[llvm] [PAC][CodeGen][ELF][AArch64] Support signed TLSDESC (PR #113813)

[Anatoly Trosinenko via llvm-commits]

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@@ -9996,7 +10000,13 @@ AArch64TargetLowering::LowerELFGlobalTLSAddress(SDValue Op,
 
   const GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
 
-  TLSModel::Model Model = getTargetMachine().getTLSModel(GA->getGlobal());
+  TLSModel::Model Model;
+  if (DAG.getMachineFunction()
+          .getInfo<AArch64FunctionInfo>()
+          ->hasELFSignedGOT())
+    Model = TLSModel::GeneralDynamic;
+  else
+    Model = getTargetMachine().getTLSModel(GA->getGlobal());
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atrosinenko wrote:

Initially, I assumed this would make it possible to use ternary operator as initializer, though it is completely up to you.

https://github.com/llvm/llvm-project/pull/113813