text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-gemm/MRx4c8-wasmsimd-mul16.c.in
  //   Generator: tools/xngen
  //
  // Copyright 2020 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 <wasm_simd128.h>
  
  #include <xnnpack/gemm.h>
  #include <xnnpack/math.h>
  
  
  void xnn_qc8_gemm_minmax_fp32_ukernel_1x4c8__wasmsimd_mul16_ld64(
      size_t mr,
      size_t nc,
      size_t kc,
      const int8_t* restrict a,
      size_t a_stride,
      const void* restrict w,
      int8_t* restrict c,
      size_t cm_stride,
      size_t cn_stride,
      const union xnn_qs8_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
  {
    assert(mr != 0);
    assert(mr <= 1);
    assert(nc != 0);
    assert(kc != 0);
    assert(kc % sizeof(int8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    kc = round_up_po2(kc, 8);
    const int8_t* a0 = a;
    int8_t* c0 = c;
  
    do {
      v128_t vacc0x0 = wasm_f32x4_replace_lane(wasm_f32x4_const_splat(0.0f), 0, ((const float*) w)[0]);
      v128_t vacc0x1 = wasm_f32x4_replace_lane(wasm_f32x4_const_splat(0.0f), 0, ((const float*) w)[1]);
      v128_t vacc0x2 = wasm_f32x4_replace_lane(wasm_f32x4_const_splat(0.0f), 0, ((const float*) w)[2]);
      v128_t vacc0x3 = wasm_f32x4_replace_lane(wasm_f32x4_const_splat(0.0f), 0, ((const float*) w)[3]);
      w = (const void*) ((const int32_t*) w + 4);
  
      size_t k = 0;
      while (k < kc) {
        const v128_t vxa0 = wasm_i16x8_load8x8(a0);
        a0 += 8;
  
        const v128_t vxb0 = wasm_i16x8_load8x8(w);
  
        const v128_t vprod0x0 = wasm_i16x8_mul(vxa0, vxb0);
        vacc0x0 = wasm_i32x4_add(vacc0x0, wasm_i32x4_extend_low_i16x8(vprod0x0));
        vacc0x0 = wasm_i32x4_add(vacc0x0, wasm_i32x4_extend_high_i16x8(vprod0x0));
        const v128_t vxb1 = wasm_i16x8_load8x8((const int8_t*) w + 8);
  
        const v128_t vprod0x1 = wasm_i16x8_mul(vxa0, vxb1);
        vacc0x1 = wasm_i32x4_add(vacc0x1, wasm_i32x4_extend_low_i16x8(vprod0x1));
        vacc0x1 = wasm_i32x4_add(vacc0x1, wasm_i32x4_extend_high_i16x8(vprod0x1));
        const v128_t vxb2 = wasm_i16x8_load8x8((const int8_t*) w + 16);
  
        const v128_t vprod0x2 = wasm_i16x8_mul(vxa0, vxb2);
        vacc0x2 = wasm_i32x4_add(vacc0x2, wasm_i32x4_extend_low_i16x8(vprod0x2));
        vacc0x2 = wasm_i32x4_add(vacc0x2, wasm_i32x4_extend_high_i16x8(vprod0x2));
        const v128_t vxb3 = wasm_i16x8_load8x8((const int8_t*) w + 24);
  
        const v128_t vprod0x3 = wasm_i16x8_mul(vxa0, vxb3);
        vacc0x3 = wasm_i32x4_add(vacc0x3, wasm_i32x4_extend_low_i16x8(vprod0x3));
        vacc0x3 = wasm_i32x4_add(vacc0x3, wasm_i32x4_extend_high_i16x8(vprod0x3));
  
        w = (const void*) ((const int8_t*) w + 32);
        k += 8 * sizeof(int8_t);
      }
  
      const v128_t vacc0x02 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc0x0, vacc0x2, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc0x0, vacc0x2, 2, 6, 3, 7));
      const v128_t vacc0x13 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc0x1, vacc0x3, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc0x1, vacc0x3, 2, 6, 3, 7));
  
      v128_t vacc0x0123 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc0x02, vacc0x13, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc0x02, vacc0x13, 2, 6, 3, 7));
  
      vacc0x0123 = wasm_f32x4_convert_i32x4(vacc0x0123);
  
      const v128_t vscale0123 = wasm_v128_load(w);
      w = (const void*) ((const float*) w + 4);
      vacc0x0123 = wasm_f32x4_mul(vacc0x0123, vscale0123);
  
      const v128_t vmagic_bias = wasm_v128_load(params->wasmsimd.magic_bias);
      vacc0x0123 = wasm_f32x4_add(vacc0x0123, vmagic_bias);
  
      const v128_t vmagic_min = wasm_v128_load(params->wasmsimd.magic_min);
      vacc0x0123 = wasm_i32x4_max(vacc0x0123, vmagic_min);
  
      const v128_t vmagic_bias_less_output_zero_point = wasm_v128_load(params->wasmsimd.magic_bias_less_output_zero_point);
      vacc0x0123 = wasm_i32x4_sub(vacc0x0123, vmagic_bias_less_output_zero_point);
  
      v128_t vacc00x0123 = wasm_i16x8_narrow_i32x4(vacc0x0123, vacc0x0123);
  
      v128_t vout = wasm_i8x16_narrow_i16x8(vacc00x0123, vacc00x0123);
  
      const v128_t voutput_max = wasm_v128_load(params->wasmsimd.output_max);
      vout = wasm_i8x16_min(vout, voutput_max);
  
      if (nc >= 4) {
        *((float*) c0) = (float) wasm_f32x4_extract_lane(vout, 0);
  
        c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
  
        a0 = (const int8_t*) ((uintptr_t) a0 - kc);
  
        nc -= 4;
      } else {
        uint32_t vout0 = wasm_i32x4_extract_lane(vout, 0);
        if (nc & 2) {
          *((uint16_t*) c0) = (uint16_t) vout0;
          vout0 >>= 16;
          c0 += 2;
        }
        if (nc & 1) {
          *c0 = (int8_t) vout0;
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  