diff options
| author | Jeff Garzik <jeff@garzik.org> | 2011-01-29 00:36:32 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2011-01-29 00:36:32 -0500 |
| commit | 8504cf48031a98a4f76f0602098e000f369be704 (patch) | |
| tree | d372d412d2ecad10efdba4212a51ad4e1fea50da | |
| parent | e41171424ab1c4430f78f81b08797ab79e8ddd9a (diff) | |
sha256_4way minor optimizations
http://www.bitcoin.org/smf/index.php?topic=820.msg40022#msg40022
Credit: BeeCee1
| -rw-r--r-- | sha256_4way.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sha256_4way.c b/sha256_4way.c index b196e8d..e272ea4 100644 --- a/sha256_4way.c +++ b/sha256_4way.c @@ -73,7 +73,7 @@ static inline void store_epi32(const __m128i x, unsigned int *x0, unsigned int * *x0 = box.ret[3]; *x1 = box.ret[2]; *x2 = box.ret[1]; *x3 = box.ret[0]; } -#define add4(x0, x1, x2, x3) _mm_add_epi32(_mm_add_epi32(_mm_add_epi32(x0, x1), x2), x3) +#define add4(x0, x1, x2, x3) _mm_add_epi32(_mm_add_epi32(x0, x1),_mm_add_epi32( x2,x3)) #define add5(x0, x1, x2, x3, x4) _mm_add_epi32(add4(x0, x1, x2, x3), x4) #define SHA256ROUND(a, b, c, d, e, f, g, h, i, w) \ @@ -150,12 +150,14 @@ static void DoubleBlockSHA256(const void* pin, void* pad, const void *pre, unsig __m128i w8, w9, w10, w11, w12, w13, w14, w15; __m128i T1; __m128i a, b, c, d, e, f, g, h; - __m128i nonce; + __m128i nonce, preNonce; /* nonce offset for vector */ __m128i offset = _mm_set_epi32(0x00000003, 0x00000002, 0x00000001, 0x00000000); + preNonce = _mm_add_epi32(_mm_set1_epi32(In[3]), offset); + for(k = 0; k<NPAR; k+=4) { w0 = _mm_set1_epi32(In[0]); w1 = _mm_set1_epi32(In[1]); @@ -175,9 +177,7 @@ static void DoubleBlockSHA256(const void* pin, void* pad, const void *pre, unsig w15 = _mm_set1_epi32(In[15]); /* hack nonce into lowest byte of w3 */ - nonce = _mm_set1_epi32(In[3]); - nonce = _mm_add_epi32(nonce, offset); - nonce = _mm_add_epi32(nonce, _mm_set1_epi32(k)); + nonce = _mm_add_epi32(preNonce, _mm_set1_epi32(k)); w3 = nonce; a = _mm_set1_epi32(hPre[0]); |