re PR tree-optimization/34391 (Vectorizer does not fix up alias information correctly)

2007-12-08  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/34391
	* tree-vect-transform.c (vect_setup_realignment): Mark new
	symbols for renaming.

From-SVN: r130707

gcc/ChangeLog

+2007-12-08  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/34391
+	* tree-vect-transform.c (vect_setup_realignment): Mark new
+	symbols for renaming.
+
 2007-12-07  Bob Wilson  <bob.wilson@acm.org>
 	
 	* config/xtensa/xtensa.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.

gcc/tree-vect-transform.c

@@ -5143,6 +5143,7 @@ vect_setup_realignment (tree stmt, block_stmt_iterator *bsi,
       new_stmt = build_gimple_modify_stmt (vec_dest, data_ref);
       new_temp = make_ssa_name (vec_dest, new_stmt);
       GIMPLE_STMT_OPERAND (new_stmt, 0) = new_temp;
+      mark_symbols_for_renaming (new_stmt);
       new_bb = bsi_insert_on_edge_immediate (pe, new_stmt);
       gcc_assert (!new_bb);
       msq_init = GIMPLE_STMT_OPERAND (new_stmt, 0);