Mips: Don't create a dangling IR function just to get the address of a symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146340 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 4bd3d8a..4df84ee 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1553,12 +1553,7 @@
     unsigned PtrSize = PtrVT.getSizeInBits();
     IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize);
 
-    SmallVector<Type*, 1> Params;
-    Params.push_back(PtrTy);
-    FunctionType *FuncTy = FunctionType::get(PtrTy, Params, false);
-    Function *Func = Function::Create(FuncTy, GlobalValue::ExternalLinkage,
-                                      "__tls_get_addr");
-    SDValue TlsGetAddr = DAG.getGlobalAddress(Func, dl, PtrVT);
+    SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT);
 
     ArgListTy Args;
     ArgListEntry Entry;