blake2s_amd64.go raw

   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  
   7  package blake2s
   8  
   9  import "golang.org/x/sys/cpu"
  10  
  11  var (
  12  	useSSE4  = cpu.X86.HasSSE41
  13  	useSSSE3 = cpu.X86.HasSSSE3
  14  	useSSE2  = cpu.X86.HasSSE2
  15  )
  16  
  17  //go:noescape
  18  func hashBlocksSSE2(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
  19  
  20  //go:noescape
  21  func hashBlocksSSSE3(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
  22  
  23  //go:noescape
  24  func hashBlocksSSE4(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte)
  25  
  26  func 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