| //===--- StringWalk.swift -------------------------------------*- swift -*-===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| % # Ignore the following warning. This _is_ the correct file to edit. |
| //////////////////////////////////////////////////////////////////////////////// |
| // WARNING: This file is manually generated from .gyb template and should not |
| // be directly modified. Instead, make changes to StringWalk.swift.gyb and run |
| // scripts/generate_harness/generate_harness.py to regenerate this file. |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| |
| // Test String subscript performance. |
| // |
| // Subscript has a slow path that initializes a global variable: |
| // Swift._cocoaStringSubscript.addressor. Global optimization would |
| // normally hoist the initializer outside the inner loop (over |
| // unicodeScalars), forcing the initializer to be called on each |
| // lap. However, no that the cocoa code is properly marked "slowPath", |
| // no hoisting should occur. |
| import TestsUtils |
| |
| var count: Int = 0 |
| |
| // |
| // Helper functionality |
| // |
| |
| @inline(never) func count_unicodeScalars(_ s: String.UnicodeScalarView) { |
| for _ in s { |
| count += 1 |
| } |
| } |
| @inline(never) func count_characters(_ s: String.CharacterView) { |
| for _ in s { |
| count += 1 |
| } |
| } |
| @inline(never) func count_unicodeScalars_rev( |
| _ s: ReversedCollection<String.UnicodeScalarView> |
| ) { |
| for _ in s { |
| count += 1 |
| } |
| } |
| @inline(never) func count_characters_rev( |
| _ s: ReversedCollection<String.CharacterView> |
| ) { |
| for _ in s { |
| count += 1 |
| } |
| } |
| |
| // |
| // Workloads |
| // |
| let ascii = |
| "siebenhundertsiebenundsiebzigtausendsiebenhundertsiebenundsiebzig" |
| let emoji = "👍👩👩👧👧👨👨👦👦🇺🇸🇨🇦🇲🇽👍🏻👍🏼👍🏽👍🏾👍🏿" |
| let utf16 = emoji + "the quick brown fox" + String(emoji.reversed() as Array<Character>) |
| |
| let japanese = "今回のアップデートでSwiftに大幅な改良が施され、安定していてしかも直感的に使うことができるAppleプラットフォーム向けプログラミング言語になりました。" |
| let chinese = "Swift 是面向 Apple 平台的编程语言，功能强大且直观易用，而本次更新对其进行了全面优化。" |
| let korean = "이번 업데이트에서는 강력하면서도 직관적인 Apple 플랫폼용 프로그래밍 언어인 Swift를 완벽히 개선하였습니다." |
| let russian = "в чащах юга жил-был цитрус? да, но фальшивый экземпляр" |
| |
| // A workload that's mostly Latin characters, with occasional emoji |
| // interspersed. Common for tweets. |
| let tweet = "Worst thing about working on String is that it breaks *everything*. Asserts, debuggers, and *especially* printf-style debugging 😭" |
| |
| // |
| // Benchmarks |
| // |
| |
| // Pre-commit benchmark: simple scalar walk |
| @inline(never) |
| public func run_StringWalk(_ N: Int) { |
| return run_StringWalk_ascii_unicodeScalars(N) |
| } |
| |
| // Extended String benchmarks: |
| let baseMultiplier = 10_000 |
| let unicodeScalarsMultiplier = baseMultiplier |
| let charactersMultiplier = baseMultiplier / 5 |
| |
| % for Name in ["ascii", "utf16", "tweet", "japanese", "chinese", "korean", "russian"]: |
| % for Kind in ["unicodeScalars", "characters"]: |
| |
| @inline(never) |
| public func run_StringWalk_${Name}_${Kind}(_ N: Int) { |
| for _ in 1...${Kind}Multiplier*N { |
| count_${Kind}(${Name}.${Kind}) |
| } |
| } |
| |
| @inline(never) |
| public func run_StringWalk_${Name}_${Kind}_Backwards(_ N: Int) { |
| for _ in 1...${Kind}Multiplier*N { |
| count_${Kind}_rev(${Name}.${Kind}.reversed()) |
| } |
| } |
| |
| % end |
| % end |
