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3fe70968cc
This is a value operation that can work just fine on lowered types, so there's no need to carry along a formal type. Make the value/address duality clearer, and enforce it in the verifier.
39 lines
1.9 KiB
Swift
39 lines
1.9 KiB
Swift
// RUN: %target-swift-frontend -O -Xllvm -sil-print-types -emit-sil -disable-availability-checking %s -enable-builtin-module -enable-experimental-feature RawLayout | %FileCheck %s
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// REQUIRES: swift_feature_RawLayout
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import Builtin
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@frozen
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@_rawLayout(like: T)
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public struct Cell<T: ~Copyable>: ~Copyable {
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// CHECK-LABEL: sil {{.*}} @$s4CellAAVAARi_zrlE7addressSpyxGvg : $@convention(method) <T where T : ~Copyable> (@in_guaranteed Cell<T>) -> UnsafeMutablePointer<T> {
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// CHECK: bb0([[SELF:%.*]] : $*Cell<T>):
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// CHECK: [[RAW_LAYOUT_ADDR:%.*]] = builtin "addressOfRawLayout"<Cell<T>>([[SELF]] : $*Cell<T>) : $Builtin.RawPointer
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// CHECK-NEXT: [[POINTER:%.*]] = struct $UnsafeMutablePointer<T> ([[RAW_LAYOUT_ADDR]] : $Builtin.RawPointer)
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// CHECK-NEXT: return [[POINTER]] : $UnsafeMutablePointer<T>
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// CHECK-LABEL: } // end sil function '$s4CellAAVAARi_zrlE7addressSpyxGvg'
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@_transparent
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public var address: UnsafeMutablePointer<T> {
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.init(Builtin.addressOfRawLayout(self))
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}
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// CHECK-LABEL: sil {{.*}} @$s4CellAAVAARi_zrlEyAByxGxcfC : $@convention(method) <T where T : ~Copyable> (@in T, @thin Cell<T>.Type) -> @out Cell<T> {
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// CHECK: bb0({{%.*}} : $*Cell<T>, [[VALUE:%.*]] : $*T, {{%.*}} : $@thin Cell<T>.Type):
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// CHECK: {{%.*}} = builtin "zeroInitializer"([[SELF:%.*]] : $*Cell<T>) : $()
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// CHECK-NEXT: [[RAW_LAYOUT_ADDR:%.*]] = builtin "addressOfRawLayout"<Cell<T>>([[SELF]] : $*Cell<T>) : $Builtin.RawPointer
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// CHECK-NEXT: [[POINTER:%.*]] = struct $UnsafeMutablePointer<T> ([[RAW_LAYOUT_ADDR]] : $Builtin.RawPointer)
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// Calling 'UnsafeMutablePointer<T>.initialize(to:)'
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// CHECK: {{%.*}} = apply {{%.*}}<T>([[VALUE]], [[POINTER]])
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// CHECK-LABEL: } // end sil function '$s4CellAAVAARi_zrlEyAByxGxcfC'
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@_transparent
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public init(_ value: consuming T) {
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address.initialize(to: value)
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}
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@inlinable
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deinit {
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address.deinitialize(count: 1)
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}
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}
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