FlattenSequence/distance(from:to:) benchmarks.

benchmark/CMakeLists.txt

@@ -95,6 +95,7 @@ set(SWIFT_BENCH_MODULES
     single-source/ExistentialPerformance
     single-source/Fibonacci
     single-source/FindStringNaive
+    single-source/FlattenDistanceFromTo
     single-source/FlattenList
     single-source/FloatingPointConversion
     single-source/FloatingPointParsing

benchmark/single-source/FlattenDistanceFromTo.swift

@@ -0,0 +1,117 @@
+//===--- FlattenDistanceFromTo.swift --------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2024 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
+//
+//===----------------------------------------------------------------------===//
+
+import TestsUtils
+
+public let benchmarks = [
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.Array.04.04",
+    runFunction: { with(arrayArray04x04, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayArray04x04) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.Array.04x08",
+    runFunction: { with(arrayArray04x08, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayArray04x08) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.Array.08.04",
+    runFunction: { with(arrayArray08x04, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayArray08x04) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.Array.08.08",
+    runFunction: { with(arrayArray08x08, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayArray08x08) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.String.04.04",
+    runFunction: { with(arrayString04x04, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayString04x04) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.String.04.08",
+    runFunction: { with(arrayString04x08, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayString04x08) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.String.08.04",
+    runFunction: { with(arrayString08x04, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayString08x04) }),
+
+  BenchmarkInfo(
+    name: "FlattenDistanceFromTo.Array.String.08.08",
+    runFunction: { with(arrayString08x08, $0) },
+    tags: [.validation, .api],
+    setUpFunction: { blackHole(arrayString08x08) }),
+]
+
+// MARK: - Array Array
+
+func makeArrayArray(_ outer: Int, _ inner: Int) -> FlattenSequence<[[UInt8]]> {
+  Array(repeating: Array(repeating: 123, count: inner), count: outer).joined()
+}
+
+let arrayArray04x04 = makeArrayArray(04, 04)
+let arrayArray04x08 = makeArrayArray(04, 08)
+let arrayArray08x04 = makeArrayArray(08, 04)
+let arrayArray08x08 = makeArrayArray(08, 08)
+
+@inline(never)
+public func with(_ collection: FlattenSequence<[[UInt8]]>, _ iterations: Int) {
+  var value = 0 as Int
+
+  for _ in 0 ..< iterations {
+    for a in collection.indices {
+      for b in collection.indices {
+        value &+= collection.distance(from: a, to: b)
+        value &+= collection.distance(from: b, to: a)
+      }
+    }
+  }
+
+  blackHole(value == 0)
+}
+
+// MARK: - Array String
+
+func makeArrayString(_ outer: Int, _ inner: Int) -> FlattenSequence<[String]> {
+  Array(repeating: String(repeating: "0", count: inner), count: outer).joined()
+}
+
+let arrayString04x04 = makeArrayString(04, 04)
+let arrayString04x08 = makeArrayString(04, 08)
+let arrayString08x04 = makeArrayString(08, 04)
+let arrayString08x08 = makeArrayString(08, 08)
+
+@inline(never)
+public func with(_ collection: FlattenSequence<[String]>, _ iterations: Int) {
+  var value = 0 as Int
+
+  for _ in 0 ..< iterations {
+    for a in collection.indices {
+      for b in collection.indices {
+        value &+= collection.distance(from: a, to: b)
+        value &+= collection.distance(from: b, to: a)
+      }
+    }
+  }
+
+  blackHole(value == 0)
+}

benchmark/utils/main.swift

@@ -89,6 +89,7 @@ import Exclusivity
 import ExistentialPerformance
 import Fibonacci
 import FindStringNaive
+import FlattenDistanceFromTo
 import FlattenList
 import FloatingPointConversion
 import FloatingPointParsing
@@ -282,6 +283,7 @@ register(Exclusivity.benchmarks)
 register(ExistentialPerformance.benchmarks)
 register(Fibonacci.benchmarks)
 register(FindStringNaive.benchmarks)
+register(FlattenDistanceFromTo.benchmarks)
 register(FlattenList.benchmarks)
 register(FloatingPointConversion.benchmarks)
 register(FloatingPointParsing.benchmarks)