text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-gemm/MRx4c2-wasmsimd-dot16x2.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 <wasm_simd128.h>
  
  #include <xnnpack/gemm.h>
  #include <xnnpack/math.h>
  
  
  
  void xnn_qu8_gemm_minmax_fp32_ukernel_1x4c2__wasmsimd_dot16x2_ld128(
      size_t mr,
      size_t nc,
      size_t kc,
      const uint8_t* restrict a,
      size_t a_stride,
      const void* restrict w,
      uint8_t* restrict c,
      size_t cm_stride,
      size_t cn_stride,
      const union xnn_qu8_conv_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(uint8_t) == 0);
    assert(a != NULL);
    assert(w != NULL);
    assert(c != NULL);
  
    kc = round_up_po2(kc, 2);
    const uint8_t* a0 = a;
    uint8_t* c0 = c;
  
    do {
      v128_t vacc0x0123 = wasm_v128_load(w);
      w = (const void*) ((const int32_t*) w + 4);
  
      size_t k = kc;
      const v128_t vb_zero_point = wasm_v128_load(params->fp32_wasmsimd.kernel_zero_point);
      while (k >= 8 * sizeof(uint8_t)) {
        const v128_t vxa0 = wasm_u16x8_load8x8((const v128_t*) a0);
        a0 += 8;
  
        const v128_t vb01 = wasm_v128_load(w);
        const v128_t vxb0 = wasm_i16x8_sub(wasm_u16x8_extend_low_u8x16(vb01), vb_zero_point);
        const v128_t vxb1 = wasm_i16x8_sub(wasm_u16x8_extend_high_u8x16(vb01), vb_zero_point);
  
        vacc0x0123 = wasm_i32x4_add(vacc0x0123,
          wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 0, 0, 0, 0), vxb0));
  
        vacc0x0123 = wasm_i32x4_add(vacc0x0123,
          wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 1, 1, 1, 1), vxb1));
        const v128_t vb23 = wasm_v128_load((const uint8_t*) w + 16);
        const v128_t vxb2 = wasm_i16x8_sub(wasm_u16x8_extend_low_u8x16(vb23), vb_zero_point);
        const v128_t vxb3 = wasm_i16x8_sub(wasm_u16x8_extend_high_u8x16(vb23), vb_zero_point);
  
        vacc0x0123 = wasm_i32x4_add(vacc0x0123,
          wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 2, 2, 2, 2), vxb2));
  
        vacc0x0123 = wasm_i32x4_add(vacc0x0123,
          wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 3, 3, 3, 3), vxb3));
  
        w = (const void*) ((const uint8_t*) w + 32);
        k -= 8 * sizeof(uint8_t);
      }
      if (k != 0) {
        const v128_t vxa0 = wasm_u16x8_load8x8(a0);
        a0 = (const uint8_t*) ((uintptr_t) a0 + k);
  
        const v128_t vxb0 = wasm_i16x8_sub(wasm_u16x8_load8x8(w), vb_zero_point);
        w = (const void*) ((const uint8_t*) w + 8);
  
        vacc0x0123 = wasm_i32x4_add(vacc0x0123,
          wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 0, 0, 0, 0), vxb0));
  
        if (k > 2 * sizeof(uint8_t)) {
          const v128_t vxb1 = wasm_i16x8_sub(wasm_u16x8_load8x8(w), vb_zero_point);
          w = (const void*) ((const uint8_t*) w + 8);
  
          vacc0x0123 = wasm_i32x4_add(vacc0x0123,
            wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 1, 1, 1, 1), vxb1));
  
          if (k > 4 * sizeof(uint8_t)) {
            const v128_t vxb2 = wasm_i16x8_sub(wasm_u16x8_load8x8(w), vb_zero_point);
            w = (const void*) ((const uint8_t*) w + 8);
  
            vacc0x0123 = wasm_i32x4_add(vacc0x0123,
              wasm_i32x4_dot_i16x8(wasm_v32x4_shuffle(vxa0, vxa0, 2, 2, 2, 2), vxb2));
          }
        }
      }
  
      vacc0x0123 = wasm_f32x4_convert_i32x4(vacc0x0123);
  
      const v128_t vscale = wasm_v128_load(params->fp32_wasmsimd.scale);
      vacc0x0123 = wasm_f32x4_mul(vacc0x0123, vscale);
  
      const v128_t vmagic_bias = wasm_v128_load(params->fp32_wasmsimd.magic_bias);
      vacc0x0123 = wasm_f32x4_add(vacc0x0123, vmagic_bias);
  
      const v128_t vmagic_min = wasm_v128_load(params->fp32_wasmsimd.magic_min);
      vacc0x0123 = wasm_i32x4_max(vacc0x0123, vmagic_min);
  
      const v128_t vmagic_bias_less_output_zero_point = wasm_v128_load(params->fp32_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_u8x16_narrow_i16x8(vacc00x0123, vacc00x0123);
  
      const v128_t voutput_max = wasm_v128_load(params->fp32_wasmsimd.output_max);
      vout = wasm_u8x16_min(vout, voutput_max);
  
      if (nc >= 4) {
        *((float*) c0) = (float) wasm_f32x4_extract_lane(vout, 0);
  
        c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
  
        a0 = (const uint8_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 = (uint8_t) vout0;
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  