opts.c (decode_options): If optimize is bigger than 255, set it to 255.

	* opts.c (decode_options): If optimize is bigger than 255,
	set it to 255.

	* gcc.dg/O16384.c: New test.

From-SVN: r154699

gcc/ChangeLog

+2009-11-27  Jakub Jelinek  <jakub@redhat.com>
+
+	* opts.c (decode_options): If optimize is bigger than 255,
+	set it to 255.
+
 2009-11-26  Richard Henderson  <rth@redhat.com>
 
 	* config/i386/sse.md (mulv16qi3): Change back from an expander

gcc/opts.c

@@ -829,6 +829,8 @@ decode_options (unsigned int argc, const char **argv)
 	      if (optimize_val != -1)
 		{
 		  optimize = optimize_val;
+		  if ((unsigned int) optimize > 255)
+		    optimize = 255;
 		  optimize_size = 0;
 		}
 	    }

gcc/testsuite/ChangeLog

+2009-11-27  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/O16384.c: New test.
+
 2009-11-27  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/35112

gcc/testsuite/gcc.dg/O16384.c

+/* Test insane -O argument.  */
+/* { dg-do compile } */
+/* { dg-options "-O16384" } */
+
+__attribute__((__optimize__(16396), __noinline__)) void
+foo (void)
+{
+}
+
+int
+main (void)
+{
+  foo ();
+  return 0;
+}