text: // Auto-generated file. Do not edit!
  //   Template: src/qs8-gemm/MRx4c8-wasmsimd.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_qs8_gemm_minmax_ukernel_1x4c8__wasmsimd_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_gemm_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
  {
    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;
  
    const v128_t vzero = wasm_f64x2_splat(0.0);
    do {
      v128_t vacc0x0 = wasm_f32x4_replace_lane(vzero, 0, ((const float*) w)[0]);
      v128_t vacc0x1 = wasm_f32x4_replace_lane(vzero, 0, ((const float*) w)[1]);
      v128_t vacc0x2 = wasm_f32x4_replace_lane(vzero, 0, ((const float*) w)[2]);
      v128_t vacc0x3 = wasm_f32x4_replace_lane(vzero, 0, ((const float*) w)[3]);
      w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
  
      size_t k = 0;
      while (k < kc) {
        const v128_t vxa0 = wasm_i16x8_load_8x8(a0);
        a0 += 8;
  
        const v128_t vb01 = wasm_v128_load(w);
        const v128_t vxb0 = wasm_i16x8_widen_low_i8x16(vb01);
        const v128_t vxb1 = wasm_i16x8_widen_high_i8x16(vb01);
  
        const v128_t vprod0x0 = wasm_i16x8_mul(vxb0, vxa0);
        vacc0x0 = wasm_i32x4_add(vacc0x0, wasm_i32x4_widen_low_i16x8(vprod0x0));
  
        const v128_t vprod0x1 = wasm_i16x8_mul(vxb1, vxa0);
        vacc0x1 = wasm_i32x4_add(vacc0x1, wasm_i32x4_widen_low_i16x8(vprod0x1));
        vacc0x0 = wasm_i32x4_add(vacc0x0, wasm_i32x4_widen_high_i16x8(vprod0x0));
  
        vacc0x1 = wasm_i32x4_add(vacc0x1, wasm_i32x4_widen_high_i16x8(vprod0x1));
        const v128_t vb23 = wasm_v128_load((const void*) ((uintptr_t) w + 16 * sizeof(int8_t)));
        const v128_t vxb2 = wasm_i16x8_widen_low_i8x16(vb23);
        const v128_t vxb3 = wasm_i16x8_widen_high_i8x16(vb23);
  
        const v128_t vprod0x2 = wasm_i16x8_mul(vxb2, vxa0);
        vacc0x2 = wasm_i32x4_add(vacc0x2, wasm_i32x4_widen_low_i16x8(vprod0x2));
  
        const v128_t vprod0x3 = wasm_i16x8_mul(vxb3, vxa0);
        vacc0x3 = wasm_i32x4_add(vacc0x3, wasm_i32x4_widen_low_i16x8(vprod0x3));
        vacc0x2 = wasm_i32x4_add(vacc0x2, wasm_i32x4_widen_high_i16x8(vprod0x2));
  
        vacc0x3 = wasm_i32x4_add(vacc0x3, wasm_i32x4_widen_high_i16x8(vprod0x3));
  
        w = (const void*) ((uintptr_t) w + 32 * sizeof(int8_t));
        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));
  
      const v128_t vsign0x0123 = wasm_i32x4_lt(vacc0x0123, vzero);
  
      const v128_t vacc0x01 = wasm_v32x4_shuffle(vacc0x0123, vsign0x0123, 0, 4, 1, 5);
  
      const v128_t vmultiplier = wasm_v128_load(params->wasmsimd.multiplier);
      const v128_t vrounding = wasm_v128_load(params->wasmsimd.rounding);
      const v128_t vprod0x01 = wasm_i64x2_add(wasm_i64x2_mul(vacc0x01, vmultiplier), vrounding);
      const v128_t vacc0x23 = wasm_v32x4_shuffle(vacc0x0123, vsign0x0123, 2, 6, 3, 7);
  
      const v128_t vprod0x23 = wasm_i64x2_add(wasm_i64x2_mul(vacc0x23, vmultiplier), vrounding);
  
      const v128_t vq31prod0x0123 = wasm_v32x4_shuffle(vprod0x01, vprod0x23, 1, 3, 5, 7);
  
      const v128_t vremainder_mask = wasm_v128_load(params->wasmsimd.remainder_mask);
      const v128_t vrem0x0123 = wasm_i32x4_add(wasm_v128_and(vq31prod0x0123, vremainder_mask), wasm_i32x4_lt(vq31prod0x0123, vzero));
  
      const v128_t vthreshold = wasm_v128_load(params->wasmsimd.remainder_threshold);
      const int32_t vshift = params->wasmsimd.shift;
      vacc0x0123 = wasm_i32x4_sub(wasm_i32x4_shr(vq31prod0x0123, vshift), wasm_i32x4_gt(vrem0x0123, vthreshold));
  
      const v128_t voutput_zero_point = wasm_v128_load(params->wasmsimd.output_zero_point);
      v128_t vacc00x0123 = wasm_i16x8_add_saturate(wasm_i16x8_narrow_i32x4(vacc0x0123, vacc0x0123), voutput_zero_point);
  
      v128_t vout = wasm_i8x16_narrow_i16x8(vacc00x0123, vacc00x0123);
  
      const v128_t voutput_min = wasm_v128_load(params->wasmsimd.output_min);
      vout = wasm_i8x16_max(vout, voutput_min);
  
      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 {
        if (nc & 2) {
          *((uint16_t*) c0) = (uint16_t) wasm_i16x8_extract_lane(vout, 0);
          c0 += 2;
          vout = wasm_u32x4_shr(vout, 16);
        }
        if (nc & 1) {
          *c0 = (int8_t) wasm_i8x16_extract_lane(vout, 0);
        }
  
        nc = 0;
      }
    } while (nc != 0);
  }
  