diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h
index 056162fbb1b..fe649dda972 100644
--- a/gcc/tree-flow.h
+++ b/gcc/tree-flow.h
@@ -418,11 +418,6 @@ struct static_var_ann_d GTY(())
 struct function_ann_d GTY(())
 {
   struct tree_ann_common_d common;
-
-  /* Pointer to the structure that contains the sets of global
-     variables modified by function calls.  This field is only used
-     for FUNCTION_DECLs.  */
-  ipa_reference_vars_info_t GTY ((skip)) reference_vars_info;
 };