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optimization to double hash tweak

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aegroto 2018-04-16 01:39:27 +02:00
parent 1c42d6c159
commit 33e710d591
1 changed files with 1 additions and 2 deletions
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3
src/crypto/CryptoNight_x86.h
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@ -398,8 +398,7 @@ static inline void cryptonight_monero_tweak(uint64_t* mem_out, __m128i tmp)
uint8_t x = vh >> 24; uint8_t x = vh >> 24;
static const uint16_t table = 0x7531; static const uint16_t table = 0x7531;
const uint8_t index = (((x >> 3) & 6) | (x & 1)) << 1; vh ^= ((table >> ((((x >> 3) & 6) | (x & 1)) << 1)) & 0x3) << 28;
vh ^= ((table >> index) & 0x3) << 28;
mem_out[1] = vh; mem_out[1] = vh;
} }