diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 63eed378b15..db70fed01bc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/54792
+	* sched-deps.c (find_modifiable_mems): Scan also TAIL insn.
+
 2012-10-02  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/54785
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index 6625a53a699..936a1317bb7 100644
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -4816,10 +4816,10 @@ find_mem (struct mem_inc_info *mii, rtx *address_of_x)
 void
 find_modifiable_mems (rtx head, rtx tail)
 {
-  rtx insn;
+  rtx insn, next_tail = NEXT_INSN (tail);
   int success_in_block = 0;
 
-  for (insn = head; insn != tail; insn = NEXT_INSN (insn))
+  for (insn = head; insn != next_tail; insn = NEXT_INSN (insn))
     {
       struct mem_inc_info mii;