re PR target/80672 (gcc/config/sh/sh.c:716: prefer compare to find.)

gcc/
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.

From-SVN: r276240

gcc/ChangeLog

+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.
+
 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 
 	* configure: Regenerate.

gcc/config/sh/sh.c

@@ -734,7 +734,7 @@ got_mode_name:;
     {
       if (tokens[i] == "strict")
 	ret.strict = true;
-      else if (tokens[i].find ("gbr-offset=") == 0)
+      else if (!tokens[i].compare (0, strlen ("gbr-offset="), "gbr-offset="))
 	{
 	  std::string offset_str = tokens[i].substr (strlen ("gbr-offset="));
 	  ret.tcb_gbr_offset = integral_argument (offset_str.c_str ());