| // 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. |
| |
| //go:build amd64 && gc && !purego |
| |
| 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 hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) |
| |
| //go:noescape |
| func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) |
| |
| //go:noescape |
| func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) |
| |
| func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) { |
| switch { |
| case useAVX2: |
| hashBlocksAVX2(h, c, flag, blocks) |
| case useAVX: |
| hashBlocksAVX(h, c, flag, blocks) |
| case useSSE4: |
| hashBlocksSSE4(h, c, flag, blocks) |
| default: |
| hashBlocksGeneric(h, c, flag, blocks) |
| } |
| } |