Add FIXME.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63531 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index 7fc3176..c08b93b 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -482,6 +482,10 @@
                              ASTContext &Context,
                              uint64_t OffsetBase,
                              Class &Lo, Class &Hi) const {
+  // FIXME: This code can be simplified by introducing a simple value
+  // class for Class pairs with appropriate constructor methods for
+  // the various situations.
+
   Lo = Hi = NoClass;
 
   Class &Current = OffsetBase < 64 ? Lo : Hi;