tree-ssa-operands.c (add_stmt_operand): Use V_MUST_DEF even for variables being alias set.

	* tree-ssa-operands.c (add_stmt_operand): Use V_MUST_DEF even for
	variables being alias set.

From-SVN: r87193

gcc/ChangeLog

+2004-09-08  Jan Hubicka  <jh@suse.cz>
+
+	* tree-ssa-operands.c (add_stmt_operand): Use V_MUST_DEF even for
+	variables being alias set.
+
 2004-09-08  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* final.c (shorten_branches, final, get_insn_template,

gcc/tree-ssa-operands.c

@@ -1487,16 +1487,7 @@ add_stmt_operand (tree *var_p, tree stmt, int flags)
 	  /* The variable is not aliased or it is an alias tag.  */
 	  if (flags & opf_is_def)
 	    {
-	      if (v_ann->is_alias_tag)
-	        {
-		  /* Alias tagged vars get V_MAY_DEF to avoid breaking
-		     def-def chains with the other variables in their
-		     alias sets.  */
-		  if (s_ann)
-		    s_ann->makes_aliased_stores = 1;
-		  append_v_may_def (var);
-		}
-	      else if (flags & opf_kill_def)
+	      if (flags & opf_kill_def)
 		{
 #if defined ENABLE_CHECKING
 		  /* Only regular variables may get a V_MUST_DEF