Add the --enable-avx2 option so as to enable the AVX2 instruction optimization for buffer_find_nonzero_offset().
Signed-off-by: Liang Li <liang.z...@intel.com> --- configure | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/configure b/configure index 9d24d59..ee84172 100755 --- a/configure +++ b/configure @@ -307,6 +307,7 @@ smartcard_nss="" libusb="" usb_redir="" opengl="" +avx2="no" zlib="yes" lzo="" snappy="" @@ -1052,6 +1053,8 @@ for opt do ;; --enable-usb-redir) usb_redir="yes" ;; + --enable-avx2) avx2="yes" + ;; --disable-zlib-test) zlib="no" ;; --disable-lzo) lzo="no" @@ -1354,6 +1357,7 @@ disabled with --disable-FEATURE, default is enabled if available: smartcard-nss smartcard nss support libusb libusb (for usb passthrough) usb-redir usb network redirection support + avx2 support of avx2 instruction lzo support of lzo compression library snappy support of snappy compression library bzip2 support of bzip2 compression library @@ -1758,6 +1762,13 @@ EOF fi fi +######################################## +# avx2 check + +if test "$avx2" = "yes" ; then + CFLAGS="$CFLAGS -mavx2" +fi + ########################################## # zlib check @@ -4589,6 +4600,7 @@ echo "libssh2 support $libssh2" echo "TPM passthrough $tpm_passthrough" echo "QOM debugging $qom_cast_debug" echo "vhdx $vhdx" +echo "avx2 support $avx2" echo "lzo support $lzo" echo "snappy support $snappy" echo "bzip2 support $bzip2" @@ -4962,6 +4974,10 @@ if test "$opengl" = "yes" ; then echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak fi +if test "$avx2" = "yes" ; then + echo "CONFIG_AVX2=y" >> $config_host_mak +fi + if test "$lzo" = "yes" ; then echo "CONFIG_LZO=y" >> $config_host_mak fi -- 1.9.1