[PATCH] D132385: [AArch64][PAC] Select XPAC for ptrauth.strip intrinsic.

[Ahmed Bougacha via Phabricator via llvm-commits]

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This is mostly straightforward, with an additional optimization: XPACIuntied allows strips of LR (which we emit in `__builtin_return_address`) to avoid clobbering LR.  (This can be useful, e.g., for a certain kind of wrapper functions that just forward the caller address, for logging and such)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132385

Files:
  llvm/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp
  llvm/lib/Target/AArch64/AArch64InstrInfo.td
  llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
  llvm/test/CodeGen/AArch64/ptrauth-intrinsic-strip.ll

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