diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index fde684f..ee65e74 100644
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -2691,7 +2691,12 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx insn)
 	/* Always add these dependencies to pending_reads, since
 	   this insn may be followed by a write.  */
         if (!deps->readonly)
-          add_insn_mem_dependence (deps, true, insn, x);
+          {
+	    if ((deps->pending_read_list_length + deps->pending_write_list_length) 
+                   > MAX_PENDING_LIST_LENGTH)
+                 flush_pending_lists (deps, insn, true, true);
+            add_insn_mem_dependence (deps, true, insn, x);
+        }
 
 	sched_analyze_2 (deps, XEXP (x, 0), insn);