COMPMID-2779: Add support for generating synthetic int8 graphs.

Adds SyntheticDataTypeMutator, which is responsible for mutating graphs
to int8 and thus enable performance analysis on a wider range of models.

Change-Id: I9a00f0ae59421ab11952660f5115b5dcd9314aaf
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2418
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
diff --git a/examples/graph_vgg16.cpp b/examples/graph_vgg16.cpp
index d58bf6c..2c7f614 100644
--- a/examples/graph_vgg16.cpp
+++ b/examples/graph_vgg16.cpp
@@ -65,9 +65,6 @@
             return false;
         }
 
-        // Checks
-        ARM_COMPUTE_EXIT_ON_MSG(arm_compute::is_data_type_quantized_asymmetric(common_params.data_type), "QASYMM8 not supported for this graph");
-
         // Print parameter values
         std::cout << common_params << std::endl;
 
@@ -224,10 +221,11 @@
 
         // Finalize graph
         GraphConfig config;
-        config.num_threads = common_params.threads;
-        config.use_tuner   = common_params.enable_tuner;
-        config.tuner_mode  = common_params.tuner_mode;
-        config.tuner_file  = common_params.tuner_file;
+        config.num_threads      = common_params.threads;
+        config.use_tuner        = common_params.enable_tuner;
+        config.tuner_mode       = common_params.tuner_mode;
+        config.tuner_file       = common_params.tuner_file;
+        config.convert_to_uint8 = (common_params.data_type == DataType::QASYMM8);
 
         graph.finalize(common_params.target, config);