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ggml-cpu: cmake add arm64 cpu feature check for macos #10487

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merged 2 commits into from
Nov 26, 2024
Merged

ggml-cpu: cmake add arm64 cpu feature check for macos #10487

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ggml-cpu: cmake add arm64 cpu feature check for macos
chaxu01 Nov 25, 2024
ac90ee3
use vmmlaq_s32 for compile option i8mm check
chaxu01 Nov 26, 2024
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33 changes: 33 additions & 0 deletions ggml/src/ggml-cpu/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,39 @@ if (CMAKE_OSX_ARCHITECTURES STREQUAL "arm64" OR
endif ()

set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_PREV})
elseif (APPLE)
if (GGML_NATIVE)
set(USER_PROVIDED_MARCH FALSE)
foreach(flag_var IN ITEMS CMAKE_C_FLAGS CMAKE_CXX_FLAGS CMAKE_REQUIRED_FLAGS)
if ("${${flag_var}}" MATCHES "-march=[a-zA-Z0-9+._-]+")
set(USER_PROVIDED_MARCH TRUE)
break()
endif()
endforeach()

if (NOT USER_PROVIDED_MARCH)
set(MARCH_FLAGS "-march=armv8.2a")

check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vdotq_s32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_DOTPROD)
if (GGML_COMPILER_SUPPORT_DOTPROD)
set(MARCH_FLAGS "${MARCH_FLAGS}+dotprod")
add_compile_definitions(__ARM_FEATURE_DOTPROD)
endif ()

set(TEST_I8MM_FLAGS "-march=armv8.2a+i8mm")

set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${TEST_I8MM_FLAGS}")
check_cxx_source_compiles("#include <arm_neon.h>\nint main() { int8x16_t _a, _b; int32x4_t _s = vmmlaq_s32(_s, _a, _b); return 0; }" GGML_COMPILER_SUPPORT_MATMUL_INT8)
if (GGML_COMPILER_SUPPORT_MATMUL_INT8)
set(MARCH_FLAGS "${MARCH_FLAGS}+i8mm")
add_compile_definitions(__ARM_FEATURE_MATMUL_INT8)
endif ()
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})

list(APPEND ARCH_FLAGS "${MARCH_FLAGS}")
endif ()
endif ()
else()
check_cxx_compiler_flag(-mfp16-format=ieee COMPILER_SUPPORTS_FP16_FORMAT_I3E)
if (NOT "${COMPILER_SUPPORTS_FP16_FORMAT_I3E}" STREQUAL "")
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