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 amd64,!gccgo,!appengine
6
7package blake2s
8
9import "golang.org/x/sys/cpu"
10
11var (
12	useSSE4  = cpu.X86.HasSSE41
13	useSSSE3 = cpu.X86.HasSSSE3
14	useSSE2  = cpu.X86.HasSSE2
15)
16
17//go:noescape
18func hashBlocksSSE2(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
19
20//go:noescape
21func hashBlocksSSSE3(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
22
23//go:noescape
24func hashBlocksSSE4(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
25
26func hashBlocks(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) {
27	switch {
28	case useSSE4:
29		hashBlocksSSE4(h, c, flag, blocks)
30	case useSSSE3:
31		hashBlocksSSSE3(h, c, flag, blocks)
32	case useSSE2:
33		hashBlocksSSE2(h, c, flag, blocks)
34	default:
35		hashBlocksGeneric(h, c, flag, blocks)
36	}
37}
38