COMPMID-1995: Prepare Graph to support different input/output quantization info

- Added support for different input/output qinfo in ActivationLayer and DepthwiseConv
- Added support for different input/output qinfo in ConcatenateLayer introducing ConcatDescriptor
- Added reshape validate
- Allow OutputLayer to return a specific connection index from the input
- Not run Inplace and Depth mutator when input/output quantization info are different

Change-Id: I03f5e416fc43ddd284e1501887202a3145f76d8a
Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>
Reviewed-on: https://review.mlplatform.org/c/852
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/utils/GraphUtils.cpp b/utils/GraphUtils.cpp
index b714c55..26ea02a 100644
--- a/utils/GraphUtils.cpp
+++ b/utils/GraphUtils.cpp
@@ -153,24 +153,29 @@
 }
 
 template <typename T>
-void NumPyAccessor::access_numpy_tensor(ITensor &tensor)
+void NumPyAccessor::access_numpy_tensor(ITensor &tensor, T tolerance)
 {
     const int num_elements          = tensor.info()->tensor_shape().total_size();
-    int       num_mismatches        = utils::compare_tensor<T>(tensor, _npy_tensor);
+    int       num_mismatches        = utils::compare_tensor<T>(tensor, _npy_tensor, tolerance);
     float     percentage_mismatches = static_cast<float>(num_mismatches) / num_elements;
 
     _output_stream << "Results: " << 100.f - (percentage_mismatches * 100) << " % matches with the provided output[" << _filename << "]." << std::endl;
+    _output_stream << "         " << num_elements - num_mismatches << " out of " << num_elements << " matches with the provided output[" << _filename << "]." << std::endl
+                   << std::endl;
 }
 
 bool NumPyAccessor::access_tensor(ITensor &tensor)
 {
-    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(&tensor, 1, DataType::F32);
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(&tensor, 1, DataType::F32, DataType::QASYMM8);
     ARM_COMPUTE_ERROR_ON(_npy_tensor.info()->dimension(0) != tensor.info()->dimension(0));
 
     switch(tensor.info()->data_type())
     {
+        case DataType::QASYMM8:
+            access_numpy_tensor<qasymm8_t>(tensor, 0);
+            break;
         case DataType::F32:
-            access_numpy_tensor<float>(tensor);
+            access_numpy_tensor<float>(tensor, 0.0001f);
             break;
         default:
             ARM_COMPUTE_ERROR("NOT SUPPORTED!");
diff --git a/utils/GraphUtils.h b/utils/GraphUtils.h
index 131378e..4765676 100644
--- a/utils/GraphUtils.h
+++ b/utils/GraphUtils.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 ARM Limited.
+ * Copyright (c) 2017-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -160,7 +160,7 @@
 
 private:
     template <typename T>
-    void access_numpy_tensor(ITensor &tensor);
+    void access_numpy_tensor(ITensor &tensor, T tolerance);
 
     Tensor            _npy_tensor;
     const std::string _filename;
diff --git a/utils/Utils.h b/utils/Utils.h
index 04ccc3e..788ae4e 100644
--- a/utils/Utils.h
+++ b/utils/Utils.h
@@ -782,15 +782,16 @@
  */
 uint64_t get_mem_free_from_meminfo();
 
-/** Compare to tensor
+/** Compare two tensors
  *
- * @param[in] tensor1 First tensor to be compared.
- * @param[in] tensor2 Second tensor to be compared.
+ * @param[in] tensor1   First tensor to be compared.
+ * @param[in] tensor2   Second tensor to be compared.
+ * @param[in] tolerance Tolerance used for the comparison.
  *
  * @return The number of mismatches
  */
 template <typename T>
-int compare_tensor(ITensor &tensor1, ITensor &tensor2)
+int compare_tensor(ITensor &tensor1, ITensor &tensor2, T tolerance)
 {
     ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(&tensor1, &tensor2);
     ARM_COMPUTE_ERROR_ON_MISMATCHING_SHAPES(&tensor1, &tensor2);
@@ -807,7 +808,7 @@
 
     execute_window_loop(window, [&](const Coordinates & id)
     {
-        if(std::abs(*reinterpret_cast<T *>(itensor1.ptr()) - *reinterpret_cast<T *>(itensor2.ptr())) > 0.0001)
+        if(std::abs(*reinterpret_cast<T *>(itensor1.ptr()) - *reinterpret_cast<T *>(itensor2.ptr())) > tolerance)
         {
             ++num_mismatches;
         }