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optimize double hash implementation

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use single hash implementation within the function `cryptonight_double_hash`
This commit is contained in:
psychocrypt
2017-05-31 22:34:46 +02:00
parent 650d848029
commit cd1e7f52bd
1 changed files with 29 additions and 19 deletions
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crypto/cryptonight_aesni.h
+29 -19
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@@ -368,9 +368,11 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
uint8_t* l1 = ctx1->long_state;
uint64_t* h1 = (uint64_t*)ctx1->hash_state;
__m128i ax0 = _mm_set_epi64x(h0[1] ^ h0[5], h0[0] ^ h0[4]);
uint64_t axl0 = h0[0] ^ h0[4];
uint64_t axh0 = h0[1] ^ h0[5];
__m128i bx0 = _mm_set_epi64x(h0[3] ^ h0[7], h0[2] ^ h0[6]);
__m128i ax1 = _mm_set_epi64x(h1[1] ^ h1[5], h1[0] ^ h1[4]);
uint64_t axl1 = h1[0] ^ h1[4];
uint64_t axh1 = h1[1] ^ h1[5];
__m128i bx1 = _mm_set_epi64x(h1[3] ^ h1[7], h1[2] ^ h1[6]);
uint64_t idx0 = h0[0] ^ h0[4];
@@ -383,9 +385,9 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
cx = _mm_load_si128((__m128i *)&l0[idx0 & 0x1FFFF0]);
if(SOFT_AES)
cx = soft_aesenc(cx, ax0);
cx = soft_aesenc(cx, _mm_set_epi64x(axh0, axl0));
else
cx = _mm_aesenc_si128(cx, ax0);
cx = _mm_aesenc_si128(cx, _mm_set_epi64x(axh0, axl0));
_mm_store_si128((__m128i *)&l0[idx0 & 0x1FFFF0], _mm_xor_si128(bx0, cx));
idx0 = _mm_cvtsi128_si64(cx);
@@ -397,9 +399,9 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
cx = _mm_load_si128((__m128i *)&l1[idx1 & 0x1FFFF0]);
if(SOFT_AES)
cx = soft_aesenc(cx, ax1);
cx = soft_aesenc(cx, _mm_set_epi64x(axh1, axl1));
else
cx = _mm_aesenc_si128(cx, ax1);
cx = _mm_aesenc_si128(cx, _mm_set_epi64x(axh1, axl1));
_mm_store_si128((__m128i *)&l1[idx1 & 0x1FFFF0], _mm_xor_si128(bx1, cx));
idx1 = _mm_cvtsi128_si64(cx);
@@ -408,27 +410,35 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
if(PREFETCH)
_mm_prefetch((const char*)&l1[idx1 & 0x1FFFF0], _MM_HINT_T0);
uint64_t hi, lo;
cx = _mm_load_si128((__m128i *)&l0[idx0 & 0x1FFFF0]);
uint64_t hi, lo, cl, ch;
cl = ((uint64_t*)&l0[idx0 & 0x1FFFF0])[0];
ch = ((uint64_t*)&l0[idx0 & 0x1FFFF0])[1];
lo = _umul128(idx0, _mm_cvtsi128_si64(cx), &hi);
lo = _umul128(idx0, cl, &hi);
ax0 = _mm_add_epi64(ax0, _mm_set_epi64x(lo, hi));
_mm_store_si128((__m128i*)&l0[idx0 & 0x1FFFF0], ax0);
ax0 = _mm_xor_si128(ax0, cx);
idx0 = _mm_cvtsi128_si64(ax0);
axl0 += hi;
axh0 += lo;
((uint64_t*)&l0[idx0 & 0x1FFFF0])[0] = axl0;
((uint64_t*)&l0[idx0 & 0x1FFFF0])[1] = axh0;
axh0 ^= ch;
axl0 ^= cl;
idx0 = axl0;
if(PREFETCH)
_mm_prefetch((const char*)&l0[idx0 & 0x1FFFF0], _MM_HINT_T0);
cx = _mm_load_si128((__m128i *)&l1[idx1 & 0x1FFFF0]);
cl = ((uint64_t*)&l1[idx1 & 0x1FFFF0])[0];
ch = ((uint64_t*)&l1[idx1 & 0x1FFFF0])[1];
lo = _umul128(idx1, _mm_cvtsi128_si64(cx), &hi);
lo = _umul128(idx1, cl, &hi);
ax1 = _mm_add_epi64(ax1, _mm_set_epi64x(lo, hi));
_mm_store_si128((__m128i*)&l1[idx1 & 0x1FFFF0], ax1);
ax1 = _mm_xor_si128(ax1, cx);
idx1 = _mm_cvtsi128_si64(ax1);
axl1 += hi;
axh1 += lo;
((uint64_t*)&l1[idx1 & 0x1FFFF0])[0] = axl1;
((uint64_t*)&l1[idx1 & 0x1FFFF0])[1] = axh1;
axh1 ^= ch;
axl1 ^= cl;
idx1 = axl1;
if(PREFETCH)
_mm_prefetch((const char*)&l1[idx1 & 0x1FFFF0], _MM_HINT_T0);