diff options
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/helpers/WindowHelpers.cpp | 53 | ||||
-rw-r--r-- | src/core/helpers/WindowHelpers.h | 13 |
2 files changed, 65 insertions, 1 deletions
diff --git a/src/core/helpers/WindowHelpers.cpp b/src/core/helpers/WindowHelpers.cpp index 75ffb71b4b..fa152c9f58 100644 --- a/src/core/helpers/WindowHelpers.cpp +++ b/src/core/helpers/WindowHelpers.cpp @@ -1,5 +1,5 @@ /* -* Copyright (c) 2020-2021 Arm Limited. +* Copyright (c) 2020-2022 Arm Limited. * * SPDX-License-Identifier: MIT * @@ -231,4 +231,55 @@ Window calculate_max_window_horizontal(const ValidRegion &valid_region, const St return window; } + +std::pair<Window, size_t> calculate_squashed_or_max_window(const ITensorInfo &src0, const ITensorInfo &src1) +{ + const auto &shape0 = src0.tensor_shape(); + const auto &shape1 = src1.tensor_shape(); + const auto &strides0 = src0.strides_in_bytes(); + const auto &strides1 = src1.strides_in_bytes(); + const auto num_dimensions = std::max(src0.num_dimensions(), src1.num_dimensions()); + + Window win; + size_t split_dimension = Window::DimY; + size_t dim = 0; + + size_t squashed_bytes = src0.element_size(); + + // Try to squash the low dimensions together. + for(; dim < num_dimensions; ++dim) + { + if(shape0[dim] != shape1[dim] || strides0[dim] != squashed_bytes || strides1[dim] != squashed_bytes) + { + break; + } + + squashed_bytes *= shape0[dim]; + } + + if(dim == num_dimensions) + { + auto squashed_elements = squashed_bytes / src0.element_size(); + + split_dimension = Window::DimX; + + // The input tensors can be interpreted as 1D array. + win.set(0, Window::Dimension(0, squashed_elements, 1)); + + for(dim = 1; dim < Coordinates::num_max_dimensions; ++dim) + { + win.set(dim, Window::Dimension(0, 1, 1)); + } + } + else + { + // Generates the max window. + for(dim = 0; dim < Coordinates::num_max_dimensions; ++dim) + { + win.set(dim, Window::Dimension(0, std::max(shape0[dim], shape1[dim]), 1)); + } + } + + return std::make_pair(win, split_dimension); +} } // namespace arm_compute diff --git a/src/core/helpers/WindowHelpers.h b/src/core/helpers/WindowHelpers.h index 28c39ccd82..c9e5a135c0 100644 --- a/src/core/helpers/WindowHelpers.h +++ b/src/core/helpers/WindowHelpers.h @@ -176,6 +176,19 @@ inline Window calculate_max_enlarged_window(const ITensorInfo &info, const Steps return calculate_max_enlarged_window(info.valid_region(), steps, border_size); } +/** Calculate the squashed or maximum window for the given tensor shapes. + * + * If the tensor data resides continuously in the memory, the tensor can be interpreted + * as 1D array and all the dimensions can be squashed together into the x-dimension. + * Otherwise, generate the max window for the given tensor shapes. + * + * @param[in] src0 Tensor info object defining the shape of the first input tensor. + * @param[in] src1 Tensor info object defining the shape of the second input tensor. + * + * @return The squashed or maximum window the kernel can be executed on and the preferred split dimension. + */ +std::pair<Window, size_t> calculate_squashed_or_max_window(const ITensorInfo &src0, const ITensorInfo &src1); + /** Function to compute the shape of output and window for the given inputs * * @param[in] infos Input tensor informations |