text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-gemm/MRx4c8-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_qs8_gemm_minmax_fp32_ukernel_2x4c8__wasmsimd_dot16x2_ld128(
      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_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
  {
    assert(mr != 0);
    assert(mr <= 2);
    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;
    const int8_t* a1 = (const int8_t*) ((uintptr_t) a0 + a_stride);
    int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
    if XNN_UNPREDICTABLE(mr != 2) {
      a1 = a0;
      c1 = c0;
    }
  
    do {
      v128_t vacc0x0 = wasm_v128_load32_zero(w);
      v128_t vacc0x1 = wasm_v128_load32_zero((const int32_t*) w + 1);
      v128_t vacc0x2 = wasm_v128_load32_zero((const int32_t*) w + 2);
      v128_t vacc0x3 = wasm_v128_load32_zero((const int32_t*) w + 3);
      v128_t vacc1x0 = vacc0x0;
      v128_t vacc1x1 = vacc0x1;
      v128_t vacc1x2 = vacc0x2;
      v128_t vacc1x3 = vacc0x3;
      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 vxa1 = wasm_i16x8_load8x8(a1);
        a1 += 8;
  
        const v128_t vb01 = wasm_v128_load(w);
        const v128_t vxb0 = wasm_i16x8_extend_low_i8x16(vb01);
        const v128_t vxb1 = wasm_i16x8_extend_high_i8x16(vb01);
  
        vacc0x0 = wasm_i32x4_add(vacc0x0, wasm_i32x4_dot_i16x8(vxa0, vxb0));
        vacc0x1 = wasm_i32x4_add(vacc0x1, wasm_i32x4_dot_i16x8(vxa0, vxb1));
        vacc1x0 = wasm_i32x4_add(vacc1x0, wasm_i32x4_dot_i16x8(vxa1, vxb0));
        vacc1x1 = wasm_i32x4_add(vacc1x1, wasm_i32x4_dot_i16x8(vxa1, vxb1));
        const v128_t vb23 = wasm_v128_load((const int8_t*) w + 16);
        const v128_t vxb2 = wasm_i16x8_extend_low_i8x16(vb23);
        const v128_t vxb3 = wasm_i16x8_extend_high_i8x16(vb23);
  
        vacc0x2 = wasm_i32x4_add(vacc0x2, wasm_i32x4_dot_i16x8(vxa0, vxb2));
        vacc0x3 = wasm_i32x4_add(vacc0x3, wasm_i32x4_dot_i16x8(vxa0, vxb3));
        vacc1x2 = wasm_i32x4_add(vacc1x2, wasm_i32x4_dot_i16x8(vxa1, vxb2));
        vacc1x3 = wasm_i32x4_add(vacc1x3, wasm_i32x4_dot_i16x8(vxa1, vxb3));
  
        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));
      const v128_t vacc1x02 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc1x0, vacc1x2, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc1x0, vacc1x2, 2, 6, 3, 7));
      const v128_t vacc1x13 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc1x1, vacc1x3, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc1x1, vacc1x3, 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));
      v128_t vacc1x0123 = wasm_i32x4_add(wasm_v32x4_shuffle(vacc1x02, vacc1x13, 0, 4, 1, 5), wasm_v32x4_shuffle(vacc1x02, vacc1x13, 2, 6, 3, 7));
  
      vacc0x0123 = wasm_f32x4_convert_i32x4(vacc0x0123);
      vacc1x0123 = wasm_f32x4_convert_i32x4(vacc1x0123);
  
      const v128_t vscale = wasm_v128_load(params->fp32_wasmsimd.scale);
      vacc0x0123 = wasm_f32x4_mul(vacc0x0123, vscale);
      vacc1x0123 = wasm_f32x4_mul(vacc1x0123, vscale);
  
      const v128_t voutput_min_less_zero_point = wasm_v128_load(params->fp32_wasmsimd.output_min_less_zero_point);
      vacc0x0123 = wasm_f32x4_pmax(voutput_min_less_zero_point, vacc0x0123);
      vacc1x0123 = wasm_f32x4_pmax(voutput_min_less_zero_point, vacc1x0123);
  
      const v128_t voutput_max_less_zero_point = wasm_v128_load(params->fp32_wasmsimd.output_max_less_zero_point);
      vacc0x0123 = wasm_f32x4_pmin(voutput_max_less_zero_point, vacc0x0123);
      vacc1x0123 = wasm_f32x4_pmin(voutput_max_less_zero_point, vacc1x0123);
  
      const v128_t vmagic_bias = wasm_v128_load(params->fp32_wasmsimd.magic_bias);
      vacc0x0123 = wasm_f32x4_add(vacc0x0123, vmagic_bias);
      vacc1x0123 = wasm_f32x4_add(vacc1x0123, vmagic_bias);
  
      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);
      vacc1x0123 = wasm_i32x4_sub(vacc1x0123, vmagic_bias_less_output_zero_point);
  
      v128_t vacc01x0123 = wasm_i16x8_narrow_i32x4(vacc0x0123, vacc1x0123);
  
      v128_t vout = wasm_i8x16_narrow_i16x8(vacc01x0123, vacc01x0123);
  
      if (nc >= 4) {
        *((float*) c0) = (float) wasm_f32x4_extract_lane(vout, 0);
        *((float*) c1) = (float) wasm_f32x4_extract_lane(vout, 1);
  
        c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
        c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
  
        a0 = (const int8_t*) ((uintptr_t) a0 - kc);
        a1 = (const int8_t*) ((uintptr_t) a1 - kc);
  
        nc -= 4;
      } else {
        uint32_t vout0 = wasm_i32x4_extract_lane(vout, 0);
        uint32_t vout1 = wasm_i32x4_extract_lane(vout, 1);
        if (nc & 2) {
          *((uint16_t*) c0) = (uint16_t) vout0;
          vout0 >>= 16;
          c0 += 2;
          *((uint16_t*) c1) = (uint16_t) vout1;
          vout1 >>= 16;
          c1 += 2;
        }
        if (nc & 1) {
          *c0 = (int8_t) vout0;
          *c1 = (int8_t) vout1;
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  