[llvm] [aarch64] XOR the frame pointer with the stack cookie when protecting the stack (PR #161114)

[Pan Tao via llvm-commits]

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@@ -2276,6 +2276,15 @@ bool AArch64InstrInfo::expandPostRAPseudo(MachineInstr &MI) const {
           .addMemOperand(*MI.memoperands_begin());
     }
   }
+  // To match MSVC
+  if (Subtarget.getTargetTriple().isOSMSVCRT() &&
+      !Subtarget.getTargetLowering()
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PanTao2 wrote:

Thank you for pointing out the difference! I removed the isTargetMachO() check in AArch64TargetLowering::useStackGuardXorFP.

https://github.com/llvm/llvm-project/pull/161114