[llvm] [BOLT][AArch64] Support for pointer authentication (PR #117578)

[Paschalis Mpeis via llvm-commits]

================
@@ -201,7 +201,11 @@ int32_t BinaryBasicBlock::getCFIStateAtInstr(const MCInst *Instr) const {
       InstrSeen = (&Inst == Instr);
       continue;
     }
-    if (Function->getBinaryContext().MIB->isCFI(Inst)) {
+    // Fix: ignoring OpNegateRAState CFIs here, as they dont have a "State"
----------------
paschalis-mpeis wrote:

Is this handled later on? Can you reword your comment to something like
```
// Ignoring (all the cases here..). ABC will handle Negate-RA case?
```

https://github.com/llvm/llvm-project/pull/117578