Note another case that doesn't work yet.

llvm-svn: 72573

clang/test/CodeGen/volatile-1.c

@@ -82,6 +82,10 @@ int main() {
   // ============================================================
   // Test cases we get wrong.
 
+  // A use.  We load all of a into a copy of a, then load i.  gcc forgets to do
+  // the assignment.
+  (a = a).i;
+
   // ============================================================
   // Test cases where we intentionally differ from gcc, due to suspected bugs in
   // gcc.