aarch64.c: tweaks to quoting in error messages (PR target/79925)

gcc/ChangeLog:
	PR target/79925
	* config/aarch64/aarch64.c (aarch64_validate_mcpu): Quote the
	full command-line argument, rather than just "str".
	(aarch64_validate_march): Likewise.
	(aarch64_validate_mtune): Likewise.

From-SVN: r246066

gcc/ChangeLog

+2017-03-10  David Malcolm  <dmalcolm@redhat.com>
+
+	PR target/79925
+	* config/aarch64/aarch64.c (aarch64_validate_mcpu): Quote the
+	full command-line argument, rather than just "str".
+	(aarch64_validate_march): Likewise.
+	(aarch64_validate_mtune): Likewise.
+
 2017-03-10  Bernd Schmidt  <bschmidt@redhat.com>
 
 	PR rtl-optimization/78911

gcc/config/aarch64/aarch64.c

@@ -8748,14 +8748,14 @@ aarch64_validate_mcpu (const char *str, const struct processor **res,
   switch (parse_res)
     {
       case AARCH64_PARSE_MISSING_ARG:
-	error ("missing cpu name in -mcpu=%qs", str);
+	error ("missing cpu name in %<-mcpu=%s%>", str);
 	break;
       case AARCH64_PARSE_INVALID_ARG:
 	error ("unknown value %qs for -mcpu", str);
 	aarch64_print_hint_for_core (str);
 	break;
       case AARCH64_PARSE_INVALID_FEATURE:
-	error ("invalid feature modifier in -mcpu=%qs", str);
+	error ("invalid feature modifier in %<-mcpu=%s%>", str);
 	break;
       default:
 	gcc_unreachable ();
@@ -8782,14 +8782,14 @@ aarch64_validate_march (const char *str, const struct processor **res,
   switch (parse_res)
     {
       case AARCH64_PARSE_MISSING_ARG:
-	error ("missing arch name in -march=%qs", str);
+	error ("missing arch name in %<-march=%s%>", str);
 	break;
       case AARCH64_PARSE_INVALID_ARG:
 	error ("unknown value %qs for -march", str);
 	aarch64_print_hint_for_arch (str);
 	break;
       case AARCH64_PARSE_INVALID_FEATURE:
-	error ("invalid feature modifier in -march=%qs", str);
+	error ("invalid feature modifier in %<-march=%s%>", str);
 	break;
       default:
 	gcc_unreachable ();
@@ -8815,7 +8815,7 @@ aarch64_validate_mtune (const char *str, const struct processor **res)
   switch (parse_res)
     {
       case AARCH64_PARSE_MISSING_ARG:
-	error ("missing cpu name in -mtune=%qs", str);
+	error ("missing cpu name in %<-mtune=%s%>", str);
 	break;
       case AARCH64_PARSE_INVALID_ARG:
 	error ("unknown value %qs for -mtune", str);