2010-04-01  Richard Guenther  <rguenther@suse.de>

	PR middle-end/43614
	* tree-ssa-address.c (copy_mem_ref_info): Copy TREE_SIDE_EFFECTS
	and TREE_THIS_VOLATILE.
	(copy_ref_info): Likewise.
	* tree-ssa-operands.c (get_tmr_operands): Check TREE_THIS_VOLATILE.
	* tree.c (build6_stat): Ignore side-effects of all but arg5
	for TARGET_MEM_REF.  Set TREE_THIS_VOLATILE from arg5 of
	TARGET_MEM_REF.

	* gcc.c-torture/compile/pr43614.c: New testcase.

From-SVN: r157913