[tree-ssa] Disable must-alias optimization

[Diego Novillo]

This should silence a few C++ regressions introduced by must-alias
optimizations until I can get around to fixing them.


Diego.



	* opts.c (decode_options): Disable must-alias optimization.


Index: opts.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/opts.c,v
retrieving revision 1.31.2.4
diff -d -u -p -r1.31.2.4 opts.c
--- opts.c	25 Jul 2003 17:06:54 -0000	1.31.2.4
+++ opts.c	28 Jul 2003 21:57:17 -0000
@@ -505,7 +505,7 @@ decode_options (unsigned int argc, const
       flag_tree_dce = 1;
       flag_tree_copyprop = 1;
       flag_tree_dom = 1;
-      flag_tree_must_alias = 1;
+      flag_tree_must_alias = 0;
       /* FIXME: Temporary hack to facilitate testing PRE.  */
       if (getenv ("TREE_SSA_DO_PRE"))
 	flag_tree_pre = 1;