Timerix/DTLib.XXHash
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Fix _MM_SHUFFLE

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This commit is contained in:
Oleksandr Melnyk 2022-06-05 14:25:32 +03:00
parent ab1a2055b7
commit e0e94a4610
2 changed files with 7 additions and 10 deletions
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6
src/Standart.Hash.xxHash/xxHash128.XXH.cs
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@ -127,11 +127,5 @@ namespace Standart.Hash.xxHash
{
*(ulong*) dst = v64;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static byte _MM_SHUFFLE(byte p3, byte p2, byte p1, byte p0)
{
return (byte)((p3 << 6) | (p2 << 4) | (p1 << 2) | p0);
}
}
}

9
src/Standart.Hash.xxHash/xxHash128.XXH3.cs
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@ -389,6 +389,8 @@ namespace Standart.Hash.xxHash
private static unsafe void XXH3_accumulate_512_sse2(ulong* acc, byte* input, byte* secret)
{
const int m128i_size = 16;
const byte _MM_SHUFFLE_0_3_0_1 = 49;
const byte _MM_SHUFFLE_1_0_3_2 = 78;
for (int i = 0; i < XXH_STRIPE_LEN / m128i_size; i++)
{
@ -399,9 +401,9 @@ namespace Standart.Hash.xxHash
var data_vec = Sse2.LoadVector128((uint*) input + uint32_offset);
var key_vec = Sse2.LoadVector128((uint*) secret + uint32_offset);
var data_key = Sse2.Xor(data_vec, key_vec);
var data_key_lo = Sse2.Shuffle(data_key, _MM_SHUFFLE(0, 3, 0, 1));
var data_key_lo = Sse2.Shuffle(data_key, _MM_SHUFFLE_0_3_0_1);
var product = Sse2.Multiply(data_key, data_key_lo);
var data_swap = Sse2.Shuffle(data_vec, _MM_SHUFFLE(1, 0, 3, 2)).AsUInt64();
var data_swap = Sse2.Shuffle(data_vec, _MM_SHUFFLE_1_0_3_2).AsUInt64();
var sum = Sse2.Add(acc_vec, data_swap);
var result = Sse2.Add(product, sum);
Sse2.Store(acc + uint64_offset, result);
@ -442,6 +444,7 @@ namespace Standart.Hash.xxHash
private static unsafe void XXH3_scrambleAcc_sse2(ulong* acc, byte* secret)
{
const int m128i_size = 16;
const byte _MM_SHUFFLE_0_3_0_1 = 49;
var prime32 = Vector128.Create(XXH_PRIME32_1);
@ -455,7 +458,7 @@ namespace Standart.Hash.xxHash
var data_vec = Sse2.Xor(acc_vec, shifted);
var key_vec = Sse2.LoadVector128((uint*) secret + uint32_offset);
var data_key = Sse2.Xor(data_vec, key_vec);
var data_key_hi = Sse2.Shuffle(data_key.AsUInt32(), _MM_SHUFFLE(0, 3, 0, 1));
var data_key_hi = Sse2.Shuffle(data_key.AsUInt32(), _MM_SHUFFLE_0_3_0_1);
var prod_lo = Sse2.Multiply(data_key, prime32);
var prod_hi = Sse2.Multiply(data_key_hi, prime32);
var result = Sse2.Add(prod_lo, Sse2.ShiftLeftLogical(prod_hi, 32));