text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-vmul/neon.c.in
  //   Generator: tools/xngen
  //
  // Copyright 2021 Google LLC
  //
  // This source code is licensed under the BSD-style license found in the
  // LICENSE file in the root directory of this source tree.
  
  #include <assert.h>
  
  #include <arm_neon.h>
  
  #include <xnnpack/vmul.h>
  
  
  void xnn_qu8_vmul_minmax_fp32_ukernel__neon_ld64_x16(
      size_t n,
      const uint8_t* input_a,
      const uint8_t* input_b,
      uint8_t* output,
      const union xnn_qu8_mul_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
  {
    const uint8x8_t va_zero_point = vld1_dup_u8(params->fp32_neon.a_zero_point);
    const uint8x8_t vb_zero_point = vld1_dup_u8(params->fp32_neon.b_zero_point);
    const float32x4_t vscale = vld1q_dup_f32(&params->fp32_neon.scale);
    const float32x4_t vmagic_bias = vld1q_dup_f32(&params->fp32_neon.magic_bias);
    const int32x4_t vmagic_bias_less_output_zero_point = vld1q_dup_s32(&params->fp32_neon.magic_bias_less_output_zero_point);
    const uint8x16_t voutput_min = vld1q_dup_u8(&params->fp32_neon.output_min);
    const uint8x16_t voutput_max = vld1q_dup_u8(&params->fp32_neon.output_max);
  
    for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) {
      const uint8x8_t va01234567 = vld1_u8(input_a); input_a += 8;
      const uint8x8_t vb01234567 = vld1_u8(input_b); input_b += 8;
      const uint8x8_t va89ABCDEF = vld1_u8(input_a); input_a += 8;
      const uint8x8_t vb89ABCDEF = vld1_u8(input_b); input_b += 8;
  
      const int16x8_t vxa01234567 = vreinterpretq_s16_u16(vsubl_u8(va01234567, va_zero_point));
      const int16x8_t vxb01234567 = vreinterpretq_s16_u16(vsubl_u8(vb01234567, vb_zero_point));
      const int16x8_t vxa89ABCDEF = vreinterpretq_s16_u16(vsubl_u8(va89ABCDEF, va_zero_point));
      const int16x8_t vxb89ABCDEF = vreinterpretq_s16_u16(vsubl_u8(vb89ABCDEF, vb_zero_point));
  
      int32x4_t vacc0123 = vmull_s16(vget_low_s16(vxa01234567), vget_low_s16(vxb01234567));
      int32x4_t vacc4567 = vmull_s16(vget_high_s16(vxa01234567), vget_high_s16(vxb01234567));
      int32x4_t vacc89AB = vmull_s16(vget_low_s16(vxa89ABCDEF), vget_low_s16(vxb89ABCDEF));
      int32x4_t vaccCDEF = vmull_s16(vget_high_s16(vxa89ABCDEF), vget_high_s16(vxb89ABCDEF));
  
      float32x4_t vfpacc0123 = vcvtq_f32_s32(vacc0123);
      float32x4_t vfpacc4567 = vcvtq_f32_s32(vacc4567);
      float32x4_t vfpacc89AB = vcvtq_f32_s32(vacc89AB);
      float32x4_t vfpaccCDEF = vcvtq_f32_s32(vaccCDEF);
  
      vfpacc0123 = vmulq_f32(vfpacc0123, vscale);
      vfpacc4567 = vmulq_f32(vfpacc4567, vscale);
      vfpacc89AB = vmulq_f32(vfpacc89AB, vscale);
      vfpaccCDEF = vmulq_f32(vfpaccCDEF, vscale);
  
      vacc0123 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0123, vmagic_bias));
      vacc4567 = vreinterpretq_s32_f32(vaddq_f32(vfpacc4567, vmagic_bias));
      vacc89AB = vreinterpretq_s32_f32(vaddq_f32(vfpacc89AB, vmagic_bias));
      vaccCDEF = vreinterpretq_s32_f32(vaddq_f32(vfpaccCDEF, vmagic_bias));
  
      vacc0123 = vqsubq_s32(vacc0123, vmagic_bias_less_output_zero_point);
      vacc4567 = vqsubq_s32(vacc4567, vmagic_bias_less_output_zero_point);
      vacc89AB = vqsubq_s32(vacc89AB, vmagic_bias_less_output_zero_point);
      vaccCDEF = vqsubq_s32(vaccCDEF, vmagic_bias_less_output_zero_point);
  
      #if XNN_ARCH_ARM64
        int16x8_t vacc01234567 = vqmovn_high_s32(vqmovn_s32(vacc0123), vacc4567);
        int16x8_t vacc89ABCDEF = vqmovn_high_s32(vqmovn_s32(vacc89AB), vaccCDEF);
      #else
        int16x8_t vacc01234567 = vcombine_s16(vqmovn_s32(vacc0123), vqmovn_s32(vacc4567));
        int16x8_t vacc89ABCDEF = vcombine_s16(vqmovn_s32(vacc89AB), vqmovn_s32(vaccCDEF));
      #endif
  
  
      #if XNN_ARCH_ARM64
        uint8x16_t vout0123456789ABCDEF = vqmovun_high_s16(vqmovun_s16(vacc01234567), vacc89ABCDEF);
      #else
        uint8x16_t vout0123456789ABCDEF = vcombine_u8(vqmovun_s16(vacc01234567), vqmovun_s16(vacc89ABCDEF));
      #endif
  
      vout0123456789ABCDEF = vmaxq_u8(vout0123456789ABCDEF, voutput_min);
  
      vout0123456789ABCDEF = vminq_u8(vout0123456789ABCDEF, voutput_max);
  
      vst1q_u8(output, vout0123456789ABCDEF); output += 16;
    }
    if XNN_UNLIKELY(n != 0) {
      do {
        const uint8x8_t va01234567 = vld1_u8(input_a); input_a += 8;
        const uint8x8_t vb01234567 = vld1_u8(input_b); input_b += 8;
  
        const int16x8_t vxa01234567 = vreinterpretq_s16_u16(vsubl_u8(va01234567, va_zero_point));
        const int16x8_t vxb01234567 = vreinterpretq_s16_u16(vsubl_u8(vb01234567, vb_zero_point));
  
        int32x4_t vacc0123 = vmull_s16(vget_low_s16(vxa01234567), vget_low_s16(vxb01234567));
        int32x4_t vacc4567 = vmull_s16(vget_high_s16(vxa01234567), vget_high_s16(vxb01234567));
  
        float32x4_t vfpacc0123 = vcvtq_f32_s32(vacc0123);
        float32x4_t vfpacc4567 = vcvtq_f32_s32(vacc4567);
  
        vfpacc0123 = vmulq_f32(vfpacc0123, vscale);
        vfpacc4567 = vmulq_f32(vfpacc4567, vscale);
  
        vacc0123 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0123, vmagic_bias));
        vacc4567 = vreinterpretq_s32_f32(vaddq_f32(vfpacc4567, vmagic_bias));
  
        vacc0123 = vqsubq_s32(vacc0123, vmagic_bias_less_output_zero_point);
        vacc4567 = vqsubq_s32(vacc4567, vmagic_bias_less_output_zero_point);
  
        #if XNN_ARCH_ARM64
          int16x8_t vacc01234567 = vqmovn_high_s32(vqmovn_s32(vacc0123), vacc4567);
        #else
          int16x8_t vacc01234567 = vcombine_s16(vqmovn_s32(vacc0123), vqmovn_s32(vacc4567));
        #endif
  
  
        uint8x8_t vout01234567 = vqmovun_s16(vacc01234567);
  
        vout01234567 = vmax_u8(vout01234567, vget_low_u8(voutput_min));
        vout01234567 = vmin_u8(vout01234567, vget_low_u8(voutput_max));
        if XNN_LIKELY(n >= (8 * sizeof(uint8_t))) {
          vst1_u8(output, vout01234567); output += 8;
          n -= 8 * sizeof(uint8_t);
        } else {
          if (n & (4 * sizeof(uint8_t))) {
            vst1_lane_u32((void*) output, vreinterpret_u32_u8(vout01234567), 0); output += 4;
            vout01234567 = vext_u8(vout01234567, vout01234567, 4);
          }
          if (n & (2 * sizeof(uint8_t))) {
            vst1_lane_u16((void*) output, vreinterpret_u16_u8(vout01234567), 0); output += 2;
            vout01234567 = vext_u8(vout01234567, vout01234567, 2);
          }
          if (n & (1 * sizeof(uint8_t))) {
            vst1_lane_u8(output, vout01234567, 0);
          }
          n = 0;
        }
      } while (n != 0);
    }
  }
  