re PR target/86805 (sh port needs updating for CVE-2017-5753)

gcc/
2019-09-28  Oleg Endo  <olegendo@gcc.gnu.org>

	PR target/86805
	* config/sh/sh.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define.

From-SVN: r276244

gcc/ChangeLog

 2019-09-28  Oleg Endo  <olegendo@gcc.gnu.org>
 
+	PR target/86805
+	* config/sh/sh.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define.
+
+2019-09-28  Oleg Endo  <olegendo@gcc.gnu.org>
+
 	PR target/80672
 	* config/sh/sh.c (parse_validate_atomic_model_option): Use
 	std::string::compare instead of std::string::find.

gcc/config/sh/sh.c

@@ -661,6 +661,9 @@ static const struct attribute_spec sh_attribute_table[] =
 #undef TARGET_CONSTANT_ALIGNMENT
 #define TARGET_CONSTANT_ALIGNMENT constant_alignment_word_strings
 
+#undef  TARGET_HAVE_SPECULATION_SAFE_VALUE
+#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
+
 struct gcc_target targetm = TARGET_INITIALIZER;