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Adding HiFi5 DSP support in Cadence backend #21497

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70c70f2
Adding HiFi5 support
dijopaul Jul 30, 2026
01ee163
Add HiFi5 support in Cadence backend - fix review comments
dijopaul Jul 31, 2026
e0158e1
Merge branch 'main' into main
dijopaul Jul 31, 2026
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13 changes: 13 additions & 0 deletions backends/cadence/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,19 @@ if(EXECUTORCH_NNLIB_OPT)
${EXECUTORCH_ROOT}/runtime/core/portable_type/c10
)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/kernels)
elseif(
EXECUTORCH_HIFI_CORE STREQUAL "hifi1"
OR EXECUTORCH_HIFI_CORE STREQUAL "hifi4"
OR EXECUTORCH_HIFI_CORE STREQUAL "hifi5"
)
if(EXECUTORCH_HIFI_CORE STREQUAL "hifi5")
add_compile_definitions(CORE_HIFI5=1)
else()
add_compile_definitions(CORE_HIFI5=0)
endif()
set(TARGET_DIR hifi)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/third-party/nnlib)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${TARGET_DIR}/kernels)
elseif(EXECUTORCH_FUSION_G3_OPT)
set(TARGET_DIR fusion_g3)
add_subdirectory(
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4 changes: 2 additions & 2 deletions backends/cadence/cadence.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -42,10 +42,10 @@ set(CMAKE_C_COMPILER ${TOOLCHAIN_HOME}/bin/${CROSS_COMPILE_TARGET}-clang)
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_HOME}/bin/${CROSS_COMPILE_TARGET}-clang++)

set(CMAKE_C_FLAGS_INIT
"-stdlib=libc++ -mtext-section-literals -mlongcalls -DET_ENABLE_ENUM_STRINGS=0"
"-stdlib=libc++ -mtext-section-literals -mlongcalls -DET_ENABLE_ENUM_STRINGS=0 -O3 -mcoproc -LNO:simd -ffunction-sections -fsigned-char -INLINE:requested -fno-zero-initialized-in-bss -fmessage-length=0"
)
set(CMAKE_CXX_FLAGS_INIT
"-stdlib=libc++ -mtext-section-literals -mlongcalls -DET_ENABLE_ENUM_STRINGS=0"
"-stdlib=libc++ -mtext-section-literals -mlongcalls -DET_ENABLE_ENUM_STRINGS=0 -O3 -mcoproc -LNO:simd -ffunction-sections -fsigned-char -INLINE:requested -fno-zero-initialized-in-bss -fmessage-length=0"
)
# workaround for larger compilation time
set(CMAKE_CXX_FLAGS_INIT "${CMAKE_CXX_FLAGS_INIT} -fno-strict-aliasing")
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16 changes: 12 additions & 4 deletions backends/cadence/hifi/kernels/CMakeLists.txt
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Expand Up @@ -23,14 +23,22 @@ set(_common_include_directories
${EXECUTORCH_ROOT}/.. ${EXECUTORCH_ROOT}/runtime/core/portable_type/c10
)

if(EXECUTORCH_HIFI_CORE STREQUAL "hifi5")
set(NNLIB_DIR_NAME "nnlib-hifi5")
set(NNLIB_ARCH_DIR "hifi5")
else()
set(NNLIB_DIR_NAME "nnlib-hifi4")
set(NNLIB_ARCH_DIR "hifi4")
endif()

target_include_directories(
cadence_kernels
PUBLIC
.
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/nnlib-hifi4/xa_nnlib/algo/common/include/
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/nnlib-hifi4/xa_nnlib/include/nnlib
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/nnlib-hifi4/xa_nnlib/include
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/nnlib-hifi4/xa_nnlib/algo/ndsp/hifi4/include/
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/${NNLIB_DIR_NAME}/xa_nnlib/algo/common/include/
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/${NNLIB_DIR_NAME}/xa_nnlib/include/nnlib
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/${NNLIB_DIR_NAME}/xa_nnlib/include
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/${NNLIB_DIR_NAME}/xa_nnlib/algo/ndsp/${NNLIB_ARCH_DIR}/include/
${_common_include_directories}
)

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5 changes: 5 additions & 0 deletions backends/cadence/hifi/kernels/kernels.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,12 @@

#include <executorch/backends/cadence/hifi/kernels/kernels.h>
#include <xa_nnlib_common.h>

#if CORE_HIFI5
#include <xa_nnlib_common_macros_hifi5.h>
#else
#include <xa_nnlib_common_macros.h>
#endif

namespace impl {
namespace HiFi {
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8 changes: 7 additions & 1 deletion backends/cadence/hifi/third-party/nnlib/CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,11 +1,17 @@
cmake_minimum_required(VERSION 3.10.0)
project(cadence_nnlib)

if(EXECUTORCH_HIFI_CORE STREQUAL "hifi5")
set(NNLIB_DIR_NAME "nnlib-hifi5")
else()
set(NNLIB_DIR_NAME "nnlib-hifi4")
endif()

add_custom_target(
nnlib_target ALL
COMMAND
make install_nnlib -f makefile -C
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/nnlib-hifi4/xa_nnlib/build
${EXECUTORCH_ROOT}/backends/cadence/hifi/third-party/nnlib/${NNLIB_DIR_NAME}/xa_nnlib/build
OBJDIR=${CMAKE_CURRENT_BINARY_DIR}/obj
LIBDIR=${CMAKE_CURRENT_BINARY_DIR}/lib -j8
)
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6 changes: 5 additions & 1 deletion backends/cadence/hifi/third-party/nnlib/xa_nn_reduce_32_32.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,11 @@
#include "xa_nnlib_common.h"
#include <string.h>
//#include "xa_nn_basic_state.h"
#include "xa_nnlib_common_macros.h"
#if CORE_HIFI5
#include <xa_nnlib_common_macros_hifi5.h>
#else
#include <xa_nnlib_common_macros.h>
#endif

#define ALIGNMENT_8 8

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27 changes: 15 additions & 12 deletions backends/cadence/install_requirements.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -10,28 +10,31 @@ green=`tput setaf 2`

EXECUTORCH_ROOT_PATH=$(realpath "$SCRIPT_DIR_PATH/../../")
CADENCE_DIR_PATH="$EXECUTORCH_ROOT_PATH/backends/cadence"
HIFI_DIR_PATH="$CADENCE_DIR_PATH/hifi/third-party/nnlib/nnlib-hifi4"
FUSION_DIR_PATH="$CADENCE_DIR_PATH/fusion_g3/third-party/nnlib/nnlib-FusionG3"
FACTO_DIR_PATH="$CADENCE_DIR_PATH/utils/FACTO"

cd "$EXECUTORCH_ROOT_PATH"

## HiFi

rm -rf "$HIFI_DIR_PATH"
mkdir -p "$HIFI_DIR_PATH"
targets=(hifi4 hifi5)

echo "${green}ExecuTorch: Cloning hifi nnlib"
git clone "https://github.com/foss-xtensa/nnlib-hifi4.git" $HIFI_DIR_PATH
cd $HIFI_DIR_PATH
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "${red}ExecuTorch: Failed to clone hifi nnlib."
exit 1
fi
for target in ${targets[@]};
do
TARGET_DIR_PATH="$CADENCE_DIR_PATH/hifi/third-party/nnlib/nnlib-$target"

git checkout 64d73d729797388b0e346794d7a2e408374a74de
rm -rf "$TARGET_DIR_PATH"
mkdir -p "$TARGET_DIR_PATH"

echo "${green}ExecuTorch: Cloning $target nnlib"
git clone "https://github.com/foss-xtensa/nnlib-$target.git" $TARGET_DIR_PATH
cd $TARGET_DIR_PATH
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "${red}ExecuTorch: Failed to clone $target nnlib."
exit 1
fi
done

## Fusion G3

Expand Down
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