type.h
    M clang/include/clang/Basic/Attr.td
    M clang/include/clang/Basic/AttrDocs.td
    M clang/include/clang/Basic/DiagnosticParseKinds.td
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Basic/Features.def
    M clang/include/clang/Basic/TokenKinds.def
    M clang/include/clang/Parse/Parser.h
    M clang/include/clang/Sema/Sema.h
    M clang/lib/AST/ASTContext.cpp
    M clang/lib/AST/DeclCXX.cpp
    M clang/lib/AST/ItaniumMangle.cpp
    M clang/lib/AST/MicrosoftMangle.cpp
    M clang/lib/AST/TypePrinter.cpp
    M clang/lib/CodeGen/CGClass.cpp
    M clang/lib/CodeGen/CGDebugInfo.cpp
    M clang/lib/CodeGen/CGDecl.cpp
    M clang/lib/CodeGen/CGExpr.cpp
    M clang/lib/CodeGen/CGExprConstant.cpp
    M clang/lib/CodeGen/CGExprScalar.cpp
    M clang/lib/CodeGen/CGPointerAuth.cpp
    M clang/lib/CodeGen/CodeGenFunction.h
    M clang/lib/Parse/ParseDecl.cpp
    M clang/lib/Sema/SemaCast.cpp
    M clang/lib/Sema/SemaChecking.cpp
    M clang/lib/Sema/SemaDecl.cpp
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/lib/Sema/SemaExpr.cpp
    M clang/lib/Sema/SemaExprCXX.cpp
    M clang/lib/Sema/SemaObjCProperty.cpp
    M clang/lib/Sema/SemaOverload.cpp
    M clang/lib/Sema/SemaType.cpp
    M clang/lib/Sema/TreeTransform.h
    M clang/test/AST/ast-dump-ptrauth-json.cpp
    A clang/test/CodeGen/ptrauth-debuginfo.c
    A clang/test/CodeGen/ptrauth-qualifier-const-init.c
    A clang/test/CodeGen/ptrauth-qualifier-function.c
    A clang/test/CodeGen/ptrauth-qualifier-loadstore.c
    A clang/test/CodeGenCXX/mangle-itanium-ptrauth.cpp
    A clang/test/CodeGenCXX/mangle-ms-ptrauth.cpp
    A clang/test/CodeGenCXX/ptrauth-qualifier-struct.cpp
    A clang/test/CodeGenObjCXX/ptrauth-struct-cxx-abi.mm
    A clang/test/Parser/ptrauth-qualifier.c
    A clang/test/Preprocessor/ptrauth_extension.c
    A clang/test/Sema/ptrauth-atomic-ops.c
    A clang/test/Sema/ptrauth-qualifier.c
    A clang/test/SemaCXX/ptrauth-qualifier.cpp
    A clang/test/SemaCXX/ptrauth-template-parameters.cpp
    A clang/test/SemaObjC/ptrauth-qualifier.m
    M libcxxabi/test/test_demangle.pass.cpp
    M llvm/include/llvm/Demangle/MicrosoftDemangle.h
    M llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h
    M llvm/lib/Demangle/MicrosoftDemangle.cpp
    M llvm/lib/Demangle/MicrosoftDemangleNodes.cpp
    A llvm/test/Demangle/ms-ptrauth.test

  Log Message:
  -----------
  [PAC] Add support for __ptrauth type qualifier (#100830)

The qualifier allows programmer to directly control how pointers are
signed when they are stored in a particular variable.

The qualifier takes three arguments: the signing key, a flag specifying
whether address discrimination should be used, and a non-negative
integer that is used for additional discrimination.

```
typedef void (*my_callback)(const void*);
my_callback __ptrauth(ptrauth_key_process_dependent_code, 1, 0xe27a) callback;
```

Co-Authored-By: John McCall rjmccall at apple.com



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