Revert r86315 and add Type::FixedWidthInt to the FIXME cases.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86320 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 1a8d643..e2da399 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -854,8 +854,10 @@
   // FIXME: Handle these.
   case Type::ExtVector:
   case Type::Vector:
+  case Type::FixedWidthInt:
     return llvm::DIType();
   default:
+    assert(false && "Unhandled type class!");
     return llvm::DIType();
   case Type::ObjCObjectPointer:
     return CreateType(cast<ObjCObjectPointerType>(Ty), Unit);