[GNA] New flags to select GNA target generation (#5429)

* New flags for GNA trget

* Add new flags to configuration

* Update utest

* Update speech_Sample

* Add unit tests

* Guard for wrong values

* Use gna execution target as consistent device

* Apply review

inference-engine/samples/speech_sample/main.cpp

@@ -760,6 +760,8 @@ int main(int argc, char* argv[]) {
             gnaPluginConfig[GNAConfigParams::KEY_GNA_PRECISION] = "I16";
         }
 
+        gnaPluginConfig[GNAConfigParams::KEY_GNA_EXEC_TARGET] = FLAGS_exec_target;
+        gnaPluginConfig[GNAConfigParams::KEY_GNA_COMPILE_TARGET] = FLAGS_compile_target;
         gnaPluginConfig[GNAConfigParams::KEY_GNA_LIB_N_THREADS] = std::to_string((FLAGS_cw_r > 0 || FLAGS_cw_l > 0) ? 1 : FLAGS_nthreads);
         gnaPluginConfig[GNA_CONFIG_KEY(COMPACT_MODE)] = CONFIG_VALUE(NO);
         gnaPluginConfig[GNA_CONFIG_KEY(PWL_MAX_ERROR_PERCENT)] = std::to_string(FLAGS_pwl_me);

inference-engine/samples/speech_sample/speech_sample.hpp

@@ -27,6 +27,20 @@ static const char target_device_message[] = "Optional. Specify a target device t
                                             "below. "
                                             "The sample will look for a suitable plugin for device specified.";
 
+/// @brief message for execution target
+static const char execution_target_message[] = "Optional. Specify GNA execution target generation. "
+                                               "May be one of GNA_TARGET_2_0, GNA_TARGET_3_0. "
+                                               "By default, generation corresponds to the GNA HW available in the system "
+                                               "or the latest fully supported generation by the software. "
+                                               "See the GNA Plugin's GNA_EXEC_TARGET config option description.";
+
+/// @brief message for execution target
+static const char compile_target_message[] = "Optional. Specify GNA compile target generation. "
+                                             "May be one of GNA_TARGET_2_0, GNA_TARGET_3_0. "
+                                             "By default, generation corresponds to the GNA HW available in the system "
+                                             "or the latest fully supported generation by the software. "
+                                             "See the GNA Plugin's GNA_COMPILE_TARGET config option description.";
+
 /// @brief message for performance counters
 static const char performance_counter_message[] = "Optional. Enables per-layer performance report.";
 
@@ -109,6 +123,12 @@ DEFINE_string(m, "", model_message);
 /// \brief device the target device to infer on (default CPU) <br>
 DEFINE_string(d, "CPU", target_device_message);
 
+/// \brief GNA execution target <br>
+DEFINE_string(exec_target, "", execution_target_message);
+
+/// \brief GNA compile target <br>
+DEFINE_string(compile_target, "", compile_target_message);
+
 /// \brief Enable per-layer performance report
 DEFINE_bool(pc, false, performance_counter_message);