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
|
/*
* Copyright (c) 2019 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "helpers.h"
#if defined(DATA_TYPE) && defined(VEC_SIZE) && defined(CONST_VAL)
#define VEC_TYPE VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE)
#define VEC_INT VEC_DATA_TYPE(int, VEC_SIZE)
#define CONVERT_SELECT(x) CONVERT(x, VEC_DATA_TYPE(SELECT_DT, VEC_SIZE))
#if VEC_SIZE == 1
#define OFFSETS (int)0
#elif VEC_SIZE == 2
#define OFFSETS (int2)(0, 1)
#elif VEC_SIZE == 4
#define OFFSETS (int4)(0, 1, 2, 3)
#elif VEC_SIZE == 8
#define OFFSETS (int8)(0, 1, 2, 3, 4, 5, 6, 7)
#elif VEC_SIZE == 16
#define OFFSETS (int16)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
#else // VEC_SIZE
#error "Only 1, 2, 3, 4, 8 and 16 vector sizes allowed"
#endif // VEC_SIZE
/** Perform a pad operation
*
* @note Data type can be passed using the -DDATA_TYPE compile flag, e.g. -DDATA_TYPE=float
* @note Vector size must be passed using the -DVEC_SIZE compile flag, e.g. -DVEC_SIZE=4
* @note Constant value must be passed using the -DCONST_VAL compile flag, e.g. -DCONST_VAL=1.27
* @note Pad to add to the left must be passed using the -DPAD_LEFT compile flag, e.g. -DPAD_LEFT=5
* @note Input tensor's width must be passed using the -DSRC_WIDTH compile flag, e.g. -DSRC_WIDTH=224
* @note Data type to use for the select instruction must be passed using the -DSELECT_DT compile flag, e.g. -DSELECT_DT=float
* @note In case pad left is more than the vector size, the number of threads to skil alond the X axis must be passed using the
* -DTHREADS_TO_SKIP_X compile flag, e.g. -DTHREADS_TO_SKIP_X=1. This is defined as (PAD_LEFT / VEC_SIZE)
* @note If pad also needs to be added to the top of the tensor, the following compile flags must be passed at compile time:
* -# -DPAD_TOP: Pad to add to the top of the input tensor (e.g. -DPAD_TOP=3)
* -# -DSRC_HEIGHT: Input tensor's height (e.g. -DSRC_HEIGHT=127)
* @note If pad also needs to be added to the depth of the tensor, the following compile flags must be passed at compile time:
* -# -DPAD_NEAR: Pad to add before the first plane of the input tensor (e.g. -DPAD_NEAR=3)
* -# -DSRC_DEPTH: Input tensor's depth (e.g. -DSRC_DEPTH=32)
* @note If pad also needs to be added to the batch of the tensor, the following compile flags must be passed at compile time:
* -# -DPAD_BTOP: Pad to add before the first batch of the input tensor (e.g. -DPAD_BTOP=3)
* -# -DSRC_BATCH: Input tensor's batch size (e.g. -DSRC_BATCH=4)
*
* @param[in] src_ptr Pointer to the source image. Supported data types: U8, S8, QASYMM8, U16, S16, U32, S32, F16, F32
* @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
* @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
* @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] src_stride_z Stride of the source image in Z dimension (in bytes)
* @param[in] src_step_z src_stride_z * number of elements along Z processed per workitem(in bytes)
* @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
* @param[out] dst_ptr Pointer to the destination image. Supported data types: same as @p src_ptr
* @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
* @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
* @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] dst_stride_z Stride of the destination image in Z dimension (in bytes)
* @param[in] dst_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes)
* @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
*/
__kernel void pad_layer(TENSOR3D_DECLARATION(src),
TENSOR3D_DECLARATION(dst),
uint batch)
{
const int x = get_global_id(0);
const int y = get_global_id(1);
const int z = get_global_id(2);
#if defined(PAD_BTOP) || defined(PAD_NEAR)
uint cond = 0;
#if defined(PAD_BTOP)
cond |= batch < PAD_BTOP || batch >= (PAD_BTOP + SRC_BATCH);
#endif // defined(PAD_BTOP)
#if defined(PAD_NEAR)
cond |= z < PAD_NEAR || z >= (PAD_NEAR + SRC_DEPTH);
#endif // defined(PAD_NEAR)
if(cond)
{
Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst);
VSTORE(VEC_SIZE)((VEC_TYPE)CONST_VAL, 0, (__global DATA_TYPE *)dst.ptr);
}
else
{
#endif // defined(PAD_BTOP) || defined(PAD_NEAR)
Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT(src);
Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst);
#if defined(THREADS_TO_SKIP_X)
/* In case the pad left is greater than the vector size, and we are past the threads operating solely on pad values,
* the input pointer must be brought back along the X axis to start from the first non-pad values.
*
* E.g. with VEC_SIZE=2, PAD_LEFT=5, CONST_VAL=0 and 1D input |1 2 3 4 5 6|:
* -# The first thread will compute the output values |0 0| since it detects (x_outs == (0, 1)) < PAD_LEFT
* -# The second thread will compute the output values |0 0| since it detects (x_outs == (2, 3)) < PAD_LEFT
* -# The third thread should compute |0 1|, however the input pointer is now ahead of ((x * VEC_SIZE) == 4) values, reading |4 5|
* -# To detect this, we use ((PAD_LEFT / VEC_SIZE) == THREADS_TO_SKIP_X == 2) and check that it is >= to the current x
* -# So, we bring the pointer back of THREADS_TO_SKIP_X threads, which means multiplying this constant by the input's step along the X axis
* -# Now that the pointer is back of ((THREADS_TO_SKIP_X * src_step_x) == 4) values, it will read the desired values |0 1|
*/
src.ptr -= select(0u, THREADS_TO_SKIP_X * src_step_x, x >= THREADS_TO_SKIP_X);
#endif // defined(THREADS_TO_SKIP_X)
#if defined(PAD_NEAR)
src.ptr -= PAD_NEAR * src_step_z;
#endif // defined(PAD_NEAR)
#if defined(PAD_BTOP)
src.ptr -= PAD_BTOP * SRC_DEPTH * src_step_z;
#endif // defined(PAD_BTOP)
VEC_TYPE src_vals = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)src.ptr);
VEC_INT xs_out = (VEC_INT)(x * VEC_SIZE) + OFFSETS;
VEC_INT cond = xs_out < (VEC_INT)PAD_LEFT || xs_out >= (VEC_INT)(PAD_LEFT + SRC_WIDTH);
#if defined(PAD_TOP)
cond |= (VEC_INT)y < (VEC_INT)PAD_TOP || (VEC_INT)y >= (VEC_INT)(PAD_TOP + SRC_HEIGHT);
#endif // defined(PAD_TOP)
VSTORE(VEC_SIZE)
(select(src_vals, (VEC_TYPE)CONST_VAL, CONVERT_SELECT(cond)), 0, (__global DATA_TYPE *)dst.ptr);
#if defined(PAD_NEAR) || defined(PAD_BTOP)
}
#endif // defined(PAD_NEAR) || defined(PAD_BTOP)
}
#endif // defined(DATA_TYPE) && defined(VEC_SIZE) && defined(CONST_VAL)
|
