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Add detection code for avx

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Howard Su 2023-04-01 16:32:14 +08:00
parent d2beca95dc
commit 997c749065
1 changed files with 108 additions and 0 deletions
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108
CMakeLists.txt
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@ -64,6 +64,114 @@ option(LLAMA_OPENBLAS "llama: use OpenBLAS"
option(LLAMA_BUILD_TESTS "llama: build tests" ${LLAMA_STANDALONE})
option(LLAMA_BUILD_EXAMPLES "llama: build examples" ${LLAMA_STANDALONE})
INCLUDE(CheckCSourceRuns)
SET(AVX_CODE "
#include <immintrin.h>
int main()
{
__m256 a;
a = _mm256_set1_ps(0);
return 0;
}
")
SET(AVX512_CODE "
#include <immintrin.h>
int main()
{
__m512i a = _mm512_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
__m512i b = a;
__mmask64 equality_mask = _mm512_cmp_epi8_mask(a, b, _MM_CMPINT_EQ);
return 0;
}
")
SET(AVX2_CODE "
#include <immintrin.h>
int main()
{
__m256i a = {0};
a = _mm256_abs_epi16(a);
__m256i x;
_mm256_extract_epi64(x, 0); // we rely on this in our AVX2 code
return 0;
}
")
SET(FMA_CODE "
#include <immintrin.h>
int main()
{
__m256 acc = _mm256_setzero_ps();
const __m256 d = _mm256_setzero_ps();
const __m256 p = _mm256_setzero_ps();
acc = _mm256_fmadd_ps( d, p, acc );
return 0;
}
")
MACRO(CHECK_SSE type flags)
SET(__FLAG_I 1)
SET(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
FOREACH(__FLAG ${flags})
IF(NOT ${type}_FOUND)
SET(CMAKE_REQUIRED_FLAGS ${__FLAG})
CHECK_C_SOURCE_RUNS("${${type}_CODE}" HAS_${type}_${__FLAG_I})
IF(HAS_${type}_${__FLAG_I})
SET(${type}_FOUND TRUE CACHE BOOL "${type} support")
SET(${type}_FLAGS "${__FLAG}" CACHE STRING "${type} flags")
ENDIF()
MATH(EXPR __FLAG_I "${__FLAG_I}+1")
ENDIF()
ENDFOREACH()
SET(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
IF(NOT ${type}_FOUND)
SET(${type}_FOUND FALSE CACHE BOOL "${type} support")
SET(${type}_FLAGS "" CACHE STRING "${type} flags")
ENDIF()
MARK_AS_ADVANCED(${type}_FOUND ${type}_FLAGS)
ENDMACRO()
CHECK_SSE("AVX" " ;-mavx;/arch:AVX")
CHECK_SSE("AVX2" " ;-mavx2 -mfma;/arch:AVX2")
CHECK_SSE("AVX512" " ;-mavx512f -mavx512dq -mavx512vl -mavx512bw -mfma;/arch:AVX512")
CHECK_SSE("FMA" " ;-mfma;")
IF(${AVX_FOUND})
set(LLAMA_AVX ON)
ELSE()
set(LLAMA_AVX OFF)
ENDIF()
IF (${FMA_FOUND})
set(LLAMA_FMA ON)
ELSE()
set(LLAMA_FMA OFF)
ENDIF()
IF(${AVX2_FOUND})
set(LLAMA_AVX2 ON)
ELSE()
set(LLAMA_AVX2 OFF)
ENDIF()
IF(${AVX512_FOUND})
set(LLAMA_AVX512 ON)
ELSE()
set(LLAMA_AVX512 OFF)
ENDIF()
#
# Compile flags
#