re PR tree-optimization/38745 (ICE: statement makes a memory store, but has no VDEFS)

2009-01-26  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/38745
	* tree-ssa-alias.c (update_alias_info_1): Exclude RESULT_DECL
	from special handling.

From-SVN: r143676

gcc/ChangeLog

 2009-01-26  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/38745
+	* tree-ssa-alias.c (update_alias_info_1): Exclude RESULT_DECL
+	from special handling.
+
+2009-01-26  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/38745
 	* tree-ssa.c (execute_update_addresses_taken): Do not include
 	variables that cannot possibly be a register in not_reg_needs.
 	Do not clear TREE_ADDRESSABLE on vars that may not become

gcc/tree-ssa-alias.c

@@ -2494,6 +2494,8 @@ update_alias_info_1 (gimple stmt, struct alias_info *ai)
 	{
 	  tree var = get_base_address (lhs);
 	  if (DECL_P (var)
+	      /* We are not going to mess with RESULT_DECL anyway.  */
+	      && TREE_CODE (var) != RESULT_DECL
 	      && is_gimple_reg_type (TREE_TYPE (var)))
 	    bitmap_set_bit (gimple_addressable_vars (cfun), DECL_UID (var));
 	}