| /* |
| * Copyright (c) 2018-2021, 2023-2024 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(NUM_REVERSE_DIMS) |
| |
| #if NUM_REVERSE_DIMS > 4 |
| #error("Reversing more than 4 dimensions is not currently supported") |
| #endif /* NUM_REVERSE_DIMS > 4 */ |
| |
| /** Performs reverse along the specified axis. |
| * |
| * @note The data type must be given as a preprocessor argument using -DDATA_TYPE=num. e.g. -DDATA_TYPE=uint |
| * @note The number of dimensions to reverse must be given as a preprocessor argument using -DNUM_REVERSE_DIMS=num, e.g. -DNUM_REVERSE_DIMS=3 |
| * @note The number of dimensions of the source tensor must be given as a preprocessor argument using -DRANK=num, e.g. -DRANK=3 |
| * @note The values in axis_tensor must be within [-rank, rank-1]. |
| * |
| * @param[in] src_ptr Pointer to the source tensor. Supported data types: All |
| * @param[in] src_stride_x Stride of the first source tensor 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 first source tensor 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 first source tensor 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_stride_w Stride of the first source tensor in Z dimension (in bytes) |
| * @param[in] src_step_w 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 first source tensor |
| * @param[in] axis_ptr Pointer to the source vector. Supported data types: U32 |
| * @param[in] axis_stride_x Stride of the first source tensor in X dimension (in bytes) |
| * @param[in] axis_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] axis_offset_first_element_in_bytes The offset of the first element in the first source tensor |
| * @param[out] dst_ptr Pointer to the destination tensor. Supported data types: same as @p src_ptr |
| * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes) |
| * @param[in] dst_step_x output_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes) |
| * @param[in] dst_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes) |
| * @param[in] dst_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) |
| * @param[in] dst_stride_w Stride of the destination tensor in Z dimension (in bytes) |
| * @param[in] dst_step_w output_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 tensor |
| */ |
| __kernel void reverse(TENSOR4D_DECLARATION(src), |
| VECTOR_DECLARATION(axis), |
| TENSOR4D_DECLARATION(dst), |
| const uint width, |
| const uint height, |
| const uint depth, |
| const uint batches) |
| { |
| Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, depth); |
| Vector axis = CONVERT_TO_VECTOR_STRUCT_NO_STEP(axis); |
| Tensor4D dst = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(dst); |
| |
| const uint x_in = get_global_id(0); |
| const uint y_in = get_global_id(1); |
| const uint z_in = get_global_id(2) % depth; |
| const uint w_in = get_global_id(2) / depth; |
| |
| const uint4 dims = (uint4)(0, 1, 2, 3); |
| int4 to_reverse = (int4)(0, 0, 0, 0); |
| |
| VEC_DATA_TYPE(int, NUM_REVERSE_DIMS) indices = VLOAD(NUM_REVERSE_DIMS)(0,(__global int *)axis.ptr); |
| #if defined(USE_INVERTED_AXIS) |
| indices = select((VEC_DATA_TYPE(int, NUM_REVERSE_DIMS)) RANK - 1, -1, indices < 0) - indices; |
| #else /* defined(USE_INVERTED_AXIS) */ |
| indices = select(indices, indices + RANK, indices < 0); |
| #endif /* defined(USE_INVERTED_AXIS) */ |
| |
| #if NUM_REVERSE_DIMS == 1 |
| to_reverse = ((uint4)indices == dims); |
| #elif NUM_REVERSE_DIMS == 2 |
| to_reverse = ((uint4)indices.s0 == dims) || ((uint4)indices.s1 == dims); |
| #elif NUM_REVERSE_DIMS == 3 |
| to_reverse = ((uint4)indices.s0 == dims) || ((uint4)indices.s1 == dims) || ((uint4)indices.s2 == dims); |
| #else /* NUM_REVERSE_DIMS == 1 */ |
| to_reverse = ((uint4)indices.s0 == dims) || ((uint4)indices.s1 == dims) || ((uint4)indices.s2 == dims) || ((uint4)indices.s3 == dims); |
| #endif /* NUM_REVERSE_DIMS == 1 */ |
| |
| const uint x_out = to_reverse.s0 ? width - x_in - 1 : x_in; |
| const uint y_out = to_reverse.s1 ? height - y_in - 1 : y_in; |
| const uint z_out = to_reverse.s2 ? depth - z_in - 1 : z_in; |
| const uint w_out = to_reverse.s3 ? batches - w_in - 1 : w_in; |
| |
| *((__global DATA_TYPE *)tensor4D_offset(&dst, x_out, y_out, z_out, w_out)) = *((__global DATA_TYPE *)src.ptr); |
| } |
| #endif // defined(DATA_TYPE) && defined(NUM_REVERSE_DIMS) |