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>

1 files changed, 9 insertions, 2 deletions

diff --git a/src/graph/mutators/NodeFusionMutator.cpp b/src/graph/mutators/NodeFusionMutator.cpp
index 5927a597bb..724307e7b7 100644
--- a/src/graph/mutators/NodeFusionMutator.cpp
+++ b/src/graph/mutators/NodeFusionMutator.cpp
@@ -211,10 +211,17 @@ void NodeFusionMutator::mutate(Graph &g)
     {
         return true;
     };
-    auto qs8_prec = [](INode & n)
+    auto qs8_prec = [&g](INode & n)
     {
         ARM_COMPUTE_ERROR_ON(n.output(0) == nullptr);
-        return n.output(0)->desc().data_type == DataType::QASYMM8;
+
+        const auto output_edge_id = *n.output_edges().begin();
+        const auto output_edge    = g.edge(output_edge_id);
+        // To perform fusion the two nodes must have same output quantization information
+        const bool same_qinfo     = n.output(0)->desc().quant_info == output_edge->producer()->output(0)->desc().quant_info;
+        const bool output_qasymm8 = n.output(0)->desc().data_type == DataType::QASYMM8;
+
+        return output_qasymm8 && same_qinfo;
     };
 
     // Fusion mutations