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| 1 | + |
| 2 | +// RUN: %target-swift-frontend -swift-version 4 -module-name generic_casts -Xllvm -sil-full-demangle -emit-silgen -enable-sil-ownership %s | %FileCheck %s |
| 3 | + |
| 4 | +// The below tests are to ensure we maintain compatibility with Swift 4.1's |
| 5 | +// behaviour when casting to an archetype – the compiler assumes a non-optional |
| 6 | +// archetype is non-optional, and therefore can unwrap the source. |
| 7 | + |
| 8 | +// CHECK-LABEL: sil hidden @$S13generic_casts32optional_any_to_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 9 | +func optional_any_to_opaque_archetype<T>(_ x: Any?) -> T { |
| 10 | + return x as! T |
| 11 | + // CHECK: bb0([[RET:%.*]] : @trivial $*T, {{%.*}} : @trivial $*Optional<Any>): |
| 12 | + // CHECK: unconditional_checked_cast_addr Any in {{%.*}} : $*Any to T in [[RET]] : $*T |
| 13 | +} |
| 14 | + |
| 15 | +// CHECK-LABEL: sil hidden @$S13generic_casts46optional_any_conditionally_to_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 16 | +func optional_any_conditionally_to_opaque_archetype<T>(_ x: Any?) -> T? { |
| 17 | + return x as? T |
| 18 | + // CHECK: checked_cast_addr_br take_always Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 19 | +} |
| 20 | + |
| 21 | +// CHECK-LABEL: sil hidden @$S13generic_casts32optional_any_is_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 22 | +func optional_any_is_opaque_archetype<T>(_ x: Any?, _: T) -> Bool { |
| 23 | + return x is T |
| 24 | + // CHECK: checked_cast_addr_br take_always Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 25 | +} |
| 26 | + |
| 27 | +// CHECK-LABEL: sil hidden @$S13generic_casts016optional_any_to_C17_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 28 | +func optional_any_to_optional_opaque_archetype<T>(_ x: Any?) -> T? { |
| 29 | + return x as! T? |
| 30 | + // CHECK: unconditional_checked_cast_addr Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 31 | +} |
| 32 | + |
| 33 | +// CHECK-LABEL: sil hidden @$S13generic_casts030optional_any_conditionally_to_C17_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 34 | +func optional_any_conditionally_to_optional_opaque_archetype<T>(_ x: Any?) -> T?? { |
| 35 | + return x as? T? |
| 36 | + // CHECK: checked_cast_addr_br take_always Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 37 | +} |
| 38 | + |
| 39 | +// CHECK-LABEL: sil hidden @$S13generic_casts016optional_any_is_C17_opaque_archetype{{[_0-9a-zA-Z]*}}F |
| 40 | +func optional_any_is_optional_opaque_archetype<T>(_ x: Any?, _: T) -> Bool { |
| 41 | + return x is T? |
| 42 | + // Because the levels of optional are the same, 'is' doesn't transform into an 'as?', |
| 43 | + // so we just cast directly without digging into the optional operand. |
| 44 | + // CHECK: checked_cast_addr_br take_always Optional<Any> in {{%.*}} : $*Optional<Any> to Optional<T> in {{%.*}} : $*Optional<T> |
| 45 | +} |
| 46 | + |
| 47 | +// CHECK-LABEL: sil hidden @$S13generic_casts31optional_any_to_class_archetype{{[_0-9a-zA-Z]*}}F |
| 48 | +func optional_any_to_class_archetype<T : AnyObject>(_ x: Any?) -> T { |
| 49 | + return x as! T |
| 50 | + // CHECK: unconditional_checked_cast_addr Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 51 | +} |
| 52 | + |
| 53 | +// CHECK-LABEL: sil hidden @$S13generic_casts45optional_any_conditionally_to_class_archetype{{[_0-9a-zA-Z]*}}F |
| 54 | +func optional_any_conditionally_to_class_archetype<T : AnyObject>(_ x: Any?) -> T? { |
| 55 | + return x as? T |
| 56 | + // CHECK: checked_cast_addr_br take_always Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 57 | +} |
| 58 | + |
| 59 | +// CHECK-LABEL: sil hidden @$S13generic_casts31optional_any_is_class_archetype{{[_0-9a-zA-Z]*}}F |
| 60 | +func optional_any_is_class_archetype<T : AnyObject>(_ x: Any?, _: T) -> Bool { |
| 61 | + return x is T |
| 62 | + // CHECK: checked_cast_addr_br take_always Any in {{%.*}} : $*Any to T in {{%.*}} : $*T |
| 63 | +} |
| 64 | + |
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