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

1 files changed, 1 insertions, 0 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index 2652781..0cbd8fd 100644
--- a/gcc/expr.c
+++ b/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);