diff options
| author |   Damjan Marion <damarion@cisco.com> | 2018-05-23 20:21:51 +0200 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2018-05-25 11:44:43 +0000 |
| commit | 1cf9a165fc80b2f8109f85d5bd121e0c7c397e58 (patch) | |
| tree | 207e20914dc9edab3f2f225377e2c1af9d476190 /src/vppinfra/bihash_40_8.h | |
| parent | d57f63698f99fad0288ac040d83b3ecd380d4bfd (diff) | |
Vectorized bihash_{48,40,24,16}_8 key compare
bihash_48_8 case:
Scalar code: 6 clocks
SSE4.2 code: 3 clocks
AVX2 code: 2.27 clocks
AVX512 code: 1.5 clocks
Change-Id: I40700175835a1e7321276e47eadbf9771d3c5a68
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vppinfra/bihash_40_8.h')
| -rw-r--r-- | src/vppinfra/bihash_40_8.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/vppinfra/bihash_40_8.h b/src/vppinfra/bihash_40_8.h index 974a78d8cef..2e633fae27d 100644 --- a/src/vppinfra/bihash_40_8.h +++ b/src/vppinfra/bihash_40_8.h @@ -67,10 +67,27 @@ format_bihash_kvp_40_8 (u8 * s, va_list * args) } static inline int -clib_bihash_key_compare_40_8 (const u64 * a, const u64 * b) +clib_bihash_key_compare_40_8 (u64 * a, u64 * b) { +#if defined (CLIB_HAVE_VEC512) + u64x8 v; + v = u64x8_load_unaligned (a) ^ u64x8_load_unaligned (b); + return (u64x8_is_zero_mask (v) & 0x1f) == 0; +#elif defined (CLIB_HAVE_VEC256) + u64x4 v; + v = u64x4_load_unaligned (a) ^ u64x4_load_unaligned (b); + v |= u64x4_load_unaligned (a + 1) ^ u64x4_load_unaligned (b + 1); + return u64x4_is_all_zero (v); +#elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE) + u64x2 v; + v = u64x2_load_unaligned (a) ^ u64x2_load_unaligned (b); + v |= u64x2_load_unaligned (a + 2) ^ u64x2_load_unaligned (b + 2); + v |= u64x2_load_unaligned (a + 3) ^ u64x2_load_unaligned (b + 3); + return u64x2_is_all_zero (v); +#else return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3]) | (a[4] ^ b[4])) == 0; +#endif } #undef __included_bihash_template_h__ |