From 109be507377fe7f6e8819ac94041d3fdcdf6fd2f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:18:25 +0200 Subject: Adding upstream version 1.19.8. Signed-off-by: Daniel Baumann --- src/internal/bytealg/index_arm64.go | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 src/internal/bytealg/index_arm64.go (limited to 'src/internal/bytealg/index_arm64.go') diff --git a/src/internal/bytealg/index_arm64.go b/src/internal/bytealg/index_arm64.go new file mode 100644 index 0000000..e87c109 --- /dev/null +++ b/src/internal/bytealg/index_arm64.go @@ -0,0 +1,23 @@ +// 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. + +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 +} -- cgit v1.2.3