PR tree-optimization/33723
	* c-gimplify.c (c_gimplify_expr): Optimize INIT_EXPR or
	MODIFY_EXPR with non-addressable COMPOUND_LITERAL_EXPR as source.

	* gcc.c-torture/execute/20071029-1.c: New test.
	* gcc.dg/tree-ssa/pr33723.c: New test.

From-SVN: r129743