[all-commits] [llvm/llvm-project] 5f1bb6: [AArch64][PAC] Lower ptrauth constants in code for...

[Ahmed Bougacha via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5f1bb62c6bb83b9a46e3c6a45999d4468edb11e0
      https://github.com/llvm/llvm-project/commit/5f1bb62c6bb83b9a46e3c6a45999d4468edb11e0
  Author: Ahmed Bougacha <ahmed at bougacha.org>
  Date:   2024-07-10 (Wed, 10 Jul 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineModuleInfo.h
    M llvm/include/llvm/CodeGen/MachineModuleInfoImpls.h
    M llvm/lib/CodeGen/MachineModuleInfoImpls.cpp
    M llvm/lib/MC/MCMachOStreamer.cpp
    M llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.cpp
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.h
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/ptrauth-constant-in-code.ll
    M llvm/test/CodeGen/AArch64/ptrauth-constant-in-code.ll

  Log Message:
  -----------
  [AArch64][PAC] Lower ptrauth constants in code for MachO. (#97665)

This also adds support for auth stubs on MachO using __DATA,__auth_ptr.

Some of the machinery for auth stubs is already implemented;  this
generalizes that a bit to support MachO, and moves some of the shared
logic into MMIImpls.

In particular, this originally had an AuthStubInfo struct, but we no
longer need it beyond a single MCExpr.  So this provides variants of
the symbol stub helper type declarations and functions for "expr
stubs", where a stub points at an arbitrary MCExpr, rather than
a simple MCSymbol (and a bit).



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