1// Copyright 2017 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 7package sha256 8 9import "internal/cpu" 10 11var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI2 12var useSHA = useAVX2 && cpu.X86.HasSHA 13