expr.c (store_field): When making temp object for unaligned component, set it to alias set 0.

	* expr.c (store_field): When making temp object for unaligned
	component, set it to alias set 0.

From-SVN: r46806

gcc/ChangeLog

+Tue Nov  6 09:21:34 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* expr.c (store_field): When making temp object for unaligned
+	component, set it to alias set 0.
+
 2001-11-06  Joseph S. Myers  <jsm28@cam.ac.uk>
 
 	* c-common.c (c_expand_expr_stmt): Apply default conversions to

gcc/expr.c

@@ -5211,6 +5211,7 @@ store_field (target, bitsize, bitpos, mode, exp, value_mode,
       rtx blk_object = copy_rtx (object);
 
       PUT_MODE (blk_object, BLKmode);
+      set_mem_alias_set (blk_object, 0);
 
       if (bitsize != (HOST_WIDE_INT) GET_MODE_BITSIZE (GET_MODE (target)))
 	emit_move_insn (object, target);