1 // Auto-generated file. Do not edit!
2 // Template: src/bf16-gemm/c8-neonbf16.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 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
11 #include <assert.h>
12
13 #include <arm_neon.h>
14
15 #include <xnnpack/gemm.h>
16
17
xnn_bf16_gemm_minmax_ukernel_2x4c8__neonbf16_bfdot(size_t mr,size_t nc,size_t kc,const void * restrict a,size_t a_stride,const void * restrict w_ptr,void * restrict c,size_t cm_stride,size_t cn_stride,const union xnn_bf16_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_bf16_gemm_minmax_ukernel_2x4c8__neonbf16_bfdot(
19 size_t mr,
20 size_t nc,
21 size_t kc,
22 const void* restrict a,
23 size_t a_stride,
24 const void* restrict w_ptr,
25 void* restrict c,
26 size_t cm_stride,
27 size_t cn_stride,
28 const union xnn_bf16_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
29 {
30 assert(mr != 0);
31 assert(mr <= 2);
32 assert(nc != 0);
33 assert(kc != 0);
34 assert(kc % sizeof(bfloat16_t) == 0);
35 assert(a != NULL);
36 assert(w_ptr != NULL);
37 assert(c != NULL);
38
39 const bfloat16_t* a0 = (const bfloat16_t*) a;
40 bfloat16_t* c0 = (bfloat16_t*) c;
41 const bfloat16_t* a1 = (const bfloat16_t*) ((uintptr_t) a0 + a_stride);
42 bfloat16_t* c1 = (bfloat16_t*) ((uintptr_t) c0 + cm_stride);
43 if XNN_UNPREDICTABLE(mr != 2) {
44 a1 = a0;
45 c1 = c0;
46 }
47
48 const bfloat16_t* w = (const bfloat16_t*) w_ptr;
49 do {
50 float32x4_t vacc0x0 = vcvt_f32_bf16(vld1_lane_bf16(w, vreinterpret_bf16_u16(vdup_n_u16(0)), 0)); w += 1;
51 float32x4_t vacc0x1 = vcvt_f32_bf16(vld1_lane_bf16(w, vreinterpret_bf16_u16(vdup_n_u16(0)), 0)); w += 1;
52 float32x4_t vacc0x2 = vcvt_f32_bf16(vld1_lane_bf16(w, vreinterpret_bf16_u16(vdup_n_u16(0)), 0)); w += 1;
53 float32x4_t vacc0x3 = vcvt_f32_bf16(vld1_lane_bf16(w, vreinterpret_bf16_u16(vdup_n_u16(0)), 0)); w += 1;
54 float32x4_t vacc1x0 = vacc0x0;
55 float32x4_t vacc1x1 = vacc0x1;
56 float32x4_t vacc1x2 = vacc0x2;
57 float32x4_t vacc1x3 = vacc0x3;
58
59 size_t k = kc;
60 for (; k >= 8 * sizeof(bfloat16_t); k -= 8 * sizeof(bfloat16_t)) {
61 const bfloat16x8_t va0 = vld1q_bf16(a0); a0 += 8;
62 const bfloat16x8_t va1 = vld1q_bf16(a1); a1 += 8;
63
64 const bfloat16x8_t vb0 = vld1q_bf16(w); w += 8;
65 const bfloat16x8_t vb1 = vld1q_bf16(w); w += 8;
66 const bfloat16x8_t vb2 = vld1q_bf16(w); w += 8;
67 const bfloat16x8_t vb3 = vld1q_bf16(w); w += 8;
68
69 vacc0x0 = vbfdotq_f32(vacc0x0, va0, vb0);
70 vacc1x0 = vbfdotq_f32(vacc1x0, va1, vb0);
71 vacc0x1 = vbfdotq_f32(vacc0x1, va0, vb1);
72 vacc1x1 = vbfdotq_f32(vacc1x1, va1, vb1);
73 vacc0x2 = vbfdotq_f32(vacc0x2, va0, vb2);
74 vacc1x2 = vbfdotq_f32(vacc1x2, va1, vb2);
75 vacc0x3 = vbfdotq_f32(vacc0x3, va0, vb3);
76 vacc1x3 = vbfdotq_f32(vacc1x3, va1, vb3);
77 }
78 if XNN_UNLIKELY(k != 0) {
79 const bfloat16x8_t va0 = vld1q_bf16(a0); a0 = (const bfloat16_t*) ((uintptr_t) a0 + k);
80 const bfloat16x8_t va1 = vld1q_bf16(a1); a1 = (const bfloat16_t*) ((uintptr_t) a1 + k);
81
82 const bfloat16x8_t vb0 = vld1q_bf16(w); w += 8;
83 const bfloat16x8_t vb1 = vld1q_bf16(w); w += 8;
84 const bfloat16x8_t vb2 = vld1q_bf16(w); w += 8;
85 const bfloat16x8_t vb3 = vld1q_bf16(w); w += 8;
86
87 const uint16x8_t vm0 = vceqq_u16(vreinterpretq_u16_bf16(vb0), vmovq_n_u16(0));
88 const uint16x8_t vm1 = vceqq_u16(vreinterpretq_u16_bf16(vb1), vmovq_n_u16(0));
89 const uint16x8_t vm2 = vceqq_u16(vreinterpretq_u16_bf16(vb2), vmovq_n_u16(0));
90 const uint16x8_t vm3 = vceqq_u16(vreinterpretq_u16_bf16(vb3), vmovq_n_u16(0));
91
92 const bfloat16x8_t va0x0 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va0), vm0));
93 vacc0x0 = vbfdotq_f32(vacc0x0, va0x0, vb0);
94 const bfloat16x8_t va1x0 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va1), vm0));
95 vacc1x0 = vbfdotq_f32(vacc1x0, va1x0, vb0);
96 const bfloat16x8_t va0x1 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va0), vm1));
97 vacc0x1 = vbfdotq_f32(vacc0x1, va0x1, vb1);
98 const bfloat16x8_t va1x1 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va1), vm1));
99 vacc1x1 = vbfdotq_f32(vacc1x1, va1x1, vb1);
100 const bfloat16x8_t va0x2 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va0), vm2));
101 vacc0x2 = vbfdotq_f32(vacc0x2, va0x2, vb2);
102 const bfloat16x8_t va1x2 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va1), vm2));
103 vacc1x2 = vbfdotq_f32(vacc1x2, va1x2, vb2);
104 const bfloat16x8_t va0x3 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va0), vm3));
105 vacc0x3 = vbfdotq_f32(vacc0x3, va0x3, vb3);
106 const bfloat16x8_t va1x3 = vreinterpretq_bf16_u16(vbicq_u16(vreinterpretq_u16_bf16(va1), vm3));
107 vacc1x3 = vbfdotq_f32(vacc1x3, va1x3, vb3);
108 }
109
110 #if XNN_ARCH_ARM64
111 const float32x4_t vacc0x01 = vpaddq_f32(vacc0x0, vacc0x1);
112 const float32x4_t vacc1x01 = vpaddq_f32(vacc1x0, vacc1x1);
113 const float32x4_t vacc0x23 = vpaddq_f32(vacc0x2, vacc0x3);
114 const float32x4_t vacc1x23 = vpaddq_f32(vacc1x2, vacc1x3);
115
116 float32x4_t vacc0x0123 = vpaddq_f32(vacc0x01, vacc0x23);
117 float32x4_t vacc1x0123 = vpaddq_f32(vacc1x01, vacc1x23);
118 #else
119 const float32x2_t vsum0x0 = vadd_f32(vget_low_f32(vacc0x0), vget_high_f32(vacc0x0));
120 const float32x2_t vsum1x0 = vadd_f32(vget_low_f32(vacc1x0), vget_high_f32(vacc1x0));
121 const float32x2_t vsum0x1 = vadd_f32(vget_low_f32(vacc0x1), vget_high_f32(vacc0x1));
122 const float32x2_t vsum1x1 = vadd_f32(vget_low_f32(vacc1x1), vget_high_f32(vacc1x1));
123 const float32x2_t vsum0x2 = vadd_f32(vget_low_f32(vacc0x2), vget_high_f32(vacc0x2));
124 const float32x2_t vsum1x2 = vadd_f32(vget_low_f32(vacc1x2), vget_high_f32(vacc1x2));
125 const float32x2_t vsum0x3 = vadd_f32(vget_low_f32(vacc0x3), vget_high_f32(vacc0x3));
126 const float32x2_t vsum1x3 = vadd_f32(vget_low_f32(vacc1x3), vget_high_f32(vacc1x3));
127
128 float32x4_t vacc0x0123 = vcombine_f32(vpadd_f32(vsum0x0, vsum0x1), vpadd_f32(vsum0x2, vsum0x3));
129 float32x4_t vacc1x0123 = vcombine_f32(vpadd_f32(vsum1x0, vsum1x1), vpadd_f32(vsum1x2, vsum1x3));
130 #endif
131
132 const float32x4_t vmax = vld1q_dup_f32(¶ms->scalar.max);
133 vacc0x0123 = vminq_f32(vacc0x0123, vmax);
134 vacc1x0123 = vminq_f32(vacc1x0123, vmax);
135
136 const float32x4_t vmin = vld1q_dup_f32(¶ms->scalar.min);
137 vacc0x0123 = vmaxq_f32(vacc0x0123, vmin);
138 vacc1x0123 = vmaxq_f32(vacc1x0123, vmin);
139
140 bfloat16x4_t vout0x0123 = vcvt_bf16_f32(vacc0x0123);
141 bfloat16x4_t vout1x0123 = vcvt_bf16_f32(vacc1x0123);
142
143 if XNN_LIKELY(nc >= 4) {
144 vst1_bf16(c0, vout0x0123);
145 c0 = (bfloat16_t*) ((uintptr_t) c0 + cn_stride);
146 vst1_bf16(c1, vout1x0123);
147 c1 = (bfloat16_t*) ((uintptr_t) c1 + cn_stride);
148
149 a0 = (const bfloat16_t*) ((uintptr_t) a0 - kc);
150 a1 = (const bfloat16_t*) ((uintptr_t) a1 - kc);
151
152 nc -= 4;
153 } else {
154 if (nc & 2) {
155 vst1_lane_u32((void*) c0, vreinterpret_u32_bf16(vout0x0123), 0); c0 += 2;
156 vst1_lane_u32((void*) c1, vreinterpret_u32_bf16(vout1x0123), 0); c1 += 2;
157
158 vout0x0123 = vreinterpret_bf16_u16(vext_u16(vreinterpret_u16_bf16(vout0x0123), vreinterpret_u16_bf16(vout0x0123), 2));
159 vout1x0123 = vreinterpret_bf16_u16(vext_u16(vreinterpret_u16_bf16(vout1x0123), vreinterpret_u16_bf16(vout1x0123), 2));
160 }
161 if (nc & 1) {
162 vst1_lane_bf16(c0, vout0x0123, 0);
163 vst1_lane_bf16(c1, vout1x0123, 0);
164 }
165
166 nc = 0;
167 }
168 } while (nc != 0);
169 }
170