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1 // Auto-generated file. Do not edit!
2 //   Template: src/qs8-igemm/scalar.c.in
3 //   Generator: tools/xngen
4 //
5 // Copyright 2021 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 <fp16.h>
13 
14 #include <xnnpack/math.h>
15 #include <xnnpack/gemm.h>
16 
17 
xnn_qu8_igemm_minmax_fp32_ukernel_1x2__wasm_fmagic(size_t mr,size_t nc,size_t kc,size_t ks,const uint8_t ** restrict a,const void * restrict w,uint8_t * restrict c,size_t cm_stride,size_t cn_stride,size_t a_offset,const uint8_t * zero,const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_qu8_igemm_minmax_fp32_ukernel_1x2__wasm_fmagic(
19     size_t mr,
20     size_t nc,
21     size_t kc,
22     size_t ks,
23     const uint8_t**restrict a,
24     const void*restrict w,
25     uint8_t*restrict c,
26     size_t cm_stride,
27     size_t cn_stride,
28     size_t a_offset,
29     const uint8_t* zero,
30     const union xnn_qu8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
31 {
32   assert(mr != 0);
33   assert(mr <= 1);
34   assert(nc != 0);
35   assert(kc != 0);
36   assert(ks != 0);
37   assert(ks % (1 * sizeof(void*)) == 0);
38   assert(a != NULL);
39   assert(w != NULL);
40   assert(c != NULL);
41 
42   uint8_t* c0 = c;
43 
44   const int32_t vb_zero_point = params->fp32_scalar_fmagic.kernel_zero_point;
45   do {
46     int32_t vacc0x0 = ((const int32_t*) w)[0];
47     int32_t vacc0x1 = ((const int32_t*) w)[1];
48     w = (const void*) ((const int32_t*) w + 2);
49 
50     size_t p = ks;
51     do {
52       const uint8_t* restrict a0 = a[0];
53       assert(a0 != NULL);
54       if XNN_UNPREDICTABLE(a0 != zero) {
55         a0 = (const uint8_t*) ((uintptr_t) a0 + a_offset);
56       }
57       a += 1;
58 
59       size_t k = kc;
60       do {
61         const int32_t va0 = (int32_t) (uint32_t) *a0++;
62 
63         const int32_t vb0 = (int32_t) (uint32_t) ((const uint8_t*) w)[0] - vb_zero_point;
64         const int32_t vb1 = (int32_t) (uint32_t) ((const uint8_t*) w)[1] - vb_zero_point;
65         w = (const void*) ((const uint8_t*) w + 2);
66 
67         vacc0x0 += va0 * vb0;
68         vacc0x1 += va0 * vb1;
69 
70         k -= sizeof(uint8_t);
71       } while (k != 0);
72       p -= 1 * sizeof(void*);
73     } while (p != 0);
74 
75     float vfpacc0x0 = (float) vacc0x0;
76     float vfpacc0x1 = (float) vacc0x1;
77 
78     const float vscale = params->fp32_scalar_fmagic.scale;
79     vfpacc0x0 *= vscale;
80     vfpacc0x1 *= vscale;
81 
82     const float voutput_min_less_zero_point = params->fp32_scalar_fmagic.output_min_less_zero_point;
83     vfpacc0x0 = __builtin_wasm_max_f32(vfpacc0x0, voutput_min_less_zero_point);
84     vfpacc0x1 = __builtin_wasm_max_f32(vfpacc0x1, voutput_min_less_zero_point);
85 
86     const float voutput_max_less_zero_point = params->fp32_scalar_fmagic.output_max_less_zero_point;
87     vfpacc0x0 = __builtin_wasm_min_f32(vfpacc0x0, voutput_max_less_zero_point);
88     vfpacc0x1 = __builtin_wasm_min_f32(vfpacc0x1, voutput_max_less_zero_point);
89 
90     const float vmagic_bias = params->fp32_scalar_fmagic.magic_bias;
91     vfpacc0x0 += vmagic_bias;
92     vfpacc0x1 += vmagic_bias;
93 
94     const int32_t vmagic_bias_less_output_zero_point = params->fp32_scalar_fmagic.magic_bias_less_output_zero_point;
95     int32_t vout0x0 = (int32_t) fp32_to_bits(vfpacc0x0) - vmagic_bias_less_output_zero_point;
96     int32_t vout0x1 = (int32_t) fp32_to_bits(vfpacc0x1) - vmagic_bias_less_output_zero_point;
97 
98     if XNN_LIKELY(nc >= 2) {
99       c0[0] = (uint8_t) vout0x0;
100       c0[1] = (uint8_t) vout0x1;
101 
102       c0 = (uint8_t*) ((uintptr_t) c0 + cn_stride);
103 
104       a = (const uint8_t**restrict) ((uintptr_t) a - ks);
105       nc -= 2;
106     } else {
107       if (nc & 1) {
108         c0[0] = (uint8_t) vout0x0;
109       }
110 
111       nc = 0;
112     }
113   } while (nc != 0);
114 }
115