Do not bother to emit debug info for nameless global variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86259 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 6b54e61..de8cfc6 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1098,8 +1098,8 @@
 DIE *DwarfDebug::CreateGlobalVariableDIE(CompileUnit *DW_Unit,
                                          const DIGlobalVariable &GV) {
   // If the global variable was optmized out then no need to create debug info entry.
-  if (!GV.getGlobal())
-    return NULL;
+  if (!GV.getGlobal()) return NULL;
+  if (!GV.getDisplayName()) return NULL;
 
   DIE *GVDie = new DIE(dwarf::DW_TAG_variable);
   AddString(GVDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,