| // RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s |
| |
| class Foo { |
| var bar: Bar! |
| } |
| |
| class Bar { |
| var bas: C! |
| } |
| |
| class C {} |
| class D: C {} |
| |
| // CHECK-LABEL: sil hidden @_T027force_cast_chained_optional4testAA1DCAA3FooCF |
| // CHECK: bb0([[ARG:%.*]] : $Foo): |
| // CHECK: [[BORROWED_ARG:%.*]] = begin_borrow [[ARG]] |
| // CHECK: class_method [[BORROWED_ARG]] : $Foo, #Foo.bar!getter.1 : (Foo) -> () -> Bar!, $@convention(method) (@guaranteed Foo) -> |
| // CHECK: select_enum_addr |
| // CHECK: cond_br {{%.*}}, [[SOME_BAR:bb[0-9]+]], [[NO_BAR:bb[0-9]+]] |
| // |
| // CHECK: [[NO_BAR]]: |
| // CHECK: br [[TRAP:bb[0-9]+]] |
| // |
| // CHECK: [[SOME_BAR]]: |
| // CHECK: [[PAYLOAD_ADDR:%.*]] = unchecked_take_enum_data_addr {{%.*}} : $*Optional<Bar> |
| // CHECK: [[BAR:%.*]] = load [copy] [[PAYLOAD_ADDR]] |
| // CHECK: [[METHOD:%.*]] = class_method [[BAR]] : $Bar, #Bar.bas!getter.1 : (Bar) -> () -> C!, $@convention(method) (@guaranteed Bar) -> |
| // CHECK: apply [[METHOD]]([[BAR]]) |
| // CHECK: destroy_value [[BAR]] |
| // CHECK: unconditional_checked_cast {{%.*}} : $C to $D |
| // CHECK: end_borrow [[BORROWED_ARG]] from [[ARG]] |
| // |
| // CHECK: [[TRAP]]: |
| // CHECK: unreachable |
| func test(_ x: Foo) -> D { |
| return x.bar?.bas as! D |
| } |
