Add meta-data to express dynamic shapes in ITensorInfo

Add `get_tensor_shape_state` and `set_tensor_shape_state` to inject
shape dynamism.
The state is represented by an array of integers which index maps to the
respective shape dimension index.
If -1 is passed as a dimension state then the corresponding dimension
is dynamic.

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I3a8a5ad109b90d4df8545b460a9f8dfcc13dfa0f
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4784
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/src/core/SubTensorInfo.cpp b/src/core/SubTensorInfo.cpp
index bb8ecf60ea..6279992e89 100644
--- a/src/core/SubTensorInfo.cpp
+++ b/src/core/SubTensorInfo.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020 Arm Limited.
+ * Copyright (c) 2017-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -56,12 +56,12 @@ TensorShape extend_parent_shape(TensorShape parent_shape, TensorShape shape, Coo
 } // namespace
 
 SubTensorInfo::SubTensorInfo()
-    : _parent(nullptr), _tensor_shape(), _coords(), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(false)
+    : _parent(nullptr), _tensor_shape(), _dims_state(), _coords(), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(false)
 {
 }
 
 SubTensorInfo::SubTensorInfo(ITensorInfo *parent, TensorShape tensor_shape, Coordinates coords, bool extend_parent)
-    : _parent(parent), _tensor_shape(tensor_shape), _coords(coords), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(extend_parent)
+    : _parent(parent), _tensor_shape(tensor_shape), _dims_state(), _coords(coords), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(extend_parent)
 {
     ARM_COMPUTE_ERROR_ON(parent == nullptr);
 
@@ -107,6 +107,13 @@ ITensorInfo &SubTensorInfo::set_tensor_shape(const TensorShape &shape)
     return *this;
 }
 
+ITensorInfo &SubTensorInfo::set_tensor_dims_state(const TensorDimsState &state)
+{
+    ARM_COMPUTE_ERROR_ON(_parent == nullptr);
+    _dims_state = state;
+    return *this;
+}
+
 bool SubTensorInfo::extend_padding(const PaddingSize &padding)
 {
     ARM_COMPUTE_ERROR_ON(_parent == nullptr);