Performance Tests - Inline Code

PerformanceTestsInline.swift

class PerformanceTuningTests: XCTestCase {

    func testStackFunction() {
        let methodAccess = MethodAccess()
        self.measure {
            for _ in 0...100000000 {
                _ = methodAccess.stackFunction(x: 100)
            }
        }
    }
    
    func testInlineFunction() { // this test runs faster
        let methodAccess = MethodAccess()
        self.measure {
            for _ in 0...100000000 {
                _ = methodAccess.inlineFunction(x: 100)
            }
        }
    }
}

class MethodAccess: NSObject {

    func stackFunction(x : Int)->Int {
        return checkX(y: x)
    }
    
    func inlineFunction(x : Int)->Int {
        // do something
    }
    
    func checkX(y : Int)->Int {
        // do something
    }
}

@AviTsadok It looks like the @inline(__always) annotation is missing. 🙄