| // Copyright 2019 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 <xnnpack/maxpool.h> |
| |
| |
| void xnn_u8_maxpool_ukernel_9p8q__scalar( |
| size_t n, |
| size_t ks, |
| size_t kc, |
| const uint8_t** input, |
| uint8_t* output, |
| size_t input_increment, |
| size_t output_increment, |
| const union xnn_u8_output_params params[restrict static 1]) |
| { |
| assert(n != 0); |
| assert(ks != 0); |
| assert(kc != 0); |
| |
| const uint8_t voutput_max = params->scalar.max; |
| const uint8_t voutput_min = params->scalar.min; |
| do { |
| uint8_t* o = output; |
| { |
| const uint8_t* i0 = *input++; |
| const uint8_t* i1 = *input++; |
| const uint8_t* i2 = *input++; |
| const uint8_t* i3 = *input++; |
| const uint8_t* i4 = *input++; |
| const uint8_t* i5 = *input++; |
| const uint8_t* i6 = *input++; |
| const uint8_t* i7 = *input++; |
| const uint8_t* i8 = *input++; |
| if (ks < 2) { |
| i1 = i0; |
| } |
| if (ks <= 2) { |
| i2 = i0; |
| } |
| if (ks < 4) { |
| i3 = i0; |
| } |
| if (ks <= 4) { |
| i4 = i0; |
| } |
| if (ks < 6) { |
| i5 = i0; |
| } |
| if (ks <= 6) { |
| i6 = i0; |
| } |
| if (ks < 8) { |
| i7 = i0; |
| } |
| if (ks <= 8) { |
| i8 = i0; |
| } |
| |
| size_t k = kc; |
| do { |
| const uint8_t vi0 = *i0++; |
| const uint8_t vi1 = *i1++; |
| const uint8_t vi2 = *i2++; |
| const uint8_t vi3 = *i3++; |
| const uint8_t vi4 = *i4++; |
| const uint8_t vi5 = *i5++; |
| const uint8_t vi6 = *i6++; |
| const uint8_t vi7 = *i7++; |
| const uint8_t vi8 = *i8++; |
| |
| const uint8_t vmax01 = vi0 > vi1 ? vi0 : vi1; |
| const uint8_t vmax23 = vi2 > vi3 ? vi2 : vi3; |
| const uint8_t vmax45 = vi4 > vi5 ? vi4 : vi5; |
| const uint8_t vmax67 = vi6 > vi7 ? vi6 : vi7; |
| const uint8_t vmax018 = vmax01 > vi8 ? vmax01 : vi8; |
| |
| const uint8_t vmax2345 = vmax23 > vmax45 ? vmax23 : vmax45; |
| const uint8_t vmax01678 = vmax018 > vmax67 ? vmax018 : vmax67; |
| |
| uint8_t vout = vmax2345 > vmax01678 ? vmax2345 : vmax01678; |
| vout = vout > voutput_max ? voutput_max : vout; |
| vout = vout < voutput_min ? voutput_min : vout; |
| |
| *o++ = vout; |
| } while (--k != 0); |
| } |
| |
| for (ptrdiff_t m = (ptrdiff_t) ks - 9; m > 0; m -= 8) { |
| const uint8_t* i0 = *input++; |
| const uint8_t* i1 = *input++; |
| const uint8_t* i2 = *input++; |
| const uint8_t* i3 = *input++; |
| const uint8_t* i4 = *input++; |
| const uint8_t* i5 = *input++; |
| const uint8_t* i6 = *input++; |
| const uint8_t* i7 = *input++; |
| if (m < 2) { |
| i1 = i0; |
| } |
| if (m <= 2) { |
| i2 = i0; |
| } |
| if (m < 4) { |
| i3 = i0; |
| } |
| if (m <= 4) { |
| i4 = i0; |
| } |
| if (m < 6) { |
| i5 = i0; |
| } |
| if (m <= 6) { |
| i6 = i0; |
| } |
| if (m < 8) { |
| i7 = i0; |
| } |
| |
| o = output; |
| size_t k = kc; |
| do { |
| const uint8_t vi0 = *i0++; |
| const uint8_t vi1 = *i1++; |
| const uint8_t vi2 = *i2++; |
| const uint8_t vi3 = *i3++; |
| const uint8_t vi4 = *i4++; |
| const uint8_t vi5 = *i5++; |
| const uint8_t vi6 = *i6++; |
| const uint8_t vi7 = *i7++; |
| const uint8_t vi8 = *o; |
| |
| const uint8_t vmax01 = vi0 > vi1 ? vi0 : vi1; |
| const uint8_t vmax23 = vi2 > vi3 ? vi2 : vi3; |
| const uint8_t vmax45 = vi4 > vi5 ? vi4 : vi5; |
| const uint8_t vmax67 = vi6 > vi7 ? vi6 : vi7; |
| const uint8_t vmax018 = vmax01 > vi8 ? vmax01 : vi8; |
| |
| const uint8_t vmax2345 = vmax23 > vmax45 ? vmax23 : vmax45; |
| const uint8_t vmax01678 = vmax018 > vmax67 ? vmax018 : vmax67; |
| |
| uint8_t vout = vmax2345 > vmax01678 ? vmax2345 : vmax01678; |
| vout = vout > voutput_max ? voutput_max : vout; |
| vout = vout < voutput_min ? voutput_min : vout; |
| |
| *o++ = vout; |
| } while (--k != 0); |
| } |
| input = (const uint8_t**) ((uintptr_t) input + input_increment); |
| output = (uint8_t*) ((uintptr_t) o + output_increment); |
| } while (--n != 0); |
| } |