[llvm-branch-commits] [llvm] [AArch64][PAC] Lower authenticated calls with ptrauth bundles. (PR #85736)

[Daniil Kovalev via llvm-branch-commits]

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@@ -2642,6 +2642,20 @@ bool IRTranslator::translateCallBase(const CallBase &CB,
     }
   }
 
+  std::optional<CallLowering::PointerAuthInfo> PAI;
+  if (CB.countOperandBundlesOfType(LLVMContext::OB_ptrauth)) {
+    // Functions should never be ptrauth-called directly.
+    assert(!CB.getCalledFunction() && "invalid direct ptrauth call");
+
+    auto PAB = CB.getOperandBundle("ptrauth");
+    Value *Key = PAB->Inputs[0];
+    Value *Discriminator = PAB->Inputs[1];
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kovdan01 wrote:

```suggestion
    const Value *Discriminator = PAB->Inputs[1];
```

https://github.com/llvm/llvm-project/pull/85736