1// Copyright 2020 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$assert BATCH_TILE % 4 == 0
7$assert BATCH_TILE >= 4
8$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
9$assert OP in ["ADD", "DIV", "MAX", "MIN", "MUL", "SUB", "SQRDIFF"]
10$assert ACTIVATION in ["LINEAR", "MINMAX", "RELU"]
11#include <assert.h>
12
13#include <wasm_simd128.h>
14
15#include <xnnpack/common.h>
16#include <xnnpack/vbinary.h>
17
18
19$WASM_F32X4_OP = {
20$  "ADD": "wasm_f32x4_add",
21$  "DIV": "wasm_f32x4_div",
22$  "MAX": "wasm_f32x4_max",
23$  "MIN": "wasm_f32x4_min",
24$  "MUL": "wasm_f32x4_mul",
25$  "SUB": "wasm_f32x4_sub",
26$  "SQRDIFF": "wasm_f32x4_sub",
27$}[OP]
28$ARCH_SUFFIX = "" if ACTIVATION in ["LINEAR", "RELU"] and OP not in ["MIN", "MAX"] else "_x86" if X86 else "_arm"
29$ACTIVATION_SUFFIX = {"LINEAR": ""}.get(ACTIVATION, "_" + ACTIVATION.lower())
30$PARAMS = {"LINEAR": "xnn_f32_default_params", "RELU": "xnn_f32_relu_params", "MINMAX": "xnn_f32_minmax_params"}[ACTIVATION]
31void xnn_f32_v${OP.lower()}${ACTIVATION_SUFFIX}_ukernel__wasmsimd${ARCH_SUFFIX}_x${BATCH_TILE}(
32    size_t n,
33    const float* a,
34    const float* b,
35    float* y,
36    const union ${PARAMS} params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
37{
38  assert(n != 0);
39  assert(n % sizeof(float) == 0);
40  assert(a != NULL);
41  assert(b != NULL);
42  assert(y != NULL);
43
44  $if ACTIVATION == "MINMAX":
45    const v128_t vy_min = wasm_v32x4_load_splat(&params->scalar.min);
46    const v128_t vy_max = wasm_v32x4_load_splat(&params->scalar.max);
47  $elif ACTIVATION == "RELU":
48    const v128_t vzero = wasm_f32x4_splat(0.0f);
49
50  for (; n >= ${BATCH_TILE} * sizeof(float); n -= ${BATCH_TILE} * sizeof(float)) {
51    const v128_t va${ABC[0:4]} = wasm_v128_load(a);
52    $for N in range(4, BATCH_TILE, 4):
53      const v128_t va${ABC[N:N+4]} = wasm_v128_load(a + ${N});
54    a += ${BATCH_TILE};
55
56    const v128_t vb${ABC[0:4]} = wasm_v128_load(b);
57    $for N in range(4, BATCH_TILE, 4):
58      const v128_t vb${ABC[N:N+4]} = wasm_v128_load(b + ${N});
59    b += ${BATCH_TILE};
60
61    $if OP == "MIN" and X86:
62      $for N in range(0, BATCH_TILE, 4):
63        const v128_t vm${ABC[N:N+4]} = wasm_f32x4_lt(va${ABC[N:N+4]}, vb${ABC[N:N+4]});
64
65      $for N in range(0, BATCH_TILE, 4):
66        v128_t vy${ABC[N:N+4]} = wasm_v128_bitselect(va${ABC[N:N+4]}, vb${ABC[N:N+4]}, vm${ABC[N:N+4]});
67    $elif OP == "MAX" and X86:
68      $for N in range(0, BATCH_TILE, 4):
69        const v128_t vm${ABC[N:N+4]} = wasm_f32x4_le(va${ABC[N:N+4]}, vb${ABC[N:N+4]});
70
71      $for N in range(0, BATCH_TILE, 4):
72        v128_t vy${ABC[N:N+4]} = wasm_v128_bitselect(vb${ABC[N:N+4]}, va${ABC[N:N+4]}, vm${ABC[N:N+4]});
73    $else:
74      $for N in range(0, BATCH_TILE, 4):
75        v128_t vy${ABC[N:N+4]} = ${WASM_F32X4_OP}(va${ABC[N:N+4]}, vb${ABC[N:N+4]});
76
77      $if OP == "SQRDIFF":
78        $for N in range(0, BATCH_TILE, 4):
79          vy${ABC[N:N+4]} = wasm_f32x4_mul(vy${ABC[N:N+4]}, vy${ABC[N:N+4]});
80
81    $if ACTIVATION == "MINMAX":
82      $if X86:
83        $for N in range(0, BATCH_TILE, 4):
84          const v128_t vltmask${ABC[N:N+4]} = wasm_f32x4_lt(vy${ABC[N:N+4]}, vy_min);
85
86        $for N in range(0, BATCH_TILE, 4):
87          const v128_t vngtmask${ABC[N:N+4]} = wasm_f32x4_le(vy${ABC[N:N+4]}, vy_max);
88          vy${ABC[N:N+4]} = wasm_v128_bitselect(vy_min, vy${ABC[N:N+4]}, vltmask${ABC[N:N+4]});
89
90        $for N in range(0, BATCH_TILE, 4):
91          vy${ABC[N:N+4]} = wasm_v128_bitselect(vy${ABC[N:N+4]}, vy_max, vngtmask${ABC[N:N+4]});
92      $else:
93        $for N in range(0, BATCH_TILE, 4):
94          vy${ABC[N:N+4]} = wasm_f32x4_max(vy${ABC[N:N+4]}, vy_min);
95
96        $for N in range(0, BATCH_TILE, 4):
97          vy${ABC[N:N+4]} = wasm_f32x4_min(vy${ABC[N:N+4]}, vy_max);
98    $elif ACTIVATION == "RELU":
99      $for N in range(0, BATCH_TILE, 4):
100        vy${ABC[N:N+4]} = wasm_i32x4_max(vy${ABC[N:N+4]}, vzero);
101
102    wasm_v128_store(y, vy${ABC[0:4]});
103    $for N in range(4, BATCH_TILE, 4):
104      wasm_v128_store(y + ${N}, vy${ABC[N:N+4]});
105    y += ${BATCH_TILE};
106  }
107  $if BATCH_TILE > 4:
108    for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
109      const v128_t va = wasm_v128_load(a);
110      a += 4;
111
112      const v128_t vb = wasm_v128_load(b);
113      b += 4;
114
115      $if OP == "MIN" and X86:
116        const v128_t vm = wasm_f32x4_lt(va, vb);
117        v128_t vy = wasm_v128_bitselect(va, vb, vm);
118      $elif OP == "MAX" and X86:
119        const v128_t vm = wasm_f32x4_le(va, vb);
120        v128_t vy = wasm_v128_bitselect(vb, va, vm);
121      $else:
122        v128_t vy = ${WASM_F32X4_OP}(va, vb);
123        $if OP == "SQRDIFF":
124          vy = wasm_f32x4_mul(vy, vy);
125
126      $if ACTIVATION == "MINMAX":
127        $if X86:
128          const v128_t vltmask = wasm_f32x4_lt(vy, vy_min);
129          const v128_t vngtmask = wasm_f32x4_le(vy, vy_max);
130          vy = wasm_v128_bitselect(vy_min, vy, vltmask);
131          vy = wasm_v128_bitselect(vy, vy_max, vngtmask);
132        $else:
133          vy = wasm_f32x4_max(vy, vy_min);
134          vy = wasm_f32x4_min(vy, vy_max);
135      $elif ACTIVATION == "RELU":
136        vy = wasm_i32x4_max(vy, vzero);
137
138      wasm_v128_store(y, vy);
139      y += 4;
140    }
141  if XNN_UNLIKELY(n != 0) {
142    const v128_t va = wasm_v128_load(a);
143    const v128_t vb = wasm_v128_load(b);
144
145    $if OP == "MIN" and X86:
146      const v128_t vm = wasm_f32x4_lt(va, vb);
147      v128_t vy = wasm_v128_bitselect(va, vb, vm);
148    $elif OP == "MAX" and X86:
149      const v128_t vm = wasm_f32x4_le(va, vb);
150      v128_t vy = wasm_v128_bitselect(vb, va, vm);
151    $else:
152      v128_t vy = ${WASM_F32X4_OP}(va, vb);
153      $if OP == "SQRDIFF":
154        vy = wasm_f32x4_mul(vy, vy);
155
156    $if ACTIVATION == "MINMAX":
157      $if X86:
158        const v128_t vltmask = wasm_f32x4_lt(vy, vy_min);
159        const v128_t vngtmask = wasm_f32x4_le(vy, vy_max);
160        vy = wasm_v128_bitselect(vy_min, vy, vltmask);
161        vy = wasm_v128_bitselect(vy, vy_max, vngtmask);
162      $else:
163        vy = wasm_f32x4_max(vy, vy_min);
164        vy = wasm_f32x4_min(vy, vy_max);
165    $elif ACTIVATION == "RELU":
166      vy = wasm_i32x4_max(vy, vzero);
167
168    if (n & (2 * sizeof(float))) {
169      *((double*) y) = wasm_f64x2_extract_lane(vy, 0);
170      vy = wasm_v32x4_shuffle(vy, vy, 2, 3, 2, 3);
171      y += 2;
172    }
173    if (n & (1 * sizeof(float))) {
174      *y = wasm_f32x4_extract_lane(vy, 0);
175    }
176  }
177}
178