toplev.c (main): Enable -fstrict-aliasing for -O2 and above.

        * toplev.c (main): Enable -fstrict-aliasing for -O2 and above.
        * invoke.texi: Corresponding changes.

From-SVN: r21777

gcc/ChangeLog

+Mon Aug 17 09:15:47 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* toplev.c (main): Enable -fstrict-aliasing for -O2 and above.
+	* invoke.texi: Corresponding changes.
+
 Mon Aug 17 02:03:55 1998  Richard Henderson  <rth@cygnus.com>
 
 	* regclass.c (allocate_reg_info): Respect MIN when clearing data.

gcc/invoke.texi

@@ -2494,10 +2494,6 @@ int f() @{
 @}
 @end example
 
-This option is not enabled by default at any optimization level because
-it is new and has yet to be subjected to thorough testing.  You may
-of course enable it manually with @samp{-fstrict-aliasing}.
-
 @ifset INTERNALS
 Every language that wishes to perform language-specific alias analysis
 should define a function that computes, given an @code{tree}

gcc/toplev.c

@@ -4290,9 +4290,7 @@ main (argc, argv, envp)
       flag_schedule_insns_after_reload = 1;
 #endif
       flag_regmove = 1;
-      /* We don't set flag_strict_aliasing here because we're still
-	 testing the functionality.  After it has been tested, it
-	 should be turned on here.  */
+      flag_strict_aliasing = 1;
     }
 
   if (optimize >= 3)