From f75defa7676759fa81ae75e7edd492572c6b8fd6 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Thu, 13 Feb 2020 18:14:06 +0100 Subject: vppinfra: add 128-bit and 512-bit a ^ b ^ c shortcut This allows us to combine 2 XOR operations into signle instruction which makes difference in crypto op: - in x86, by using ternary logic instruction - on ARM, by using EOR3 instruction (available with sha3 feature) Type: refactor Change-Id: Ibdf9001840399d2f838d491ca81b57cbd8430433 Signed-off-by: Damjan Marion --- src/vppinfra/vector_avx512.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/vppinfra/vector_avx512.h') diff --git a/src/vppinfra/vector_avx512.h b/src/vppinfra/vector_avx512.h index c54d8cd2499..29d96f85ce9 100644 --- a/src/vppinfra/vector_avx512.h +++ b/src/vppinfra/vector_avx512.h @@ -143,6 +143,13 @@ u64x8_permute (u64x8 a, u64x8 b, u64x8 mask) #define u32x16_ternary_logic(a, b, c, d) \ (u32x16) _mm512_ternarylogic_epi32 ((__m512i) a, (__m512i) b, (__m512i) c, d) +static_always_inline u8x64 +u8x64_xor3 (u8x64 a, u8x64 b, u8x64 c) +{ + return (u8x64) _mm512_ternarylogic_epi32 ((__m512i) a, (__m512i) b, + (__m512i) c, 0x96); +} + static_always_inline void u32x16_transpose (u32x16 m[16]) { -- cgit 1.2.3-korg