Revert "[DebugInfo] Do not generate address info for removed debug labels."

The added test is failing on macOS:

  http://green.lab.llvm.org/green/job/clang-stage1-cmake-RA-incremental/53550/

This reverts r342943.

llvm-svn: 342993

Author: bogner

llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp

@@ -865,9 +865,10 @@ void DwarfCompileUnit::finishEntityDefinition(const DbgEntity *Entity) {
       llvm_unreachable("DbgEntity must be DbgVariable or DbgLabel.");
   }
 
-  if (Label)
-    if (const auto *Sym = Label->getSymbol())
-      addLabelAddress(*Die, dwarf::DW_AT_low_pc, Sym);
+  if (Label) {
+    const MCSymbol *Sym = Label->getSymbol();
+    addLabelAddress(*Die, dwarf::DW_AT_low_pc, Sym);
+  }
 }
 
 DbgEntity *DwarfCompileUnit::getExistingAbstractEntity(const DINode *Node) {