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blake2bAVX2_amd64.go (947B)

      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 
      8 package blake2b
      9 
     10 import "golang.org/x/sys/cpu"
     11 
     12 func init() {
     13 	useAVX2 = cpu.X86.HasAVX2
     14 	useAVX = cpu.X86.HasAVX
     15 	useSSE4 = cpu.X86.HasSSE41
     16 }
     17 
     18 //go:noescape
     19 func hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
     20 
     21 //go:noescape
     22 func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
     23 
     24 //go:noescape
     25 func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
     26 
     27 func 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 }