github.com/guyezi/gofrontend@v0.0.0-20200228202240-7a62a49e62c0/libgo/go/crypto/sha512/sha512block_amd64.go (about) 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 // +build ignore 6 // +build amd64 7 8 package sha512 9 10 import "internal/cpu" 11 12 //go:noescape 13 func blockAVX2(dig *digest, p []byte) 14 15 //go:noescape 16 func blockAMD64(dig *digest, p []byte) 17 18 var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI1 && cpu.X86.HasBMI2 19 20 func block(dig *digest, p []byte) { 21 if useAVX2 { 22 blockAVX2(dig, p) 23 } else { 24 blockAMD64(dig, p) 25 } 26 }