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//go:build go1.7 && amd64 && gc && !purego 6// +build go1.7,amd64,gc,!purego 7 8package blake2b 9 10import "golang.org/x/sys/cpu" 11 12func init() { 13 useAVX2 = cpu.X86.HasAVX2 14 useAVX = cpu.X86.HasAVX 15 useSSE4 = cpu.X86.HasSSE41 16} 17 18//go:noescape 19func hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) 20 21//go:noescape 22func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) 23 24//go:noescape 25func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) 26 27func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) { 28 switch { 29 case useAVX2: 30 hashBlocksAVX2(h, c, flag, blocks) 31 case useAVX: 32 hashBlocksAVX(h, c, flag, blocks) 33 case useSSE4: 34 hashBlocksSSE4(h, c, flag, blocks) 35 default: 36 hashBlocksGeneric(h, c, flag, blocks) 37 } 38} 39