1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/lists.c b/gcc/lists.c
index 6e631edc1a3..174a39f5eb2 100644
--- a/gcc/lists.c
+++ b/gcc/lists.c
@@ -213,3 +213,11 @@ remove_free_EXPR_LIST_node (rtx *listp)
 
   return elem;
 }
+
+/* Discards the cache lists once the RTXes in them are freed.  */
+void
+discard_rtx_lists (void)
+{
+  unused_insn_list = NULL;
+  unused_expr_list = NULL;
+}