diff options
| author |   Damjan Marion <damarion@cisco.com> | 2017-11-10 21:55:45 +0100 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2017-11-13 16:14:50 +0000 |
| commit | 04f3db3847d242857b9d9d858bcdca538a1be7d7 (patch) | |
| tree | e0304ad2a3986698d62e9a164f5a0a28565cef01 /src/configure.ac | |
| parent | 2d8bf304230102a6d9b312b98315418617798175 (diff) | |
dpdk: introduce AVX512 variants of node functions
Change-Id: If581feca0d51d0420c971801aecdf9250c671b36
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/configure.ac')
| -rw-r--r-- | src/configure.ac | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/configure.ac b/src/configure.ac index ee4985b5471..b5546a7c2e8 100644 --- a/src/configure.ac +++ b/src/configure.ac @@ -119,6 +119,22 @@ AC_DEFUN([DETECT_DPDK_IS_1702_OR_1705], AM_CONDITIONAL(DPDK_IS_1702_OR_1705, test "$dpdk_is_1702_or_1705" = "yes") ]) +# Check if compiler supports specific flag +AC_DEFUN([CC_CHECK_FLAG], +[ + AC_MSG_CHECKING([if $CC supports $1]) + AC_LANG_PUSH([C]) + ac_saved_cflags="$CFLAGS" + CFLAGS="-Werror $1" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [c_flag_check=yes], + [c_flag_check=no] +) + AC_MSG_RESULT([$c_flag_check]) + CFLAGS="$ac_saved_cflags" + AC_LANG_POP([C]) +]) + ############################################################################### # configure arguments ############################################################################### @@ -164,6 +180,20 @@ AC_ARG_WITH(pre-data, # Target CPU flags ############################################################################### +# Check if compiler supports march=core-avx2 +CC_CHECK_FLAG("-march=core-avx2") +AS_IF([test "$cc_flag_check" = yes], + [march_core_avx2=yes], + [march_core_avx2=no]) +AM_CONDITIONAL([CC_SUPPORTS_AVX2], [test "$march_core_avx2" = "yes"]) + +# Check if compiler supports march=skylake-avx512 +CC_CHECK_FLAG("-march=skylake-avx512") +AS_IF([test "$cc_flag_check" = yes], + [march_skylake_avx512=yes], + [march_skylake_avx512=no]) +AM_CONDITIONAL([CC_SUPPORTS_AVX512], [test "$march_skylake_avx512" = "yes"]) + AS_CASE([$build_cpu], [x86_64], [CPU_FLAGS="-march=corei7 -mtune=corei7-avx"], [aarch64], [CPU_FLAGS="-march=armv8-a+crc"], @@ -171,6 +201,12 @@ AS_CASE([$build_cpu], ) AC_SUBST([CPU_FLAGS]) +AC_SUBST([CPU_AVX2_FLAGS],"-march=core-avx2 -mtune=core-avx2") +AC_SUBST([CPU_AVX512_FLAGS],"-march=skylake-avx512 -mtune=skylake-avx512") + +AM_CONDITIONAL([CPU_X86_64], [test "$build_cpu" = "x86_64"]) +AM_CONDITIONAL([CPU_AARCH64], [test "$build_cpu" = "aarch64"]) + ############################################################################### # Substitutions and defines ############################################################################### |