| // Copyright 2022 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 <arm_neon.h> |
| |
| #include <xnnpack/maxpool.h> |
| |
| |
| void xnn_f16_maxpool_minmax_ukernel_9p8x__neonfp16arith_c8( |
| size_t output_pixels, |
| size_t kernel_elements, |
| size_t channels, |
| const void** input, |
| size_t input_offset, |
| void* output, |
| size_t input_increment, |
| size_t output_increment, |
| const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(output_pixels != 0); |
| assert(kernel_elements != 0); |
| assert(channels != 0); |
| |
| const float16x8_t voutput_min = vreinterpretq_f16_u16(vld1q_dup_u16(¶ms->neon.min)); |
| const float16x8_t voutput_max = vreinterpretq_f16_u16(vld1q_dup_u16(¶ms->neon.max)); |
| do { |
| __fp16* o = output; |
| { |
| const __fp16* i0 = *input++; |
| const __fp16* i1 = *input++; |
| const __fp16* i2 = *input++; |
| const __fp16* i3 = *input++; |
| const __fp16* i4 = *input++; |
| const __fp16* i5 = *input++; |
| const __fp16* i6 = *input++; |
| const __fp16* i7 = *input++; |
| const __fp16* i8 = *input++; |
| i0 = (const __fp16*) ((uintptr_t) i0 + input_offset); |
| i1 = (const __fp16*) ((uintptr_t) i1 + input_offset); |
| i2 = (const __fp16*) ((uintptr_t) i2 + input_offset); |
| i3 = (const __fp16*) ((uintptr_t) i3 + input_offset); |
| i4 = (const __fp16*) ((uintptr_t) i4 + input_offset); |
| i5 = (const __fp16*) ((uintptr_t) i5 + input_offset); |
| i6 = (const __fp16*) ((uintptr_t) i6 + input_offset); |
| i7 = (const __fp16*) ((uintptr_t) i7 + input_offset); |
| i8 = (const __fp16*) ((uintptr_t) i8 + input_offset); |
| if (kernel_elements < 2) { |
| i1 = i0; |
| } |
| if (kernel_elements <= 2) { |
| i2 = i0; |
| } |
| if (kernel_elements < 4) { |
| i3 = i0; |
| } |
| if (kernel_elements <= 4) { |
| i4 = i0; |
| } |
| if (kernel_elements < 6) { |
| i5 = i0; |
| } |
| if (kernel_elements <= 6) { |
| i6 = i0; |
| } |
| if (kernel_elements < 8) { |
| i7 = i0; |
| } |
| if (kernel_elements <= 8) { |
| i8 = i0; |
| } |
| |
| size_t c = channels; |
| for (; c >= 8; c -= 8) { |
| const float16x8_t vi0 = vld1q_f16(i0); i0 += 8; |
| const float16x8_t vi1 = vld1q_f16(i1); i1 += 8; |
| const float16x8_t vi2 = vld1q_f16(i2); i2 += 8; |
| const float16x8_t vi3 = vld1q_f16(i3); i3 += 8; |
| const float16x8_t vi4 = vld1q_f16(i4); i4 += 8; |
| const float16x8_t vi5 = vld1q_f16(i5); i5 += 8; |
| const float16x8_t vi6 = vld1q_f16(i6); i6 += 8; |
| const float16x8_t vi7 = vld1q_f16(i7); i7 += 8; |
| const float16x8_t vi8 = vld1q_f16(i8); i8 += 8; |
| |
| const float16x8_t vmax018 = vmaxq_f16(vmaxq_f16(vi0, vi1), vi8); |
| const float16x8_t vmax23 = vmaxq_f16(vi2, vi3); |
| const float16x8_t vmax45 = vmaxq_f16(vi4, vi5); |
| const float16x8_t vmax67 = vmaxq_f16(vi6, vi7); |
| |
| const float16x8_t vmax2345 = vmaxq_f16(vmax23, vmax45); |
| const float16x8_t vmax01678 = vmaxq_f16(vmax018, vmax67); |
| const float16x8_t vmax = vmaxq_f16(vmax2345, vmax01678); |
| const float16x8_t vout = vmaxq_f16(vminq_f16(vmax, voutput_max), voutput_min); |
| |
| vst1q_f16(o, vout); o += 8; |
| } |
| if (c != 0) { |
| const float16x8_t vi0 = vld1q_f16(i0); i0 += 8; |
| const float16x8_t vi1 = vld1q_f16(i1); i1 += 8; |
| const float16x8_t vi2 = vld1q_f16(i2); i2 += 8; |
| const float16x8_t vi3 = vld1q_f16(i3); i3 += 8; |
| const float16x8_t vi4 = vld1q_f16(i4); i4 += 8; |
| const float16x8_t vi5 = vld1q_f16(i5); i5 += 8; |
| const float16x8_t vi6 = vld1q_f16(i6); i6 += 8; |
| const float16x8_t vi7 = vld1q_f16(i7); i7 += 8; |
| const float16x8_t vi8 = vld1q_f16(i8); i8 += 8; |
| |
| const float16x8_t vmax018 = vmaxq_f16(vmaxq_f16(vi0, vi1), vi8); |
| const float16x8_t vmax23 = vmaxq_f16(vi2, vi3); |
| const float16x8_t vmax45 = vmaxq_f16(vi4, vi5); |
| const float16x8_t vmax67 = vmaxq_f16(vi6, vi7); |
| |
| const float16x8_t vmax2345 = vmaxq_f16(vmax23, vmax45); |
| const float16x8_t vmax01678 = vmaxq_f16(vmax018, vmax67); |
| const float16x8_t vmax = vmaxq_f16(vmax2345, vmax01678); |
| float16x8_t vout = vmaxq_f16(vminq_f16(vmax, voutput_max), voutput_min); |
| |
| float16x4_t vout_lo = vget_low_f16(vout); |
| if (c & 4) { |
| vst1_f16(o, vout_lo); o += 4; |
| vout_lo = vget_high_f16(vout); |
| } |
| if (c & 2) { |
| vst1_lane_u32((void*) o, vreinterpret_u32_f16(vout_lo), 0); o += 2; |
| vout_lo = vext_f16(vout_lo, vout_lo, 2); |
| } |
| if (c & 1) { |
| vst1_lane_f16(o, vout_lo, 0); o += 1; |
| } |
| } |
| } |
| |
| for (ptrdiff_t k = (ptrdiff_t) kernel_elements - 9; k > 0; k -= 8) { |
| const __fp16* i0 = *input++; |
| const __fp16* i1 = *input++; |
| const __fp16* i2 = *input++; |
| const __fp16* i3 = *input++; |
| const __fp16* i4 = *input++; |
| const __fp16* i5 = *input++; |
| const __fp16* i6 = *input++; |
| const __fp16* i7 = *input++; |
| i0 = (const __fp16*) ((uintptr_t) i0 + input_offset); |
| i1 = (const __fp16*) ((uintptr_t) i1 + input_offset); |
| i2 = (const __fp16*) ((uintptr_t) i2 + input_offset); |
| i3 = (const __fp16*) ((uintptr_t) i3 + input_offset); |
| i4 = (const __fp16*) ((uintptr_t) i4 + input_offset); |
| i5 = (const __fp16*) ((uintptr_t) i5 + input_offset); |
| i6 = (const __fp16*) ((uintptr_t) i6 + input_offset); |
| i7 = (const __fp16*) ((uintptr_t) i7 + input_offset); |
| if (k < 2) { |
| i1 = i0; |
| } |
| if (k <= 2) { |
| i2 = i0; |
| } |
| if (k < 4) { |
| i3 = i0; |
| } |
| if (k <= 4) { |
| i4 = i0; |
| } |
| if (k < 6) { |
| i5 = i0; |
| } |
| if (k <= 6) { |
| i6 = i0; |
| } |
| if (k < 8) { |
| i7 = i0; |
| } |
| |
| o = output; |
| size_t c = channels; |
| for (; c >= 8; c -= 8) { |
| const float16x8_t vi0 = vld1q_f16(i0); i0 += 8; |
| const float16x8_t vi1 = vld1q_f16(i1); i1 += 8; |
| const float16x8_t vi2 = vld1q_f16(i2); i2 += 8; |
| const float16x8_t vi3 = vld1q_f16(i3); i3 += 8; |
| const float16x8_t vi4 = vld1q_f16(i4); i4 += 8; |
| const float16x8_t vi5 = vld1q_f16(i5); i5 += 8; |
| const float16x8_t vi6 = vld1q_f16(i6); i6 += 8; |
| const float16x8_t vi7 = vld1q_f16(i7); i7 += 8; |
| const float16x8_t vo = vld1q_f16(o); |
| |
| const float16x8_t vmax01 = vmaxq_f16(vmaxq_f16(vi0, vi1), vo); |
| const float16x8_t vmax23 = vmaxq_f16(vi2, vi3); |
| const float16x8_t vmax45 = vmaxq_f16(vi4, vi5); |
| const float16x8_t vmax67 = vmaxq_f16(vi6, vi7); |
| |
| const float16x8_t vmax2345 = vmaxq_f16(vmax23, vmax45); |
| const float16x8_t vmax0167 = vmaxq_f16(vmax01, vmax67); |
| const float16x8_t vmax = vmaxq_f16(vmax2345, vmax0167); |
| const float16x8_t vout = vmaxq_f16(vminq_f16(vmax, voutput_max), voutput_min); |
| |
| vst1q_f16(o, vout); o += 8; |
| } |
| if (c != 0) { |
| const float16x8_t vi0 = vld1q_f16(i0); |
| const float16x8_t vi1 = vld1q_f16(i1); |
| const float16x8_t vi2 = vld1q_f16(i2); |
| const float16x8_t vi3 = vld1q_f16(i3); |
| const float16x8_t vi4 = vld1q_f16(i4); |
| const float16x8_t vi5 = vld1q_f16(i5); |
| const float16x8_t vi6 = vld1q_f16(i6); |
| const float16x8_t vi7 = vld1q_f16(i7); |
| const float16x8_t vo = vld1q_f16(o); |
| |
| const float16x8_t vmax01 = vmaxq_f16(vmaxq_f16(vi0, vi1), vo); |
| const float16x8_t vmax23 = vmaxq_f16(vi2, vi3); |
| const float16x8_t vmax45 = vmaxq_f16(vi4, vi5); |
| const float16x8_t vmax67 = vmaxq_f16(vi6, vi7); |
| |
| const float16x8_t vmax2345 = vmaxq_f16(vmax23, vmax45); |
| const float16x8_t vmax0167 = vmaxq_f16(vmax01, vmax67); |
| const float16x8_t vmax = vmaxq_f16(vmax2345, vmax0167); |
| float16x8_t vout = vmaxq_f16(vminq_f16(vmax, voutput_max), voutput_min); |
| |
| float16x4_t vout_lo = vget_low_f16(vout); |
| if (c & 4) { |
| vst1_f16(o, vout_lo); o += 4; |
| vout_lo = vget_high_f16(vout); |
| } |
| if (c & 2) { |
| vst1_lane_u32((void*) o, vreinterpret_u32_f16(vout_lo), 0); o += 2; |
| vout_lo = vext_f16(vout_lo, vout_lo, 2); |
| } |
| if (c & 1) { |
| vst1_lane_f16(o, vout_lo, 0); o += 1; |
| } |
| } |
| } |
| input = (const void**) ((uintptr_t) input + input_increment); |
| output = (__fp16*) ((uintptr_t) o + output_increment); |
| } while (--output_pixels != 0); |
| } |
