[clang] [llvm] [AArch64] Implement the atomic store with hint intrinsic (PR #198316)

[via cfe-commits]

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@@ -8028,6 +8092,23 @@ void AArch64InstructionSelector::renderFPImm32SIMDModImmType4(
                                                       .getZExtValue()));
 }
 
+bool AArch64InstructionSelector::isAtomicHintInst(
+    const MachineInstr &MI, AArch64AtomicStoreHint Hint) const {
+  const GStore &St = cast<GStore>(MI);
+  auto MMO = St.getMMO();
----------------
Lukacma wrote:

Nit
```suggestion
    auto MMO = cast<GStore>(I).getMMO();
```

https://github.com/llvm/llvm-project/pull/198316