[dpdk-dev] [PATCH] acl: fix build with GCC 6.3

[Thomas Monjalon]

21/05/2021 16:42, Konstantin Ananyev:
> --buildtype=debug with gcc 6.3 produces the following error:
> 
> ../lib/librte_acl/acl_run_avx512_common.h: In function
> ‘resolve_match_idx_avx512x16’:
> ../lib/librte_acl/acl_run_avx512x16.h:33:18: error:
> 	the last argument must be an 8-bit immediate
>                                ^
> ../lib/librte_acl/acl_run_avx512_common.h:373:9: note:
> 	in expansion of macro ‘_M_I_’
>       return _M_I_(slli_epi32)(mi, match_log);
>              ^~~~~
> 
> Seems like gcc-6.3 complains about the following construct:
> 
> static const uint32_t match_log = 5;
>     ...
> _mm512_slli_epi32(mi, match_log);
> 
> It can't substitute constant variable 'match_log' with its actual value.
> The fix replaces constant variable with its immediate value.
> 
> Bugzilla ID: 717
> Fixes: b64c2295f7fc ("acl: add 256-bit AVX512 classify method")
> Fixes: 45da22e42ec3 ("acl: add 512-bit AVX512 classify method")
> Cc: stable at dpdk.org
> 
> Reported-by: Liang Ma <liangma at liangbit.com>
> Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>

Applied, thanks