* gcc-interface/trans.c (gnat_gimplify_expr) <ADDR_EXPR>: Gimplify the
	SAVE_EXPR built for misaligned arguments.  Remove redundant stuff.
	(addressable_p): Return true for more rvalues.

Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r151319