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authorDamjan Marion <damarion@cisco.com>2018-05-23 20:21:51 +0200
committerDamjan Marion <dmarion.lists@gmail.com>2018-05-25 11:44:43 +0000
commit1cf9a165fc80b2f8109f85d5bd121e0c7c397e58 (patch)
tree207e20914dc9edab3f2f225377e2c1af9d476190 /src/vppinfra/bihash_40_8.h
parentd57f63698f99fad0288ac040d83b3ecd380d4bfd (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.h19
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__