@@ -1382,6 +1382,11 @@ for opt do
;;
--enable-avx2) avx2_opt="yes"
;;
+ --disable-avx512f) avx512f_opt="no"
+ ;;
+ --enable-avx512f) avx512f_opt="yes"
+ ;;
+
--enable-glusterfs) glusterfs="yes"
;;
--disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
@@ -1811,6 +1816,7 @@ disabled with --disable-FEATURE, default is enabled if available:
tcmalloc tcmalloc support
jemalloc jemalloc support
avx2 AVX2 optimization support
+ avx512f AVX512F optimization support
replication replication support
opengl opengl support
virglrenderer virgl rendering support
@@ -5481,6 +5487,34 @@ EOF
fi
fi
+##########################################
+# avx512f optimization requirement check
+#
+# There is no point enabling this if cpuid.h is not usable,
+# since we won't be able to select the new routines.
+
+if test "$cpuid_h" = "yes" && test "$avx512f_opt" != "no"; then
+ cat > $TMPC << EOF
+#pragma GCC push_options
+#pragma GCC target("avx512f")
+#include <cpuid.h>
+#include <immintrin.h>
+static int bar(void *a) {
+ __m512i x = *(__m512i *)a;
+ return _mm512_test_epi64_mask(x, x);
+}
+int main(int argc, char *argv[])
+{
+ return bar(argv[0]);
+}
+EOF
+ if compile_object "" ; then
+ avx512f_opt="yes"
+ else
+ avx512f_opt="no"
+ fi
+fi
+
########################################
# check if __[u]int128_t is usable.
@@ -6605,6 +6639,7 @@ echo "libxml2 $libxml2"
echo "tcmalloc support $tcmalloc"
echo "jemalloc support $jemalloc"
echo "avx2 optimization $avx2_opt"
+echo "avx512f optimization $avx512f_opt"
echo "replication support $replication"
echo "VxHS block device $vxhs"
echo "bochs support $bochs"
@@ -7152,6 +7187,10 @@ if test "$avx2_opt" = "yes" ; then
echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
fi
+if test "$avx512f_opt" = "yes" ; then
+ echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
+fi
+
if test "$lzo" = "yes" ; then
echo "CONFIG_LZO=y" >> $config_host_mak
fi
Like previous avx2_opt option, config-host.mak will have CONFIG_AVX512F_OPT defined if compiling host has the ability. AVX512F instruction set is available since Intel Skylake. More info: https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf Signed-off-by: Robert Hoo <robert.hu@linux.intel.com> --- configure | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)