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CPU: remove AVX code, switch to __builtin for AES detection (#1959)

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* [cpu] remove avx detect and code blocks, try to switch to __builtin
* [cpu] use __builtin_* only on x86 systems
* [cpu] perform check in separate function
* [cpu] set AES definition on MSVC
* update x86 and aes support checks at compile time
* [cmake] update comment about AES on MSVC
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R4SAS 2023-08-31 16:52:51 +00:00 • committed by GitHub
parent 32c5ff23a6
commit 7b6aa41ca8
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11 changed files with 222 additions and 232 deletions
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29
libi2pd/Identity.cpp
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@ -803,29 +803,12 @@ namespace data
XORMetric operator^(const IdentHash& key1, const IdentHash& key2)
{
XORMetric m;
#if (defined(__x86_64__) || defined(__i386__)) && defined(__AVX__) // not all X86 targets supports AVX (like old Pentium, see #1600)
if(i2p::cpu::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
#endif
{
const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
m.metric_ll[0] = hash1[0] ^ hash2[0];
m.metric_ll[1] = hash1[1] ^ hash2[1];
m.metric_ll[2] = hash1[2] ^ hash2[2];
m.metric_ll[3] = hash1[3] ^ hash2[3];
}
const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
m.metric_ll[0] = hash1[0] ^ hash2[0];
m.metric_ll[1] = hash1[1] ^ hash2[1];
m.metric_ll[2] = hash1[2] ^ hash2[2];
m.metric_ll[3] = hash1[3] ^ hash2[3];
return m;
}