COMPMID-1716: CL Comparison operations

Adds support for Equal,NotEqual,Less,LessEqual,Greater,GreaterEqual

Change-Id: If0cdf4aae7f95c94709b195eee485f6663f45909

6 files changed, 579 insertions, 8 deletions

diff --git a/tests/datasets/BorderModeDataset.h b/tests/datasets/BorderModeDataset.h
index 3b8a08ce61..78df2cc85f 100644
--- a/tests/datasets/BorderModeDataset.h
+++ b/tests/datasets/BorderModeDataset.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -29,13 +29,6 @@
 
 #include "utils/TypePrinter.h"
 
-#include "arm_compute/core/TensorShape.h"
-#include "arm_compute/core/Types.h"
-
-#include "arm_compute/core/TensorShape.h"
-#include "arm_compute/core/Types.h"
-#include <vector>
-
 namespace arm_compute
 {
 namespace test
diff --git a/tests/datasets/ComparisonOperationsDataset.h b/tests/datasets/ComparisonOperationsDataset.h
new file mode 100644
index 0000000000..ff70418eb3
--- /dev/null
+++ b/tests/datasets/ComparisonOperationsDataset.h
@@ -0,0 +1,57 @@
+/*
+ * 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.
+ */
+#ifndef __ARM_COMPUTE_TEST_COMPARISON_OPERATIONS_DATASET_H__
+#define __ARM_COMPUTE_TEST_COMPARISON_OPERATIONS_DATASET_H__
+
+#include "arm_compute/core/Types.h"
+#include "tests/framework/datasets/ContainerDataset.h"
+
+#include "utils/TypePrinter.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace datasets
+{
+class ComparisonOperations final : public framework::dataset::ContainerDataset<std::vector<ComparisonOperation>>
+{
+public:
+    ComparisonOperations()
+        : ContainerDataset("ComparisonOperation",
+    {
+        ComparisonOperation::Equal,
+                            ComparisonOperation::NotEqual,
+                            ComparisonOperation::Greater,
+                            ComparisonOperation::GreaterEqual,
+                            ComparisonOperation::Less,
+                            ComparisonOperation::LessEqual
+    })
+    {
+    }
+};
+} // namespace datasets
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_COMPARISON_OPERATIONS_DATASET_H__ */
diff --git a/tests/validation/CL/Comparisons.cpp b/tests/validation/CL/Comparisons.cpp
new file mode 100644
index 0000000000..790a8b5c9d
--- /dev/null
+++ b/tests/validation/CL/Comparisons.cpp
@@ -0,0 +1,180 @@
+/*
+ * 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/core/Types.h"
+#include "arm_compute/runtime/CL/CLTensor.h"
+#include "arm_compute/runtime/CL/CLTensorAllocator.h"
+#include "arm_compute/runtime/CL/functions/CLComparison.h"
+#include "tests/CL/CLAccessor.h"
+#include "tests/PaddingCalculator.h"
+#include "tests/datasets/ComparisonOperationsDataset.h"
+#include "tests/datasets/ShapeDatasets.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Macros.h"
+#include "tests/framework/datasets/Datasets.h"
+#include "tests/validation/Validation.h"
+#include "tests/validation/fixtures/ComparisonFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace
+{
+const auto configure_dataset = combine(framework::dataset::concat(datasets::SmallShapes(), datasets::LargeShapes()),
+                                       framework::dataset::make("DataType", { DataType::QASYMM8, DataType::F16, DataType::F32 }));
+
+const auto run_small_dataset = combine(datasets::ComparisonOperations(), datasets::SmallShapes());
+const auto run_large_dataset = combine(datasets::ComparisonOperations(), datasets::LargeShapes());
+
+} // namespace
+
+TEST_SUITE(CL)
+TEST_SUITE(Comparison)
+
+// *INDENT-OFF*
+// clang-format off
+DATA_TEST_CASE(Validate, framework::DatasetMode::ALL, zip(zip(zip(
+        framework::dataset::make("Input1Info", { TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32), // Invalid output type
+                                                 TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32), // Mismatching input types
+                                                 TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32), // Window shrink
+                                                 TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32), // Mismatching shapes
+                                                 TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32),
+        }),
+        framework::dataset::make("Input2Info",{ TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32),
+                                                TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::S32),
+                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::F32),
+                                                TensorInfo(TensorShape(48U, 11U, 2U), 1, DataType::F32),
+                                                TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32),
+        })),
+        framework::dataset::make("OutputInfo",{ TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::F32),
+                                                TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::U8),
+                                                TensorInfo(TensorShape(27U, 13U, 2U), 1, DataType::U8),
+                                                TensorInfo(TensorShape(48U, 11U, 2U), 1, DataType::U8),
+                                                TensorInfo(TensorShape(32U, 13U, 2U), 1, DataType::U8),
+        })),
+        framework::dataset::make("Expected", { false, false, false, false, true})),
+        input1_info, input2_info, output_info, expected)
+{
+    Status s = CLComparison::validate(&input1_info.clone()->set_is_resizable(false),
+                                      &input2_info.clone()->set_is_resizable(false),
+                                      &output_info.clone()->set_is_resizable(false),
+                                      ComparisonOperation::Equal);
+    ARM_COMPUTE_EXPECT(bool(s) == expected, framework::LogLevel::ERRORS);
+}
+// clang-format on
+// *INDENT-ON*
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, configure_dataset,
+               shape, data_type)
+{
+    // Create tensors
+    CLTensor ref_src1 = create_tensor<CLTensor>(shape, data_type);
+    CLTensor ref_src2 = create_tensor<CLTensor>(shape, data_type);
+    CLTensor dst      = create_tensor<CLTensor>(shape, DataType::U8);
+
+    // Create and Configure function
+    CLComparison compare;
+    compare.configure(&ref_src1, &ref_src2, &dst, ComparisonOperation::Equal);
+
+    // Validate valid region
+    const ValidRegion valid_region = shape_to_valid_region(shape);
+    validate(dst.info()->valid_region(), valid_region);
+
+    const int num_elems_processed_per_iteration = 16 / ref_src1.info()->element_size();
+
+    // Validate padding
+    const PaddingSize padding = PaddingCalculator(shape.x(), num_elems_processed_per_iteration).required_padding();
+    validate(ref_src1.info()->padding(), padding);
+    validate(ref_src2.info()->padding(), padding);
+    validate(dst.info()->padding(), padding);
+}
+
+template <typename T>
+using CLComparisonFixture = ComparisonValidationFixture<CLTensor, CLAccessor, CLComparison, T>;
+
+TEST_SUITE(Float)
+TEST_SUITE(FP16)
+FIXTURE_DATA_TEST_CASE(RunSmall,
+                       CLComparisonFixture<half>,
+                       framework::DatasetMode::PRECOMMIT,
+                       combine(run_small_dataset, framework::dataset::make("DataType", DataType::F16)))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
+}
+FIXTURE_DATA_TEST_CASE(RunLarge,
+                       CLComparisonFixture<half>,
+                       framework::DatasetMode::NIGHTLY,
+                       combine(run_large_dataset, framework::dataset::make("DataType", DataType::F16)))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
+}
+TEST_SUITE_END() // FP16
+
+TEST_SUITE(FP32)
+FIXTURE_DATA_TEST_CASE(RunSmall,
+                       CLComparisonFixture<float>,
+                       framework::DatasetMode::PRECOMMIT,
+                       combine(run_small_dataset, framework::dataset::make("DataType", DataType::F32)))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
+}
+FIXTURE_DATA_TEST_CASE(RunLarge,
+                       CLComparisonFixture<float>,
+                       framework::DatasetMode::NIGHTLY,
+                       combine(run_large_dataset, framework::dataset::make("DataType", DataType::F32)))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
+}
+TEST_SUITE_END() // FP32
+TEST_SUITE_END() // Float
+
+template <typename T>
+using CLComparisonQuantizedFixture = ComparisonValidationQuantizedFixture<CLTensor, CLAccessor, CLComparison, T>;
+
+TEST_SUITE(Quantized)
+TEST_SUITE(QASYMM8)
+FIXTURE_DATA_TEST_CASE(RunSmall,
+                       CLComparisonQuantizedFixture<uint8_t>,
+                       framework::DatasetMode::PRECOMMIT,
+                       combine(combine(combine(run_small_dataset, framework::dataset::make("DataType", DataType::QASYMM8)),
+                                       framework::dataset::make("QuantizationInfo", { QuantizationInfo(5.f / 255.f, 20) })),
+                               framework::dataset::make("QuantizationInfo", { QuantizationInfo(2.f / 255.f, 10) })))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
+}
+TEST_SUITE_END()
+TEST_SUITE_END()
+
+TEST_SUITE_END() // Comparison
+TEST_SUITE_END() // CL
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/fixtures/ComparisonFixture.h b/tests/validation/fixtures/ComparisonFixture.h
new file mode 100644
index 0000000000..b2fe42de26
--- /dev/null
+++ b/tests/validation/fixtures/ComparisonFixture.h
@@ -0,0 +1,152 @@
+/*
+ * 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.
+ */
+#ifndef ARM_COMPUTE_TEST_COMPARISON_FIXTURE
+#define ARM_COMPUTE_TEST_COMPARISON_FIXTURE
+
+#include "arm_compute/core/TensorShape.h"
+#include "arm_compute/core/Types.h"
+#include "tests/AssetsLibrary.h"
+#include "tests/Globals.h"
+#include "tests/IAccessor.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Fixture.h"
+#include "tests/validation/Helpers.h"
+#include "tests/validation/reference/Comparisons.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
+class ComparisonValidationGenericFixture : public framework::Fixture
+{
+public:
+    template <typename...>
+    void setup(ComparisonOperation op, const TensorShape &shape0, const TensorShape &shape1, DataType data_type, QuantizationInfo qinfo0, QuantizationInfo qinfo1)
+    {
+        _target    = compute_target(op, shape0, shape1, data_type, qinfo0, qinfo1);
+        _reference = compute_reference(op, shape0, shape1, data_type, qinfo0, qinfo1);
+    }
+
+protected:
+    template <typename U>
+    void fill(U &&tensor, int i)
+    {
+        library->fill_tensor_uniform(tensor, i);
+    }
+
+    TensorType compute_target(ComparisonOperation op,
+                              const TensorShape &shape0, const TensorShape &shape1, DataType data_type,
+                              QuantizationInfo qinfo0, QuantizationInfo qinfo1)
+    {
+        // Create tensors
+        TensorType ref_src1 = create_tensor<TensorType>(shape0, data_type, 1, qinfo0);
+        TensorType ref_src2 = create_tensor<TensorType>(shape1, data_type, 1, qinfo1);
+        TensorType dst      = create_tensor<TensorType>(TensorShape::broadcast_shape(shape0, shape1), DataType::U8);
+
+        // Create and configure function
+        FunctionType comp_op;
+        comp_op.configure(&ref_src1, &ref_src2, &dst, op);
+
+        ARM_COMPUTE_EXPECT(ref_src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(ref_src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Allocate tensors
+        ref_src1.allocator()->allocate();
+        ref_src2.allocator()->allocate();
+        dst.allocator()->allocate();
+
+        ARM_COMPUTE_EXPECT(!ref_src1.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!ref_src2.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Fill tensors
+        fill(AccessorType(ref_src1), 0);
+        fill(AccessorType(ref_src2), 1);
+
+        // Compute function
+        comp_op.run();
+
+        return dst;
+    }
+
+    SimpleTensor<uint8_t> compute_reference(ComparisonOperation op,
+                                            const TensorShape &shape0, const TensorShape &shape1, DataType data_type,
+                                            QuantizationInfo qinfo0, QuantizationInfo qinfo1)
+    {
+        // Create reference
+        SimpleTensor<T> ref_src1{ shape0, data_type, 1, qinfo0 };
+        SimpleTensor<T> ref_src2{ shape1, data_type, 1, qinfo1 };
+
+        // Fill reference
+        fill(ref_src1, 0);
+        fill(ref_src2, 1);
+
+        return reference::compare<T>(op, ref_src1, ref_src2);
+    }
+
+    TensorType            _target{};
+    SimpleTensor<uint8_t> _reference{};
+};
+
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
+class ComparisonBroadcastValidationFixture : public ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>
+{
+public:
+    template <typename...>
+    void setup(ComparisonOperation op, const TensorShape &shape0, const TensorShape &shape1, DataType data_type)
+    {
+        ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>::setup(op, shape0, shape1, data_type, QuantizationInfo(), QuantizationInfo());
+    }
+};
+
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
+class ComparisonValidationFixture : public ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>
+{
+public:
+    template <typename...>
+    void setup(ComparisonOperation op, const TensorShape &shape, DataType data_type)
+    {
+        ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>::setup(op, shape, shape, data_type, QuantizationInfo(), QuantizationInfo());
+    }
+};
+
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
+class ComparisonValidationQuantizedFixture : public ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>
+{
+public:
+    template <typename...>
+    void setup(ComparisonOperation op, const TensorShape &shape, DataType data_type, QuantizationInfo qinfo0, QuantizationInfo qinfo1)
+
+    {
+        ComparisonValidationGenericFixture<TensorType, AccessorType, FunctionType, T>::setup(op, shape, shape, data_type, qinfo0, qinfo1);
+    }
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_COMPARISON_FIXTURE */
diff --git a/tests/validation/reference/Comparisons.cpp b/tests/validation/reference/Comparisons.cpp
new file mode 100644
index 0000000000..a83c365a22
--- /dev/null
+++ b/tests/validation/reference/Comparisons.cpp
@@ -0,0 +1,145 @@
+/*
+ * 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 "Comparisons.h"
+
+#include "arm_compute/core/Types.h"
+#include "tests/validation/Helpers.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+namespace
+{
+template <typename T>
+uint8_t compare_op(ComparisonOperation op, T src1, T src2)
+{
+    uint8_t result = 0;
+    switch(op)
+    {
+        case ComparisonOperation::Equal:
+            result = static_cast<uint8_t>(src1 == src2);
+            break;
+        case ComparisonOperation::NotEqual:
+            result = static_cast<uint8_t>(src1 != src2);
+            break;
+        case ComparisonOperation::GreaterEqual:
+            result = static_cast<uint8_t>(src1 >= src2);
+            break;
+        case ComparisonOperation::Greater:
+            result = static_cast<uint8_t>(src1 > src2);
+            break;
+        case ComparisonOperation::LessEqual:
+            result = static_cast<uint8_t>(src1 <= src2);
+            break;
+        case ComparisonOperation::Less:
+            result = static_cast<uint8_t>(src1 < src2);
+            break;
+        default:
+            ARM_COMPUTE_ERROR("Unsupported operation");
+    }
+    return (result != 0) ? 255 : 0;
+}
+
+template <size_t dim>
+struct BroadcastUnroll
+{
+    template <typename T>
+    static void unroll(ComparisonOperation    op,
+                       const SimpleTensor<T> &src1, const SimpleTensor<T> &src2, SimpleTensor<uint8_t> &dst,
+                       Coordinates &id_src1, Coordinates &id_src2, Coordinates &id_dst)
+    {
+        const bool src1_is_broadcast = (src1.shape()[dim - 1] != dst.shape()[dim - 1]);
+        const bool src2_is_broadcast = (src2.shape()[dim - 1] != dst.shape()[dim - 1]);
+
+        id_src1.set(dim - 1, 0);
+        id_src2.set(dim - 1, 0);
+        id_dst.set(dim - 1, 0);
+
+        for(size_t i = 0; i < dst.shape()[dim - 1]; ++i, ++id_dst[dim - 1])
+        {
+            BroadcastUnroll < dim - 1 >::unroll(op, src1, src2, dst, id_src1, id_src2, id_dst);
+
+            id_src1[dim - 1] += !src1_is_broadcast;
+            id_src2[dim - 1] += !src2_is_broadcast;
+        }
+    }
+};
+
+template <>
+struct BroadcastUnroll<0>
+{
+    template <typename T>
+    static void unroll(ComparisonOperation    op,
+                       const SimpleTensor<T> &src1, const SimpleTensor<T> &src2, SimpleTensor<uint8_t> &dst,
+                       Coordinates &id_src1, Coordinates &id_src2, Coordinates &id_dst)
+    {
+        dst[coord2index(dst.shape(), id_dst)] = compare_op(op, src1[coord2index(src1.shape(), id_src1)], src2[coord2index(src2.shape(), id_src2)]);
+    }
+};
+} // namespace
+
+template <typename T>
+SimpleTensor<uint8_t> compare(ComparisonOperation op, const SimpleTensor<T> &src1, const SimpleTensor<T> &src2)
+{
+    SimpleTensor<uint8_t> dst(TensorShape::broadcast_shape(src1.shape(), src2.shape()), DataType::U8);
+
+    Coordinates id_src1, id_src2, id_dst;
+    BroadcastUnroll<Coordinates::num_max_dimensions>::unroll(op, src1, src2, dst, id_src1, id_src2, id_dst);
+    return dst;
+}
+
+template <>
+SimpleTensor<uint8_t> compare(ComparisonOperation op, const SimpleTensor<uint8_t> &src1, const SimpleTensor<uint8_t> &src2)
+{
+    SimpleTensor<uint8_t> dst(TensorShape::broadcast_shape(src1.shape(), src2.shape()), DataType::U8);
+
+    if(src1.data_type() == DataType::QASYMM8)
+    {
+        SimpleTensor<float> src1_tmp = convert_from_asymmetric(src1);
+        SimpleTensor<float> src2_tmp = convert_from_asymmetric(src2);
+
+        Coordinates id_src1, id_src2, id_dst;
+        BroadcastUnroll<Coordinates::num_max_dimensions>::unroll(op, src1_tmp, src2_tmp, dst, id_src1, id_src2, id_dst);
+    }
+    else
+    {
+        // DataType::U8
+        Coordinates id_src1, id_src2, id_dst;
+        BroadcastUnroll<Coordinates::num_max_dimensions>::unroll(op, src1, src2, dst, id_src1, id_src2, id_dst);
+    }
+    return dst;
+}
+
+template SimpleTensor<uint8_t> compare(ComparisonOperation op, const SimpleTensor<half> &src1, const SimpleTensor<half> &src2);
+template SimpleTensor<uint8_t> compare(ComparisonOperation op, const SimpleTensor<float> &src1, const SimpleTensor<float> &src2);
+
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/reference/Comparisons.h b/tests/validation/reference/Comparisons.h
new file mode 100644
index 0000000000..4e054add32
--- /dev/null
+++ b/tests/validation/reference/Comparisons.h
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+#ifndef __ARM_COMPUTE_TEST_COMPARISONS_H__
+#define __ARM_COMPUTE_TEST_COMPARISONS_H__
+
+#include "tests/SimpleTensor.h"
+#include "tests/validation/Helpers.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<uint8_t> compare(ComparisonOperation op, const SimpleTensor<T> &src1, const SimpleTensor<T> &src2);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_COMPARISONS_H__ */