add cpu example to auto clang-format. (#2866)

Author: xuhancn

CMakeLists.txt

@@ -18,6 +18,7 @@ set(IPEX_ROOT_DIR ${PROJECT_SOURCE_DIR})
 set(IPEX_CSRC_ROOT_DIR ${IPEX_ROOT_DIR}/csrc)
 set(IPEX_CPU_ROOT_DIR ${IPEX_ROOT_DIR}/csrc/cpu)
 set(IPEX_GPU_ROOT_DIR ${IPEX_ROOT_DIR}/csrc/gpu)
+set(IPEX_CPU_EXAMPLE_ROOT_DIR ${IPEX_ROOT_DIR}/examples/cpu)
 set(IPEX_THIRD_PARTY_ROOT "${PROJECT_SOURCE_DIR}/third_party")
 set(IPEX_FRONT_END_ROOT_DIR ${IPEX_ROOT_DIR}/intel_extension_for_pytorch/csrc)
 list(APPEND CMAKE_MODULE_PATH ${IPEX_ROOT_DIR}/cmake/Modules)

csrc/cpu/CMakeLists.txt

@@ -153,6 +153,11 @@ if(CLANG_FORMAT)
   file(GLOB_RECURSE ALL_CPU_NATIVE_CSRC_FILES ${IPEX_CPU_ROOT_DIR}/**.[ch] ${IPEX_CPU_ROOT_DIR}/**.[ch]pp)
   add_custom_target(CL_FORMAT_CPU_NATIVE_CSRC COMMAND ${CLANG_FORMAT_EXEC} -i -style=file ${ALL_CPU_NATIVE_CSRC_FILES})
   add_dependencies(${PLUGIN_NAME_CPU} CL_FORMAT_CPU_NATIVE_CSRC)
+
+  # clang-foamt CPU examples
+  file(GLOB_RECURSE ALL_CPU_EXAMPLE_NATIVE_CSRC_FILES ${IPEX_CPU_EXAMPLE_ROOT_DIR}/**.[ch] ${IPEX_CPU_EXAMPLE_ROOT_DIR}/**.[ch]pp)
+  add_custom_target(CL_FORMAT_CPU_EXAMPLE_NATIVE_CSRC COMMAND ${CLANG_FORMAT_EXEC} -i -style=file ${ALL_CPU_EXAMPLE_NATIVE_CSRC_FILES})
+  add_dependencies(${PLUGIN_NAME_CPU} CL_FORMAT_CPU_EXAMPLE_NATIVE_CSRC)
 endif()
 
 if(USE_LIBXSMM)