COMPMID-1332: Implement Slice for CL

Change-Id: I0dbc4fd7f640d31daa1970eb3da0e941cb771f2b
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/146145
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/runtime/CL/functions/CLSlice.cpp b/src/runtime/CL/functions/CLSlice.cpp
new file mode 100644
index 0000000000..bef7eca71c
--- /dev/null
+++ b/src/runtime/CL/functions/CLSlice.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2018 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 "arm_compute/runtime/CL/functions/CLSlice.h"
+
+#include "arm_compute/core/CL/ICLTensor.h"
+#include "arm_compute/core/CL/kernels/CLStridedSliceKernel.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/core/utils/helpers/tensor_transform.h"
+#include "support/ToolchainSupport.h"
+
+namespace arm_compute
+{
+void CLSlice::configure(const ICLTensor *input, ICLTensor *output, const Coordinates &starts, const Coordinates &ends)
+{
+    ARM_COMPUTE_ERROR_ON_NULLPTR(input);
+
+    // Get absolute end coordinates
+    const Coordinates ends_abs = arm_compute::helpers::tensor_transform::slice_absolute_end_coords(input->info()->tensor_shape(), ends);
+
+    auto k = arm_compute::support::cpp14::make_unique<CLStridedSliceKernel>();
+    k->configure(input, output, starts, ends_abs, BiStrides(), 0, 0, 0);
+    _kernel = std::move(k);
+}
+
+Status CLSlice::validate(const ITensorInfo *input, const ITensorInfo *output, const Coordinates &starts, const Coordinates &ends)
+{
+    ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input);
+
+    // Check start dimensions for being non-negative
+    ARM_COMPUTE_RETURN_ERROR_ON(std::any_of(starts.cbegin(), starts.cbegin() + starts.num_dimensions(), [](int i)
+    {
+        return i < 0;
+    }));
+
+    // Get absolute end coordinates
+    const Coordinates ends_abs = arm_compute::helpers::tensor_transform::slice_absolute_end_coords(input->tensor_shape(), ends);
+
+    return CLStridedSliceKernel::validate(input, output, starts, ends_abs, BiStrides(), 0, 0, 0);
+}
+} // namespace arm_compute