Merge branch 'master' into arogowiec/lstm_fix

CONTRIB.md

 Contributor Guidelines
 ======================
 
-https://ngraph.nervanasys.com/docs/latest/project/code-contributor-README.html
+The latest version of this file can be found at: 
+
+https://ngraph.nervanasys.com/docs/latest/project/contribution-guide.html
 
 
 License

src/ngraph/CMakeLists.txt

@@ -142,6 +142,8 @@ set (SRC
     op/experimental/dyn_broadcast.hpp
     op/experimental/dyn_pad.cpp
     op/experimental/dyn_pad.hpp
+    op/experimental/dyn_replace_slice.cpp
+    op/experimental/dyn_replace_slice.hpp
     op/experimental/dyn_reshape.cpp
     op/experimental/dyn_reshape.hpp
     op/experimental/dyn_slice.cpp

src/ngraph/descriptor/tensor.cpp

@@ -46,6 +46,9 @@ descriptor::Tensor::Tensor(const element::Type& element_type,
 void descriptor::Tensor::set_tensor_type(const element::Type& element_type,
                                          const PartialShape& pshape)
 {
+    NGRAPH_CHECK(pshape.all_non_negative(),
+                 "set_tensor_type called on a PartialShape containing negative dimensions: ",
+                 pshape);
     if (pshape.is_static())
     {
         m_shape = pshape.to_shape();

src/ngraph/dimension.cpp

@@ -23,7 +23,7 @@
 
 using namespace ngraph;
 
-Dimension::Dimension(size_t dimension)
+Dimension::Dimension(int64_t dimension)
     : m_dimension(dimension)
 {
     if (dimension == s_dynamic_val)
@@ -40,7 +40,7 @@ std::ostream& ngraph::operator<<(std::ostream& str, const Dimension& dimension)
 {
     if (dimension.is_static())
     {
-        return (str << size_t(dimension));
+        return (str << int64_t(dimension));
     }
     else
     {
@@ -50,36 +50,36 @@ std::ostream& ngraph::operator<<(std::ostream& str, const Dimension& dimension)
 
 Dimension Dimension::operator+(const Dimension& dim) const
 {
-    return (is_static() && dim.is_static() ? m_dimension + size_t(dim) : Dimension::dynamic());
+    return (is_static() && dim.is_static() ? m_dimension + int64_t(dim) : Dimension::dynamic());
 }
 
 Dimension Dimension::operator-(const Dimension& dim) const
 {
-    return (is_static() && dim.is_static() ? m_dimension - size_t(dim) : Dimension::dynamic());
+    return (is_static() && dim.is_static() ? m_dimension - int64_t(dim) : Dimension::dynamic());
 }
 
 Dimension Dimension::operator*(const Dimension& dim) const
 {
     return ((is_static() && dim.is_static())
-                ? m_dimension * size_t(dim)
+                ? m_dimension * int64_t(dim)
                 : (is_static() && m_dimension == 0)
                       ? 0
-                      : (dim.is_static() && size_t(dim) == 0) ? 0 : Dimension::dynamic());
+                      : (dim.is_static() && int64_t(dim) == 0) ? 0 : Dimension::dynamic());
 }
 
 bool Dimension::compatible(const Dimension& d) const
 {
-    return (is_dynamic() || d.is_dynamic() || m_dimension == size_t(d));
+    return (is_dynamic() || d.is_dynamic() || m_dimension == int64_t(d));
 }
 
 bool Dimension::relaxes(const Dimension& d) const
 {
-    return (is_dynamic() || (d.is_static() && size_t(*this) == size_t(d)));
+    return (is_dynamic() || (d.is_static() && int64_t(*this) == int64_t(d)));
 }
 
 bool Dimension::refines(const Dimension& d) const
 {
-    return (d.is_dynamic() || (is_static() && size_t(d) == size_t(*this)));
+    return (d.is_dynamic() || (is_static() && int64_t(d) == int64_t(*this)));
 }
 
 bool Dimension::merge(Dimension& dst, const Dimension d1, const Dimension d2)
@@ -94,7 +94,7 @@ bool Dimension::merge(Dimension& dst, const Dimension d1, const Dimension d2)
         dst = d1;
         return true;
     }
-    else if (size_t(d1) != size_t(d2))
+    else if (int64_t(d1) != int64_t(d2))
     {
         return false;
     }
@@ -115,16 +115,16 @@ bool Dimension::broadcast_merge(Dimension& dst, const Dimension d1, const Dimens
     else if (d1.is_dynamic() || d2.is_dynamic())
     {
         // One static. Set dst to static size if >1
-        auto ds = d1.is_dynamic() ? size_t(d2) : size_t(d1);
+        auto ds = d1.is_dynamic() ? int64_t(d2) : int64_t(d1);
         dst = (ds > 1) ? ds : Dimension::dynamic();
         return true;
     }
     else
     {
         // Static sizes. Both match or one of them is 1.
-        if (size_t(d1) == size_t(d2) || size_t(d1) == 1 || size_t(d2) == 1)
+        if (int64_t(d1) == int64_t(d2) || int64_t(d1) == 1 || int64_t(d2) == 1)
         {
-            dst = std::max(size_t(d1), size_t(d2));
+            dst = std::max(int64_t(d1), int64_t(d2));
             return true;
         }
         else

src/ngraph/dimension.hpp

@@ -25,7 +25,7 @@ namespace ngraph
     /// \brief Class representing a dimension, which may be dynamic (undetermined until runtime),
     ///        in a shape or shape-like object.
     ///
-    /// Static dimensions may be implicitly converted from size_t. A dynamic dimension is
+    /// Static dimensions may be implicitly converted from int64_t. A dynamic dimension is
     /// constructed with Dimension() or Dimension::dynamic().
     ///
     /// XXX: THIS CLASS IS NOT IN USE YET AND THE ENTIRE DESIGN IS SUBJECT TO CHANGE.
@@ -36,7 +36,7 @@ namespace ngraph
         /// \param dimension Value of the dimension. Must not be equal to
         ///                  Dimension::s_dynamic_val.
         /// \throws std::invalid_argument If `dimension` == Dimension::s_dynamic_val.
-        Dimension(size_t dimension);
+        Dimension(int64_t dimension);
 
         /// \brief Construct a dynamic dimension.
         Dimension() { m_dimension = s_dynamic_val; }
@@ -46,25 +46,30 @@ namespace ngraph
         /// \brief Check whether this dimension is dynamic.
         /// \return `false` if the dimension is static, else `true`.
         bool is_dynamic() const { return !is_static(); }
-        /// \brief Convert this dimension to `size_t`. This dimension must be static.
+        /// \brief Convert this dimension to `int64_t`. This dimension must be static.
         /// \throws std::invalid_argument If this dimension is dynamic.
-        explicit operator size_t() const
+        explicit operator int64_t() const
         {
             if (is_dynamic())
             {
-                throw std::invalid_argument("Cannot convert dynamic dimension to size_t");
+                throw std::invalid_argument("Cannot convert dynamic dimension to int64_t");
             }
             return m_dimension;
         }
-        /// \brief Convert this dimension to `ptrdiff_t`. This dimension must be static.
-        /// \throws std::invalid_argument If this dimension is dynamic.
-        explicit operator ptrdiff_t() const
+        /// \brief Convert this dimension to `size_t`. This dimension must be static and
+        ///        non-negative.
+        /// \throws std::invalid_argument If this dimension is dynamic or negative.
+        explicit operator size_t() const
         {
             if (is_dynamic())
             {
-                throw std::invalid_argument("Cannot convert dynamic dimension to ptrdiff_t");
+                throw std::invalid_argument("Cannot convert dynamic dimension to size_t");
+            }
+            if (m_dimension < 0)
+            {
+                throw std::invalid_argument("Cannot convert negative dimension to size_t");
             }
-            return static_cast<ptrdiff_t>(m_dimension);
+            return m_dimension;
         }
 
         /// \brief Check whether this dimension represents the same scheme as the argument (both
@@ -75,7 +80,7 @@ namespace ngraph
         bool same_scheme(const Dimension& dim) const
         {
             return (is_dynamic() && dim.is_dynamic()) ||
-                   (is_static() && dim.is_static() && m_dimension == size_t(dim));
+                   (is_static() && dim.is_static() && m_dimension == int64_t(dim));
         }
 
         /// \brief Try to merge two Dimension objects together.
@@ -128,25 +133,25 @@ namespace ngraph
         /// \return A dynamic dimension.
         static Dimension dynamic() { return Dimension(); }
         /// \brief Constant for the value used internally to represent a dynamic dimension.
-        static const size_t s_dynamic_val{(std::numeric_limits<size_t>::max())};
+        static const int64_t s_dynamic_val{(std::numeric_limits<int64_t>::max())};
 
         /// \brief Addition operator for Dimension.
         /// \param dim Right operand for addition.
         /// \return Dimension::dynamic() if either of `*this` or `dim` is dynamic; else, a static
-        ///         dimension with value `size_t(*this)+size_t(dim)`.
+        ///         dimension with value `int64_t(*this)+in64_t(dim)`.
         Dimension operator+(const Dimension& dim) const;
 
         /// \brief Subtraction operator for Dimension.
         /// \param dim Right operand for subtraction.
         /// \return Dimension::dynamic() if either of `*this` or `dim` is dynamic; else, a static
-        ///         dimension with value `size_t(*this)-size_t(dim)`.
+        ///         dimension with value `int64_t(*this)-int64_t(dim)`.
         Dimension operator-(const Dimension& dim) const;
 
         /// \brief Multiplication operator for Dimension.
         /// \param dim Right operand for multiplicaiton.
         /// \return 0 if either of `*this` or `dim` is static and 0; else, Dimension::dynamic() if
         ///         either of `*this` or `dim` is dynamic; else, a static dimension with value
-        ///         `size_t(*this)*size_t(dim)`.
+        ///         `int64_t(*this)*int64_t(dim)`.
         Dimension operator*(const Dimension& dim) const;
 
         /// \brief Add-into operator for Dimension.
@@ -160,7 +165,7 @@ namespace ngraph
     private:
         // The actual numerical value of the dimension. s_dynamic_val is a special case,
         // representing a dynamic dimension.
-        size_t m_dimension;
+        int64_t m_dimension;
     };
 
     /// \brief Insert a human-readable representation of a dimension into an output stream.
@@ -168,6 +173,6 @@ namespace ngraph
     /// \param dimension The dimension to be inserted into `str`.
     /// \return A reference to `str` after insertion.
     ///
-    /// Inserts the string `?` if `dimension` is dynamic; else inserts `size_t(dimension)`.
+    /// Inserts the string `?` if `dimension` is dynamic; else inserts `int64_t(dimension)`.
     std::ostream& operator<<(std::ostream& str, const Dimension& dimension);
 }

src/ngraph/ngraph.hpp

@@ -89,6 +89,7 @@
 #include "ngraph/op/experimental/batch_mat_mul.hpp"
 #include "ngraph/op/experimental/dyn_broadcast.hpp"
 #include "ngraph/op/experimental/dyn_pad.hpp"
+#include "ngraph/op/experimental/dyn_replace_slice.hpp"
 #include "ngraph/op/experimental/dyn_reshape.hpp"
 #include "ngraph/op/experimental/dyn_slice.hpp"
 #include "ngraph/op/experimental/range.hpp"

src/ngraph/op/experimental/dyn_replace_slice.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 "ngraph/op/experimental/dyn_replace_slice.hpp"
+
+#include "ngraph/op/constant.hpp"
+#include "ngraph/validation_util.hpp"
+
+#include <memory>
+
+using namespace std;
+using namespace ngraph;
+
+op::DynReplaceSlice::DynReplaceSlice(const shared_ptr<Node>& arg,
+                                     const shared_ptr<Node>& replacement,
+                                     const shared_ptr<Node>& lower_bounds,
+                                     const shared_ptr<Node>& upper_bounds,
+                                     const shared_ptr<Node>& strides,
+                                     const AxisSet& lower_bounds_mask,
+                                     const AxisSet& upper_bounds_mask,
+                                     const AxisSet& new_axis,
+                                     const AxisSet& shrink_axis,
+                                     const AxisSet& ellipsis_mask)
+    : Op("DynReplaceSlice",
+         check_single_output_args({arg, replacement, lower_bounds, upper_bounds, strides}))
+    , m_lower_bounds_mask(lower_bounds_mask)
+    , m_upper_bounds_mask(upper_bounds_mask)
+    , m_new_axis(new_axis)
+    , m_shrink_axis(shrink_axis)
+    , m_ellipsis_mask(ellipsis_mask)
+{
+    constructor_validate_and_infer_types();
+}
+
+void op::DynReplaceSlice::validate_and_infer_types()
+{
+    auto arg_et = get_input_element_type(0);
+    auto replacement_et = get_input_element_type(1);
+    auto lower_bounds_et = get_input_element_type(2);
+    auto upper_bounds_et = get_input_element_type(3);
+    auto strides_et = get_input_element_type(4);
+
+    element::Type result_et;
+
+    // check data types
+    NODE_VALIDATION_CHECK(this,
+                          element::Type::merge(result_et, arg_et, replacement_et),
+                          "Argument element type is not compatible with replacement element type");
+
+    NODE_VALIDATION_CHECK(this,
+                          lower_bounds_et.compatible(element::Type_t::i64),
+                          "Lower bounds must have element type i64.");
+    NODE_VALIDATION_CHECK(this,
+                          upper_bounds_et.compatible(element::Type_t::i64),
+                          "Upper bounds must have element type i64.");
+    NODE_VALIDATION_CHECK(
+        this, strides_et.compatible(element::Type_t::i64), "Strides must have element type i64");
+
+    // check shapes
+    auto arg_shape = get_input_partial_shape(0);
+    auto replacement_shape = get_input_partial_shape(1);
+    auto lower_bounds_shape = get_input_partial_shape(2);
+    auto upper_bounds_shape = get_input_partial_shape(3);
+    auto strides_shape = get_input_partial_shape(4);
+    NODE_VALIDATION_CHECK(this,
+                          lower_bounds_shape.rank().compatible(1),
+                          "Lower bounds shape must have rank 1, got ",
+                          lower_bounds_shape.rank(),
+                          ".");
+    NODE_VALIDATION_CHECK(this,
+                          upper_bounds_shape.rank().compatible(1),
+                          "Upper bounds shape must have rank 1, got ",
+                          upper_bounds_shape.rank(),
+                          ".");
+    NODE_VALIDATION_CHECK(this,
+                          strides_shape.rank().compatible(1),
+                          "Strides shape must have rank 1, got ",
+                          strides_shape.rank(),
+                          ".");
+
+    PartialShape attrs_shape{PartialShape::dynamic()};
+
+    NODE_VALIDATION_CHECK(this,
+                          (lower_bounds_shape.same_scheme(PartialShape{0}) ||
+                           PartialShape::merge_into(attrs_shape, lower_bounds_shape)) &&
+                              (upper_bounds_shape.same_scheme(PartialShape{0}) ||
+                               PartialShape::merge_into(attrs_shape, upper_bounds_shape)) &&
+                              (strides_shape.same_scheme(PartialShape{0}) ||
+                               PartialShape::merge_into(attrs_shape, strides_shape)),
+                          "Shapes for lower bounds, upper bounds, and strides do not match");
+
+    set_input_is_relevant_to_shape(2);
+    set_input_is_relevant_to_shape(3);
+    set_input_is_relevant_to_shape(4);
+
+    auto lower_bounds = dynamic_pointer_cast<op::Constant>(get_argument(2));
+    auto upper_bounds = dynamic_pointer_cast<op::Constant>(get_argument(3));
+    auto strides = dynamic_pointer_cast<op::Constant>(get_argument(4));
+
+    // TODO(amprocte): We can get a bit more information here about the ranks of arg and
+    // replacement by inspecting the attributes.
+    auto slice_shape = PartialShape::dynamic();
+
+    if (lower_bounds && upper_bounds && strides)
+    {
+        slice_shape = infer_slice_shape(this,
+                                        get_input_partial_shape(0),
+                                        lower_bounds->get_vector<int64_t>(),
+                                        upper_bounds->get_vector<int64_t>(),
+                                        strides->get_vector<int64_t>(),
+                                        m_lower_bounds_mask,
+                                        m_upper_bounds_mask,
+                                        m_new_axis,
+                                        m_shrink_axis,
+                                        m_ellipsis_mask);
+    }
+
+    NODE_VALIDATION_CHECK(this,
+                          slice_shape.compatible(replacement_shape),
+                          "Shape of the replacement is not compatible with the shape of the "
+                          "slice (shape of slice: ",
+                          slice_shape,
+                          ")");
+
+    set_output_type(0, result_et, arg_shape);
+}
+
+shared_ptr<Node> op::DynReplaceSlice::copy_with_new_args(const NodeVector& new_args) const
+{
+    check_new_args_count(this, new_args);
+    return make_shared<DynReplaceSlice>(new_args.at(0),
+                                        new_args.at(1),
+                                        new_args.at(2),
+                                        new_args.at(3),
+                                        new_args.at(4),
+                                        m_lower_bounds_mask,
+                                        m_upper_bounds_mask,
+                                        m_new_axis,
+                                        m_shrink_axis,
+                                        m_ellipsis_mask);
+}
+
+void op::DynReplaceSlice::generate_adjoints(autodiff::Adjoints& adjoints, const NodeVector& deltas)
+{
+    throw ngraph_error("generate_adjoints not implemented for DynReplaceSlice");
+}

src/ngraph/op/experimental/dyn_replace_slice.hpp

+//*****************************************************************************
+// 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.
+//*****************************************************************************
+
+#pragma once
+
+#include "ngraph/node.hpp"
+#include "ngraph/op/op.hpp"
+
+namespace ngraph
+{
+    namespace op
+    {
+        /// \brief Takes a slice of an input tensor, i.e., the sub-tensor that resides within a bounding box, optionally with stride.
+        class DynReplaceSlice : public Op
+        {
+        public:
+            /// \brief Constructs a dynamic tensor replace-slice operation.
+            ///
+            /// \param arg The tensor in which to replace the slice.
+            /// \param replacement Data to copy to the slice for replacement.
+            /// \param lower_bounds The axiswise lower bounds of the slice (inclusive).
+            /// \param upper_bounds The axiswise upper bounds of the slice (exclusive).
+            /// \param strides The slicing strides; for example, strides of `{n,m}` means to take
+            ///                every nth row and every mth column of the input matrix.
+            /// \param lower_bounds_mask Ignores lower_bounds for axis with the mask set
+            /// \param upper_bounds_mask Ignores upper_bounds for axis with the mask set
+            /// \param new_axis          Add dimension one axis at the set positions
+            /// \param shrink_axis       Delete dimensions at the set positions
+            /// \param ellipsis_mask     Inserts missing dimensions on the set position
+            DynReplaceSlice(const std::shared_ptr<Node>& arg,
+                            const std::shared_ptr<Node>& replacement,
+                            const std::shared_ptr<Node>& lower_bounds,
+                            const std::shared_ptr<Node>& upper_bounds,
+                            const std::shared_ptr<Node>& strides,
+                            const AxisSet& lower_bounds_mask = AxisSet{},
+                            const AxisSet& upper_bounds_mask = AxisSet{},
+                            const AxisSet& new_axis = AxisSet{},
+                            const AxisSet& shrink_axis = AxisSet{},
+                            const AxisSet& ellipsis_mask = AxisSet{});
+
+            const AxisSet& get_lower_bounds_mask() const { return m_lower_bounds_mask; }
+            const AxisSet& get_upper_bounds_mask() const { return m_upper_bounds_mask; }
+            const AxisSet& get_new_axis() const { return m_new_axis; }
+            const AxisSet& get_shrink_axis() const { return m_shrink_axis; }
+            const AxisSet& get_ellipsis_mask() const { return m_ellipsis_mask; }
+            virtual std::shared_ptr<Node>
+                copy_with_new_args(const NodeVector& new_args) const override;
+
+        protected:
+            virtual void generate_adjoints(autodiff::Adjoints& adjoints,
+                                           const NodeVector& deltas) override;
+            void validate_and_infer_types() override;
+
+        private:
+            /// Helper method to compute output shape
+            Shape compute_output_shape() const;
+
+            AxisSet m_lower_bounds_mask;
+            AxisSet m_upper_bounds_mask;
+            AxisSet m_new_axis;
+            AxisSet m_shrink_axis;
+            AxisSet m_ellipsis_mask;
+        };
+    }
+}

src/ngraph/op/experimental/dyn_slice.cpp

@@ -17,6 +17,7 @@
 #include "ngraph/op/experimental/dyn_slice.hpp"
 
 #include "ngraph/op/constant.hpp"
+#include "ngraph/validation_util.hpp"
 
 #include <memory>
 
@@ -42,142 +43,6 @@ op::DynSlice::DynSlice(const shared_ptr<Node>& arg,
     constructor_validate_and_infer_types();
 }
 
-Shape op::DynSlice::compute_output_shape() const
-{
-    auto input_shape = get_input_partial_shape(0).to_shape();
-    auto lower_bounds = dynamic_pointer_cast<op::Constant>(get_argument(1));
-    auto upper_bounds = dynamic_pointer_cast<op::Constant>(get_argument(2));
-    auto strides = dynamic_pointer_cast<op::Constant>(get_argument(3));
-
-    if (lower_bounds && upper_bounds && strides)
-    {
-        auto lb = lower_bounds->get_vector<int64_t>();
-        auto ub = upper_bounds->get_vector<int64_t>();
-        auto str = strides->get_vector<int64_t>();
-
-        int max_dims = input_shape.size() + m_new_axis.size();
-        if (lb.size() && ub.size())
-        {
-            NODE_VALIDATION_CHECK(
-                this,
-                lb.size() == ub.size(),
-                "Lower bounds and Upper bounds needs to have same number of values");
-        }
-        if (lb.size() && str.size())
-        {
-            NODE_VALIDATION_CHECK(this,
-                                  lb.size() == str.size(),
-                                  "Lower bounds and strides needs to have same number of values");
-        }
-        if (ub.size() && str.size())
-        {
-            NODE_VALIDATION_CHECK(this,
-                                  ub.size() == str.size(),
-                                  "Upper bounds and strides needs to have same number of values");
-        }
-
-        int bounds_size =
-            lb.size() ? lb.size() : (ub.size() ? ub.size() : (str.size() ? str.size() : 0));
-
-        NODE_VALIDATION_CHECK(
-            this, m_ellipsis_mask.size() <= 1, "Ellipsis mask cannot specify more than one axis");
-
-        int ellipsis_pos1 = m_ellipsis_mask.size() ? *m_ellipsis_mask.begin() : max_dims;
-
-        int ellipsis_pos2 = max_dims;
-        bounds_size -= ellipsis_pos1;
-        if (bounds_size > 0 && (max_dims - bounds_size) > ellipsis_pos1)
-        {
-            ellipsis_pos2 = max_dims - bounds_size;
-        }
-
-        std::vector<int> begin_dms(max_dims, 0);
-        std::vector<int> end_dms(max_dims, -1);
-        std::vector<int> stride_dms(max_dims, 1);
-
-        int i, j, k, bj, ej, sj;
-        Shape out_dims;
-        for (i = 0, j = 0, k = 0, bj = 0, ej = 0, sj = 0; i < max_dims; i++)
-        {
-            if (i >= ellipsis_pos1 && i < ellipsis_pos2)
-            {
-                if (m_new_axis.find(i) == m_new_axis.end())
-                {
-                    end_dms[i] = end_dms[i] >= 0 ? end_dms[i] : input_shape[j++] + end_dms[i];
-                }
-                else
-                {
-                    end_dms[i] = begin_dms[i];
-                }
-                out_dims.push_back(
-                    static_cast<int>(ceil(static_cast<float>(abs(end_dms[i] - begin_dms[i]) + 1) /
-                                          static_cast<float>(abs(stride_dms[i])))));
-                k = ellipsis_pos1;
-                continue;
-            }
-            stride_dms[i] = (str.size() > sj && str[sj] != 0) ? str[sj++] : 1;
-
-            // Use lower_bounds if mask is not set
-            if (m_lower_bounds_mask.find(j) == m_lower_bounds_mask.end())
-            {
-                begin_dms[i] = lb.size() > bj ? lb[bj] : (stride_dms[i] > 0 ? 0 : -1);
-            }
-            else
-            {
-                begin_dms[i] = stride_dms[i] > 0 ? 0 : -1;
-            }
-            bj++;
-
-            begin_dms[i] = begin_dms[i] >= 0 ? begin_dms[i] : input_shape[j] + begin_dms[i];
-            //  Clipping 'begin'
-            begin_dms[i] =
-                (begin_dms[i] < 0) ? 0 : (begin_dms[i] >= input_shape[j] ? input_shape[j] - 1
-                                                                         : begin_dms[i]);
-
-            // Use upper_bounds if mask is not set
-            if (m_upper_bounds_mask.find(j) == m_upper_bounds_mask.end())
-            {
-                int end_dms_tmp =
-                    ub.size() > ej ? (stride_dms[i] > 0 ? ub[ej] - 1 : ub[ej] + 1) : end_dms[i];
-                end_dms[i] = ub.size() > ej ? end_dms_tmp : (stride_dms[i] > 0 ? -1 : 0);
-            }
-            else
-            {
-                end_dms[i] = stride_dms[i] > 0 ? -1 : 0;
-            }
-            ej++;
-            end_dms[i] = end_dms[i] >= 0 ? end_dms[i] : input_shape[j] + end_dms[i];
-            //  Clipping 'end'
-            end_dms[i] = (end_dms[i] < 0) ? 0 : (end_dms[i] >= input_shape[j] ? input_shape[j] - 1
-                                                                              : end_dms[i]);
-
-            if (m_new_axis.find(i) == m_new_axis.end())
-            {
-                j++;
-            }
-            else
-            {
-                end_dms[i] = 0;
-            }
-
-            if (m_shrink_axis.find(k) != m_shrink_axis.end())
-            {
-                end_dms[i] = begin_dms[i];
-            }
-            else
-            {
-                out_dims.push_back(
-                    static_cast<int>(ceil(static_cast<float>(abs(end_dms[i] - begin_dms[i]) + 1) /
-                                          static_cast<float>(abs(stride_dms[i])))));
-            }
-
-            k++;
-        }
-        return out_dims;
-    }
-    return Shape{};
-}
-
 void op::DynSlice::validate_and_infer_types()
 {
     auto lower_bounds_et = get_input_element_type(1);
@@ -219,17 +84,24 @@ void op::DynSlice::validate_and_infer_types()
     set_input_is_relevant_to_shape(2);
     set_input_is_relevant_to_shape(3);
 
-    if (get_input_partial_shape(0).is_static())
+    auto lower_bounds = dynamic_pointer_cast<op::Constant>(get_argument(1));
+    auto upper_bounds = dynamic_pointer_cast<op::Constant>(get_argument(2));
+    auto strides = dynamic_pointer_cast<op::Constant>(get_argument(3));
+
+    if (lower_bounds && upper_bounds && strides)
     {
-        auto shape = compute_output_shape();
-        if (shape != Shape{})
-        {
-            set_output_type(0, get_input_element_type(0), shape);
-        }
-        else
-        {
-            set_output_type(0, get_input_element_type(0), PartialShape::dynamic(arg_shape.rank()));
-        }
+        set_output_type(0,
+                        get_input_element_type(0),
+                        infer_slice_shape(this,
+                                          get_input_partial_shape(0),
+                                          lower_bounds->get_vector<int64_t>(),
+                                          upper_bounds->get_vector<int64_t>(),
+                                          strides->get_vector<int64_t>(),
+                                          m_lower_bounds_mask,
+                                          m_upper_bounds_mask,
+                                          m_new_axis,
+                                          m_shrink_axis,
+                                          m_ellipsis_mask));
     }
     else
     {

src/ngraph/op/op_tbl.hpp

@@ -84,6 +84,7 @@ NGRAPH_OP(Divide, ngraph::op)
 NGRAPH_OP(Dot, ngraph::op)
 NGRAPH_OP(DynBroadcast, ngraph::op)
 NGRAPH_OP(DynPad, ngraph::op)
+NGRAPH_OP(DynReplaceSlice, ngraph::op)
 NGRAPH_OP(DynReshape, ngraph::op)
 NGRAPH_OP(DynSlice, ngraph::op)
 NGRAPH_OP(EmbeddingLookup, ngraph::op)

src/ngraph/op/pad.cpp

@@ -84,7 +84,7 @@ void op::Pad::validate_and_infer_types()
             if (arg_shape[i].is_static())
             {
                 ptrdiff_t result_dim =
-                    m_padding_below[i] + static_cast<ptrdiff_t>(arg_shape[i]) + m_padding_above[i];
+                    m_padding_below[i] + static_cast<int64_t>(arg_shape[i]) + m_padding_above[i];
                 NODE_VALIDATION_CHECK(this,
                                       result_dim >= 0,
                                       "Inferred result dimension at axis ",

src/ngraph/partial_shape.cpp

@@ -275,3 +275,16 @@ bool PartialShape::broadcast_merge_into(PartialShape& dst,
         return success;
     }
 }
+
+bool PartialShape::all_non_negative() const
+{
+    for (auto& d : m_dimensions)
+    {
+        if (d.is_static() && int64_t(d) < 0)
+        {
+            return false;
+        }
+    }
+
+    return true;
+}

src/ngraph/partial_shape.hpp

@@ -164,6 +164,10 @@ namespace ngraph
         /// \throws std::invalid_argument If this PartialShape is dynamic.
         Shape to_shape() const;
 
+        /// \brief Returns `true` if all static dimensions of the tensor are non-negative, else
+        ///        `false`.
+        bool all_non_negative() const;
+
         /// \brief Index operator for PartialShape.
         /// \param i The index of the dimension being selected.
         /// \return A reference to the `i`th Dimension of this shape.

src/ngraph/pass/dyn_elimination.cpp

@@ -19,10 +19,12 @@
 #include "dyn_elimination.hpp"
 #include "ngraph/op/broadcast.hpp"
 #include "ngraph/op/experimental/dyn_broadcast.hpp"
+#include "ngraph/op/experimental/dyn_replace_slice.hpp"
 #include "ngraph/op/experimental/dyn_reshape.hpp"
 #include "ngraph/op/experimental/dyn_slice.hpp"
 #include "ngraph/op/experimental/range.hpp"
 #include "ngraph/op/experimental/transpose.hpp"
+#include "ngraph/op/replace_slice.hpp"
 #include "ngraph/op/reshape.hpp"
 #include "ngraph/op/reverse.hpp"
 #include "ngraph/op/slice.hpp"
@@ -36,7 +38,8 @@ pass::DynElimination::DynElimination()
     : GraphRewrite()
 {
     construct_transpose();
-    construct_broadcast();
+    construct_dyn_broadcast();
+    construct_dyn_replace_slice();
     construct_dyn_slice();
     construct_dyn_reshape();
     construct_range();
@@ -89,7 +92,7 @@ void pass::DynElimination::construct_transpose()
     add_matcher(transpose_matcher, transpose_callback, all_pass_property_off);
 }
 
-void pass::DynElimination::construct_broadcast()
+void pass::DynElimination::construct_dyn_broadcast()
 {
     auto data_arg_label = make_shared<pattern::op::Label>(element::f32, Shape{1, 2, 3});
     auto shape_arg_label =
@@ -444,6 +447,92 @@ void pass::DynElimination::construct_dyn_slice()
     add_matcher(dyn_slice_matcher, dyn_slice_callback, all_pass_property_off);
 }
 
+void pass::DynElimination::construct_dyn_replace_slice()
+{
+    auto data_arg_label = make_shared<pattern::op::Label>(element::f32, Shape{1, 2, 3});
+    auto replacement_arg_label = make_shared<pattern::op::Label>(element::f32, Shape{1, 2, 3});
+    auto begins_arg_label =
+        make_shared<pattern::op::Label>(element::i64, Shape{3}, pattern::has_class<op::Constant>());
+    auto ends_arg_label =
+        make_shared<pattern::op::Label>(element::i64, Shape{3}, pattern::has_class<op::Constant>());
+    auto strides_arg_label =
+        make_shared<pattern::op::Label>(element::i64, Shape{3}, pattern::has_class<op::Constant>());
+
+    auto dyn_replace_slice_pat = make_shared<op::DynReplaceSlice>(data_arg_label,
+                                                                  replacement_arg_label,
+                                                                  begins_arg_label,
+                                                                  ends_arg_label,
+                                                                  strides_arg_label,
+                                                                  AxisSet{},
+                                                                  AxisSet{},
+                                                                  AxisSet{},
+                                                                  AxisSet{},
+                                                                  AxisSet{});
+    auto dyn_replace_slice_callback = [data_arg_label,
+                                       replacement_arg_label,
+                                       begins_arg_label,
+                                       ends_arg_label,
+                                       strides_arg_label](pattern::Matcher& m) {
+        auto pattern_map = m.get_pattern_map();
+
+        auto data_arg = pattern_map[data_arg_label];
+        auto replacement_arg = pattern_map[replacement_arg_label];
+        auto begins_arg = static_pointer_cast<op::Constant>(pattern_map[begins_arg_label]);
+        auto ends_arg = static_pointer_cast<op::Constant>(pattern_map[ends_arg_label]);
+        auto strides_arg = static_pointer_cast<op::Constant>(pattern_map[strides_arg_label]);
+        auto dyn_replace_slice = static_pointer_cast<op::DynReplaceSlice>(m.get_match_root());
+
+        if (data_arg->get_output_partial_shape(0).is_dynamic() ||
+            replacement_arg->get_output_partial_shape(0).is_dynamic() ||
+            begins_arg->get_element_type() != element::i64 ||
+            ends_arg->get_element_type() != element::i64 ||
+            strides_arg->get_element_type() != element::i64)
+        {
+            return false;
+        }
+
+        SlicePlan p = make_plan(data_arg->get_output_shape(0),
+                                begins_arg->get_vector<int64_t>(),
+                                ends_arg->get_vector<int64_t>(),
+                                strides_arg->get_vector<int64_t>(),
+                                dyn_replace_slice->get_lower_bounds_mask(),
+                                dyn_replace_slice->get_upper_bounds_mask(),
+                                dyn_replace_slice->get_new_axis(),
+                                dyn_replace_slice->get_shrink_axis(),
+                                dyn_replace_slice->get_ellipsis_mask());
+
+        shared_ptr<Node> substitute_replacement_arg = replacement_arg;
+
+        if (!p.reverse_axes.empty())
+        {
+            substitute_replacement_arg =
+                make_shared<op::Reverse>(substitute_replacement_arg, p.reverse_axes);
+        }
+
+        if (p.reshape_in_shape != p.reshape_out_shape)
+        {
+            substitute_replacement_arg =
+                make_shared<op::Reshape>(substitute_replacement_arg,
+                                         ngraph::get_default_order(p.reshape_out_shape),
+                                         p.reshape_in_shape);
+        }
+
+        auto substitute_rsl =
+            make_shared<op::ReplaceSlice>(data_arg,
+                                          substitute_replacement_arg,
+                                          Coordinate(p.begins.begin(), p.begins.end()),
+                                          Coordinate(p.ends.begin(), p.ends.end()),
+                                          Strides(p.strides.begin(), p.strides.end()));
+
+        replace_node(m.get_match_root(), substitute_rsl);
+        return true;
+    };
+
+    auto dyn_replace_slice_matcher =
+        make_shared<pattern::Matcher>(dyn_replace_slice_pat, "DynElimination.DynReplaceShape");
+    add_matcher(dyn_replace_slice_matcher, dyn_replace_slice_callback, all_pass_property_off);
+}
+
 void pass::DynElimination::construct_dyn_reshape()
 {
     auto data_arg_label = make_shared<pattern::op::Label>(element::f32, Shape{1, 2, 3});

src/ngraph/pass/dyn_elimination.hpp

@@ -30,7 +30,8 @@ namespace ngraph
 
         private:
             void construct_transpose();
-            void construct_broadcast();
+            void construct_dyn_broadcast();
+            void construct_dyn_replace_slice();
             void construct_dyn_slice();
             void construct_dyn_reshape();
             void construct_range();

src/ngraph/runtime/gpu/gpu_backend.cpp

@@ -218,6 +218,7 @@ bool runtime::gpu::GPU_Backend::is_supported(const Node& op) const
 {
     set<string> unsupported_ops = {"Quantize",
                                    "Dequantize",
+                                   "DynReplaceSlice",
                                    "DynReshape",
                                    "DynSlice",
                                    "ShapeOf",

src/ngraph/runtime/gpu/gpu_emitter.cpp

@@ -62,6 +62,7 @@
 #include "ngraph/op/experimental/batch_mat_mul.hpp"
 #include "ngraph/op/experimental/dyn_broadcast.hpp"
 #include "ngraph/op/experimental/dyn_pad.hpp"
+#include "ngraph/op/experimental/dyn_replace_slice.hpp"
 #include "ngraph/op/experimental/dyn_reshape.hpp"
 #include "ngraph/op/experimental/dyn_slice.hpp"
 #include "ngraph/op/experimental/generate_mask.hpp"
@@ -612,6 +613,11 @@ std::string runtime::gpu::GPU_Emitter::emit_Dot(EMIT_ARGS)
     return compiled_function->add_to_runtime(index, function_name, args, out);
 }
 
+std::string runtime::gpu::GPU_Emitter::emit_DynReplaceSlice(EMIT_ARGS)
+{
+    throw unsupported_op("Unsupported op '" + node->description() + "'");
+}
+
 std::string runtime::gpu::GPU_Emitter::emit_DynReshape(EMIT_ARGS)
 {
     throw unsupported_op("Unsupported op '" + node->description() + "'");

src/ngraph/runtime/intelgpu/intelgpu_backend.cpp

@@ -2061,6 +2061,7 @@ shared_ptr<runtime::Executable>
         case OP_TYPEID::DepthToSpace:
         case OP_TYPEID::DynBroadcast:
         case OP_TYPEID::DynPad:
+        case OP_TYPEID::DynReplaceSlice:
         case OP_TYPEID::DynReshape:
         case OP_TYPEID::DynSlice:
         case OP_TYPEID::Elu:

src/ngraph/runtime/intelgpu/unit_test.manifest

@@ -18,6 +18,7 @@ replace_slice_matrix
 replace_slice_matrix_inplace
 replace_slice_scalar
 replace_slice_vector
+dyn_replace_slice
 shape_of_5d
 shape_of_matrix
 shape_of_scalar

src/ngraph/runtime/interpreter/int_executable.hpp

@@ -1503,7 +1503,8 @@ private:
         case OP_TYPEID::Transpose:
         case OP_TYPEID::DynPad:
         case OP_TYPEID::Tile:
-        default: throw unsupported_op("Unsupported op '" + node.description() + "'");
+        case OP_TYPEID::DynReplaceSlice:
+            throw unsupported_op("Unsupported op '" + node.description() + "'");
 #if !(defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ == 8))
 #pragma GCC diagnostic pop
 #endif

src/ngraph/serializer.cpp

@@ -55,6 +55,7 @@
 #include "ngraph/op/experimental/compiled_kernel.hpp"
 #include "ngraph/op/experimental/dyn_broadcast.hpp"
 #include "ngraph/op/experimental/dyn_pad.hpp"
+#include "ngraph/op/experimental/dyn_replace_slice.hpp"
 #include "ngraph/op/experimental/dyn_reshape.hpp"
 #include "ngraph/op/experimental/dyn_slice.hpp"
 #include "ngraph/op/experimental/generate_mask.hpp"
@@ -1130,6 +1131,25 @@ shared_ptr<Node> JSONDeserializer::deserialize_node(json node_js)
             node = make_shared<op::DynPad>(args[0], args[1], args[2], args[3]);
             break;
         }
+        case OP_TYPEID::DynReplaceSlice:
+        {
+            auto lower_bounds_mask = node_js.at("lower_bounds_mask").get<set<size_t>>();
+            auto upper_bounds_mask = node_js.at("upper_bounds_mask").get<set<size_t>>();
+            auto new_axis = node_js.at("new_axis").get<set<size_t>>();
+            auto shrink_axis = node_js.at("shrink_axis").get<set<size_t>>();
+            auto ellipsis_mask = node_js.at("ellipsis_mask").get<set<size_t>>();
+            node = make_shared<op::DynReplaceSlice>(args[0],
+                                                    args[1],
+                                                    args[2],
+                                                    args[3],
+                                                    args[4],
+                                                    lower_bounds_mask,
+                                                    upper_bounds_mask,
+                                                    new_axis,
+                                                    shrink_axis,
+                                                    ellipsis_mask);
+            break;
+        }
         case OP_TYPEID::DynReshape:
         {
             node = make_shared<op::DynReshape>(args[0], args[1]);
@@ -1137,7 +1157,20 @@ shared_ptr<Node> JSONDeserializer::deserialize_node(json node_js)
         }
         case OP_TYPEID::DynSlice:
         {
-            node = make_shared<op::DynSlice>(args[0], args[1], args[2], args[3]);
+            auto lower_bounds_mask = node_js.at("lower_bounds_mask").get<set<size_t>>();
+            auto upper_bounds_mask = node_js.at("upper_bounds_mask").get<set<size_t>>();
+            auto new_axis = node_js.at("new_axis").get<set<size_t>>();
+            auto shrink_axis = node_js.at("shrink_axis").get<set<size_t>>();
+            auto ellipsis_mask = node_js.at("ellipsis_mask").get<set<size_t>>();
+            node = make_shared<op::DynSlice>(args[0],
+                                             args[1],
+                                             args[2],
+                                             args[3],
+                                             lower_bounds_mask,
+                                             upper_bounds_mask,
+                                             new_axis,
+                                             shrink_axis,
+                                             ellipsis_mask);
             break;
         }
         case OP_TYPEID::Elu:
@@ -2297,9 +2330,27 @@ json JSONSerializer::serialize_node(const Node& n)
     }
     case OP_TYPEID::DynPad: { break;
     }
+    case OP_TYPEID::DynReplaceSlice:
+    {
+        auto tmp = dynamic_cast<const op::DynReplaceSlice*>(&n);
+        node["lower_bounds_mask"] = tmp->get_lower_bounds_mask();
+        node["upper_bounds_mask"] = tmp->get_upper_bounds_mask();
+        node["new_axis"] = tmp->get_new_axis();
+        node["shrink_axis"] = tmp->get_shrink_axis();
+        node["ellipsis_mask"] = tmp->get_ellipsis_mask();
+        break;
+    }
     case OP_TYPEID::DynReshape: { break;
     }
-    case OP_TYPEID::DynSlice: { break;
+    case OP_TYPEID::DynSlice:
+    {
+        auto tmp = dynamic_cast<const op::DynSlice*>(&n);
+        node["lower_bounds_mask"] = tmp->get_lower_bounds_mask();
+        node["upper_bounds_mask"] = tmp->get_upper_bounds_mask();
+        node["new_axis"] = tmp->get_new_axis();
+        node["shrink_axis"] = tmp->get_shrink_axis();
+        node["ellipsis_mask"] = tmp->get_ellipsis_mask();
+        break;
     }
     case OP_TYPEID::Elu: { break;
     }

src/ngraph/validation_util.cpp

@@ -142,8 +142,8 @@ PartialShape ngraph::infer_windowed_reduction_output_shape(const Node* node,
             ptrdiff_t data_padded_dilated_dim = -1;
             if (data_dim_static)
             {
-                data_padded_dilated_dim = (static_cast<ptrdiff_t>(data_dilation[i]) *
-                                           (static_cast<ptrdiff_t>(data_shape[i]) - 1)) +
+                data_padded_dilated_dim = (static_cast<int64_t>(data_dilation[i]) *
+                                           (static_cast<int64_t>(data_shape[i]) - 1)) +
                                           1 + data_padding_below[i] + data_padding_above[i];
                 NODE_VALIDATION_CHECK(
                     node,
@@ -158,8 +158,8 @@ PartialShape ngraph::infer_windowed_reduction_output_shape(const Node* node,
             ptrdiff_t window_dilated_dim = -1;
             if (window_dim_static)
             {
-                window_dilated_dim = static_cast<ptrdiff_t>(window_dilation[i]) *
-                                         (static_cast<ptrdiff_t>(window_shape[i]) - 1) +
+                window_dilated_dim = static_cast<int64_t>(window_dilation[i]) *
+                                         (static_cast<int64_t>(window_shape[i]) - 1) +
                                      1;
 
                 NODE_VALIDATION_CHECK(node,
@@ -628,3 +628,257 @@ void ngraph::infer_auto_padding(const Shape& image_shape,
         padding_above.push_back(pad_type == op::PadType::SAME_UPPER ? padding_rhs : padding_lhs);
     }
 }
+
+PartialShape ngraph::infer_slice_shape(const Node* node,
+                                       const PartialShape& input_shape,
+                                       const std::vector<int64_t>& lb,
+                                       const std::vector<int64_t>& ub,
+                                       const std::vector<int64_t>& str,
+                                       const AxisSet& lb_mask,
+                                       const AxisSet& ub_mask,
+                                       const AxisSet& new_axis,
+                                       const AxisSet& shrink_axis,
+                                       const AxisSet& ellipsis_mask)
+{
+    if (lb.size() && ub.size())
+    {
+        NODE_VALIDATION_CHECK(node,
+                              lb.size() == ub.size(),
+                              "Lower bounds and Upper bounds needs to have same number of values");
+    }
+    if (lb.size() && str.size())
+    {
+        NODE_VALIDATION_CHECK(node,
+                              lb.size() == str.size(),
+                              "Lower bounds and strides needs to have same number of values");
+    }
+    if (ub.size() && str.size())
+    {
+        NODE_VALIDATION_CHECK(node,
+                              ub.size() == str.size(),
+                              "Upper bounds and strides needs to have same number of values");
+    }
+
+    if (input_shape.rank().is_dynamic())
+    {
+        return PartialShape::dynamic();
+    }
+
+    int max_dims = size_t(input_shape.rank()) + new_axis.size();
+
+    int bounds_size =
+        lb.size() ? lb.size() : (ub.size() ? ub.size() : (str.size() ? str.size() : 0));
+
+    int ellipsis_pos1 = ellipsis_mask.size() ? *ellipsis_mask.begin() : max_dims;
+
+    int ellipsis_pos2 = max_dims;
+    bounds_size -= ellipsis_pos1;
+    if (bounds_size > 0 && (max_dims - bounds_size) > ellipsis_pos1)
+    {
+        ellipsis_pos2 = max_dims - bounds_size;
+    }
+
+    std::vector<Dimension> begin_dms(max_dims, 0);
+    std::vector<Dimension> end_dms(max_dims, -1);
+    std::vector<Dimension> stride_dms(max_dims, 1);
+
+    std::vector<Dimension> out_dims;
+
+    int j = 0;
+    int k = 0;
+    int bj = 0;
+    int ej = 0;
+    int sj = 0;
+
+    for (int i = 0; i < max_dims; i++)
+    {
+        if (i >= ellipsis_pos1 && i < ellipsis_pos2)
+        {
+            if (new_axis.find(i) == new_axis.end())
+            {
+                if (end_dms[i].is_static() && int64_t(end_dms[i]) < 0)
+                {
+                    end_dms[i] = input_shape[j++] + end_dms[i];
+                }
+            }
+            else
+            {
+                end_dms[i] = begin_dms[i];
+            }
+
+            if (end_dms[i].is_dynamic() || begin_dms[i].is_dynamic() || stride_dms[i].is_dynamic())
+            {
+                out_dims.push_back(Dimension::dynamic());
+            }
+            else
+            {
+                out_dims.push_back(static_cast<int64_t>(
+                    ceil(static_cast<float>(abs(int64_t(end_dms[i]) - int64_t(begin_dms[i])) + 1) /
+                         static_cast<float>(abs(int64_t(stride_dms[i]))))));
+            }
+            k = ellipsis_pos1;
+            continue;
+        }
+        stride_dms[i] = (str.size() > sj && str[sj] != 0) ? str[sj++] : 1;
+
+        // Use lower_bounds if mask is not set
+        if (lb_mask.find(j) == lb_mask.end())
+        {
+            if (lb.size() > bj)
+            {
+                begin_dms[i] = lb[bj];
+            }
+            else if (stride_dms[i].is_dynamic())
+            {
+                begin_dms[i] = Dimension::dynamic();
+            }
+            else if (int64_t(stride_dms[i]) > 0)
+            {
+                begin_dms[i] = 0;
+            }
+            else
+            {
+                begin_dms[i] = -1;
+            }
+        }
+        else if (stride_dms[i].is_dynamic())
+        {
+            begin_dms[i] = Dimension::dynamic();
+        }
+        else if (int64_t(stride_dms[i]) > 0)
+        {
+            begin_dms[i] = 0;
+        }
+        else
+        {
+            begin_dms[i] = -1;
+        }
+
+        bj++;
+
+        if (begin_dms[i].is_static() && int64_t(begin_dms[i]) < 0)
+        {
+            begin_dms[i] = input_shape[j] + begin_dms[i];
+        }
+        // Clipping 'begin'
+        if (begin_dms[i].is_static())
+        {
+            if (int64_t(begin_dms[i]) < 0)
+            {
+                begin_dms[i] = 0;
+            }
+            else if (input_shape[j].is_dynamic())
+            {
+                begin_dms[i] = Dimension::dynamic();
+            }
+            else if (int64_t(begin_dms[i]) >= int64_t(input_shape[j]))
+            {
+                begin_dms[i] = input_shape[j] - 1;
+            }
+        }
+
+        // Use upper_bounds if mask is not set
+        if (ub_mask.find(j) == ub_mask.end())
+        {
+            Dimension end_dms_tmp;
+
+            if (ub.size() <= ej)
+            {
+                end_dms_tmp = end_dms[i];
+            }
+            else if (stride_dms[i].is_dynamic())
+            {
+                end_dms_tmp = Dimension::dynamic();
+            }
+            else if (int64_t(stride_dms[i]) > 0)
+            {
+                end_dms_tmp = ub[ej] - 1;
+            }
+            else
+            {
+                end_dms_tmp = ub[ej] + 1;
+            }
+
+            if (ub.size() > ej)
+            {
+                end_dms[i] = end_dms_tmp;
+            }
+            else if (stride_dms[i].is_dynamic())
+            {
+                end_dms[i] = Dimension::dynamic();
+            }
+            else if (int64_t(stride_dms[i]) > 0)
+            {
+                end_dms[i] = -1;
+            }
+            else
+            {
+                end_dms[i] = 0;
+            }
+        }
+        else
+        {
+            if (stride_dms[i].is_dynamic())
+            {
+                end_dms[i] = Dimension::dynamic();
+            }
+            else if (int64_t(stride_dms[i]) > 0)
+            {
+                end_dms[i] = -1;
+            }
+            else
+            {
+                end_dms[i] = 0;
+            }
+        }
+        ej++;
+
+        if (end_dms[i].is_static() && int64_t(end_dms[i]) < 0)
+        {
+            end_dms[i] = input_shape[j] + end_dms[i];
+        }
+        // Clipping 'end'
+        if (end_dms[i].is_static())
+        {
+            if (int64_t(end_dms[i]) < 0)
+            {
+                end_dms[i] = 0;
+            }
+            else if (input_shape[j].is_dynamic())
+            {
+                end_dms[i] = Dimension::dynamic();
+            }
+            else if (int64_t(end_dms[i]) >= int64_t(input_shape[j]))
+            {
+                end_dms[i] = input_shape[j] - 1;
+            }
+        }
+
+        if (new_axis.find(i) == new_axis.end())
+        {
+            j++;
+        }
+        else
+        {
+            end_dms[i] = 0;
+        }
+
+        if (shrink_axis.find(k) != shrink_axis.end())
+        {
+            end_dms[i] = begin_dms[i];
+        }
+        else if (end_dms[i].is_dynamic() || begin_dms[i].is_dynamic() || stride_dms[i].is_dynamic())
+        {
+            out_dims.push_back(Dimension::dynamic());
+        }
+        else
+        {
+            out_dims.push_back(static_cast<int64_t>(
+                ceil(static_cast<float>(abs(int64_t(end_dms[i]) - int64_t(begin_dms[i])) + 1) /
+                     static_cast<float>(abs(int64_t(stride_dms[i]))))));
+        }
+
+        k++;
+    }
+    return out_dims;
+}

src/ngraph/validation_util.hpp

@@ -94,4 +94,15 @@ namespace ngraph
                             const op::PadType pad_type,
                             CoordinateDiff& padding_above,
                             CoordinateDiff& padding_below);
+
+    PartialShape infer_slice_shape(const Node* node,
+                                   const PartialShape& input_shape,
+                                   const std::vector<int64_t>& lb,
+                                   const std::vector<int64_t>& ub,
+                                   const std::vector<int64_t>& str,
+                                   const AxisSet& lb_mask,
+                                   const AxisSet& ub_mask,
+                                   const AxisSet& new_axis,
+                                   const AxisSet& shrink_mask,
+                                   const AxisSet& ellipsis_mask);
 }

test/CMakeLists.txt

@@ -167,6 +167,7 @@ set(MULTI_TEST_SRC
     backend_test.in.cpp
     backend_unary_elementwise.in.cpp
     convolution_test.in.cpp
+    dyn_replace_slice_test.in.cpp
     dyn_slice_test.in.cpp
     dynamic.in.cpp
 )

test/dyn_elimination.cpp

@@ -132,6 +132,56 @@ TEST(dyn_elimination, slice)
     ASSERT_EQ(f->get_results().at(0)->get_shape(), (Shape{2, 4, 2, 2, 1, 2, 2}));
 }
 
+TEST(dyn_elimination, replace_slice)
+{
+    // input has shape [2,4,6,8,2,2,2]
+    // slice in numpy syntax is [0:,:4,2:6:2,7:3:-2,np.newaxis,...,1]
+    // slice shape should be [2,4,2,2,1,2,2] (so sayeth numpy!)
+    Shape shape_in{2, 4, 6, 8, 2, 2, 2};
+    Shape shape_slice{2, 4, 2, 2, 1, 2, 2};
+    auto input = make_shared<op::Parameter>(element::f32, shape_in);
+    auto replacement = make_shared<op::Parameter>(element::f32, shape_slice);
+    auto constant_lb =
+        make_shared<op::Constant>(element::i64, Shape{7}, vector<int64_t>{0, 3, 2, 7, 0, 0, 1});
+    auto constant_ub =
+        make_shared<op::Constant>(element::i64, Shape{7}, vector<int64_t>{0, 4, 6, 3, 0, 0, 0});
+    auto constant_strides =
+        make_shared<op::Constant>(element::i64, Shape{7}, vector<int64_t>{1, 1, 2, -2, 0, 0, 0});
+    AxisSet lower_bounds_mask{1};
+    AxisSet upper_bounds_mask{0};
+    AxisSet new_axis_mask{4};
+    AxisSet shrink_mask{6};
+    AxisSet ellipsis_mask{5};
+
+    auto rsl = make_shared<op::DynReplaceSlice>(input,
+                                                replacement,
+                                                constant_lb,
+                                                constant_ub,
+                                                constant_strides,
+                                                lower_bounds_mask,
+                                                upper_bounds_mask,
+                                                new_axis_mask,
+                                                shrink_mask,
+                                                ellipsis_mask);
+
+    ASSERT_EQ(rsl->get_element_type(), element::f32);
+    ASSERT_EQ(rsl->get_shape(), (Shape{2, 4, 6, 8, 2, 2, 2}));
+
+    auto f = make_shared<Function>(rsl, ParameterVector{input, replacement});
+
+    pass::Manager pass_manager;
+    pass_manager.register_pass<pass::DynElimination>();
+    pass_manager.run_passes(f);
+
+    ASSERT_EQ(count_ops_of_type<op::DynReplaceSlice>(f), 0);
+    ASSERT_EQ(count_ops_of_type<op::ReplaceSlice>(f), 1);
+    ASSERT_EQ(count_ops_of_type<op::Reshape>(f), 1);
+    ASSERT_EQ(count_ops_of_type<op::Reverse>(f), 1);
+
+    ASSERT_EQ(f->get_results().at(0)->get_element_type(), element::f32);
+    ASSERT_EQ(f->get_results().at(0)->get_shape(), (Shape{2, 4, 6, 8, 2, 2, 2}));
+}
+
 TEST(dyn_elimination, reshape)
 {
     auto input_arg = make_shared<op::Parameter>(element::f32, Shape{2, 4, 6, 8});

test/update_dyn_replace_slice_reference.sh

+#!/bin/bash
+# ******************************************************************************
+# 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.
+# ******************************************************************************
+declare THIS_SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+python ${THIS_SCRIPT_DIR}/ref_generators/generate_dyn_replace_slice_ref.py ${THIS_SCRIPT_DIR}/dyn_replace_slice_test.in.cpp