| // RUN: %target-swift-frontend -O -emit-sil %s | %FileCheck %s | |
| // REQUIRES: objc_interop | |
| import Foundation | |
| protocol FooProtocol : class { | |
| } | |
| class FooProtocolImplementation : NSObject, FooProtocol { | |
| } | |
| // CHECK-LABEL: sil @{{.*}}testit | |
| // CHECK: checked_cast_addr_br {{.*}} AnyHashable {{.*}} to FooProtocol | |
| public func testit(_ x: AnyHashable) -> Bool { | |
| return (x as? FooProtocol) != nil | |
| } | |