File size: 9,368 Bytes
8b7c501
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
// Auto-generated file. Do not edit!
//   Template: src/f16-gemm/neonfp16arith-ld64.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 <arm_neon.h>

#include <xnnpack/common.h>

#include <xnnpack/gemm.h>
#include <xnnpack/intrinsics-polyfill.h>


void xnn_f16_gemm_minmax_ukernel_4x8__neonfp16arith_ld64(
    size_t mr,
    size_t nc,
    size_t kc,
    const void* restrict a,
    size_t a_stride,
    const void* restrict w,
    void* restrict c,
    size_t cm_stride,
    size_t cn_stride,
    const union xnn_f16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
{
  assert(mr != 0);
  assert(mr <= 4);
  assert(nc != 0);
  assert(kc != 0);
  assert(kc % sizeof(uint16_t) == 0);
  assert(a != NULL);
  assert(w != NULL);
  assert(c != NULL);

  const uint16_t* a0 = (const uint16_t*) a;
  uint16_t* c0 = (uint16_t*) c;
  const uint16_t* a1 = (const uint16_t*) ((uintptr_t) a0 + a_stride);
  uint16_t* c1 = (uint16_t*) ((uintptr_t) c0 + cm_stride);
  if XNN_UNPREDICTABLE(mr < 2) {
    a1 = a0;
    c1 = c0;
  }
  const uint16_t* a2 = (const uint16_t*) ((uintptr_t) a1 + a_stride);
  uint16_t* c2 = (uint16_t*) ((uintptr_t) c1 + cm_stride);
  if XNN_UNPREDICTABLE(mr <= 2) {
    a2 = a1;
    c2 = c1;
  }
  const uint16_t* a3 = (const uint16_t*) ((uintptr_t) a2 + a_stride);
  uint16_t* c3 = (uint16_t*) ((uintptr_t) c2 + cm_stride);
  if XNN_UNPREDICTABLE(mr != 4) {
    a3 = a2;
    c3 = c2;
  }

  do {
    float16x8_t vacc0x01234567 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));
    float16x8_t vacc1x01234567 = vacc0x01234567;
    float16x8_t vacc2x01234567 = vacc0x01234567;
    float16x8_t vacc3x01234567 = vacc0x01234567;

    size_t k = kc;
    while (k >= 4 * sizeof(uint16_t)) {
      const float16x4_t va0 = vreinterpret_f16_u16(vld1_u16(a0)); a0 += 4;
      const float16x4_t va1 = vreinterpret_f16_u16(vld1_u16(a1)); a1 += 4;
      const float16x4_t va2 = vreinterpret_f16_u16(vld1_u16(a2)); a2 += 4;
      const float16x4_t va3 = vreinterpret_f16_u16(vld1_u16(a3)); a3 += 4;

      const float16x8_t vb01234567c0 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));

      #if XNN_ARCH_ARM64
        vacc0x01234567 = vfmaq_lane_f16(vacc0x01234567, vb01234567c0, va0, 0);
        vacc1x01234567 = vfmaq_lane_f16(vacc1x01234567, vb01234567c0, va1, 0);
        vacc2x01234567 = vfmaq_lane_f16(vacc2x01234567, vb01234567c0, va2, 0);
        vacc3x01234567 = vfmaq_lane_f16(vacc3x01234567, vb01234567c0, va3, 0);
      #else
        vacc0x01234567 = vmlaq_lane_f16(vacc0x01234567, vb01234567c0, va0, 0);
        vacc1x01234567 = vmlaq_lane_f16(vacc1x01234567, vb01234567c0, va1, 0);
        vacc2x01234567 = vmlaq_lane_f16(vacc2x01234567, vb01234567c0, va2, 0);
        vacc3x01234567 = vmlaq_lane_f16(vacc3x01234567, vb01234567c0, va3, 0);
      #endif
      const float16x8_t vb01234567c1 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));

      #if XNN_ARCH_ARM64
        vacc0x01234567 = vfmaq_lane_f16(vacc0x01234567, vb01234567c1, va0, 1);
        vacc1x01234567 = vfmaq_lane_f16(vacc1x01234567, vb01234567c1, va1, 1);
        vacc2x01234567 = vfmaq_lane_f16(vacc2x01234567, vb01234567c1, va2, 1);
        vacc3x01234567 = vfmaq_lane_f16(vacc3x01234567, vb01234567c1, va3, 1);
      #else
        vacc0x01234567 = vmlaq_lane_f16(vacc0x01234567, vb01234567c1, va0, 1);
        vacc1x01234567 = vmlaq_lane_f16(vacc1x01234567, vb01234567c1, va1, 1);
        vacc2x01234567 = vmlaq_lane_f16(vacc2x01234567, vb01234567c1, va2, 1);
        vacc3x01234567 = vmlaq_lane_f16(vacc3x01234567, vb01234567c1, va3, 1);
      #endif
      const float16x8_t vb01234567c2 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));

      #if XNN_ARCH_ARM64
        vacc0x01234567 = vfmaq_lane_f16(vacc0x01234567, vb01234567c2, va0, 2);
        vacc1x01234567 = vfmaq_lane_f16(vacc1x01234567, vb01234567c2, va1, 2);
        vacc2x01234567 = vfmaq_lane_f16(vacc2x01234567, vb01234567c2, va2, 2);
        vacc3x01234567 = vfmaq_lane_f16(vacc3x01234567, vb01234567c2, va3, 2);
      #else
        vacc0x01234567 = vmlaq_lane_f16(vacc0x01234567, vb01234567c2, va0, 2);
        vacc1x01234567 = vmlaq_lane_f16(vacc1x01234567, vb01234567c2, va1, 2);
        vacc2x01234567 = vmlaq_lane_f16(vacc2x01234567, vb01234567c2, va2, 2);
        vacc3x01234567 = vmlaq_lane_f16(vacc3x01234567, vb01234567c2, va3, 2);
      #endif
      const float16x8_t vb01234567c3 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));

      #if XNN_ARCH_ARM64
        vacc0x01234567 = vfmaq_lane_f16(vacc0x01234567, vb01234567c3, va0, 3);
        vacc1x01234567 = vfmaq_lane_f16(vacc1x01234567, vb01234567c3, va1, 3);
        vacc2x01234567 = vfmaq_lane_f16(vacc2x01234567, vb01234567c3, va2, 3);
        vacc3x01234567 = vfmaq_lane_f16(vacc3x01234567, vb01234567c3, va3, 3);
      #else
        vacc0x01234567 = vmlaq_lane_f16(vacc0x01234567, vb01234567c3, va0, 3);
        vacc1x01234567 = vmlaq_lane_f16(vacc1x01234567, vb01234567c3, va1, 3);
        vacc2x01234567 = vmlaq_lane_f16(vacc2x01234567, vb01234567c3, va2, 3);
        vacc3x01234567 = vmlaq_lane_f16(vacc3x01234567, vb01234567c3, va3, 3);
      #endif

      k -= 4 * sizeof(uint16_t);
    }
    if XNN_UNLIKELY(k != 0) {
      do {
        const float16x8_t va0 = vreinterpretq_f16_u16(vld1q_dup_u16(a0)); a0 += 1;
        const float16x8_t va1 = vreinterpretq_f16_u16(vld1q_dup_u16(a1)); a1 += 1;
        const float16x8_t va2 = vreinterpretq_f16_u16(vld1q_dup_u16(a2)); a2 += 1;
        const float16x8_t va3 = vreinterpretq_f16_u16(vld1q_dup_u16(a3)); a3 += 1;

        const float16x8_t vb01234567 = vreinterpretq_f16_u16(vld1q_u16(w)); w = (const void*) ((uintptr_t) w + sizeof(float16x8_t));

        vacc0x01234567 = vfmaq_f16(vacc0x01234567, va0, vb01234567);
        vacc1x01234567 = vfmaq_f16(vacc1x01234567, va1, vb01234567);
        vacc2x01234567 = vfmaq_f16(vacc2x01234567, va2, vb01234567);
        vacc3x01234567 = vfmaq_f16(vacc3x01234567, va3, vb01234567);

        k -= sizeof(uint16_t);
      } while (k != 0);
    }


    const float16x8_t vmin = vreinterpretq_f16_u16(vld1q_dup_u16(&params->fp16arith.min));
    vacc0x01234567 = vmaxq_f16(vacc0x01234567, vmin);
    vacc1x01234567 = vmaxq_f16(vacc1x01234567, vmin);
    vacc2x01234567 = vmaxq_f16(vacc2x01234567, vmin);
    vacc3x01234567 = vmaxq_f16(vacc3x01234567, vmin);

    const float16x8_t vmax = vreinterpretq_f16_u16(vld1q_dup_u16(&params->fp16arith.max));
    vacc0x01234567 = vminq_f16(vacc0x01234567, vmax);
    vacc1x01234567 = vminq_f16(vacc1x01234567, vmax);
    vacc2x01234567 = vminq_f16(vacc2x01234567, vmax);
    vacc3x01234567 = vminq_f16(vacc3x01234567, vmax);

    if XNN_LIKELY(nc >= 8) {
      vst1q_u16(c0, vreinterpretq_u16_f16(vacc0x01234567));
      c0 = (uint16_t*) ((uintptr_t) c0 + cn_stride);
      vst1q_u16(c1, vreinterpretq_u16_f16(vacc1x01234567));
      c1 = (uint16_t*) ((uintptr_t) c1 + cn_stride);
      vst1q_u16(c2, vreinterpretq_u16_f16(vacc2x01234567));
      c2 = (uint16_t*) ((uintptr_t) c2 + cn_stride);
      vst1q_u16(c3, vreinterpretq_u16_f16(vacc3x01234567));
      c3 = (uint16_t*) ((uintptr_t) c3 + cn_stride);

      a0 = (const uint16_t*) ((uintptr_t) a0 - kc);
      a1 = (const uint16_t*) ((uintptr_t) a1 - kc);
      a2 = (const uint16_t*) ((uintptr_t) a2 - kc);
      a3 = (const uint16_t*) ((uintptr_t) a3 - kc);

      nc -= 8;
    } else {
      float16x4_t vacc0x0123 = vget_low_f16(vacc0x01234567);
      float16x4_t vacc1x0123 = vget_low_f16(vacc1x01234567);
      float16x4_t vacc2x0123 = vget_low_f16(vacc2x01234567);
      float16x4_t vacc3x0123 = vget_low_f16(vacc3x01234567);
      if (nc & 4) {
        vst1_u16(c0, vreinterpret_u16_f16(vacc0x0123)); c0 += 4;
        vst1_u16(c1, vreinterpret_u16_f16(vacc1x0123)); c1 += 4;
        vst1_u16(c2, vreinterpret_u16_f16(vacc2x0123)); c2 += 4;
        vst1_u16(c3, vreinterpret_u16_f16(vacc3x0123)); c3 += 4;

        vacc0x0123 = vget_high_f16(vacc0x01234567);
        vacc1x0123 = vget_high_f16(vacc1x01234567);
        vacc2x0123 = vget_high_f16(vacc2x01234567);
        vacc3x0123 = vget_high_f16(vacc3x01234567);
      }
      if (nc & 2) {
        vst1_lane_u32((void*) c0, vreinterpret_u32_f16(vacc0x0123), 0); c0 += 2;
        vst1_lane_u32((void*) c1, vreinterpret_u32_f16(vacc1x0123), 0); c1 += 2;
        vst1_lane_u32((void*) c2, vreinterpret_u32_f16(vacc2x0123), 0); c2 += 2;
        vst1_lane_u32((void*) c3, vreinterpret_u32_f16(vacc3x0123), 0); c3 += 2;

        vacc0x0123 = vext_f16(vacc0x0123, vacc0x0123, 2);
        vacc1x0123 = vext_f16(vacc1x0123, vacc1x0123, 2);
        vacc2x0123 = vext_f16(vacc2x0123, vacc2x0123, 2);
        vacc3x0123 = vext_f16(vacc3x0123, vacc3x0123, 2);
      }
      if (nc & 1) {
        vst1_lane_u16(c0, vreinterpret_u16_f16(vacc0x0123), 0);
        vst1_lane_u16(c1, vreinterpret_u16_f16(vacc1x0123), 0);
        vst1_lane_u16(c2, vreinterpret_u16_f16(vacc2x0123), 0);
        vst1_lane_u16(c3, vreinterpret_u16_f16(vacc3x0123), 0);
      }

      nc = 0;
    }
  } while (nc != 0);
}