The following neon instructions are currently not implemented in stdarch

Not implemented on arm:

vcadd_rot270_f32

vcadd_rot90_f32

vcaddq_rot270_f32

vcaddq_rot90_f32

vdot_s32

vdot_u32

vdotq_s32

vdotq_u32

vdot_lane_s32

vdot_lane_u32

vdotq_lane_s32

vdotq_lane_u32

vcmla_f32

vcmla_lane_f32

vcmla_laneq_f32

vcmla_rot180_f32

vcmla_rot180_lane_f32

vcmla_rot180_laneq_f32

vcmla_rot270_f32

vcmla_rot270_lane_f32

vcmla_rot270_laneq_f32

vcmla_rot90_f32

vcmla_rot90_lane_f32

vcmla_rot90_laneq_f32

vcmlaq_f32

vcmlaq_lane_f32

vcmlaq_laneq_f32

vcmlaq_rot180_f32

vcmlaq_rot180_lane_f32

vcmlaq_rot180_laneq_f32

vcmlaq_rot270_f32

vcmlaq_rot270_lane_f32

vcmlaq_rot270_laneq_f32

vcmlaq_rot90_f32

vcmlaq_rot90_lane_f32

vcmlaq_rot90_laneq_f32

Not implemented in LLVM:

vrnd32x_f64

vrnd32xq_f64

vrnd32z_f64

vrnd32zq_f64

vrnd64x_f64

vrnd64xq_f64

vrnd64z_f64

vrnd64zq_f64

LLVM Select errors may occur:

vsudot_lane_s32

vsudot_laneq_s32

vsudotq_lane_s32

vsudotq_laneq_s32

vusdot_lane_s32

vusdot_laneq_s32

vusdot_s32

vusdotq_lane_s32

vusdotq_laneq_s32

vusdotq_s32v