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1 // Auto-generated file. Do not edit!
2 //   Template: src/qs8-vaddc/neon.c.in
3 //   Generator: tools/xngen
4 //
5 // Copyright 2020 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9 
10 #include <assert.h>
11 
12 #include <arm_neon.h>
13 
14 #include <xnnpack/vadd.h>
15 
16 
xnn_qu8_vaddc_minmax_ukernel__neon_ld64_x16(size_t n,const uint8_t * input_a,const uint8_t * input_b,uint8_t * output,const union xnn_qu8_add_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])17 void xnn_qu8_vaddc_minmax_ukernel__neon_ld64_x16(
18     size_t n,
19     const uint8_t* input_a,
20     const uint8_t* input_b,
21     uint8_t* output,
22     const union xnn_qu8_add_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24   const uint8x8_t va_zero_point = vld1_dup_u8(&params->neon.a_zero_point);
25   const int32x4_t va_multiplier = vld1q_dup_s32(&params->neon.a_multiplier);
26   const int32x4_t vright_shift = vld1q_dup_s32(&params->neon.right_shift);
27   const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->neon.output_zero_point);
28   const uint8x16_t voutput_min = vld1q_dup_u8(&params->neon.output_min);
29   const uint8x16_t voutput_max = vld1q_dup_u8(&params->neon.output_max);
30 
31   const int32_t vxb = (int32_t) *input_b - (int32_t) params->neon.b_zero_point;
32   const int32_t vb = params->neon.b_multiplier;
33   const int32x4_t vbias = vdupq_n_s32(vxb * vb);
34 
35   for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) {
36     const uint8x8_t va01234567 = vld1_u8(input_a); input_a += 8;
37     const uint8x8_t va89ABCDEF = vld1_u8(input_a); input_a += 8;
38 
39     const int16x8_t vxa01234567 = vreinterpretq_s16_u16(vsubl_u8(va01234567, va_zero_point));
40     const int16x8_t vxa89ABCDEF = vreinterpretq_s16_u16(vsubl_u8(va89ABCDEF, va_zero_point));
41 
42     int32x4_t vacc0123 = vmlaq_s32(vbias, vmovl_s16(vget_low_s16(vxa01234567)), va_multiplier);
43     int32x4_t vacc4567 = vmlaq_s32(vbias, vmovl_s16(vget_high_s16(vxa01234567)), va_multiplier);
44     int32x4_t vacc89AB = vmlaq_s32(vbias, vmovl_s16(vget_low_s16(vxa89ABCDEF)), va_multiplier);
45     int32x4_t vaccCDEF = vmlaq_s32(vbias, vmovl_s16(vget_high_s16(vxa89ABCDEF)), va_multiplier);
46 
47     vacc0123 = vrshlq_s32(vacc0123, vright_shift);
48     vacc4567 = vrshlq_s32(vacc4567, vright_shift);
49     vacc89AB = vrshlq_s32(vacc89AB, vright_shift);
50     vaccCDEF = vrshlq_s32(vaccCDEF, vright_shift);
51 
52     const int16x8_t vacc01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0123), vqmovn_s32(vacc4567)), voutput_zero_point);
53     const int16x8_t vacc89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc89AB), vqmovn_s32(vaccCDEF)), voutput_zero_point);
54 
55     uint8x16_t vout0123456789ABCDEF = vcombine_u8(vqmovun_s16(vacc01234567), vqmovun_s16(vacc89ABCDEF));
56 
57     vout0123456789ABCDEF = vmaxq_u8(vout0123456789ABCDEF, voutput_min);
58 
59     vout0123456789ABCDEF = vminq_u8(vout0123456789ABCDEF, voutput_max);
60 
61     vst1q_u8(output, vout0123456789ABCDEF); output += 16;
62   }
63   if XNN_UNLIKELY(n != 0) {
64     do {
65       const uint8x8_t va01234567 = vld1_u8(input_a); input_a += 8;
66 
67       const int16x8_t vxa01234567 = vreinterpretq_s16_u16(vsubl_u8(va01234567, va_zero_point));
68 
69       int32x4_t vacc0123 = vmlaq_s32(vbias, vmovl_s16(vget_low_s16(vxa01234567)), va_multiplier);
70       int32x4_t vacc4567 = vmlaq_s32(vbias, vmovl_s16(vget_high_s16(vxa01234567)), va_multiplier);
71 
72       vacc0123 = vrshlq_s32(vacc0123, vright_shift);
73       vacc4567 = vrshlq_s32(vacc4567, vright_shift);
74 
75       const int16x8_t vacc01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0123), vqmovn_s32(vacc4567)), voutput_zero_point);
76 
77       uint8x8_t vout01234567 = vqmovun_s16(vacc01234567);
78       vout01234567 = vmax_u8(vout01234567, vget_low_u8(voutput_min));
79       vout01234567 = vmin_u8(vout01234567, vget_low_u8(voutput_max));
80 
81       if XNN_LIKELY(n >= (8 * sizeof(uint8_t))) {
82         vst1_u8(output, vout01234567); output += 8;
83         n -= 8 * sizeof(uint8_t);
84       } else {
85         if (n & (4 * sizeof(uint8_t))) {
86           vst1_lane_u32((void*) output, vreinterpret_u32_u8(vout01234567), 0); output += 4;
87           vout01234567 = vext_u8(vout01234567, vout01234567, 4);
88         }
89         if (n & (2 * sizeof(uint8_t))) {
90           vst1_lane_u16((void*) output, vreinterpret_u16_u8(vout01234567), 0); output += 2;
91           vout01234567 = vext_u8(vout01234567, vout01234567, 2);
92         }
93         if (n & (1 * sizeof(uint8_t))) {
94           vst1_lane_u8(output, vout01234567, 0);
95         }
96         n = 0;
97       }
98     } while (n != 0);
99   }
100 }
101