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use AVX for DHT

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orignal 2016-12-08 15:23:40 -05:00
parent e08a26d015
commit 447f5f69c9
1 changed files with 14 additions and 0 deletions
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14
Identity.cpp
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@ -593,11 +593,25 @@ namespace data
XORMetric operator^(const IdentHash& key1, const IdentHash& key2) XORMetric operator^(const IdentHash& key1, const IdentHash& key2)
{ {
XORMetric m; XORMetric m;
#if defined(__AVX__) // for AVX
__asm__
(
"vmovups %1, %%ymm0 \n"
"vmovups %2, %%ymm1 \n"
"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
"vmovups %%ymm1, %0 \n"
: "=m"(*m.metric)
: "m"(*key1), "m"(*key2)
: "memory", "%xmm0", "%xmm1" // should be replaced by %ymm0/1 once supported by compiler
);
#else
const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL (); const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
m.metric_ll[0] = hash1[0] ^ hash2[0]; m.metric_ll[0] = hash1[0] ^ hash2[0];
m.metric_ll[1] = hash1[1] ^ hash2[1]; m.metric_ll[1] = hash1[1] ^ hash2[1];
m.metric_ll[2] = hash1[2] ^ hash2[2]; m.metric_ll[2] = hash1[2] ^ hash2[2];
m.metric_ll[3] = hash1[3] ^ hash2[3]; m.metric_ll[3] = hash1[3] ^ hash2[3];
#endif
return m; return m;
} }
} }