[AArch64]Replace temporary assembler for vld1_dup
* config/aarch64/arm_neon.h (vld1_dup_f32, vld1_dup_f64, vld1_dup_p8,
vld1_dup_p16, vld1_dup_s8, vld1_dup_s16, vld1_dup_s32, vld1_dup_s64,
vld1_dup_u8, vld1_dup_u16, vld1_dup_u32, vld1_dup_u64, vld1q_dup_f32,
vld1q_dup_f64, vld1q_dup_p8, vld1q_dup_p16, vld1q_dup_s8, vld1q_dup_s16,
vld1q_dup_s32, vld1q_dup_s64, vld1q_dup_u8, vld1q_dup_u16,
vld1q_dup_u32, vld1q_dup_u64): Replace inline asm with vdup_n_ and
pointer dereference.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@217705 138bc75d-0d04-0410-961f-82ee72b054a4