// Auto-generated file. Do not edit!
//   Template: src/f32-qs8-vcvt/sse.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 <emmintrin.h>

#include "xnnpack/common.h"
#include "xnnpack/unaligned.h"
#include "xnnpack/vcvt.h"


void xnn_f32_qu8_vcvt_ukernel__sse2_u24(
    size_t batch,
    const float* input,
    uint8_t* output,
    const struct xnn_f32_qu8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
  assert(batch != 0);
  assert(batch % sizeof(float) == 0);
  assert(input != NULL);
  assert(output != NULL);

  const __m128 vscale = _mm_set1_ps(params->scalar.scale);
  const __m128 voutput_max_less_zero_point = _mm_set1_ps((float) ((int32_t) 255 - (int32_t) params->scalar.output_zero_point));
  const __m128i voutput_zero_point = _mm_set1_epi16(params->scalar.output_zero_point);
  XNN_FORCE_REALIZATION(vscale);
  XNN_FORCE_REALIZATION(voutput_max_less_zero_point);
  XNN_FORCE_REALIZATION(voutput_zero_point);

  for (; batch >= 24 * sizeof(float); batch -= 24 * sizeof(float)) {
    __m128 vx0123 = _mm_loadu_ps(input);
    __m128 vx4567 = _mm_loadu_ps(input + 4);
    __m128 vx89AB = _mm_loadu_ps(input + 8);
    __m128 vxCDEF = _mm_loadu_ps(input + 12);
    __m128 vxGHIJ = _mm_loadu_ps(input + 16);
    __m128 vxKLMN = _mm_loadu_ps(input + 20);
    input += 24;

    vx0123 = _mm_mul_ps(vx0123, vscale);
    vx4567 = _mm_mul_ps(vx4567, vscale);
    vx89AB = _mm_mul_ps(vx89AB, vscale);
    vxCDEF = _mm_mul_ps(vxCDEF, vscale);
    vxGHIJ = _mm_mul_ps(vxGHIJ, vscale);
    vxKLMN = _mm_mul_ps(vxKLMN, vscale);

    vx0123 = _mm_min_ps(vx0123, voutput_max_less_zero_point);
    vx4567 = _mm_min_ps(vx4567, voutput_max_less_zero_point);
    vx89AB = _mm_min_ps(vx89AB, voutput_max_less_zero_point);
    vxCDEF = _mm_min_ps(vxCDEF, voutput_max_less_zero_point);
    vxGHIJ = _mm_min_ps(vxGHIJ, voutput_max_less_zero_point);
    vxKLMN = _mm_min_ps(vxKLMN, voutput_max_less_zero_point);

    const __m128i vy0123 = _mm_cvtps_epi32(vx0123);
    const __m128i vy4567 = _mm_cvtps_epi32(vx4567);
    const __m128i vy89AB = _mm_cvtps_epi32(vx89AB);
    const __m128i vyCDEF = _mm_cvtps_epi32(vxCDEF);
    const __m128i vyGHIJ = _mm_cvtps_epi32(vxGHIJ);
    const __m128i vyKLMN = _mm_cvtps_epi32(vxKLMN);

    __m128i vy01234567 = _mm_packs_epi32(vy0123, vy4567);
    __m128i vy89ABCDEF = _mm_packs_epi32(vy89AB, vyCDEF);
    __m128i vyGHIJKLMN = _mm_packs_epi32(vyGHIJ, vyKLMN);

    vy01234567 = _mm_adds_epi16(vy01234567, voutput_zero_point);
    vy89ABCDEF = _mm_adds_epi16(vy89ABCDEF, voutput_zero_point);
    vyGHIJKLMN = _mm_adds_epi16(vyGHIJKLMN, voutput_zero_point);

    __m128i vy0123456789ABCDEF = _mm_packus_epi16(vy01234567, vy89ABCDEF);
    vyGHIJKLMN = _mm_packus_epi16(vyGHIJKLMN, vyGHIJKLMN);

    _mm_storeu_si128((__m128i*) output, vy0123456789ABCDEF);
    _mm_storel_epi64((__m128i*) (output + 16), vyGHIJKLMN);
    output += 24;
  }
  for (; batch >= 8 * sizeof(float); batch -= 8 * sizeof(float)) {
    __m128 vx_lo = _mm_loadu_ps(input);
    __m128 vx_hi = _mm_loadu_ps(input + 4);
    input += 8;

    vx_lo = _mm_mul_ps(vx_lo, vscale);
    vx_hi = _mm_mul_ps(vx_hi, vscale);

    vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point);
    vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point);

    const __m128i vy_lo = _mm_cvtps_epi32(vx_lo);
    const __m128i vy_hi = _mm_cvtps_epi32(vx_hi);

    __m128i vy = _mm_packs_epi32(vy_lo, vy_hi);
    vy = _mm_adds_epi16(vy, voutput_zero_point);
    vy = _mm_packus_epi16(vy, vy);

    _mm_storel_epi64((__m128i*) output, vy);
    output += 8;
  }
  if XNN_UNLIKELY(batch != 0) {
    __m128 vx_lo = _mm_loadu_ps(input);
    const float* x_hi = (const float*) ((uintptr_t) input + (batch & (4 * sizeof(float))));
    __m128 vx_hi = _mm_loadu_ps(x_hi);

    vx_lo = _mm_mul_ps(vx_lo, vscale);
    vx_hi = _mm_mul_ps(vx_hi, vscale);

    vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point);
    vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point);

    const __m128i vy_lo = _mm_cvtps_epi32(vx_lo);
    const __m128i vy_hi = _mm_cvtps_epi32(vx_hi);

    __m128i vy = _mm_packs_epi32(vy_lo, vy_hi);
    vy = _mm_adds_epi16(vy, voutput_zero_point);
    vy = _mm_packus_epi16(vy, vy);

    if (batch & (4 * sizeof(float))) {
      unaligned_store_u32(output, (uint32_t) _mm_cvtsi128_si32(vy));
      output += 4;
      vy = _mm_srli_epi64(vy, 32);
    }
    {
      uint32_t vy_lo = (uint32_t) _mm_cvtsi128_si32(vy);
      if (batch & (2 * sizeof(float))) {
        unaligned_store_u16(output, (uint16_t) vy_lo);
        output += 2;
        vy_lo >>= 16;
      }
      if (batch & (1 * sizeof(float))) {
        *output = (uint8_t) vy_lo;
      }
    }
  }
}