re PR target/86790 (m68k port needs updating for CVE-2017-5753)

	PR target/86790
	* config/m68k/m68k.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
	Define to speculation_safe_value_not_needed.

From-SVN: r263272

gcc/ChangeLog

 2018-08-02  Jeff Law  <law@redhat.com>
 
+	PR target/86790
+	* config/m68k/m68k.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
+	Define to speculation_safe_value_not_needed.
+
 	PR target/86784
 	* config/h8300/h8300.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
 	Define to speculation_safe_value_not_needed.

gcc/config/m68k/m68k.c

@@ -353,6 +353,9 @@ static machine_mode m68k_promote_function_mode (const_tree, machine_mode,
 #undef TARGET_PROMOTE_FUNCTION_MODE
 #define TARGET_PROMOTE_FUNCTION_MODE m68k_promote_function_mode
 
+#undef  TARGET_HAVE_SPECULATION_SAFE_VALUE
+#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
+
 static const struct attribute_spec m68k_attribute_table[] =
 {
   /* { name, min_len, max_len, decl_req, type_req, fn_type_req,