[llvm] [TargetLowering] Fix the problem of emulated-TLS implementation witho… (PR #101490)

[via llvm-commits]

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@@ -10225,8 +10225,10 @@ SDValue TargetLowering::LowerToTLSEmulatedModel(const GlobalAddressSDNode *GA,
 
   ArgListTy Args;
   ArgListEntry Entry;
-  std::string NameString = ("__emutls_v." + GA->getGlobal()->getName()).str();
-  Module *VariableModule = const_cast<Module*>(GA->getGlobal()->getParent());
+  const GlobalValue *GV = GA->getGlobal();
+  GV = GV->getAliaseeObject() ? GV->getAliaseeObject() : GV;
+  std::string NameString = ("__emutls_v." + GV->getName()).str();
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wuxie2022 wrote:

The original code used 'NameString'. And the lenth of rvalue at line 10230 is indeterminate. So I don't think it's a good idea to use 'SmallString'.

https://github.com/llvm/llvm-project/pull/101490