1// Copyright 2016 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// +build go1.7,amd64,!gccgo,!appengine
6
7package blake2b
8
9import "golang.org/x/sys/cpu"
10
11func init() {
12	useAVX2 = cpu.X86.HasAVX2
13	useAVX = cpu.X86.HasAVX
14	useSSE4 = cpu.X86.HasSSE41
15}
16
17//go:noescape
18func hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
19
20//go:noescape
21func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
22
23//go:noescape
24func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
25
26func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) {
27	switch {
28	case useAVX2:
29		hashBlocksAVX2(h, c, flag, blocks)
30	case useAVX:
31		hashBlocksAVX(h, c, flag, blocks)
32	case useSSE4:
33		hashBlocksSSE4(h, c, flag, blocks)
34	default:
35		hashBlocksGeneric(h, c, flag, blocks)
36	}
37}
38