[luci/service] Migrate Reshape shape inference rule to sinf::Algorithm

This commit migrates Reshape shape inference rule to sinf::Algorithm.

ONE-DCO-1.0-Signed-off-by: Jongwon Yang <[email protected]>

compiler/luci/service/include/luci/Service/CircleShapeInference.h

@@ -122,7 +122,7 @@ class Algorithm final : public luci::CircleNodeVisitor<loco::TensorShape>
   // loco::TensorShape visit(const luci::CircleRelu0To1 *node) final;
   // loco::TensorShape visit(const luci::CircleRelu6 *node) final;
   // loco::TensorShape visit(const luci::CircleReluN1To1 *node) final;
-  // loco::TensorShape visit(const luci::CircleReshape *node) final;
+  loco::TensorShape visit(const luci::CircleReshape *node) final;
   // loco::TensorShape visit(const luci::CircleResizeBilinear *node) final;
   // loco::TensorShape visit(const luci::CircleResizeNearestNeighbor *node) final;
   // loco::TensorShape visit(const luci::CircleReverseSequence *node) final;

compiler/luci/service/src/CircleShapeInferenceRule.cpp

@@ -996,84 +996,6 @@ loco::NodeShape infer_range(const luci::CircleRange *node)
   return loco::NodeShape{output_shape};
 }
 
-loco::NodeShape infer_reshape(const luci::CircleReshape *node)
-{
-  LOGGER(l);
-
-  const loco::DataType S32 = loco::DataType::S32;
-
-  loco::TensorShape shape_by_input;
-  {
-    LUCI_ASSERT(node->shape(), "2nd input shape() should not be nullptr");
-
-    // Only support node's shape() is CircleConst with S32
-    // TODO support other node with other types
-    auto const_shape_node = dynamic_cast<luci::CircleConst *>(node->shape());
-    if (const_shape_node != nullptr)
-    {
-      LUCI_ASSERT(const_shape_node->dtype() == S32, "Only support int32 CircleConst");
-
-      shape_by_input.rank(const_shape_node->size<S32>());
-
-      for (uint32_t axis = 0; axis < shape_by_input.rank(); ++axis)
-      {
-        shape_by_input.dim(axis) = const_shape_node->at<S32>(axis);
-      }
-    }
-    else
-    {
-      // We use shape from the node itself
-      shape_by_input = own_shape(node);
-    }
-  }
-
-  loco::TensorShape shape_by_attr;
-  {
-    shape_by_attr.rank(node->newShape()->rank());
-
-    for (uint32_t axis = 0; axis < shape_by_attr.rank(); ++axis)
-    {
-      shape_by_attr.dim(axis) = node->newShape()->dim(axis);
-    }
-  }
-
-  if (!(shape_by_input == shape_by_attr))
-  {
-    INFO(l) << "CircleReshape: Two new shape information mismatched : " << std::endl;
-    INFO(l) << "   shape_by_input : " << shape_by_input << std::endl;
-    INFO(l) << "   shape_by_attr : " << shape_by_attr << std::endl;
-  }
-
-  loco::TensorShape output_shape = shape_by_input;
-
-  // One of the dimensions can have special value -1, meaning its actual value should be inferred.
-  const auto input_shape = luci::shape_get(node->tensor()).as<loco::TensorShape>();
-  uint32_t input_element_count = 1;
-  uint32_t output_element_count = 1;
-  uint32_t unknown_dim_index = UINT32_MAX;
-  for (uint32_t i = 0; i < input_shape.rank(); ++i)
-    input_element_count *= (input_shape.dim(i).known() ? input_shape.dim(i).value() : 1);
-  for (uint32_t dim_index = 0; dim_index < output_shape.rank(); ++dim_index)
-  {
-    const uint32_t dim_value = output_shape.dim(dim_index).value();
-    if (static_cast<int>(dim_value) == -1)
-    {
-      LUCI_ASSERT(unknown_dim_index == UINT32_MAX, "More than one unknown dimension");
-      unknown_dim_index = dim_index;
-    }
-    else
-    {
-      output_element_count *= dim_value;
-    }
-  }
-  if (unknown_dim_index != UINT32_MAX)
-  {
-    output_shape.dim(unknown_dim_index) = input_element_count / output_element_count;
-  }
-
-  return loco::NodeShape{output_shape};
-}
-
 template <class CIRCLENODE> loco::NodeShape infer_resize_type(const CIRCLENODE *node)
 {
   auto input_shape = luci::shape_get(node->input()).template as<loco::TensorShape>();
@@ -2230,15 +2152,6 @@ class ShapeInferenceAlgorithm final : public luci::CircleNodeVisitor<loco::NodeS
     return loco::NodeShape{input_shape};
   }
 
-  /**
-   * @note  CircleReshape has new shape info in two places: 2nd input and attribute.
-   *        This shape inference uses shape from input 'shape' node when it's constant.
-   *        If not, shape will be from node itself. shape from attribute is not used.
-   *
-   * TODO Change this policy when not appropriate
-   */
-  loco::NodeShape visit(const luci::CircleReshape *node) final { return infer_reshape(node); }
-
   loco::NodeShape visit(const luci::CircleResizeBilinear *node) final
   {
     return infer_resize_type(node);

compiler/luci/service/src/Nodes/CircleReshape.cpp

@@ -14,8 +14,36 @@
  * limitations under the License.
  */
 
+#include "luci/Service/CircleShapeInference.h"
+#include "Check.h"
+
+#include "CircleShapeInferenceHelper.h"
 #include "CircleCloneNode.h"
 
+#include <luci/Log.h>
+
+namespace
+{
+
+std::ostream &operator<<(std::ostream &os, const loco::TensorShape &tensor_shape)
+{
+  os << "[";
+  for (uint32_t r = 0; r < tensor_shape.rank(); ++r)
+  {
+    if (r)
+      os << ",";
+
+    if (tensor_shape.dim(r).known())
+      os << tensor_shape.dim(r).value();
+    else
+      os << "?";
+  }
+  os << "]";
+  return os;
+}
+
+} // namespace
+
 namespace luci
 {
 
@@ -34,4 +62,107 @@ luci::CircleNode *CloneNodeLet<CN::OPQR>::visit(const luci::CircleReshape *node)
   return cloned;
 }
 
+namespace sinf
+{
+
+/**
+ * @note  CircleReshape has new shape info in two places: 2nd input and attribute.
+ *        This shape inference uses shape from input 'shape' node when it's constant.
+ *        If not, shape will be from node itself. shape from attribute is not used.
+ *
+ * TODO Change this policy when not appropriate
+ */
+loco::TensorShape Algorithm::visit(const luci::CircleReshape *node)
+{
+  LOGGER(l);
+
+  const loco::DataType S32 = loco::DataType::S32;
+
+  loco::TensorShape shape_by_input;
+  {
+    LUCI_ASSERT(node->shape(), "2nd input shape() should not be nullptr");
+
+    // Only support node's shape() is CircleConst with S32
+    // TODO support other node with other types
+    auto const_shape_node = dynamic_cast<luci::CircleConst *>(node->shape());
+    if (const_shape_node != nullptr)
+    {
+      LUCI_ASSERT(const_shape_node->dtype() == S32, "Only support int32 CircleConst");
+
+      shape_by_input.rank(const_shape_node->size<S32>());
+
+      for (uint32_t axis = 0; axis < shape_by_input.rank(); ++axis)
+      {
+        shape_by_input.dim(axis) = const_shape_node->at<S32>(axis);
+      }
+    }
+    else
+    {
+      // We use shape from the node itself
+      loco::TensorShape shape;
+      shape.rank(node->rank());
+      for (uint32_t r = 0; r < node->rank(); ++r)
+      {
+        // Shape inference rules in this file did not consider unknown dimension.
+        // If some node has unknown dimension, 0 is inserted and wrong shape
+        // inference was done as a result.
+        // To fix this, new shape inference algorithm is being implemented.
+        // Until new inference algorithm is fully implemented, unknown dimension
+        // would be represented as 1 along with TFLite expression.
+        shape.dim(r) = node->dim(r).known() ? node->dim(r).value() : 1;
+      }
+      shape_by_input = shape;
+    }
+  }
+
+  loco::TensorShape shape_by_attr;
+  {
+    shape_by_attr.rank(node->newShape()->rank());
+
+    for (uint32_t axis = 0; axis < shape_by_attr.rank(); ++axis)
+    {
+      shape_by_attr.dim(axis) = node->newShape()->dim(axis);
+    }
+  }
+
+  if (!(shape_by_input == shape_by_attr))
+  {
+    INFO(l) << "CircleReshape: Two new shape information mismatched : " << std::endl;
+    INFO(l) << "   shape_by_input : " << shape_by_input << std::endl;
+    INFO(l) << "   shape_by_attr : " << shape_by_attr << std::endl;
+  }
+
+  loco::TensorShape output_shape = shape_by_input;
+
+  // One of the dimensions can have special value -1, meaning its actual value should be inferred.
+  const auto input = loco::must_cast<luci::CircleNode *>(node->tensor());
+  const auto input_shape = circle_shape(input);
+  uint32_t input_element_count = 1;
+  uint32_t output_element_count = 1;
+  uint32_t unknown_dim_index = UINT32_MAX;
+  for (uint32_t i = 0; i < input_shape.rank(); ++i)
+    input_element_count *= (input_shape.dim(i).known() ? input_shape.dim(i).value() : 1);
+  for (uint32_t dim_index = 0; dim_index < output_shape.rank(); ++dim_index)
+  {
+    const uint32_t dim_value = output_shape.dim(dim_index).value();
+    if (static_cast<int>(dim_value) == -1)
+    {
+      LUCI_ASSERT(unknown_dim_index == UINT32_MAX, "More than one unknown dimension");
+      unknown_dim_index = dim_index;
+    }
+    else
+    {
+      output_element_count *= dim_value;
+    }
+  }
+  if (unknown_dim_index != UINT32_MAX)
+  {
+    output_shape.dim(unknown_dim_index) = input_element_count / output_element_count;
+  }
+
+  return output_shape;
+}
+
+} // namespace sinf
+
 } // namespace luci

compiler/luci/service/src/Nodes/CircleReshape.test.cpp

@@ -15,6 +15,7 @@
  */
 
 #include "luci/Service/CircleNodeClone.h"
+#include "luci/Service/CircleShapeInference.h"
 
 #include <gtest/gtest.h>