IVGCVSW-5401 Implement the FILL operator

 * Added FILL operator to TfLite ArmNN Delegate
 * Added unit tests

Signed-off-by: David Monahan <david.monahan@arm.com>
Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I335ef469ff773fa4305eb87f6e93ae9c03fc6997
diff --git a/delegate/src/test/FillTest.cpp b/delegate/src/test/FillTest.cpp
new file mode 100644
index 0000000..50f7f53
--- /dev/null
+++ b/delegate/src/test/FillTest.cpp
@@ -0,0 +1,221 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "FillTestHelper.hpp"
+
+#include <armnn_delegate.hpp>
+
+#include <flatbuffers/flatbuffers.h>
+#include <tensorflow/lite/schema/schema_generated.h>
+
+#include <doctest/doctest.h>
+
+namespace armnnDelegate
+{
+
+void Fill2dTest(std::vector<armnn::BackendId>& backends,
+               tflite::BuiltinOperator fillOperatorCode = tflite::BuiltinOperator_FILL,
+               float fill = 2.0f )
+{
+    std::vector<int32_t> inputShape { 2 };
+    std::vector<int32_t> tensorShape { 2, 2 };
+    std::vector<float> expectedOutputValues = { fill, fill,
+                                                fill, fill };
+
+    FillTest<float>(fillOperatorCode,
+                    ::tflite::TensorType_FLOAT32,
+                    backends,
+                    inputShape,
+                    tensorShape,
+                    expectedOutputValues,
+                    fill);
+}
+
+void Fill3dTest(std::vector<armnn::BackendId>& backends,
+               tflite::BuiltinOperator fillOperatorCode = tflite::BuiltinOperator_FILL,
+               float fill = 5.0f )
+{
+    std::vector<int32_t> inputShape { 3 };
+    std::vector<int32_t> tensorShape { 3, 3, 3 };
+    std::vector<float> expectedOutputValues = { fill, fill, fill,
+                                                fill, fill, fill,
+                                                fill, fill, fill,
+
+                                                fill, fill, fill,
+                                                fill, fill, fill,
+                                                fill, fill, fill,
+
+                                                fill, fill, fill,
+                                                fill, fill, fill,
+                                                fill, fill, fill };
+
+    FillTest<float>(fillOperatorCode,
+                    ::tflite::TensorType_FLOAT32,
+                    backends,
+                    inputShape,
+                    tensorShape,
+                    expectedOutputValues,
+                    fill);
+}
+
+void Fill4dTest(std::vector<armnn::BackendId>& backends,
+               tflite::BuiltinOperator fillOperatorCode = tflite::BuiltinOperator_FILL,
+               float fill = 3.0f )
+{
+    std::vector<int32_t> inputShape { 4 };
+    std::vector<int32_t> tensorShape { 2, 2, 4, 4 };
+    std::vector<float> expectedOutputValues = { fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill,
+                                                fill, fill, fill, fill };
+
+    FillTest<float>(fillOperatorCode,
+                    ::tflite::TensorType_FLOAT32,
+                    backends,
+                    inputShape,
+                    tensorShape,
+                    expectedOutputValues,
+                    fill);
+}
+
+void FillInt32Test(std::vector<armnn::BackendId>& backends,
+                  tflite::BuiltinOperator fillOperatorCode = tflite::BuiltinOperator_FILL,
+                  int32_t fill = 2 )
+{
+    std::vector<int32_t> inputShape { 2 };
+    std::vector<int32_t> tensorShape { 2, 2 };
+    std::vector<int32_t> expectedOutputValues = { fill, fill,
+                                                  fill, fill };
+
+    FillTest<int32_t>(fillOperatorCode,
+                      ::tflite::TensorType_INT32,
+                      backends,
+                      inputShape,
+                      tensorShape,
+                      expectedOutputValues,
+                      fill);
+}
+
+TEST_SUITE("Fill_CpuRefTests")
+{
+
+TEST_CASE ("Fill2d_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    Fill2dTest(backends);
+}
+
+TEST_CASE ("Fill3d_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill3d_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill4d_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    Fill4dTest(backends);
+}
+
+TEST_CASE ("FillInt32_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    FillInt32Test(backends);
+}
+
+}
+
+TEST_SUITE("Fill_CpuAccTests")
+{
+
+TEST_CASE ("Fill2d_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    Fill2dTest(backends);
+}
+
+TEST_CASE ("Fill3d_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill3d_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill4d_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    Fill4dTest(backends);
+}
+
+TEST_CASE ("FillInt32_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    FillInt32Test(backends);
+}
+
+}
+
+TEST_SUITE("Fill_GpuAccTests")
+{
+
+TEST_CASE ("Fill2d_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    Fill2dTest(backends);
+}
+
+TEST_CASE ("Fill3d_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill3d_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    Fill3dTest(backends);
+}
+
+TEST_CASE ("Fill4d_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    Fill4dTest(backends);
+}
+
+TEST_CASE ("FillInt32_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    FillInt32Test(backends);
+}
+
+}
+
+} // namespace armnnDelegate
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