Revert "Debug info: (bugfix) C++ C/Dtors can be compiled to multiple functions,"

This reverts commit 206096 while I investigate why this broke the gdb
buildbot.

llvm-svn: 206103
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index ccecb5b..c1f0538 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -1469,25 +1469,20 @@
   // Add function template parameters.
   addTemplateParams(*SPDie, SP.getTemplateParams());
 
-  if (DeclDie)
+  // If this DIE is going to refer declaration info using AT_specification
+  // then there is no need to add other attributes.
+  if (DeclDie) {
     // Refer function declaration directly.
     addDIEEntry(SPDie, dwarf::DW_AT_specification, DeclDie);
 
-  // Add the linkage name if we have one and it isn't in the Decl.
-  StringRef LinkageName = SP.getLinkageName();
-  if (!LinkageName.empty()) {
-    if (SPDecl.isSubprogram() && !SPDecl.getLinkageName().empty())
-      assert(SPDecl.getLinkageName() == SP.getLinkageName() &&
-             "decl has a linkage name and it is different");
-    else
-      addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
-                GlobalValue::getRealLinkageName(LinkageName));
+    return SPDie;
   }
 
-  // If this DIE is going to refer declaration info using AT_specification
-  // then there is no need to add other attributes.
-  if (DeclDie)
-    return SPDie;
+  // Add the linkage name if we have one.
+  StringRef LinkageName = SP.getLinkageName();
+  if (!LinkageName.empty())
+    addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
+              GlobalValue::getRealLinkageName(LinkageName));
 
   // Constructors and operators for anonymous aggregates do not have names.
   if (!SP.getName().empty())