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path: root/crypto/blake2b/blake2bAVX2_amd64.go
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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build go1.7,amd64,!gccgo,!appengine

package blake2b

import "golang.org/x/sys/cpu"

func init() {
    useAVX2 = cpu.X86.HasAVX2
    useAVX = cpu.X86.HasAVX
    useSSE4 = cpu.X86.HasSSE41
}

//go:noescape
func fAVX2(h *[8]uint64, m *[16]uint64, c0, c1 uint64, flag uint64, rounds uint64)

//go:noescape
func fAVX(h *[8]uint64, m *[16]uint64, c0, c1 uint64, flag uint64, rounds uint64)

//go:noescape
func fSSE4(h *[8]uint64, m *[16]uint64, c0, c1 uint64, flag uint64, rounds uint64)

func f(h *[8]uint64, m *[16]uint64, c0, c1 uint64, flag uint64, rounds uint64) {
    switch {
    case useAVX2:
        fAVX2(h, m, c0, c1, flag, rounds)
    case useAVX:
        fAVX(h, m, c0, c1, flag, rounds)
    case useSSE4:
        fSSE4(h, m, c0, c1, flag, rounds)
    default:
        fGeneric(h, m, c0, c1, flag, rounds)
    }
}