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| author |   Damjan Marion <damjan.marion@gmail.com> | 2020-02-13 18:14:06 +0100 |
|---|---|---|
| committer | Damjan Marion <damjan.marion@gmail.com> | 2020-02-13 18:17:54 +0100 |
| commit | f75defa7676759fa81ae75e7edd492572c6b8fd6 (patch) | |
| tree | da5eecdcdec868d14d81db8c59e2d1271899d49b /src/vppinfra/vector_avx512.h | |
| parent | adcfb15fa0b08403c5b5b170149f7d3662e65761 (diff) | |
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 <damjan.marion@gmail.com>
Diffstat (limited to 'src/vppinfra/vector_avx512.h')
| -rw-r--r-- | src/vppinfra/vector_avx512.h | 7 |
1 files changed, 7 insertions, 0 deletions
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]) { |