1 // Auto-generated file. Do not edit!
2 // Template: src/qu8-gemm/c4-neondot.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/gemm.h>
15 #include <xnnpack/math.h>
16
17
xnn_qu8_gemm_minmax_rndnu_ukernel_1x16c4__neondot(size_t mr,size_t nc,size_t kc,const uint8_t * restrict a,size_t a_stride,const void * restrict w,uint8_t * restrict c,size_t cm_stride,size_t cn_stride,const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qu8_gemm_minmax_rndnu_ukernel_1x16c4__neondot(
19 size_t mr,
20 size_t nc,
21 size_t kc,
22 const uint8_t* restrict a,
23 size_t a_stride,
24 const void* restrict w,
25 uint8_t* restrict c,
26 size_t cm_stride,
27 size_t cn_stride,
28 const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
29 {
30 assert(mr != 0);
31 assert(mr <= 1);
32 assert(nc != 0);
33 assert(kc != 0);
34 assert(kc % sizeof(uint8_t) == 0);
35 assert(a != NULL);
36 assert(w != NULL);
37 assert(c != NULL);
38
39 kc = round_up_po2(kc, 4 * sizeof(uint8_t));
40 const uint8_t* a0 = a;
41 uint8_t* c0 = c;
42
43 const uint8x8_t va_zero_point = vld1_dup_u8(¶ms->rndnu_neon.kernel_zero_point[0]);
44
45 // Loop over groups of 16 columns.
46 do {
47 // Initialize accumulators with bias. 16 bias values are loaded from the
48 // weight matrix, at the start of the group of 16 columns.
49 uint32x4_t vpacc0x0123 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
50 uint32x4_t vpacc0x4567 = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
51 uint32x4_t vpacc0x89AB = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
52 uint32x4_t vpacc0xCDEF = vld1q_u32(w); w = (const void*) ((const uint32_t*) w + 4);
53 uint32x2_t vnacc0 = vmov_n_u32(0);
54
55 // Inner accumulation loop along the 16 columns.
56 size_t k = kc;
57 // 2x partial unrolled loop to load 8 bytes at a time.
58 while (k >= 8 * sizeof(uint8_t)) {
59 // Load a 1x8 block of activations.
60 const uint8x8_t va0x01234567 = vld1_u8(a0); a0 += 8;
61
62 // Load a 8x16 block of weights.
63 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
64 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
65 const uint8x16_t vb0123x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
66 const uint8x16_t vb0123xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
67 const uint8x16_t vb4567x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
68 const uint8x16_t vb4567x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
69 const uint8x16_t vb4567x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
70 const uint8x16_t vb4567xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
71
72 // Multiply-accumulate: 1x8 * 8x16 --> 1x16.
73 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
74 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
75 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
76 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb0123x89AB, va0x01234567, 0);
77 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb0123xCDEF, va0x01234567, 0);
78 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb4567x0123, va0x01234567, 1);
79 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb4567x4567, va0x01234567, 1);
80 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb4567x89AB, va0x01234567, 1);
81 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb4567xCDEF, va0x01234567, 1);
82
83 k -= 8 * sizeof(uint8_t);
84 }
85 // Handle up to 4 final positions of `k`
86 if XNN_UNLIKELY(k != 0) {
87 // Load a 1x4 block of activations.
88 const uint8x8_t va0x01234567 = vreinterpret_u8_u32(vld1_lane_u32((const void*) a0, vmov_n_u32(0), 0)); a0 += 4;
89
90 // Load a 4x16 block of weights.
91 const uint8x16_t vb0123x0123 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
92 const uint8x16_t vb0123x4567 = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
93 const uint8x16_t vb0123x89AB = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
94 const uint8x16_t vb0123xCDEF = vld1q_u8(w); w = (const void*) ((const uint8_t*) w + 16);
95
96 // Multiply-accumulate: 1x4 * 4x16 --> 1x16.
97 vnacc0 = vdot_u32(vnacc0, va_zero_point, va0x01234567);
98 vpacc0x0123 = vdotq_lane_u32(vpacc0x0123, vb0123x0123, va0x01234567, 0);
99 vpacc0x4567 = vdotq_lane_u32(vpacc0x4567, vb0123x4567, va0x01234567, 0);
100 vpacc0x89AB = vdotq_lane_u32(vpacc0x89AB, vb0123x89AB, va0x01234567, 0);
101 vpacc0xCDEF = vdotq_lane_u32(vpacc0xCDEF, vb0123xCDEF, va0x01234567, 0);
102 }
103
104 // Subtract zero point from accumulators.
105 vnacc0 = vpadd_u32(vnacc0, vnacc0);
106 const uint32x4_t vnacc0x0123 = vcombine_u32(vnacc0, vnacc0);
107 int32x4_t vacc0x0123 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x0123, vnacc0x0123));
108 int32x4_t vacc0x4567 = vreinterpretq_s32_u32(vsubq_u32(vpacc0x4567, vnacc0x0123));
109 int32x4_t vacc0x89AB = vreinterpretq_s32_u32(vsubq_u32(vpacc0x89AB, vnacc0x0123));
110 int32x4_t vacc0xCDEF = vreinterpretq_s32_u32(vsubq_u32(vpacc0xCDEF, vnacc0x0123));
111
112 const int32x4_t vright_pre_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_pre_shift);
113 const int32x4_t vmultiplier = vld1q_dup_s32(¶ms->rndnu_neon.multiplier);
114 const int32x4_t vright_post_shift = vld1q_dup_s32(¶ms->rndnu_neon.right_post_shift);
115
116 vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
117 vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
118 vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
119 vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
120
121 vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
122 vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
123 vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
124 vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
125
126 vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
127 vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
128 vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
129 vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
130
131 const int16x8_t voutput_zero_point = vld1q_dup_s16(¶ms->rndnu_neon.output_zero_point);
132 #if XNN_ARCH_ARM64
133 const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
134 const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
135
136 uint8x16_t vout0x0123456789ABCDEF = vqmovun_high_s16(vqmovun_s16(vacc0x01234567), vacc0x89ABCDEF);
137 #else
138 const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
139 const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
140
141 uint8x16_t vout0x0123456789ABCDEF = vcombine_u8(vqmovun_s16(vacc0x01234567), vqmovun_s16(vacc0x89ABCDEF));
142 #endif
143 const uint8x16_t voutput_min = vld1q_dup_u8(¶ms->rndnu_neon.output_min);
144 const uint8x16_t voutput_max = vld1q_dup_u8(¶ms->rndnu_neon.output_max);
145
146 vout0x0123456789ABCDEF = vmaxq_u8(vout0x0123456789ABCDEF, voutput_min);
147
148 vout0x0123456789ABCDEF = vminq_u8(vout0x0123456789ABCDEF, voutput_max);
149
150 if (nc >= 16) {
151 vst1q_u8(c0 + 0, vout0x0123456789ABCDEF);
152
153 c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
154
155 a0 = (const uint8_t*) ((uintptr_t) a0 - kc);
156
157 nc -= 16;
158 } else {
159 uint8x8_t vout0x01234567 = vget_low_u8(vout0x0123456789ABCDEF);
160 if (nc & 8) {
161 vst1_u8(c0, vout0x01234567); c0 += 8;
162 vout0x01234567 = vget_high_u8(vout0x0123456789ABCDEF);
163 }
164 if (nc & 4) {
165 vst1_lane_u32((void*) c0, vreinterpret_u32_u8(vout0x01234567), 0); c0 += 4;
166 vout0x01234567 = vext_u8(vout0x01234567, vout0x01234567, 4);
167 }
168 if (nc & 2) {
169 vst1_lane_u16((void*) c0, vreinterpret_u16_u8(vout0x01234567), 0); c0 += 2;
170 vout0x01234567 = vext_u8(vout0x01234567, vout0x01234567, 2);
171 }
172 if (nc & 1) {
173 vst1_lane_u8(c0, vout0x01234567, 0);
174 }
175
176 nc = 0;
177 }
178 } while (nc != 0);
179 }
180