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| author | Cian Ferriter <cian.ferriter@intel.com> | 2022-08-11 10:36:38 +0000 |
|---|---|---|
| committer | Ian Stokes <ian.stokes@intel.com> | 2022-08-12 09:52:20 +0100 |
| commit | ac1332216eb3a1857b942457e1b44a22512b092d (patch) | |
| tree | 5e98605fdc92d139bf0c406127cde10259d1d4cb /acinclude.m4 | |
| parent | 39364e11dd2cf722a037de25705b352272173f21 (diff) | |
| download | openvswitch-ac1332216eb3a1857b942457e1b44a22512b092d.tar.gz | |
acinclude: Improve vpopcntdq build check.
Support for vpopcntdq instruction generation by the compiler was already
checked in the OVS_CHECK_AVX512 AC function by checking if the compiler
accepted the -mavx512vpopcntdq option. However, there can be situations
where the compiler supports vpopcntdq generation but the assembler
doesn't support the instruction.
The below OVS_CHECK_AVX512VPOPCNTDQ AC function will check for both
compiler and assembler support for the vpopcntdq instruction.
Fixes: cb1c64007734 ("acinclude: Add seperate checks for AVX512 ISA.")
Reported-by: Ian Stokes <ian.stokes@intel.com>
Signed-off-by: Cian Ferriter <cian.ferriter@intel.com>
Acked-by: Sunil Pai G <sunil.pai.g@intel.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index d9a33f583..30b82aae2 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -101,7 +101,7 @@ AC_DEFUN([OVS_CHECK_AVX512], [ OVS_CONDITIONAL_CC_OPTION_DEFINE([-mavx512bw], [HAVE_AVX512BW]) OVS_CONDITIONAL_CC_OPTION_DEFINE([-mavx512vl], [HAVE_AVX512VL]) OVS_CONDITIONAL_CC_OPTION_DEFINE([-mavx512vbmi], [HAVE_AVX512VBMI]) - OVS_CONDITIONAL_CC_OPTION_DEFINE([-mavx512vpopcntdq], [HAVE_AVX512VPOPCNTDQ]) + OVS_CHECK_AVX512VPOPCNTDQ ]) dnl OVS_ENABLE_WERROR |