Adding the build test for the neutron backend library.

Author: Github Executorch

.github/workflows/trunk.yml

@@ -245,7 +245,7 @@ jobs:
         toolchain_cmake=$(realpath ${toolchain_cmake})
 
         # Build and test size test
-        bash test/build_size_test.sh "-DCMAKE_TOOLCHAIN_FILE=${toolchain_cmake} -DEXECUTORCH_BUILD_ARM_BAREMETAL=ON"
+        bash test/build_size_test.sh "-DCMAKE_TOOLCHAIN_FILE=${toolchain_cmake} -DEXECUTORCH_BUILD_ARM_BAREMETAL=ON -DEXECUTORCH_BUILD_NXP_NEUTRON=ON"
         elf="cmake-out/test/size_test"
 
         # Dump basic info
@@ -271,6 +271,15 @@ jobs:
           exit 1
         fi
 
+        # Build check for the neutron backend library
+        lib_neutron = "cmake-out/backends/nxp/libexecutorch_delegate_neutron.a"
+        if [ ! -f $(lib_neutron) ]; then
+            echo "Neutron backend library not found!"
+            exit 1
+        else
+            echo "Neutron backend library built."
+        fi
+
   test-coreml-delegate:
     name: test-coreml-delegate
     uses: pytorch/test-infra/.github/workflows/macos_job.yml@main

backends/nxp/CMakeLists.txt

@@ -6,7 +6,9 @@
 set(
   _common_include_directories 
   ${CMAKE_CURRENT_SOURCE_DIR}/../../..
+  ${CMAKE_CURRENT_SOURCE_DIR}/../../runtime/core/portable_type/c10
 )
+add_compile_definitions(C10_USING_CUSTOM_GENERATED_MACROS)
 
 set(_neutron_sources ${CMAKE_CURRENT_SOURCE_DIR}/runtime/NeutronBackend.cpp )
 

backends/nxp/runtime/NeutronBackend.cpp

@@ -236,8 +236,8 @@ class NeutronBackend final : public PyTorchBackendInterface {
     //    cfg->mcfg.kernels
     const uint8_t* transpositionFlags =
         static_cast<const uint8_t*>(processed->data());
-    uint32_t numInputs = transpositionFlags[INPUT_TENSOR_FORMAT_LEN_POS];
-    uint32_t numOutputs = transpositionFlags[OUTPUT_TENSOR_FORMAT_LEN_POS];
+    int numInputs = transpositionFlags[INPUT_TENSOR_FORMAT_LEN_POS];
+    int numOutputs = transpositionFlags[OUTPUT_TENSOR_FORMAT_LEN_POS];
     cfg->inputTranspositionFlags =
         INPUT_TENSOR_FORMAT_ARRAY_ADDR(transpositionFlags);
     cfg->outputTranspositionFlags =