forked from TrueCloudLab/tzhash
39 lines
841 B
Go
39 lines
841 B
Go
//go:build amd64 && !generic
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// +build amd64,!generic
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package tz
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import (
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"github.com/nspcc-dev/tzhash/gf127"
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"golang.org/x/sys/cpu"
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)
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func write(d *digest, data []byte) (n int, err error) {
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switch {
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case cpu.X86.HasAVX && cpu.X86.HasAVX2:
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return writeAVX2(d, data)
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case cpu.X86.HasAVX:
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return writeAVX(d, data)
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default:
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return writeGeneric(d, data)
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}
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}
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func writeAVX2(d *digest, data []byte) (n int, err error) {
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n = len(data)
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if len(data) != 0 {
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mulByteSliceRightx2(&d.x[0], &d.x[2], n, &data[0])
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}
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return
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}
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func writeAVX(d *digest, data []byte) (n int, err error) {
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n = len(data)
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for _, b := range data {
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mulByteRight(&d.x[0], &d.x[1], &d.x[2], &d.x[3], b)
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}
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return
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}
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func mulByteRight(c00, c01, c10, c11 *GF127, b byte)
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func mulByteSliceRightx2(c00c10 *gf127.GF127, c01c11 *gf127.GF127, n int, data *byte)
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