Add debug prints
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index 672e384..ef514ed 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -3202,6 +3202,10 @@
 	  else if (TREE_CODE (op) == SSA_NAME
 		   && TYPE_SIZE (TREE_TYPE (expr)) != TYPE_SIZE (TREE_TYPE (op)))
 	    {
+                debug_tree(expr);
+                printf("*** %ld\n", tree_to_shwi(TYPE_SIZE (TREE_TYPE (expr))));
+                debug_tree(op);
+                printf("**** %ld\n", tree_to_shwi(TYPE_SIZE (TREE_TYPE (op))));
 	      error ("conversion of register to a different size in %qs",
 		     code_name);
 	      debug_generic_stmt (expr);