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Extend prefetch option.

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fireice-uk
2017-04-26 18:02:58 +01:00
parent ec1e41cd8c
commit 4ab9f0907f
1 changed files with 22 additions and 12 deletions
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crypto/cryptonight_aesni.h
+22 -12
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@@ -149,7 +149,7 @@ static inline void soft_aes_round(__m128i key, __m128i* x0, __m128i* x1, __m128i
*x7 = soft_aesenc(*x7, key);
}
template<size_t MEM, bool SOFT_AES>
template<size_t MEM, bool SOFT_AES, bool PREFETCH>
void cn_explode_scratchpad(const __m128i* input, __m128i* output)
{
// This is more than we have registers, compiler will assign 2 keys on the stack
@@ -200,16 +200,21 @@ void cn_explode_scratchpad(const __m128i* input, __m128i* output)
_mm_store_si128(output + i + 1, xin1);
_mm_store_si128(output + i + 2, xin2);
_mm_store_si128(output + i + 3, xin3);
_mm_prefetch((const char*)output + i + 0, _MM_HINT_T2);
if(PREFETCH)
_mm_prefetch((const char*)output + i + 0, _MM_HINT_T2);
_mm_store_si128(output + i + 4, xin4);
_mm_store_si128(output + i + 5, xin5);
_mm_store_si128(output + i + 6, xin6);
_mm_store_si128(output + i + 7, xin7);
_mm_prefetch((const char*)output + i + 4, _MM_HINT_T2);
if(PREFETCH)
_mm_prefetch((const char*)output + i + 4, _MM_HINT_T2);
}
}
template<size_t MEM, bool SOFT_AES>
template<size_t MEM, bool SOFT_AES, bool PREFETCH>
void cn_implode_scratchpad(const __m128i* input, __m128i* output)
{
// This is more than we have registers, compiler will assign 2 keys on the stack
@@ -229,12 +234,17 @@ void cn_implode_scratchpad(const __m128i* input, __m128i* output)
for (size_t i = 0; i < MEM / sizeof(__m128i); i += 8)
{
_mm_prefetch((const char*)input + i + 0, _MM_HINT_NTA);
if(PREFETCH)
_mm_prefetch((const char*)input + i + 0, _MM_HINT_NTA);
xout0 = _mm_xor_si128(_mm_load_si128(input + i + 0), xout0);
xout1 = _mm_xor_si128(_mm_load_si128(input + i + 1), xout1);
xout2 = _mm_xor_si128(_mm_load_si128(input + i + 2), xout2);
xout3 = _mm_xor_si128(_mm_load_si128(input + i + 3), xout3);
_mm_prefetch((const char*)input + i + 4, _MM_HINT_NTA);
if(PREFETCH)
_mm_prefetch((const char*)input + i + 4, _MM_HINT_NTA);
xout4 = _mm_xor_si128(_mm_load_si128(input + i + 4), xout4);
xout5 = _mm_xor_si128(_mm_load_si128(input + i + 5), xout5);
xout6 = _mm_xor_si128(_mm_load_si128(input + i + 6), xout6);
@@ -284,7 +294,7 @@ void cryptonight_hash(const void* input, size_t len, void* output, cryptonight_c
keccak((const uint8_t *)input, len, ctx0->hash_state, 200);
// Optim - 99% time boundary
cn_explode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx0->hash_state, (__m128i*)ctx0->long_state);
cn_explode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx0->hash_state, (__m128i*)ctx0->long_state);
uint8_t* l0 = ctx0->long_state;
uint64_t* h0 = (uint64_t*)ctx0->hash_state;
@@ -332,7 +342,7 @@ void cryptonight_hash(const void* input, size_t len, void* output, cryptonight_c
}
// Optim - 90% time boundary
cn_implode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx0->long_state, (__m128i*)ctx0->hash_state);
cn_implode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx0->long_state, (__m128i*)ctx0->hash_state);
// Optim - 99% time boundary
@@ -350,8 +360,8 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
keccak((const uint8_t *)input+len, len, ctx1->hash_state, 200);
// Optim - 99% time boundary
cn_explode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx0->hash_state, (__m128i*)ctx0->long_state);
cn_explode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx1->hash_state, (__m128i*)ctx1->long_state);
cn_explode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx0->hash_state, (__m128i*)ctx0->long_state);
cn_explode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx1->hash_state, (__m128i*)ctx1->long_state);
uint8_t* l0 = ctx0->long_state;
uint64_t* h0 = (uint64_t*)ctx0->hash_state;
@@ -425,8 +435,8 @@ void cryptonight_double_hash(const void* input, size_t len, void* output, crypto
}
// Optim - 90% time boundary
cn_implode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx0->long_state, (__m128i*)ctx0->hash_state);
cn_implode_scratchpad<MEM, SOFT_AES>((__m128i*)ctx1->long_state, (__m128i*)ctx1->hash_state);
cn_implode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx0->long_state, (__m128i*)ctx0->hash_state);
cn_implode_scratchpad<MEM, SOFT_AES, PREFETCH>((__m128i*)ctx1->long_state, (__m128i*)ctx1->hash_state);
// Optim - 99% time boundary