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74 lines
3.1 KiB
Swift
74 lines
3.1 KiB
Swift
// RUN: %target-swift-frontend -enable-sil-ownership -parse-stdlib -module-name Swift -emit-silgen %s | %FileCheck %s
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class C {}
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enum Optional<T> {
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case none
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case some(T)
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}
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precedencegroup AssignmentPrecedence {
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assignment: true
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associativity: right
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}
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struct Holder {
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unowned(unsafe) var value: C
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}
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_ = Holder(value: C())
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// CHECK-LABEL:sil hidden @_T0s6HolderV{{[_0-9a-zA-Z]*}}fC : $@convention(method) (@owned C, @thin Holder.Type) -> Holder
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// CHECK: bb0([[T0:%.*]] : @owned $C,
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// CHECK-NEXT: [[T1:%.*]] = ref_to_unmanaged [[T0]] : $C to $@sil_unmanaged C
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// CHECK-NEXT: destroy_value [[T0]] : $C
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// CHECK-NEXT: [[T2:%.*]] = struct $Holder ([[T1]] : $@sil_unmanaged C)
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// CHECK-NEXT: return [[T2]] : $Holder
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// CHECK-NEXT: } // end sil function '_T0s6HolderV5valueABs1CC_tcfC'
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func set(holder holder: inout Holder) {
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holder.value = C()
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}
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// CHECK-LABEL: sil hidden @_T0s3set6holderys6HolderVz_tF : $@convention(thin) (@inout Holder) -> () {
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// CHECK: bb0([[ADDR:%.*]] : @trivial $*Holder):
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// CHECK: [[T0:%.*]] = function_ref @_T0s1CC{{[_0-9a-zA-Z]*}}fC
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// CHECK: [[C:%.*]] = apply [[T0]](
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// CHECK-NEXT: [[WRITE:%.*]] = begin_access [modify] [unknown] [[ADDR]] : $*Holder
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// CHECK-NEXT: [[T0:%.*]] = struct_element_addr [[WRITE]] : $*Holder, #Holder.value
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// CHECK-NEXT: [[T1:%.*]] = ref_to_unmanaged [[C]]
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// CHECK-NEXT: assign [[T1]] to [[T0]]
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// CHECK-NEXT: destroy_value [[C]]
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// CHECK-NEXT: end_access [[WRITE]] : $*Holder
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// CHECK: } // end sil function '_T0s3set6holderys6HolderVz_tF'
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func get(holder holder: inout Holder) -> C {
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return holder.value
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}
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// CHECK-LABEL: sil hidden @_T0s3get6holders1CCs6HolderVz_tF : $@convention(thin) (@inout Holder) -> @owned C {
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// CHECK: bb0([[ADDR:%.*]] : @trivial $*Holder):
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// CHECK-NEXT: debug_value_addr %0 : $*Holder, var, name "holder", argno 1
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// CHECK-NEXT: [[READ:%.*]] = begin_access [read] [unknown] [[ADDR]] : $*Holder
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// CHECK-NEXT: [[T0:%.*]] = struct_element_addr [[READ]] : $*Holder, #Holder.value
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// CHECK-NEXT: [[T1:%.*]] = load [trivial] [[T0]] : $*@sil_unmanaged C
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// CHECK-NEXT: [[T2:%.*]] = unmanaged_to_ref [[T1]]
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// CHECK-NEXT: [[T2_COPY:%.*]] = copy_value [[T2]]
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// CHECK-NEXT: end_access [[READ]] : $*Holder
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// CHECK-NEXT: return [[T2_COPY]]
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func project(fn fn: () -> Holder) -> C {
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return fn().value
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}
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// CHECK-LABEL: sil hidden @_T0s7project2fns1CCs6HolderVyc_tF : $@convention(thin) (@owned @noescape @callee_guaranteed () -> Holder) -> @owned C {
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// CHECK: bb0([[FN:%.*]] : @owned $@noescape @callee_guaranteed () -> Holder):
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// CHECK: [[BORROWED_FN:%.*]] = begin_borrow [[FN]]
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// CHECK-NEXT: [[BORROWED_FN_COPY:%.*]] = copy_value [[BORROWED_FN]]
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// CHECK-NEXT: [[BORROW:%.*]] = begin_borrow [[BORROWED_FN_COPY]]
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// CHECK-NEXT: [[T0:%.*]] = apply [[BORROW]]()
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// CHECK-NEXT: end_borrow [[BORROW]]
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// CHECK-NEXT: [[T1:%.*]] = struct_extract [[T0]] : $Holder, #Holder.value
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// CHECK-NEXT: [[T2:%.*]] = unmanaged_to_ref [[T1]]
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// CHECK-NEXT: [[COPIED_T2:%.*]] = copy_value [[T2]]
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// CHECK-NEXT: destroy_value [[BORROWED_FN_COPY]]
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// CHECK-NEXT: end_borrow [[BORROWED_FN]] from [[FN]]
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// CHECK-NEXT: destroy_value [[FN]]
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// CHECK-NEXT: return [[COPIED_T2]]
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