There is no need to add file as context for subroutine type. The subroutine type does not need any context.

llvm-svn: 138010
diff --git a/llvm/lib/Analysis/DIBuilder.cpp b/llvm/lib/Analysis/DIBuilder.cpp
index 55f6fca..450412f 100644
--- a/llvm/lib/Analysis/DIBuilder.cpp
+++ b/llvm/lib/Analysis/DIBuilder.cpp
@@ -434,9 +434,9 @@
   // TAG_subroutine_type is encoded in DICompositeType format.
   Value *Elts[] = {
     GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
-    getNonCompileUnitScope(File),
+    llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
     MDString::get(VMContext, ""),
-    File,
+    llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
     ConstantInt::get(Type::getInt32Ty(VMContext), 0),
     ConstantInt::get(Type::getInt64Ty(VMContext), 0),
     ConstantInt::get(Type::getInt64Ty(VMContext), 0),