diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 70736f5cc3..094a67792d 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2017-06-08  Alan Hayward  <alan.hayward@arm.com>
+
+	* mi/mi-main.c (register_changed_p): Use value_contents_eq.
+
 2017-06-08  Alan Hayward  <alan.hayward@arm.com>
 
 	* mi/mi-main.c (register_changed_p): Use cooked_read_value.
diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c
index 38d737f49f..755fbabafb 100644
--- a/gdb/mi/mi-main.c
+++ b/gdb/mi/mi-main.c
@@ -1125,17 +1125,8 @@ register_changed_p (int regnum, struct regcache *prev_regs,
   gdb_assert (prev_value != NULL);
   gdb_assert (this_value != NULL);
 
-  if (value_optimized_out (prev_value) != value_optimized_out (this_value)
-      || value_entirely_available (prev_value)
-	 != value_entirely_available (this_value))
-    ret = 1;
-  if (value_optimized_out (prev_value)
-      || !value_entirely_available (prev_value))
-    ret = 0;
-  else
-    ret = memcmp (value_contents_all (prev_value),
-		  value_contents_all (this_value),
-		  register_size (gdbarch, regnum)) != 0;
+  ret = value_contents_eq (prev_value, 0, this_value, 0,
+			   register_size (gdbarch, regnum)) == 0;
 
   release_value (prev_value);
   release_value (this_value);