[thirdparty/gcc.git] / libgo / go / internal / bytealg / index_arm64.go

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build ignore_for_gccgo

package bytealg

// Empirical data shows that using Index can get better
// performance when len(s) <= 16.
const MaxBruteForce = 16

func init() {
	// Optimize cases where the length of the substring is less than 32 bytes
	MaxLen = 32
}

// Cutover reports the number of failures of IndexByte we should tolerate
// before switching over to Index.
// n is the number of bytes processed so far.
// See the bytes.Index implementation for details.
func Cutover(n int) int {
	// 1 error per 16 characters, plus a few slop to start.
	return 4 + n>>4
}
Commit	Line	Data
dd931d9b ILT	1	// Copyright 2018 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_for_gccgo
	6
	7	package bytealg
	8
aa8901e9	9	// Empirical data shows that using Index can get better
dd931d9b ILT	10	// performance when len(s) <= 16.
	11	const MaxBruteForce = 16
	12
	13	func init() {
	14	// Optimize cases where the length of the substring is less than 32 bytes
	15	MaxLen = 32
	16	}
	17
	18	// Cutover reports the number of failures of IndexByte we should tolerate
aa8901e9	19	// before switching over to Index.
dd931d9b ILT	20	// n is the number of bytes processed so far.
	21	// See the bytes.Index implementation for details.
	22	func Cutover(n int) int {
	23	// 1 error per 16 characters, plus a few slop to start.
	24	return 4 + n>>4
	25	}