[DebugInfo]: Remove dangerous dead function (-Wreturn-stack-address)

Signed-off-by: Itay Bookstein <[email protected]>

Author: nextsilicon-itay-bookstein

llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h

@@ -178,14 +178,6 @@ class DwarfCompileUnit final : public DwarfUnit {
 
   std::vector<BaseTypeRef> ExprRefedBaseTypes;
 
-private:
-  DenseMap<DIGlobalVariable *, SmallVector<GlobalExpr, 1>> *globalVarMap;
-public:
-  void setGlobalVarMap(
-      DenseMap<DIGlobalVariable *, SmallVector<GlobalExpr, 1>> *p = nullptr) {
-    globalVarMap = p;
-  }
-
   /// Get or create global variable DIE.
   DIE *
   getOrCreateGlobalVariableDIE(const DIGlobalVariable *GV,

llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

@@ -1209,17 +1209,11 @@ void DwarfDebug::beginModule(Module *M) {
     }
 
     DenseSet<DIGlobalVariable *> Processed;
-#if 0
-    CU.setGlobalVarMap(&GVMap);
-#endif
     for (auto *GVE : CUNode->getGlobalVariables()) {
       DIGlobalVariable *GV = GVE->getVariable();
       if (Processed.insert(GV).second)
         CU.getOrCreateGlobalVariableDIE(GV, sortGlobalExprs(GVMap[GV]));
     }
-#if 0
-    CU.setGlobalVarMap();
-#endif
 
     for (auto *Ty : CUNode->getEnumTypes())
       CU.getOrCreateTypeDIE(cast<DIType>(Ty));