================
@@ -3369,6 +3369,48 @@ SDValue
PPCTargetLowering::LowerGlobalTLSAddressAIX(SDValue Op,
bool Is64Bit = Subtarget.isPPC64();
bool HasAIXSmallLocalExecTLS = Subtarget.hasAIXSmallLocalExecTLS();
TLSModel::Model Model = getTargetMachine().getTLSModel(GV);
+ // Initialize heuristic setting lazily:
+ // (1) Use initial-exec for single TLS var reference within current function.
+ // (2) Use local-dynamic for multiple TLS var references within current func.
+ PPCFunctionInfo *FuncInfo =
+ DAG.getMachineFunction().getInfo<PPCFunctionInfo>();
+ if (Subtarget.hasAIXShLibTLSModelHeuristic() &&
+ !FuncInfo->isAIXFuncUseInitDone()) {
+ std::set<const GlobalValue *> TLSGV;
----------------
bzEq wrote:
```suggestion
SmallPtrSet<const GlobalValue *, 8> TLSGV;
```
https://github.com/llvm/llvm-project/pull/84132
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