1 files changed, 33 insertions, 8 deletions

diff --git a/src/runtime/NEON/functions/NEFlattenLayer.cpp b/src/runtime/NEON/functions/NEFlattenLayer.cpp
index c5aa162f0a..56db2be3fa 100644
--- a/src/runtime/NEON/functions/NEFlattenLayer.cpp
+++ b/src/runtime/NEON/functions/NEFlattenLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020 Arm Limited.
+ * Copyright (c) 2017-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -24,31 +24,56 @@
 #include "arm_compute/runtime/NEON/functions/NEFlattenLayer.h"
 
 #include "arm_compute/core/TensorInfo.h"
-#include "arm_compute/core/Validate.h"
 #include "arm_compute/core/utils/misc/ShapeCalculator.h"
+#include "arm_compute/core/Validate.h"
+
 #include "src/core/helpers/AutoConfiguration.h"
+#include "src/cpu/operators/CpuFlatten.h"
 
 namespace arm_compute
 {
+struct NEFlattenLayer::Impl
+{
+    const ITensor                   *src{nullptr};
+    ITensor                         *dst{nullptr};
+    std::unique_ptr<cpu::CpuFlatten> op{nullptr};
+};
+
+NEFlattenLayer::NEFlattenLayer() : _impl(std::make_unique<Impl>())
+{
+}
+NEFlattenLayer::NEFlattenLayer(NEFlattenLayer &&)            = default;
+NEFlattenLayer &NEFlattenLayer::operator=(NEFlattenLayer &&) = default;
+NEFlattenLayer::~NEFlattenLayer()                            = default;
+
 void NEFlattenLayer::configure(const ITensor *input, ITensor *output)
 {
     ARM_COMPUTE_ERROR_ON_NULLPTR(input, output);
-    auto_init_if_empty(*output->info(), input->info()->clone()->set_tensor_shape(misc::shape_calculator::compute_flatten_shape(input->info())));
-    _reshape.configure(input, output);
+    _impl->src = input;
+    _impl->dst = output;
+    auto_init_if_empty(*output->info(), input->info()->clone()->set_tensor_shape(
+                                            misc::shape_calculator::compute_flatten_shape(input->info())));
+
+    _impl->op = std::make_unique<cpu::CpuFlatten>();
+    _impl->op->configure(_impl->src->info(), _impl->dst->info());
 }
 
 Status NEFlattenLayer::validate(const ITensorInfo *input, const ITensorInfo *output)
 {
     // Checks performed when output is configured
-    if(output->total_size() != 0)
+    if (output->total_size() != 0)
     {
-        const TensorInfo tensor_info_output = input->clone()->set_tensor_shape(misc::shape_calculator::compute_flatten_shape(input));
+        const TensorInfo tensor_info_output =
+            input->clone()->set_tensor_shape(misc::shape_calculator::compute_flatten_shape(input));
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(output, &tensor_info_output);
     }
-    return NEReshapeLayer::validate(input, output);
+    return cpu::CpuFlatten::validate(input, output);
 }
 void NEFlattenLayer::run()
 {
-    _reshape.run();
+    ITensorPack pack;
+    pack.add_tensor(TensorType::ACL_SRC, _impl->src);
+    pack.add_tensor(TensorType::ACL_DST, _impl->dst);
+    _impl->op->run(pack);
 }
 } // namespace arm_compute