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Interrupt building system on machines without AVX512. #8

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Merged
merged 1 commit into from
May 13, 2020
Merged

Interrupt building system on machines without AVX512. #8

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8 changes: 8 additions & 0 deletions cmake/CPU.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,14 @@ SET(DNNL_ENABLE_PRIMITIVE_CACHE TRUE CACHE BOOL "" FORCE)
set(DPCPP_CPU_ROOT "${PROJECT_SOURCE_DIR}/torch_ipex/csrc/cpu")
add_subdirectory(${DPCPP_THIRD_PARTY_ROOT}/mkl-dnn)

list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/Modules)

FIND_PACKAGE(AVX)

IF (NOT C_AVX512_FOUND)
message(FATAL_ERROR "Please build IPEX on Machines that support AVX512.")
ENDIF()

# Define build type
IF(CMAKE_BUILD_TYPE MATCHES Debug)
message("Debug build.")
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47 changes: 47 additions & 0 deletions cmake/Modules/FindAVX.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
INCLUDE(CheckCSourceCompiles)
INCLUDE(CheckCXXSourceCompiles)

SET(AVX512_CODE "
#include <stdint.h>
#include <immintrin.h>

int main() {
__m256i src;
__mmask16 mask;
int16_t addr[16];
// detect avx512f, avx512bw and avx512vl.
_mm512_cvtepi16_epi32(_mm256_mask_loadu_epi16(src, mask, (void *)addr));
return 0;
}
")

MACRO(CHECK_SSE lang type flags)
SET(__FLAG_I 1)
SET(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
FOREACH(__FLAG ${flags})
IF(NOT ${lang}_${type}_FOUND)
SET(CMAKE_REQUIRED_FLAGS ${__FLAG})
IF(lang STREQUAL "CXX")
CHECK_CXX_SOURCE_COMPILES("${${type}_CODE}" ${lang}_HAS_${type}_${__FLAG_I})
ELSE()
CHECK_C_SOURCE_COMPILES("${${type}_CODE}" ${lang}_HAS_${type}_${__FLAG_I})
ENDIF()
IF(${lang}_HAS_${type}_${__FLAG_I})
SET(${lang}_${type}_FOUND TRUE CACHE BOOL "${lang} ${type} support")
SET(${lang}_${type}_FLAGS "${__FLAG}" CACHE STRING "${lang} ${type} flags")
ENDIF()
MATH(EXPR __FLAG_I "${__FLAG_I}+1")
ENDIF()
ENDFOREACH()
SET(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})

IF(NOT ${lang}_${type}_FOUND)
SET(${lang}_${type}_FOUND FALSE CACHE BOOL "${lang} ${type} support")
SET(${lang}_${type}_FLAGS "" CACHE STRING "${lang} ${type} flags")
ENDIF()

MARK_AS_ADVANCED(${lang}_${type}_FOUND ${lang}_${type}_FLAGS)
ENDMACRO()

CHECK_SSE(C "AVX512" " ;-mavx512f -mavx512bw -mavx512vl ;/arch:AVX512")
CHECK_SSE(CXX "AVX512" " ;-mavx512f -mavx512bw -mavx512vl ;/arch:AVX512")