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 amd64 && gc && !purego 6// +build amd64,gc,!purego 7 8package blake2s 9 10import "golang.org/x/sys/cpu" 11 12var ( 13 useSSE4 = cpu.X86.HasSSE41 14 useSSSE3 = cpu.X86.HasSSSE3 15 useSSE2 = cpu.X86.HasSSE2 16) 17 18//go:noescape 19func hashBlocksSSE2(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) 20 21//go:noescape 22func hashBlocksSSSE3(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) 23 24//go:noescape 25func hashBlocksSSE4(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) 26 27func hashBlocks(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) { 28 switch { 29 case useSSE4: 30 hashBlocksSSE4(h, c, flag, blocks) 31 case useSSSE3: 32 hashBlocksSSSE3(h, c, flag, blocks) 33 case useSSE2: 34 hashBlocksSSE2(h, c, flag, blocks) 35 default: 36 hashBlocksGeneric(h, c, flag, blocks) 37 } 38} 39