build cadence hifi flow as a stand-alone cmake dependency

Summary:
This PR enables
- stand-alone build of xtensa hifi kernels and runtime flow by build_cadence_xtensa.sh
- ported new slice-utils for slice op
- updated the xtensa build bash instruction
- removed unused hifi kernel header

Next pr will enable
- stand-alone build of cpu reference kernels and runtime flow by build_cadence_runner.sh

Differential Revision: D63281705

Author: zonglinpeng

backends/cadence/CMakeLists.txt

@@ -20,7 +20,6 @@ if(NOT EXECUTORCH_ROOT)
 endif()
 
 include(${EXECUTORCH_ROOT}/build/Utils.cmake)
-include(${EXECUTORCH_ROOT}/build/Codegen.cmake)
 
 # Let files say "include <executorch/path/to/header.h>".
 set(_common_include_directories ${EXECUTORCH_ROOT}/..)
@@ -30,54 +29,6 @@ if(EXECUTORCH_NNLIB_OPT)
   set(TARGET_DIR hifi)
   add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/third-party/nnlib)
 endif()
-set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
-# Source root directory for executorch.
-if(NOT EXECUTORCH_ROOT)
-  set(EXECUTORCH_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..)
-endif()
-
-if(NOT PYTHON_EXECUTABLE)
-  resolve_python_executable()
-endif()
-
-set(_common_compile_options -Wno-deprecated-declarations -fPIC)
-
-# Find prebuilt libraries. executorch package should contain portable_ops_lib,
-# etdump, bundled_program.
-find_package(executorch CONFIG REQUIRED)
-target_link_options_shared_lib(executorch)
-target_link_options_shared_lib(portable_ops_lib)
-
-target_include_directories(executorch INTERFACE ${_common_include_directories})
-
-find_package(
-  gflags REQUIRED PATHS ${CMAKE_CURRENT_BINARY_DIR}/../../third-party
-)
-
-add_executable(cadence_runner cadence_runner/cadence_runner.cpp)
-target_compile_options(executorch INTERFACE -DET_EVENT_TRACER_ENABLED)
 
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/operators)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/kernels)
-
-target_include_directories(
-  etdump INTERFACE ${CMAKE_CURRENT_BINARY_DIR}/../../sdk/include
-                   ${EXECUTORCH_ROOT}/third-party/flatcc/include
-)
-
-target_include_directories(
-  cadence_runner PUBLIC ${ROOT_DIR}/.. ${CMAKE_BINARY_DIR}
-                        ${_common_include_directories}
-)
-
-target_link_libraries(
-  cadence_runner
-  executorch
-  gflags
-  etdump
-  extension_data_loader
-  bundled_program
-  cadence_ops_lib
-  flatccrt
-)

backends/cadence/build_cadence_xtensa.sh

@@ -65,20 +65,19 @@ else
         -DEXECUTORCH_BUILD_HOST_TARGETS=ON \
         -DEXECUTORCH_BUILD_EXECUTOR_RUNNER=ON \
         -DEXECUTORCH_BUILD_PTHREADPOOL=OFF \
-        -DEXECUTORCH_BUILD_CADENCE=OFF \
+        -DEXECUTORCH_BUILD_CPUINFO=OFF \
+        -DEXECUTORCH_BUILD_FLATC=OFF \
+        -DEXECUTORCH_BUILD_CADENCE=ON \
         -DFLATC_EXECUTABLE="$(which flatc)" \
+        -DEXECUTORCH_BUILD_EXTENSION_RUNNER_UTIL=ON \
         -DEXECUTORCH_ENABLE_LOGGING=ON \
         -DEXECUTORCH_ENABLE_PROGRAM_VERIFICATION=ON \
         -DEXECUTORCH_USE_DL=OFF \
         -DBUILD_EXECUTORCH_PORTABLE_OPS=ON \
         -DEXECUTORCH_BUILD_KERNELS_CUSTOM=OFF \
         -DPYTHON_EXECUTABLE=python3 \
         -DEXECUTORCH_NNLIB_OPT=ON \
-        -DEXECUTORCH_BUILD_GFLAGS=ON \
         -DHAVE_FNMATCH_H=OFF \
-        -DEXECUTORCH_ENABLE_EVENT_TRACER=OFF \
-        -DEXECUTORCH_BUILD_EXTENSION_RUNNER_UTIL=ON \
-        -DEXECUTORCH_BUILD_CPUINFO=OFF \
         -Bcmake-out
     cmake --build cmake-out --target install --config Release -j16
 fi

backends/cadence/hifi/kernels/kernels.cpp

@@ -6,7 +6,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-#include <executorch/backends/cadence/hifi/kernels/kernels.h>
 #include <xa_nnlib_common.h>
 #include <xa_nnlib_common_macros.h>
 

backends/cadence/hifi/operators/CMakeLists.txt

@@ -28,6 +28,7 @@ set(_aten_ops__srcs
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/util/matmul_ops_util.cpp"
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/util/reduce_util.cpp"
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/util/repeat_util.cpp"
+    "${EXECUTORCH_ROOT}/kernels/portable/cpu/util/slice_util.cpp"
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/op_add.cpp"
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/op_bmm.cpp"
     "${EXECUTORCH_ROOT}/kernels/portable/cpu/op_cat.cpp"