s390.c (s390_handle_arch_option): Set type and flags to defined values in case of an error.

2010-11-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* config/s390/s390.c (s390_handle_arch_option): Set type and flags
	to defined values in case of an error.
	(s390_option_override): Skip further processing if the -march
	parameter wasn't recognized.

From-SVN: r166435

gcc/ChangeLog

+2010-11-08  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
+
+	* config/s390/s390.c (s390_handle_arch_option): Set type and flags
+	to defined values in case of an error.
+	(s390_option_override): Skip further processing if the -march
+	parameter wasn't recognized.
+
 2010-11-08  Joern Rennecke  <amylaar@spamcop.net>
 
 	* caller-save.c (reg_save_code): After HARD_REGNO_MODE_OK check fails,

gcc/config/s390/s390.c

@@ -1554,6 +1554,9 @@ s390_handle_arch_option (const char *arg,
 	*flags = processor_alias_table[i].flags;
 	return true;
       }
+
+  *type = PROCESSOR_max;
+  *flags = 0;
   return false;
 }
 
@@ -1614,6 +1617,12 @@ s390_option_override (void)
       s390_handle_arch_option (s390_arch_string, &s390_arch, &s390_arch_flags);
     }
 
+  /* This check is triggered when the user specified a wrong -march=
+     string and prevents subsequent error messages from being
+     issued.  */
+  if (s390_arch == PROCESSOR_max)
+    return;
+
   /* Determine processor to tune for.  */
   if (s390_tune == PROCESSOR_max)
     {