================
@@ -4608,6 +4614,38 @@ bool AArch64DAGToDAGISel::SelectCMP_SWAP(SDNode *N) {
return true;
}
+AArch64AtomicStoreHint
+AArch64DAGToDAGISel::decodeAtomicHintFlags(MachineMemOperand *MMO) const {
+ int AtomicHint = -1;
+ const MDNode *MemCacheHint = MMO->getMemCacheHint();
+ if (!MemCacheHint)
+ return AArch64AtomicStoreHint::HINT_NONE;
+
+ for (unsigned I = 0; I + 1 < MemCacheHint->getNumOperands(); I += 2) {
+ const auto *Key = cast<MDString>(MemCacheHint->getOperand(I));
+ StringRef KeyStr = Key->getString();
+ const Metadata *Val = MemCacheHint->getOperand(I + 1).get();
+
+ if (KeyStr != "aarch64.atomic_hint")
+ continue;
+
+ AtomicHint = cast<ConstantInt>(cast<ConstantAsMetadata>(Val)->getValue())
+ ->getZExtValue();
----------------
Lukacma wrote:
```suggestion
if ((MemCacheHint->getOperand(I)).equalsStr("aarch64.atomic_hint")){
const Metadata *Val = MemCacheHint->getOperand(I + 1).get();
AtomicHint = cast<ConstantInt>(cast<ConstantAsMetadata>(Val)->getValue())
->getZExtValue();
}
```
Maybe rewriting it like this will be neater.
https://github.com/llvm/llvm-project/pull/198316
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