re PR target/62040 (internal compiler error: in simplify_const_unary_operation, at simplify-rtx.c:1555)

	PR target/62040
	* config/aarch64/iterators.md (VQ_NO2E, VQ_2E): New iterators.
	* config/aarch64/aarch64-simd.md (move_lo_quad_internal_<mode>): Split
	it into two patterns.
	(move_lo_quad_internal_be_<mode>): Likewise.
	
	* gcc.target/aarch64/pr62040.c: New test.

From-SVN: r214905