[AArch64 array_mode 6/8] Remove V_TWO_ELEM, again using BLKmode + set_mem_size.

[AArch64 array_mode 6/8] Remove V_TWO_ELEM, again using BLKmode + set_mem_size.

	* config/aarch64/aarch64-simd.md (aarch64_simd_ld2r<mode>):
	Change operand mode from <V_TWO_ELEM> to BLK.
	(aarch64_vec_load_lanesoi_lane<mode>): Likewise.
	(aarch64_vec_store_lanesoi_lane<mode): Likewise
	(aarch64_ld2r<mode>): Generate MEM rtx with BLKmode, call set_mem_size.
	(aarch64_ld2_lane<mode>): Likewise.
	(aarch64_st2_lane<VQ:mode>): Likewise.
	* config/aarch64/iterators.md (V_TWO_ELEM): Remove.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227790 138bc75d-0d04-0410-961f-82ee72b054a4