[llvm] [AArch64][PAC] Select auth+load into LDRAA/LDRAB/LDRA[pre]. (PR #123769)

[Daniil Kovalev via llvm-commits]

================
@@ -1671,6 +1673,163 @@ bool AArch64DAGToDAGISel::tryIndexedLoad(SDNode *N) {
   return true;
 }
 
+bool AArch64DAGToDAGISel::tryAuthLoad(SDNode *N) {
+  LoadSDNode *LD = cast<LoadSDNode>(N);
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kovdan01 wrote:

Nit
```suggestion
  const LoadSDNode *LD = cast<LoadSDNode>(N);
```

https://github.com/llvm/llvm-project/pull/123769