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24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
// RUN: rm -rf %t && mkdir %t
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// RUN: %build-irgen-test-overlays
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// RUN: %target-swift-frontend(mock-sdk: -sdk %S/Inputs -I %t) -primary-file %s -emit-ir | FileCheck --check-prefix=CHECK --check-prefix=CHECK-%target-ptrsize %s
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// REQUIRES: objc_interop
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import Foundation
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// CHECK-LABEL: define hidden %CSo8NSObject* @checkedClassBoundCast(%swift.type*, %CSo8NSObject*, %swift.type* %T) #0 {
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// CHECK: [[OPAQUE_OBJ:%.+]] = bitcast %CSo8NSObject* %1 to i8*
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// CHECK: [[OPAQUE_CLASS:%.+]] = bitcast %swift.type* %T to i8*
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// CHECK: [[OPAQUE_RESULT:%.+]] = call i8* @swift_dynamicCastUnknownClassUnconditional(i8* [[OPAQUE_OBJ]], i8* [[OPAQUE_CLASS]])
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// CHECK: [[RESULT:%.+]] = bitcast i8* [[OPAQUE_RESULT]] to %CSo8NSObject*
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// CHECK: ret %CSo8NSObject* [[RESULT]]
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// CHECK: {{^}$}}
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sil hidden @checkedClassBoundCast : $@convention(thin) <T where T : NSObject> (@thick T.Type, @owned NSObject) -> @owned T {
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bb0(%unused : $@thick T.Type, %obj : $NSObject):
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strong_retain %obj : $NSObject
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%result = unconditional_checked_cast %obj : $NSObject to $T
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strong_release %obj : $NSObject
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return %result : $T
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}
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