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00c1279dbb
Bitwise takability is now part of the layout of a type, because non-bitwise takable types are never stored inline in an existential or resilient global's buffer, even if they would fit. The basic rule is that weak references, unknown-refcounted unowned references, and aggregates that contain them, are not bitwise takable, whereas everything else is bitwise takable. Also, since the bitwise takable for an unowned reference depends on the reference counting style, we have to record the superclass of a protocol, if any, to correctly determine the reference counting style of the protocol existential.
355 lines
19 KiB
Swift
355 lines
19 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -lswiftSwiftReflectionTest %s -o %t/existentials
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// RUN: %target-codesign %t/existentials
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// RUN: %target-run %target-swift-reflection-test %t/existentials | %FileCheck %s --check-prefix=CHECK-%target-ptrsize
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// REQUIRES: objc_interop
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// REQUIRES: executable_test
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/*
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This file pokes at the swift_reflection_projectExistential API
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of the SwiftRemoteMirror library.
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It tests the three conditions of existential layout:
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- Class existentials
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- Existentials whose contained type fits in the 3-word buffer
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- Existentials whose contained type has to be allocated into a
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raw heap buffer.
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- Error existentials, a.k.a. `Error`.
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- See also: SwiftReflectionTest.reflect(any:)
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- See also: SwiftReflectionTest.reflect(error:)
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*/
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import SwiftReflectionTest
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class MyClass<T, U> {
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let x: T
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let y: (T, U)
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init(x: T, y: (T, U)) {
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self.x = x
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self.y = y
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}
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}
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struct MyStruct<T, U, V> {
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let x: T
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let y: U
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let z: V
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}
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protocol MyProtocol {}
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protocol MyErrorProtocol : Error {}
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struct MyError : MyProtocol, Error {
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let i = 0xFEDCBA
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}
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struct MyCustomError : MyProtocol, MyErrorProtocol {}
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struct HasError {
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let singleError: Error
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let errorInComposition: MyProtocol & Error
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let customError: MyErrorProtocol
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let customErrorInComposition: MyErrorProtocol & MyProtocol
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}
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// This will be projected as a class existential, so its
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// size doesn't matter.
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var mc = MyClass(x: 1010, y: (2020, 3030))
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reflect(any: mc)
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// CHECK-64: Reflecting an existential.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-64: Type reference:
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// CHECK-64: (bound_generic_class existentials.MyClass
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int))
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// CHECK-64: Type info:
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// CHECK-64: (reference kind=strong refcounting=native)
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// CHECK-32: Reflecting an existential.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (bound_generic_class existentials.MyClass
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int))
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// CHECK-32: Type info:
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// CHECK-32: (reference kind=strong refcounting=native)
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// This value fits in the 3-word buffer in the container.
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var smallStruct = MyStruct(x: 1, y: 2, z: 3)
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reflect(any: smallStruct)
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// CHECK-64: Reflecting an existential.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-64: Type reference:
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// CHECK-64: (bound_generic_struct existentials.MyStruct
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int))
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// CHECK-64: Type info:
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// CHECK-64: (struct size=24 alignment=8 stride=24 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=x offset=0
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field name=y offset=8
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field name=z offset=16
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1)))))
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// CHECK-32: Reflecting an existential.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (bound_generic_struct existentials.MyStruct
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int))
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// CHECK-32: Type info:
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// CHECK-32: (struct size=12 alignment=4 stride=12 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=x offset=0
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field name=y offset=4
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field name=z offset=8
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1)))))
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// This value will be copied into a heap buffer, with a
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// pointer to it in the existential.
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var largeStruct = MyStruct(x: (1,1,1), y: (2,2,2), z: (3,3,3))
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reflect(any: largeStruct)
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// CHECK-64: Reflecting an existential.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-64: Type reference:
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// CHECK-64: (bound_generic_struct existentials.MyStruct
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// CHECK-64-NEXT: (tuple
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int))
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// CHECK-64-NEXT: (tuple
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int))
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// CHECK-64-NEXT: (tuple
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int)
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// CHECK-64-NEXT: (struct Swift.Int)))
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// CHECK-64: Type info:
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// CHECK-64-NEXT: (struct size=72 alignment=8 stride=72 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=x offset=0
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// CHECK-64-NEXT: (tuple size=24 alignment=8 stride=24 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field offset=0
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=8
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=16
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))))
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// CHECK-64-NEXT: (field name=y offset=24
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// CHECK-64-NEXT: (tuple size=24 alignment=8 stride=24 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field offset=0
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=8
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=16
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))))
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// CHECK-64-NEXT: (field name=z offset=48
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// CHECK-64-NEXT: (tuple size=24 alignment=8 stride=24 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field offset=0
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=8
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-64-NEXT: (field offset=16
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// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-64-NEXT: (field name=_value offset=0
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1)))))))
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// CHECK-32: Reflecting an existential.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (bound_generic_struct existentials.MyStruct
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// CHECK-32-NEXT: (tuple
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int))
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// CHECK-32-NEXT: (tuple
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int))
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// CHECK-32-NEXT: (tuple
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int)
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// CHECK-32-NEXT: (struct Swift.Int)))
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// CHECK-32: Type info:
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// CHECK-32: (struct size=36 alignment=4 stride=36 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=x offset=0
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// CHECK-32-NEXT: (tuple size=12 alignment=4 stride=12 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field offset=0
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=4
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=8
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))))
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// CHECK-32-NEXT: (field name=y offset=12
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// CHECK-32-NEXT: (tuple size=12 alignment=4 stride=12 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field offset=0
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=4
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=8
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))))
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// CHECK-32-NEXT: (field name=z offset=24
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// CHECK-32-NEXT: (tuple size=12 alignment=4 stride=12 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field offset=0
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=4
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1))))
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// CHECK-32-NEXT: (field offset=8
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// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
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// CHECK-32-NEXT: (field name=_value offset=0
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1)))))))
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var he = HasError(singleError: MyError(), errorInComposition: MyError(), customError: MyCustomError(), customErrorInComposition: MyCustomError())
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reflect(any: he)
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// CHECK-64: Reflecting an existential.
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// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F+]}}
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// CHECK-64: Type reference:
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// CHECK-64: (struct existentials.HasError)
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// CHECK-64: Type info:
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// CHECK-64: (struct size=144 alignment=8 stride=144
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// CHECK-64-NEXT: (field name=singleError offset=0
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// CHECK-64-NEXT: (error_existential size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64-NEXT: (field name=error offset=0
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// CHECK-64-NEXT: (reference kind=strong refcounting=unknown))))
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// CHECK-64-NEXT: (field name=errorInComposition offset=8
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// CHECK-64-NEXT: (opaque_existential size=48 alignment=8 stride=48 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64-NEXT: (field name=metadata offset=24
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1))
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// CHECK-64-NEXT: (field name=wtable offset=32
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=1 bitwise_takable=1))
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// CHECK-64-NEXT: (field name=wtable offset=40
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=1 bitwise_takable=1))))
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// CHECK-64-NEXT: (field name=customError offset=56
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// CHECK-64-NEXT: (opaque_existential size=40 alignment=8 stride=40 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64-NEXT: (field name=metadata offset=24
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1))
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// CHECK-64-NEXT: (field name=wtable offset=32
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=1 bitwise_takable=1))))
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// CHECK-64-NEXT: (field name=customErrorInComposition offset=96
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// CHECK-64-NEXT: (opaque_existential size=48 alignment=8 stride=48 num_extra_inhabitants=2147483647 bitwise_takable=1
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// CHECK-64-NEXT: (field name=metadata offset=24
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=2147483647 bitwise_takable=1))
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// CHECK-64-NEXT: (field name=wtable offset=32
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=1 bitwise_takable=1))
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// CHECK-64-NEXT: (field name=wtable offset=40
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// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=1 bitwise_takable=1)))))
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// CHECK-32: Reflecting an existential.
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// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
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// CHECK-32: Type reference:
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// CHECK-32: (struct existentials.HasError)
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// CHECK-32: Type info:
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// CHECK-32: (struct size=72 alignment=4 stride=72 num_extra_inhabitants=4096 bitwise_takable=1
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// CHECK-32-NEXT: (field name=singleError offset=0
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// CHECK-32-NEXT: (error_existential size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1
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// CHECK-32-NEXT: (field name=error offset=0
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// CHECK-32-NEXT: (reference kind=strong refcounting=unknown))))
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// CHECK-32-NEXT: (field name=errorInComposition offset=4
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// CHECK-32-NEXT: (opaque_existential size=24 alignment=4 stride=24 num_extra_inhabitants=4096 bitwise_takable=1
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// CHECK-32-NEXT: (field name=metadata offset=12
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1))
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// CHECK-32-NEXT: (field name=wtable offset=16
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=1 bitwise_takable=1))
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// CHECK-32-NEXT: (field name=wtable offset=20
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// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=1 bitwise_takable=1))))
|
|
// CHECK-32-NEXT: (field name=customError offset=28
|
|
// CHECK-32-NEXT: (opaque_existential size=20 alignment=4 stride=20 num_extra_inhabitants=4096 bitwise_takable=1
|
|
// CHECK-32-NEXT: (field name=metadata offset=12
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1))
|
|
// CHECK-32-NEXT: (field name=wtable offset=16
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=1 bitwise_takable=1))))
|
|
// CHECK-32-NEXT: (field name=customErrorInComposition offset=48
|
|
// CHECK-32-NEXT: (opaque_existential size=24 alignment=4 stride=24 num_extra_inhabitants=4096 bitwise_takable=1
|
|
// CHECK-32-NEXT: (field name=metadata offset=12
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=4096 bitwise_takable=1))
|
|
// CHECK-32-NEXT: (field name=wtable offset=16
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=1 bitwise_takable=1))
|
|
// CHECK-32-NEXT: (field name=wtable offset=20
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=1 bitwise_takable=1)))))
|
|
|
|
reflect(error: MyError())
|
|
|
|
// CHECK-64: Reflecting an error existential.
|
|
// CHECK-64: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
|
|
// CHECK-64: Type reference:
|
|
// CHECK-64: (struct existentials.MyError)
|
|
|
|
// CHECK-64: Type info:
|
|
// CHECK-64: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
|
|
// CHECK-64-NEXT: (field name=i offset=0
|
|
// CHECK-64-NEXT: (struct size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1
|
|
// CHECK-64-NEXT: (field name=_value offset=0
|
|
// CHECK-64-NEXT: (builtin size=8 alignment=8 stride=8 num_extra_inhabitants=0 bitwise_takable=1)))))
|
|
|
|
// CHECK-32: Reflecting an error existential.
|
|
// CHECK-32: Instance pointer in child address space: 0x{{[0-9a-fA-F]+}}
|
|
// CHECK-32: Type reference:
|
|
// CHECK-32: (struct existentials.MyError)
|
|
|
|
// CHECK-32: Type info:
|
|
// CHECK-32: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
|
|
// CHECK-32-NEXT: (field name=i offset=0
|
|
// CHECK-32-NEXT: (struct size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1
|
|
// CHECK-32-NEXT: (field name=_value offset=0
|
|
// CHECK-32-NEXT: (builtin size=4 alignment=4 stride=4 num_extra_inhabitants=0 bitwise_takable=1)))))
|
|
|
|
doneReflecting()
|