[Spec] Implementation of Reverse:v1 (#3536)

src/ngraph/op/reverse.cpp

@@ -18,6 +18,7 @@
 #include <sstream>
 
 #include "ngraph/function.hpp"
+#include "ngraph/op/constant.hpp"
 #include "ngraph/op/reverse.hpp"
 
 using namespace std;
@@ -34,8 +35,8 @@ op::Reverse::Reverse(const Output<Node>& arg, const AxisSet& reversed_axes)
 
 void op::Reverse::validate_and_infer_types()
 {
-    auto input_shape = get_input_partial_shape(0);
-    Dimension input_rank = input_shape.rank();
+    const auto input_shape = get_input_partial_shape(0);
+    const Dimension input_rank = input_shape.rank();
 
     if (input_rank.is_static())
     {
@@ -69,3 +70,127 @@ void op::Reverse::generate_adjoints(autodiff::Adjoints& adjoints, const NodeVect
 
     adjoints.add_delta(x, make_shared<op::Reverse>(delta, m_reversed_axes));
 }
+
+constexpr NodeTypeInfo op::v1::Reverse::type_info;
+
+op::v1::Reverse::Reverse(const Output<Node>& data,
+                         const Output<Node>& reversed_axes,
+                         const std::string& mode)
+    : Op({data, reversed_axes})
+    , m_mode{mode_from_string(mode)}
+{
+    constructor_validate_and_infer_types();
+}
+
+op::v1::Reverse::Reverse(const Output<Node>& data,
+                         const Output<Node>& reversed_axes,
+                         const Mode mode)
+    : Op({data, reversed_axes})
+    , m_mode{mode}
+{
+    constructor_validate_and_infer_types();
+}
+
+void op::v1::Reverse::validate_and_infer_types()
+{
+    if (m_mode == Mode::MASK)
+    {
+        NODE_VALIDATION_CHECK(this,
+                              get_input_element_type(1) == element::boolean,
+                              "In 'mask' mode the second input must contain boolean values.");
+    }
+
+    const auto input_shape = get_input_partial_shape(0);
+    const auto input_rank = input_shape.rank();
+
+    const auto rev_axes_shape = get_input_partial_shape(1);
+    const auto rev_axes_rank = rev_axes_shape.rank();
+
+    if (rev_axes_rank.is_static())
+    {
+        NODE_VALIDATION_CHECK(this,
+                              static_cast<size_t>(rev_axes_rank) == 1,
+                              "The reversed_axes input must be a 1D tensor (got ",
+                              static_cast<size_t>(rev_axes_rank),
+                              ").");
+
+        if (m_mode == Mode::MASK)
+        {
+            if (input_rank.is_static() && rev_axes_shape[0].is_static())
+            {
+                const auto rev_axes_mask_elems_count = static_cast<size_t>(rev_axes_shape[0]);
+                NODE_VALIDATION_CHECK(this,
+                                      rev_axes_mask_elems_count == static_cast<size_t>(input_rank),
+                                      "The number of elements in the reversed_axes tensor (",
+                                      rev_axes_mask_elems_count,
+                                      ") must match the input data tensor rank (",
+                                      static_cast<size_t>(input_rank),
+                                      ") in 'mask' mode.");
+            }
+        }
+    }
+
+    if (input_rank.is_static())
+    {
+        const auto rank = static_cast<size_t>(input_rank);
+        const auto rev_axes_node = input_value(1).get_node_shared_ptr();
+
+        if (rev_axes_node->is_constant())
+        {
+            const auto rev_axes_constant = dynamic_pointer_cast<op::Constant>(rev_axes_node);
+
+            if (m_mode == Mode::INDEX)
+            {
+                const AxisSet rev_axes = rev_axes_constant->get_axis_set_val();
+
+                NODE_VALIDATION_CHECK(this,
+                                      rev_axes.size() <= rank,
+                                      "Too many axes(",
+                                      rev_axes,
+                                      ") have been provided for given input shape(",
+                                      input_shape,
+                                      ").");
+
+                bool all_axes_in_range = all_of(rev_axes.begin(),
+                                                rev_axes.end(),
+                                                [&rank](const size_t axis) { return axis < rank; });
+
+                NODE_VALIDATION_CHECK(this,
+                                      all_axes_in_range,
+                                      "Some of the provided axes (",
+                                      rev_axes,
+                                      ") are out of bounds (input rank: ",
+                                      static_cast<size_t>(input_rank),
+                                      ").");
+            }
+        }
+    }
+
+    set_output_type(0, get_input_element_type(0), input_shape);
+}
+
+shared_ptr<Node> op::v1::Reverse::copy_with_new_args(const NodeVector& new_args) const
+{
+    check_new_args_count(this, new_args);
+    return make_shared<op::v1::Reverse>(new_args.at(0), new_args.at(1), m_mode);
+}
+
+void op::v1::Reverse::generate_adjoints(autodiff::Adjoints& adjoints, const NodeVector& deltas)
+{
+    const auto delta = deltas.at(0);
+
+    const auto x = input_value(0);
+    const auto reversed_axes = input_value(1);
+
+    adjoints.add_delta(x, make_shared<op::v1::Reverse>(delta, reversed_axes, m_mode));
+}
+
+op::v1::Reverse::Mode op::v1::Reverse::mode_from_string(const std::string& mode) const
+{
+    static const std::map<std::string, Mode> allowed_values = {{"index", Mode::INDEX},
+                                                               {"mask", Mode::MASK}};
+
+    NODE_VALIDATION_CHECK(this, allowed_values.count(mode) > 0, "Invalid 'mode' value passed in.");
+
+    return allowed_values.at(mode);
+}

src/ngraph/op/reverse.hpp

@@ -77,5 +77,59 @@ namespace ngraph
 
             AxisSet m_reversed_axes;
         };
+
+        namespace v1
+        {
+            class Reverse : public Op
+            {
+            public:
+                enum class Mode
+                {
+                    INDEX,
+                    MASK
+                };
+
+                NGRAPH_API
+                static constexpr NodeTypeInfo type_info{"Reverse", 1};
+                const NodeTypeInfo& get_type_info() const override { return type_info; }
+                Reverse() = default;
+                /// \brief Constructs a reverse operation.
+                ///
+                /// \param data The input tensor, some of whose axes are to be reversed.
+                /// \param reversed_axes The axes to reverse in a form of a set of indices or
+                /// boolean mask.
+                /// \param mode The way reversed_axes should be interpreted - a set or a mask.
+                Reverse(const Output<Node>& data,
+                        const Output<Node>& reversed_axes,
+                        const std::string& mode);
+
+                Reverse(const Output<Node>& data,
+                        const Output<Node>& reversed_axes,
+                        const Mode mode);
+
+                void validate_and_infer_types() override;
+
+                virtual std::shared_ptr<Node>
+                    copy_with_new_args(const NodeVector& new_args) const override;
+
+                /// \return The second input data interpretation mode.
+                Mode get_mode() const { return m_mode; }
+                void set_mode(const Mode mode) { m_mode = mode; }
+                virtual size_t get_version() const override { return 1; }
+            protected:
+                virtual void generate_adjoints(autodiff::Adjoints& adjoints,
+                                               const NodeVector& deltas) override;
+
+                Mode mode_from_string(const std::string& mode) const;
+
+                /// \brief Indicates how the values from the second input should be interpreted.
+                ///
+                /// The second input can contain a set of indices pointing to axes in the data
+                /// tensor shape.
+                /// Alternatively it can contain a boolean mask that indicates which axes should be
+                /// reversed.
+                Mode m_mode;
+            };
+        }
     }
 }

src/ngraph/pass/opset1_upgrade.cpp

@@ -24,6 +24,7 @@
 #include "ngraph/op/product.hpp"
 #include "ngraph/op/reduce_prod.hpp"
 #include "ngraph/op/reduce_sum.hpp"
+#include "ngraph/op/reverse.hpp"
 #include "ngraph/op/softmax.hpp"
 #include "ngraph/op/sum.hpp"
 
@@ -237,6 +238,25 @@ bool pass::Opset1Upgrade::run_on_node(shared_ptr<Node> node)
         modified = true;
         break;
     }
+    case OP_TYPEID::Reverse:
+    {
+        // creates a Constant node from the v0::Reverse reversed_axes attribute
+        // and uses it as the second input of v1::Reverse
+        const auto reverse_v0 = dynamic_cast<const op::Reverse*>(node.get());
+        const auto reversed_axes = reverse_v0->get_reversed_axes();
+
+        const auto reversed_axes_constant = op::Constant::create(
+            element::i64, Shape{reversed_axes.size()}, reversed_axes.to_vector());
+
+        const auto reverse_v1 = make_shared<op::v1::Reverse>(node->input(0).get_source_output(),
+                                                             reversed_axes_constant,
+                                                             op::v1::Reverse::Mode::INDEX);
+
+        replace_node(node, reverse_v1);
+        modified = true;
+
+        break;
+    }
     case OP_TYPEID::Softmax:
     {
         auto tmp = dynamic_cast<const op::v0::Softmax*>(node.get());

src/ngraph/serializer.cpp

@@ -1897,8 +1897,18 @@ shared_ptr<Node> JSONDeserializer::deserialize_node(json node_js)
         }
         case OP_TYPEID::Reverse:
         {
-            auto reversed_axes = deserialize_axis_set(node_js.at("reversed_axes"));
-            node = make_shared<op::Reverse>(args[0], reversed_axes);
+            if (op_version == 0)
+            {
+                const auto reversed_axes = deserialize_axis_set(node_js.at("reversed_axes"));
+                node = make_shared<op::Reverse>(args[0], reversed_axes);
+                break;
+            }
+            else if (op_version == 1)
+            {
+                const auto mode = node_js.at("mode").get<op::v1::Reverse::Mode>();
+                node = make_shared<op::v1::Reverse>(args[0], args[1], mode);
+                break;
+            }
             break;
         }
         case OP_TYPEID::ReverseSequence:
@@ -3071,8 +3081,18 @@ json JSONSerializer::serialize_node(const Node& n)
     }
     case OP_TYPEID::Reverse:
     {
-        auto tmp = dynamic_cast<const op::Reverse*>(&n);
-        node["reversed_axes"] = serialize_axis_set(tmp->get_reversed_axes());
+        if (op_version == 0)
+        {
+            const auto tmp = dynamic_cast<const op::Reverse*>(&n);
+            node["reversed_axes"] = serialize_axis_set(tmp->get_reversed_axes());
+            break;
+        }
+        else if (op_version == 1)
+        {
+            const auto tmp = dynamic_cast<const op::v1::Reverse*>(&n);
+            node["mode"] = tmp->get_mode();
+            break;
+        }
         break;
     }
     case OP_TYPEID::ReverseSequence:

test/CMakeLists.txt

@@ -69,12 +69,12 @@ set(SRC
     node_input_output.cpp
     nop_elimination.cpp
     op.cpp
-    opset_pass/sum_opset_pass.cpp
-    opset_pass/product_opset_pass.cpp
-    opset_pass/softmax_opset_pass.cpp
-    opset_pass/softmax_opset_pass.cpp
     opset_pass/gather_opset_pass.cpp
     opset_pass/pad_opset_pass.cpp
+    opset_pass/product_opset_pass.cpp
+    opset_pass/reverse_opset_pass.cpp
+    opset_pass/softmax_opset_pass.cpp
+    opset_pass/sum_opset_pass.cpp
     opset_pass/poolings_opset_pass.cpp
     partial_shape.cpp
     pass.cpp

test/backend/reverse.in.cpp

@@ -382,3 +382,41 @@ NGRAPH_TEST(${BACKEND_NAME}, reverse_3d_012)
         read_vector<float>(result),
         MIN_FLOAT_TOLERANCE_BITS));
 }
+
+NGRAPH_TEST(${BACKEND_NAME}, reverse_v1_incorrect_rev_axes_rank_index_mode)
+{
+    const auto Data = make_shared<op::Parameter>(element::f32, Shape{2, 2, 2});
+    const auto Rev_Axes = make_shared<op::Parameter>(element::i64, Shape{1, 1}); // correct: 1D
+
+    EXPECT_THROW(make_shared<Function>(
+                     make_shared<op::v1::Reverse>(Data, Rev_Axes, op::v1::Reverse::Mode::INDEX),
+                     ParameterVector{Data, Rev_Axes}),
+                 ngraph::NodeValidationFailure);
+}
+
+NGRAPH_TEST(${BACKEND_NAME}, reverse_v1_incorrect_rev_axes_elems_mask_mode)
+{
+    const auto Data = make_shared<op::Parameter>(element::f32, Shape{2, 2, 2});
+    const auto Rev_Axes = make_shared<op::Parameter>(element::boolean, Shape{2}); // correct: 3
+
+    EXPECT_THROW(make_shared<op::v1::Reverse>(Data, Rev_Axes, op::v1::Reverse::Mode::MASK),
+                 ngraph::NodeValidationFailure);
+}
+
+NGRAPH_TEST(${BACKEND_NAME}, reverse_v1_axes_out_of_bounds)
+{
+    const auto Data = make_shared<op::Parameter>(element::f32, Shape{2, 2, 2});
+    const auto Rev_Axes = op::Constant::create(element::i64, Shape{2}, {1, 10});
+
+    EXPECT_THROW(make_shared<op::v1::Reverse>(Data, Rev_Axes, op::v1::Reverse::Mode::INDEX),
+                 ngraph::NodeValidationFailure);
+}
+
+NGRAPH_TEST(${BACKEND_NAME}, reverse_v1_too_many_axes)
+{
+    const auto Data = make_shared<op::Parameter>(element::f32, Shape{2, 2, 2});
+    const auto Rev_Axes = op::Constant::create(element::i64, Shape{4}, {0, 1, 2, 3});
+
+    EXPECT_THROW(make_shared<op::v1::Reverse>(Data, Rev_Axes, op::v1::Reverse::Mode::INDEX),
+                 ngraph::NodeValidationFailure);
+}

test/opset_pass/reverse_opset_pass.cpp

+//*****************************************************************************
+// Copyright 2017-2019 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//*****************************************************************************
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#include "ngraph/ngraph.hpp"
+#include "ngraph/pass/manager.hpp"
+#include "ngraph/pass/opset1_upgrade.hpp"
+#include "util/type_prop.hpp"
+
+using namespace std;
+using namespace ngraph;
+
+TEST(serialize, opset1_reverse_upgrade)
+{
+    const auto data = make_shared<op::Parameter>(element::f32, Shape{2, 2, 2});
+    const AxisSet reverse_axes{1, 2};
+
+    const auto reverse_v0 = make_shared<op::Reverse>(data, reverse_axes);
+    const auto result = make_shared<op::Result>(reverse_v0);
+    auto f = make_shared<Function>(ResultVector{result}, ParameterVector{data});
+
+    ngraph::pass::Manager pass_manager;
+    pass_manager.register_pass<pass::Opset1Upgrade>();
+    pass_manager.run_passes(f);
+
+    const auto pass_replacement_node =
+        f->get_result()->input(0).get_source_output().get_node_shared_ptr();
+    const auto reverse_v1 = static_pointer_cast<op::v1::Reverse>(pass_replacement_node);
+
+    EXPECT_EQ(reverse_v1->get_mode(), op::v1::Reverse::Mode::INDEX);
+    EXPECT_EQ(reverse_v1->description(), "Reverse");
+    EXPECT_EQ(reverse_v1->get_version(), 1);
+
+    const auto& rev_axes_input_shape = reverse_v1->get_input_shape(1);
+    // should match the number of elements of v0::Reverse reverse_axes attribute
+    EXPECT_EQ(rev_axes_input_shape, Shape{2});
+}

test/serialize.cpp

@@ -343,15 +343,15 @@ TEST(serialize, non_zero_node_output)
 
 TEST(serialize, opset1_softmax)
 {
-    auto arg = make_shared<op::Parameter>(element::f32, Shape{10});
-    auto softmax = make_shared<op::v1::Softmax>(arg, 0);
-    auto result = make_shared<op::Result>(softmax);
-    auto f = make_shared<Function>(ResultVector{result}, ParameterVector{arg});
+    const auto arg = make_shared<op::Parameter>(element::f32, Shape{10});
+    const auto softmax = make_shared<op::v1::Softmax>(arg, 0);
+    const auto result = make_shared<op::Result>(softmax);
+    const auto f = make_shared<Function>(ResultVector{result}, ParameterVector{arg});
     string s = serialize(f);
 
     shared_ptr<Function> g = deserialize(s);
-    auto g_result = g->get_results().at(0);
-    auto g_softmax = g_result->input(0).get_source_output().get_node_shared_ptr();
+    const auto g_result = g->get_results().at(0);
+    const auto g_softmax = g_result->input(0).get_source_output().get_node_shared_ptr();
 
     EXPECT_EQ(g_softmax->description(), "Softmax");
     EXPECT_EQ(g_softmax->get_version(), 1);