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Add framework for implementation of support for AVX512VNNI #3894

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Add framework for implementation of support for AVX512VNNI #3894

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99cc865
Test whether OS supports AVX512
stweil Aug 6, 2022
5703419
Implement intSimdMatrixAVX512VNNI (dummy)
stweil Aug 5, 2022
8d0bd68
Add unittest for AVX512VNNI
stweil Aug 6, 2022
232093f
Add the needed changes to support AVX512VNNI
amitdo Aug 9, 2022
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8 changes: 8 additions & 0 deletions Makefile.am
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Expand Up @@ -170,6 +170,14 @@ libtesseract_la_LIBADD += libtesseract_avx512.la
noinst_LTLIBRARIES += libtesseract_avx512.la
endif

if HAVE_AVX512VNNI
libtesseract_avx512vnni_la_CXXFLAGS = -mavx512vnni -mavx512vl
libtesseract_avx512vnni_la_CXXFLAGS += -I$(top_srcdir)/src/ccutil
libtesseract_avx512vnni_la_SOURCES = src/arch/intsimdmatrixavx512vnni.cpp
libtesseract_la_LIBADD += libtesseract_avx512vnni.la
noinst_LTLIBRARIES += libtesseract_avx512vnni.la
endif

if HAVE_FMA
libtesseract_fma_la_CXXFLAGS = -mfma
libtesseract_fma_la_CXXFLAGS += -I$(top_srcdir)/src/ccutil
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7 changes: 7 additions & 0 deletions configure.ac
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Expand Up @@ -130,6 +130,7 @@ AX_CHECK_COMPILE_FLAG([-Werror=unused-command-line-argument], [WERROR=-Werror=un
AM_CONDITIONAL([HAVE_AVX], false)
AM_CONDITIONAL([HAVE_AVX2], false)
AM_CONDITIONAL([HAVE_AVX512F], false)
AM_CONDITIONAL([HAVE_AVX512VNNI], false)
AM_CONDITIONAL([HAVE_FMA], false)
AM_CONDITIONAL([HAVE_SSE4_1], false)
AM_CONDITIONAL([HAVE_NEON], false)
Expand All @@ -156,6 +157,12 @@ case "${host_cpu}" in
AC_DEFINE([HAVE_AVX512F], [1], [Enable AVX512F instructions])
fi

AX_CHECK_COMPILE_FLAG([-mavx512vnni], [avx512vnni=true], [avx512vnni=false], [$WERROR])
AM_CONDITIONAL([HAVE_AVX512VNNI], $avx512vnni)
if $avx512vnni; then
AC_DEFINE([HAVE_AVX512VNNI], [1], [Enable AVX512VNNI instructions])
fi

AX_CHECK_COMPILE_FLAG([-mfma], [fma=true], [fma=false], [$WERROR])
AM_CONDITIONAL([HAVE_FMA], $fma)
if $fma; then
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1 change: 1 addition & 0 deletions src/arch/intsimdmatrix.h
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Expand Up @@ -117,6 +117,7 @@ struct TESS_API IntSimdMatrix {
static const IntSimdMatrix intSimdMatrixNEON;
// Only available with AVX2 / AVX / FMA / SSE.
static const IntSimdMatrix intSimdMatrixAVX2;
static const IntSimdMatrix intSimdMatrixAVX512VNNI;
static const IntSimdMatrix intSimdMatrixSSE;
};

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