Files
swift-mirror/benchmark/single-source/ArraySubscript.swift
Dave Abrahams e32fb8badb Remove interpolated strings from benchmark CheckResults
This call was in many cases skewing the benchmark results.

Note: Intentionally staging this in without removing the old overload initially.
2017-05-05 10:25:02 -07:00

39 lines
1.2 KiB
Swift

//===--- ArraySubscript.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
//
//===----------------------------------------------------------------------===//
// This test checks the performance of modifying an array element.
import TestsUtils
@inline(never)
public func run_ArraySubscript(_ N: Int) {
SRand()
let numArrays = 200*N
let numArrayElements = 100
func bound(_ x: Int) -> Int { return min(x, numArrayElements-1) }
var arrays = [[Int]](repeating: [], count: numArrays)
for i in 0..<numArrays {
for _ in 0..<numArrayElements {
arrays[i].append(Int(truncatingBitPattern: Random()))
}
}
// Do a max up the diagonal.
for i in 1..<numArrays {
arrays[i][bound(i)] =
max(arrays[i-1][bound(i-1)], arrays[i][bound(i)])
}
CheckResults(arrays[0][0] <= arrays[numArrays-1][bound(numArrays-1)])
}