sha512block_amd64.mx raw

   1  // Copyright 2013 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 !purego
   6  
   7  package sha512
   8  
   9  import (
  10  	"crypto/internal/fips140deps/cpu"
  11  	"crypto/internal/impl"
  12  )
  13  
  14  var useAVX2 = cpu.X86HasAVX && cpu.X86HasAVX2 && cpu.X86HasBMI2
  15  
  16  func init() {
  17  	impl.Register("sha512", "AVX2", &useAVX2)
  18  }
  19  
  20  //go:noescape
  21  func blockAVX2(dig *Digest, p []byte)
  22  
  23  func block(dig *Digest, p []byte) {
  24  	if useAVX2 {
  25  		blockAVX2(dig, p)
  26  	} else {
  27  		blockGeneric(dig, p)
  28  	}
  29  }
  30