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| author | fireice-uk <fireice-uk@users.noreply.github.com> | 2017-04-26 18:02:58 +0100 |
|---|---|---|
| committer | fireice-uk <fireice-uk@users.noreply.github.com> | 2017-04-26 18:02:58 +0100 |
| commit | 4ab9f0907f764fb98874037faa5b5468aed8d6ed (patch) | |
| tree | 6f85a7a8cd7085f54eef1d8c9cd962ff9e6e487c | |
| parent | ec1e41cd8c78492ac5c657d0434d84bd9c491fb5 (diff) | |
| download | xmr-stak-4ab9f0907f764fb98874037faa5b5468aed8d6ed.zip xmr-stak-4ab9f0907f764fb98874037faa5b5468aed8d6ed.tar.gz | |
Extend prefetch option.
| -rw-r--r-- | crypto/cryptonight_aesni.h | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/crypto/cryptonight_aesni.h b/crypto/cryptonight_aesni.h index 6d990d3..6d8479c 100644 --- a/crypto/cryptonight_aesni.h +++ b/crypto/cryptonight_aesni.h @@ -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 |
