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/*
* 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(VEC_SIZE)
/** Computes the digit reverse stage on axis X
*
* @param[in] src_ptr Pointer to the source tensor. Supported data types: F32
* @param[in] src_stride_x Stride of the 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 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 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_offset_first_element_in_bytes The offset of the first element in the 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 dst_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 dst_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] dst_stride_z Stride of the source tensor 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 tensor
* @param[in] idx_ptr Pointer to the index tensor. Supported data types: U32
* @param[in] idx_stride_x Stride of the index tensor in X dimension (in bytes)
* @param[in] idx_step_x idx_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] idx_offset_first_element_in_bytes The offset of the first element in the index tensor
*/
__kernel void fft_digit_reverse_axis_0(
TENSOR3D_DECLARATION(src),
TENSOR3D_DECLARATION(dst),
VECTOR_DECLARATION(idx))
{
// Get tensor pointers
Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT_NO_STEP(src);
Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst);
Vector idx = CONVERT_TO_VECTOR_STRUCT(idx);
const unsigned int iidx = *((__global uint *)(idx.ptr));
// Load data
#if VEC_SIZE == 1
float data = *((__global float *)tensor3D_offset(&src, iidx, get_global_id(1), get_global_id(2)));
#elif VEC_SIZE == 2
float2 data = vload2(0, (__global float *)tensor3D_offset(&src, iidx, get_global_id(1), get_global_id(2)));
#else // VEC_SIZE == 1
#error "vec_size of 1 and 2 are supported"
#endif // VEC_SIZE == 1
// Create result
#if VEC_SIZE == 1
float2 res = { data, 0 };
#elif VEC_SIZE == 2
float2 res = data;
#else // VEC_SIZE == 1
#error "vec_size of 1 and 2 are supported"
#endif // VEC_SIZE == 1
// Store result
#if defined(CONJ)
vstore2((float2)(res.s0, -res.s1), 0, (__global float *)dst.ptr);
#else // defined(CONJ)
vstore2(res, 0, (__global float *)dst.ptr);
#endif // defined(CONJ)
}
/** Computes the digit reverse stage on axis Y
*
* @param[in] src_ptr Pointer to the source tensor. Supported data types: F32
* @param[in] src_stride_x Stride of the 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 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 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_offset_first_element_in_bytes The offset of the first element in the 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 dst_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 dst_stride_y * number of elements along Y processed per workitem(in bytes)
* @param[in] dst_stride_z Stride of the source tensor 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 tensor
* @param[in] idx_ptr Pointer to the index tensor. Supported data types: U32
* @param[in] idx_stride_x Stride of the index tensor in X dimension (in bytes)
* @param[in] idx_step_x idx_stride_x * number of elements along X processed per workitem(in bytes)
* @param[in] idx_offset_first_element_in_bytes The offset of the first element in the index tensor
*/
__kernel void fft_digit_reverse_axis_1(
TENSOR3D_DECLARATION(src),
TENSOR3D_DECLARATION(dst),
VECTOR_DECLARATION(idx))
{
// Get tensor pointers
Tensor3D src = CONVERT_TO_TENSOR3D_STRUCT_NO_STEP(src);
Tensor3D dst = CONVERT_TO_TENSOR3D_STRUCT(dst);
Vector idx = CONVERT_TO_VECTOR_STRUCT_NO_STEP(idx);
const unsigned int iidx = *((__global uint *)vector_offset(&idx, (int)(get_global_id(1))));
// Load data
#if VEC_SIZE == 1
float data = *((__global float *)tensor3D_offset(&src, get_global_id(0), iidx, get_global_id(2)));
#elif VEC_SIZE == 2
float2 data = vload2(0, (__global float *)tensor3D_offset(&src, get_global_id(0), iidx, get_global_id(2)));
#else // VEC_SIZE == 1
#error "vec_size of 1 and 2 are supported"
#endif // VEC_SIZE == 1
// Create result
#if VEC_SIZE == 1
float2 res = { data, 0 };
#elif VEC_SIZE == 2
float2 res = data;
#else // VEC_SIZE == 1
#error "vec_size of 1 and 2 are supported"
#endif // VEC_SIZE == 1
// Store result
#if defined(CONJ)
vstore2((float2)(res.s0, -res.s1), 0, (__global float *)dst.ptr);
#else // defined(CONJ)
vstore2(res, 0, (__global float *)dst.ptr);
#endif // defined(CONJ)
}
#endif // defined(VEC_SIZE)
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