[all-commits] [llvm/llvm-project] 4bb4ad: [AArch64][PAC] Use enum to describe LR signing con...

[Anatoly Trosinenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4bb4ad477d80f66a267311afe9b656330caf3893
      https://github.com/llvm/llvm-project/commit/4bb4ad477d80f66a267311afe9b656330caf3893
  Author: Anatoly Trosinenko <atrosinenko at accesssoftek.com>
  Date:   2025-11-20 (Thu, 20 Nov 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64MachineFunctionInfo.cpp
    M llvm/lib/Target/AArch64/AArch64MachineFunctionInfo.h

  Log Message:
  -----------
  [AArch64][PAC] Use enum to describe LR signing condition (NFC) (#168548)

Express the condition of signing the return address in a function using
an `enum class` instead of a pair of `bool`s. Define `enum class
SignReturnAddress` with the values corresponding to the three possible
modes that can be requested via "sign-return-address" function
attribute.

Previously, there were two overloads of `shouldSignReturnAddress`
accepting either `const MachineFunction &` or `bool` argument. Due to
pointer-to-bool conversion, when `shouldSignReturnAddress` was
incorrectly called with `const MachineFunction *` argument, the latter
overload was used instead of reporting a compile-time error.



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