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1// Copyright 2019 Google LLC
2//
3// This source code is licensed under the BSD-style license found in the
4// LICENSE file in the root directory of this source tree.
5
6$assert NR % 4 == 0
7$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
8#include <assert.h>
9
10#include <xmmintrin.h>
11
12#include <xnnpack/gemm.h>
13
14
15void xnn_f32_gemm${"inc" if INC else ""}_minmax_ukernel_${MR}x${NR}s4__sse(
16    size_t mr,
17    size_t nc,
18    size_t kc,
19    const float*restrict a,
20    size_t a_stride,
21    const float*restrict w,
22    float*restrict c,
23    size_t cm_stride,
24    size_t cn_stride,
25    $if INC:
26      const float*restrict acc,
27    const union xnn_f32_minmax_params params[restrict XNN_MIN_ELEMENTS(1)])
28{
29  assert(mr != 0);
30  assert(mr <= ${MR});
31  assert(nc != 0);
32  assert(kc != 0);
33  assert(kc % sizeof(float) == 0);
34  assert(a != NULL);
35  assert(w != NULL);
36  assert(c != NULL);
37  $if INC:
38    assert(acc != NULL);
39
40  const float* a0 = a;
41  float* c0 = c;
42  $for M in range(1, MR):
43    const float* a${M} = (const float*) ((uintptr_t) a${M-1} + a_stride);
44    float* c${M} = (float*) ((uintptr_t) c${M-1} + cm_stride);
45    $if M % 2 == 0:
46      if XNN_UNPREDICTABLE(mr <= ${M}) {
47        a${M} = a${M-1};
48        c${M} = c${M-1};
49      }
50    $elif M + 1 == MR:
51      if XNN_UNPREDICTABLE(mr != ${M+1}) {
52        a${M} = a${M-1};
53        c${M} = c${M-1};
54      }
55    $else:
56      if XNN_UNPREDICTABLE(mr < ${M+1}) {
57        a${M} = a${M-1};
58        c${M} = c${M-1};
59      }
60
61  do {
62    $if INC:
63      $for M in range(MR):
64        $for N in range(0, NR, 4):
65          __m128 vacc${M}x${ABC[N:N+4]} = _mm_load_ps(acc + ${M*NR+N});
66      acc += ${MR*NR};
67    $else:
68      $for N in range(0, NR, 4):
69        __m128 vacc0x${ABC[N:N+4]} = _mm_load_ps(w + ${N});
70      $for M in range(1, MR):
71        $for N in range(0, NR, 4):
72          __m128 vacc${M}x${ABC[N:N+4]} = vacc0x${ABC[N:N+4]};
73      w += ${NR};
74
75    size_t k = kc;
76    while (k >= 4 * sizeof(float)) {
77      $for M in range(MR):
78        __m128 va${M} = _mm_loadu_ps(a${M});
79        a${M} += 4;
80
81      $for L in range(4):
82
83        $for N in range(0, NR, 4):
84          const __m128 vb${ABC[N:N+4]}c${L} = _mm_load_ps(w + ${L * NR + N});
85
86        $for N in range(0, NR, 4):
87          $for M in range(MR):
88            vacc${M}x${ABC[N:N+4]} = _mm_add_ps(vacc${M}x${ABC[N:N+4]}, _mm_mul_ps(va${M}, vb${ABC[N:N+4]}c${L}));
89
90        $if L + 1 != 4:
91          $for M in range(MR):
92            va${M} = _mm_shuffle_ps(va${M}, va${M}, _MM_SHUFFLE(0, 3, 2, 1));
93
94      w += ${4 * NR};
95      k -= 4 * sizeof(float);
96    }
97    if XNN_UNLIKELY(k != 0) {
98      do {
99        $for M in range(MR):
100          const __m128 va${M} = _mm_load1_ps(a${M});
101          a${M} += 1;
102
103        const __m128 vb${ABC[0:4]} = _mm_load_ps(w);
104        $for N in range(4, NR, 4):
105          const __m128 vb${ABC[N:N+4]} = _mm_load_ps(w + ${N});
106        w += ${NR};
107
108        $for N in range(0, NR, 4):
109          $for M in range(MR):
110            vacc${M}x${ABC[N:N+4]} = _mm_add_ps(vacc${M}x${ABC[N:N+4]}, _mm_mul_ps(va${M}, vb${ABC[N:N+4]}));
111
112        k -= sizeof(float);
113      } while (k != 0);
114    }
115
116    const __m128 vmax = _mm_load_ps(params->sse.max);
117    $for N in range(0, NR, 4):
118      $for M in range(MR):
119        vacc${M}x${ABC[N:N+4]} = _mm_min_ps(vacc${M}x${ABC[N:N+4]}, vmax);
120
121    const __m128 vmin = _mm_load_ps(params->sse.min);
122    $for N in range(0, NR, 4):
123      $for M in range(MR):
124        vacc${M}x${ABC[N:N+4]} = _mm_max_ps(vacc${M}x${ABC[N:N+4]}, vmin);
125
126    if XNN_LIKELY(nc >= ${NR}) {
127      $for M in reversed(range(MR)):
128        _mm_storeu_ps(c${M}, vacc${M}x${ABC[0:4]});
129        $for N in range(4, NR, 4):
130          _mm_storeu_ps(c${M} + ${N}, vacc${M}x${ABC[N:N+4]});
131        c${M} = (float*) ((uintptr_t) c${M} + cn_stride);
132
133      $for M in reversed(range(MR)):
134        a${M} = (const float*) ((uintptr_t) a${M} - kc);
135
136      nc -= ${NR};
137    } else {
138      $for LOG2N in reversed(range(NR.bit_length())):
139        $if NR != 1 << LOG2N:
140          if (nc & ${1 << LOG2N}) {
141            $if LOG2N >= 2:
142              $for M in reversed(range(MR)):
143                _mm_storeu_ps(c${M}, vacc${M}x${ABC[0:4]});
144                $for N in range(4, 1 << LOG2N, 4):
145                  _mm_storeu_ps(c${M} + ${N}, vacc${M}x${ABC[N:N+4]});
146
147              $for M in reversed(range(MR)):
148                $for N in range(0, 1 << (LOG2N - 1), 4):
149                  vacc${M}x${ABC[N:N+4]} = vacc${M}x${ABC[N + (1 << LOG2N):N + (1 << LOG2N)+4]};
150
151              $for M in reversed(range(MR)):
152                c${M} += ${1 << LOG2N};
153            $elif LOG2N == 1:
154              $for M in reversed(range(MR)):
155                _mm_storel_pi((__m64*) c${M}, vacc${M}x${ABC[0:4]});
156
157              $for M in reversed(range(MR)):
158                vacc${M}x${ABC[0:4]} = _mm_movehl_ps(vacc${M}x${ABC[0:4]}, vacc${M}x${ABC[0:4]});
159
160              $for M in reversed(range(MR)):
161                c${M} += 2;
162            $elif LOG2N == 0:
163              $for M in reversed(range(MR)):
164                _mm_store_ss(c${M}, vacc${M}x${ABC[0:4]});
165          }
166
167      nc = 0;
168    }
169  } while (nc != 0);
170}
171