[AArch64] Extend aarch64_simd_vec_set pattern, replace asm for vld1_lane

[AArch64] Extend aarch64_simd_vec_set pattern, replace asm for vld1_lane

gcc/:

	* config/aarch64/aarch64-simd.md (aarch64_simd_vec_set<mode>): Add
	variant reading from memory and assembling to ld1.

	* config/aarch64/arm_neon.h (vld1_lane_f32, vld1_lane_f64, vld1_lane_p8,
	vld1_lane_p16, vld1_lane_s8, vld1_lane_s16, vld1_lane_s32,
	vld1_lane_s64, vld1_lane_u8, vld1_lane_u16, vld1_lane_u32,
	vld1_lane_u64, vld1q_lane_f32, vld1q_lane_f64, vld1q_lane_p8,
	vld1q_lane_p16, vld1q_lane_s8, vld1q_lane_s16, vld1q_lane_s32,
	vld1q_lane_s64, vld1q_lane_u8, vld1q_lane_u16, vld1q_lane_u32,
	vld1q_lane_u64): Replace asm with vset_lane and pointer dereference.

gcc/testsuite/:

	* gcc.target/aarch64/vld1_lane.c: New test.

From-SVN: r217665