Reorder the DIFile parameter in DINameSpace

Moving the DIFile parameter to immediately proceed the tag so that it will be a
common prefix with other DIScopes (once the DIFile is replaced with the raw
file/directory pair).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177492 91177308-0d34-0410-b5e6-96231b3b80d8

lib/IR/DIBuilder.cpp

@@ -975,9 +975,9 @@ DINameSpace DIBuilder::createNameSpace(DIDescriptor Scope, StringRef Name,
                                        DIFile File, unsigned LineNo) {
   Value *Elts[] = {
     GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
+    File,
     getNonCompileUnitScope(Scope),
     MDString::get(VMContext, Name),
-    File,
     ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
   };
   DINameSpace R(MDNode::get(VMContext, Elts));