Remove Compute Vision Neon support

Resolves COMPMID-4150

Change-Id: I316e8ab97de796666c71eadfde894715fcf4a1aa
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5141
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 0 insertions, 249 deletions

diff --git a/src/core/NEON/kernels/NEHistogramKernel.cpp b/src/core/NEON/kernels/NEHistogramKernel.cpp
deleted file mode 100644
index eddc3b29ab..0000000000
--- a/src/core/NEON/kernels/NEHistogramKernel.cpp
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * Copyright (c) 2016-2020 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 "src/core/NEON/kernels/NEHistogramKernel.h"
-
-#include "arm_compute/core/Error.h"
-#include "arm_compute/core/Helpers.h"
-#include "arm_compute/core/IDistribution1D.h"
-#include "arm_compute/core/ITensor.h"
-#include "arm_compute/core/TensorInfo.h"
-#include "arm_compute/core/Types.h"
-#include "arm_compute/core/Window.h"
-#include "src/core/helpers/AutoConfiguration.h"
-#include "src/core/helpers/WindowHelpers.h"
-
-#include <algorithm>
-#include <arm_neon.h>
-#include <array>
-
-namespace arm_compute
-{
-class Coordinates;
-
-inline void NEHistogramKernel::merge_histogram(uint32_t *global_hist, const uint32_t *local_hist, size_t bins)
-{
-    arm_compute::lock_guard<arm_compute::Mutex> lock(_hist_mtx);
-
-    const unsigned int v_end = (bins / 4) * 4;
-
-    for(unsigned int b = 0; b < v_end; b += 4)
-    {
-        const uint32x4_t tmp_global = vld1q_u32(global_hist + b);
-        const uint32x4_t tmp_local  = vld1q_u32(local_hist + b);
-        vst1q_u32(global_hist + b, vaddq_u32(tmp_global, tmp_local));
-    }
-
-    for(unsigned int b = v_end; b < bins; ++b)
-    {
-        global_hist[b] += local_hist[b];
-    }
-}
-
-NEHistogramKernel::NEHistogramKernel()
-    : _func(nullptr), _input(nullptr), _output(nullptr), _local_hist(nullptr), _window_lut(nullptr), _hist_mtx()
-{
-}
-
-void NEHistogramKernel::histogram_U8(Window win, const ThreadInfo &info)
-{
-    ARM_COMPUTE_ERROR_ON(_output->buffer() == nullptr);
-
-    const size_t          bins       = _output->num_bins();
-    const int32_t         offset     = _output->offset();
-    const uint32_t        offrange   = offset + _output->range();
-    const uint32_t *const w_lut      = _window_lut;
-    uint32_t *const       local_hist = _local_hist + info.thread_id * bins;
-
-    // Clear local_histogram
-    std::fill_n(local_hist, bins, 0);
-
-    auto update_local_hist = [&](uint8_t p)
-    {
-        if(offset <= p && p < offrange)
-        {
-            ++local_hist[w_lut[p]];
-        }
-    };
-
-    const int x_start = win.x().start();
-    const int x_end   = win.x().end();
-
-    // Handle X dimension manually to split into two loops
-    // First one will use vector operations, second one processes the left over
-    // pixels
-    win.set(Window::DimX, Window::Dimension(0, 1, 1));
-
-    Iterator input(_input, win);
-
-    // Calculate local histogram
-    execute_window_loop(win, [&](const Coordinates &)
-    {
-        int x = x_start;
-
-        // Vector loop
-        for(; x <= x_end - 8; x += 8)
-        {
-            const uint8x8_t pixels = vld1_u8(input.ptr() + x);
-
-            update_local_hist(vget_lane_u8(pixels, 0));
-            update_local_hist(vget_lane_u8(pixels, 1));
-            update_local_hist(vget_lane_u8(pixels, 2));
-            update_local_hist(vget_lane_u8(pixels, 3));
-            update_local_hist(vget_lane_u8(pixels, 4));
-            update_local_hist(vget_lane_u8(pixels, 5));
-            update_local_hist(vget_lane_u8(pixels, 6));
-            update_local_hist(vget_lane_u8(pixels, 7));
-        }
-
-        // Process leftover pixels
-        for(; x < x_end; ++x)
-        {
-            update_local_hist(input.ptr()[x]);
-        }
-    },
-    input);
-
-    // Merge histograms
-    merge_histogram(_output->buffer(), local_hist, bins);
-}
-
-void NEHistogramKernel::histogram_fixed_U8(Window win, const ThreadInfo &info)
-{
-    ARM_COMPUTE_UNUSED(info);
-    ARM_COMPUTE_ERROR_ON(_output->buffer() == nullptr);
-
-    std::array<uint32_t, _max_range_size> local_hist{ { 0 } };
-
-    const int x_start = win.x().start();
-    const int x_end   = win.x().end();
-
-    // Handle X dimension manually to split into two loops
-    // First one will use vector operations, second one processes the left over
-    // pixels
-    win.set(Window::DimX, Window::Dimension(0, 1, 1));
-
-    Iterator input(_input, win);
-
-    // Calculate local histogram
-    execute_window_loop(win, [&](const Coordinates &)
-    {
-        int x = x_start;
-
-        // Vector loop
-        for(; x <= x_end - 8; x += 8)
-        {
-            const uint8x8_t pixels = vld1_u8(input.ptr() + x);
-
-            ++local_hist[vget_lane_u8(pixels, 0)];
-            ++local_hist[vget_lane_u8(pixels, 1)];
-            ++local_hist[vget_lane_u8(pixels, 2)];
-            ++local_hist[vget_lane_u8(pixels, 3)];
-            ++local_hist[vget_lane_u8(pixels, 4)];
-            ++local_hist[vget_lane_u8(pixels, 5)];
-            ++local_hist[vget_lane_u8(pixels, 6)];
-            ++local_hist[vget_lane_u8(pixels, 7)];
-        }
-
-        // Process leftover pixels
-        for(; x < x_end; ++x)
-        {
-            ++local_hist[input.ptr()[x]];
-        }
-    },
-    input);
-
-    // Merge histograms
-    merge_histogram(_output->buffer(), local_hist.data(), _max_range_size);
-}
-
-void NEHistogramKernel::calculate_window_lut() const
-{
-    const int32_t  offset = _output->offset();
-    const size_t   bins   = _output->num_bins();
-    const uint32_t range  = _output->range();
-
-    std::fill_n(_window_lut, offset, 0);
-
-    for(unsigned int p = offset; p < _max_range_size; ++p)
-    {
-        _window_lut[p] = ((p - offset) * bins) / range;
-    }
-}
-
-void NEHistogramKernel::configure(const IImage *input, IDistribution1D *output, uint32_t *local_hist, uint32_t *window_lut)
-{
-    ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(input);
-    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
-    ARM_COMPUTE_ERROR_ON(nullptr == output);
-    ARM_COMPUTE_ERROR_ON(nullptr == local_hist);
-    ARM_COMPUTE_ERROR_ON(nullptr == window_lut);
-
-    _input      = input;
-    _output     = output;
-    _local_hist = local_hist;
-    _window_lut = window_lut;
-
-    //Check offset
-    ARM_COMPUTE_ERROR_ON_MSG(0 > _output->offset() || _output->offset() > static_cast<int32_t>(_max_range_size), "Offset is larger than the image value range.");
-
-    //Check range
-    ARM_COMPUTE_ERROR_ON_MSG(static_cast<int32_t>(_output->range()) > static_cast<int32_t>(_max_range_size) /* max range */, "Range larger than the image value range.");
-
-    // Calculate LUT
-    calculate_window_lut();
-
-    // Set appropriate function
-    _func = &NEHistogramKernel::histogram_U8;
-
-    Window win = calculate_max_window(*input->info(), Steps());
-
-    INEKernel::configure(win);
-}
-
-void NEHistogramKernel::configure(const IImage *input, IDistribution1D *output)
-{
-    ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(input);
-    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
-    ARM_COMPUTE_ERROR_ON(nullptr == output);
-
-    _input  = input;
-    _output = output;
-
-    // Set appropriate function
-    _func = &NEHistogramKernel::histogram_fixed_U8;
-
-    Window win = calculate_max_window(*input->info(), Steps());
-
-    INEKernel::configure(win);
-}
-
-void NEHistogramKernel::run(const Window &window, const ThreadInfo &info)
-{
-    ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
-    ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window);
-    ARM_COMPUTE_ERROR_ON(_func == nullptr);
-
-    (this->*_func)(window, info);
-}
-} // namespace arm_compute