[all-commits] [llvm/llvm-project] b5cc19: [PAC][AArch64] Lower ptrauth constants in code (#9...

[Daniil Kovalev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b5cc19e572855136eb4080208a9bd5ecef785aa3
      https://github.com/llvm/llvm-project/commit/b5cc19e572855136eb4080208a9bd5ecef785aa3
  Author: Daniil Kovalev <dkovalev at accesssoftek.com>
  Date:   2024-06-27 (Thu, 27 Jun 2024)

  Changed paths:
    M llvm/docs/GlobalISel/GenericOpcode.rst
    M llvm/include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
    M llvm/include/llvm/CodeGen/ISDOpcodes.h
    M llvm/include/llvm/CodeGen/MachineModuleInfoImpls.h
    M llvm/include/llvm/Support/TargetOpcodes.def
    M llvm/include/llvm/Target/GenericOpcodes.td
    M llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
    M llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
    M llvm/lib/CodeGen/MachineModuleInfoImpls.cpp
    M llvm/lib/CodeGen/MachineVerifier.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
    M llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.cpp
    M llvm/lib/Target/AArch64/AArch64TargetObjectFile.h
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir
    A llvm/test/CodeGen/AArch64/GlobalISel/ptrauth-constant-in-code.ll
    A llvm/test/CodeGen/AArch64/ptrauth-constant-in-code.ll
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-cxx.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-variadics.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table.td
    M llvm/test/TableGen/GlobalISelEmitter.td

  Log Message:
  -----------
  [PAC][AArch64] Lower ptrauth constants in code (#94241)

Depends on #94240.

Define the following pseudos for lowering ptrauth constants in code:

- non-`extern_weak`:
  - no GOT load needed: `MOVaddrPAC` - similar to `MOVaddr`, with added
    PAC;
  - GOT load needed: `LOADgotPAC` - similar to `LOADgot`, with added PAC;
- `extern_weak`: `LOADauthptrstatic` - similar to `LOADgot`, but use a
  special stub slot named `sym$auth_ptr$key$disc` filled by dynamic linker
  during relocation resolving instead of a GOT slot.

---------

Co-authored-by: Ahmed Bougacha <ahmed at bougacha.org>



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