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[Qemu-devel] [PATCH 2/2] configure: add --enable-avx2 option
From: |
Liang Li |
Subject: |
[Qemu-devel] [PATCH 2/2] configure: add --enable-avx2 option |
Date: |
Fri, 28 Aug 2015 16:54:13 +0800 |
Add the --enable-avx2 option so as to enable the AVX2
instruction optimization for buffer_find_nonzero_offset().
Signed-off-by: Liang Li <address@hidden>
---
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