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accum_generic.go
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accum_generic.go
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package xxh3
// avx512Switch is the size at which the avx512 code is used.
// Bigger blocks benefit more.
const avx512Switch = 1 << 10
func accumScalar(accs *[8]u64, p, secret ptr, l u64) {
if secret != key {
accumScalarSeed(accs, p, secret, l)
return
}
for l > _block {
k := secret
// accs
for i := 0; i < 16; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
l -= _stripe
if l > 0 {
p, k = ptr(ui(p)+_stripe), ptr(ui(k)+8)
}
}
// scramble accs
accs[0] ^= accs[0] >> 47
accs[0] ^= key64_128
accs[0] *= prime32_1
accs[1] ^= accs[1] >> 47
accs[1] ^= key64_136
accs[1] *= prime32_1
accs[2] ^= accs[2] >> 47
accs[2] ^= key64_144
accs[2] *= prime32_1
accs[3] ^= accs[3] >> 47
accs[3] ^= key64_152
accs[3] *= prime32_1
accs[4] ^= accs[4] >> 47
accs[4] ^= key64_160
accs[4] *= prime32_1
accs[5] ^= accs[5] >> 47
accs[5] ^= key64_168
accs[5] *= prime32_1
accs[6] ^= accs[6] >> 47
accs[6] ^= key64_176
accs[6] *= prime32_1
accs[7] ^= accs[7] >> 47
accs[7] ^= key64_184
accs[7] *= prime32_1
}
if l > 0 {
t, k := (l-1)/_stripe, secret
for i := u64(0); i < t; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
l -= _stripe
if l > 0 {
p, k = ptr(ui(p)+_stripe), ptr(ui(k)+8)
}
}
if l > 0 {
p = ptr(ui(p) - uintptr(_stripe-l))
dv0 := readU64(p, 8*0)
dk0 := dv0 ^ key64_121
accs[1] += dv0
accs[0] += uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*1)
dk1 := dv1 ^ key64_129
accs[0] += dv1
accs[1] += uint64(uint32(dk1)) * (dk1 >> 32)
dv2 := readU64(p, 8*2)
dk2 := dv2 ^ key64_137
accs[3] += dv2
accs[2] += uint64(uint32(dk2)) * (dk2 >> 32)
dv3 := readU64(p, 8*3)
dk3 := dv3 ^ key64_145
accs[2] += dv3
accs[3] += uint64(uint32(dk3)) * (dk3 >> 32)
dv4 := readU64(p, 8*4)
dk4 := dv4 ^ key64_153
accs[5] += dv4
accs[4] += uint64(uint32(dk4)) * (dk4 >> 32)
dv5 := readU64(p, 8*5)
dk5 := dv5 ^ key64_161
accs[4] += dv5
accs[5] += uint64(uint32(dk5)) * (dk5 >> 32)
dv6 := readU64(p, 8*6)
dk6 := dv6 ^ key64_169
accs[7] += dv6
accs[6] += uint64(uint32(dk6)) * (dk6 >> 32)
dv7 := readU64(p, 8*7)
dk7 := dv7 ^ key64_177
accs[6] += dv7
accs[7] += uint64(uint32(dk7)) * (dk7 >> 32)
}
}
}
func accumBlockScalar(accs *[8]u64, p, secret ptr) {
if secret != key {
accumBlockScalarSeed(accs, p, secret)
return
}
// accs
for i := 0; i < 16; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
p, secret = ptr(ui(p)+_stripe), ptr(ui(secret)+8)
}
// scramble accs
accs[0] ^= accs[0] >> 47
accs[0] ^= key64_128
accs[0] *= prime32_1
accs[1] ^= accs[1] >> 47
accs[1] ^= key64_136
accs[1] *= prime32_1
accs[2] ^= accs[2] >> 47
accs[2] ^= key64_144
accs[2] *= prime32_1
accs[3] ^= accs[3] >> 47
accs[3] ^= key64_152
accs[3] *= prime32_1
accs[4] ^= accs[4] >> 47
accs[4] ^= key64_160
accs[4] *= prime32_1
accs[5] ^= accs[5] >> 47
accs[5] ^= key64_168
accs[5] *= prime32_1
accs[6] ^= accs[6] >> 47
accs[6] ^= key64_176
accs[6] *= prime32_1
accs[7] ^= accs[7] >> 47
accs[7] ^= key64_184
accs[7] *= prime32_1
}
// accumScalarSeed should be used with custom key.
func accumScalarSeed(accs *[8]u64, p, secret ptr, l u64) {
for l > _block {
k := secret
// accs
for i := 0; i < 16; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
l -= _stripe
if l > 0 {
p, k = ptr(ui(p)+_stripe), ptr(ui(k)+8)
}
}
// scramble accs
accs[0] ^= accs[0] >> 47
accs[0] ^= readU64(secret, 128)
accs[0] *= prime32_1
accs[1] ^= accs[1] >> 47
accs[1] ^= readU64(secret, 136)
accs[1] *= prime32_1
accs[2] ^= accs[2] >> 47
accs[2] ^= readU64(secret, 144)
accs[2] *= prime32_1
accs[3] ^= accs[3] >> 47
accs[3] ^= readU64(secret, 152)
accs[3] *= prime32_1
accs[4] ^= accs[4] >> 47
accs[4] ^= readU64(secret, 160)
accs[4] *= prime32_1
accs[5] ^= accs[5] >> 47
accs[5] ^= readU64(secret, 168)
accs[5] *= prime32_1
accs[6] ^= accs[6] >> 47
accs[6] ^= readU64(secret, 176)
accs[6] *= prime32_1
accs[7] ^= accs[7] >> 47
accs[7] ^= readU64(secret, 184)
accs[7] *= prime32_1
}
if l > 0 {
t, k := (l-1)/_stripe, secret
for i := u64(0); i < t; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(k, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(k, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
l -= _stripe
if l > 0 {
p, k = ptr(ui(p)+_stripe), ptr(ui(k)+8)
}
}
if l > 0 {
p = ptr(ui(p) - uintptr(_stripe-l))
dv0 := readU64(p, 8*0)
dk0 := dv0 ^ readU64(secret, 121)
accs[1] += dv0
accs[0] += uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*1)
dk1 := dv1 ^ readU64(secret, 129)
accs[0] += dv1
accs[1] += uint64(uint32(dk1)) * (dk1 >> 32)
dv2 := readU64(p, 8*2)
dk2 := dv2 ^ readU64(secret, 137)
accs[3] += dv2
accs[2] += uint64(uint32(dk2)) * (dk2 >> 32)
dv3 := readU64(p, 8*3)
dk3 := dv3 ^ readU64(secret, 145)
accs[2] += dv3
accs[3] += uint64(uint32(dk3)) * (dk3 >> 32)
dv4 := readU64(p, 8*4)
dk4 := dv4 ^ readU64(secret, 153)
accs[5] += dv4
accs[4] += uint64(uint32(dk4)) * (dk4 >> 32)
dv5 := readU64(p, 8*5)
dk5 := dv5 ^ readU64(secret, 161)
accs[4] += dv5
accs[5] += uint64(uint32(dk5)) * (dk5 >> 32)
dv6 := readU64(p, 8*6)
dk6 := dv6 ^ readU64(secret, 169)
accs[7] += dv6
accs[6] += uint64(uint32(dk6)) * (dk6 >> 32)
dv7 := readU64(p, 8*7)
dk7 := dv7 ^ readU64(secret, 177)
accs[6] += dv7
accs[7] += uint64(uint32(dk7)) * (dk7 >> 32)
}
}
}
// accumBlockScalarSeed should be used with custom key.
func accumBlockScalarSeed(accs *[8]u64, p, secret ptr) {
// accs
{
secret := secret
for i := 0; i < 16; i++ {
{
const off = 0
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 2
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 4
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
{
const off = 6
dv0 := readU64(p, 8*off)
dk0 := dv0 ^ readU64(secret, 8*off)
ac1 := dv0
ac0 := uint64(uint32(dk0)) * (dk0 >> 32)
dv1 := readU64(p, 8*off+8)
dk1 := dv1 ^ readU64(secret, 8*off+8)
ac0 += dv1
ac1 += uint64(uint32(dk1)) * (dk1 >> 32)
accs[off] += ac0
accs[off+1] += ac1
}
p, secret = ptr(ui(p)+_stripe), ptr(ui(secret)+8)
}
}
// scramble accs
accs[0] ^= accs[0] >> 47
accs[0] ^= readU64(secret, 128)
accs[0] *= prime32_1
accs[1] ^= accs[1] >> 47
accs[1] ^= readU64(secret, 136)
accs[1] *= prime32_1
accs[2] ^= accs[2] >> 47
accs[2] ^= readU64(secret, 144)
accs[2] *= prime32_1
accs[3] ^= accs[3] >> 47
accs[3] ^= readU64(secret, 152)
accs[3] *= prime32_1
accs[4] ^= accs[4] >> 47
accs[4] ^= readU64(secret, 160)
accs[4] *= prime32_1
accs[5] ^= accs[5] >> 47
accs[5] ^= readU64(secret, 168)
accs[5] *= prime32_1
accs[6] ^= accs[6] >> 47
accs[6] ^= readU64(secret, 176)
accs[6] *= prime32_1
accs[7] ^= accs[7] >> 47
accs[7] ^= readU64(secret, 184)
accs[7] *= prime32_1
}