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34 lines
1.2 KiB
Swift
34 lines
1.2 KiB
Swift
// RUN: %target-swift-frontend -parse-stdlib -emit-silgen %s | %FileCheck %s
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import Swift
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final class D {}
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// Make sure that we insert the borrow for a ref_element_addr lvalue in the
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// proper place.
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final class C {
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var d: D = D()
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}
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func useD(_ d: D) {}
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// CHECK-LABEL: sil hidden @_T06borrow44lvalueBorrowShouldBeAtEndOfFormalAccessScope{{.*}} : $@convention(thin) () -> () {
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// CHECK: bb0:
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// CHECK: [[BOX:%.*]] = alloc_box ${ var C }, var, name "c"
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// CHECK: [[PB_BOX:%.*]] = project_box [[BOX]]
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// CHECK: [[FUNC:%.*]] = function_ref @_T06borrow4useD{{.*}} : $@convention(thin) (@owned D) -> ()
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// CHECK: [[ACCESS:%.*]] = begin_access [read] [unknown] [[PB_BOX]] : $*C
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// CHECK: [[CLASS:%.*]] = load [copy] [[ACCESS]]
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// CHECK: [[BORROWED_CLASS:%.*]] = begin_borrow [[CLASS]]
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// CHECK: [[OFFSET:%.*]] = ref_element_addr [[BORROWED_CLASS]]
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// CHECK: [[LOADED_VALUE:%.*]] = load [copy] [[OFFSET]]
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// CHECK: end_borrow [[BORROWED_CLASS]] from [[CLASS]]
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// CHECK: apply [[FUNC]]([[LOADED_VALUE]])
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// CHECK: destroy_value [[CLASS]]
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// CHECK: destroy_value [[BOX]]
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// CHECK: } // end sil function '_T06borrow44lvalueBorrowShouldBeAtEndOfFormalAccessScope{{.*}}'
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func lvalueBorrowShouldBeAtEndOfFormalAccessScope() {
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var c = C()
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useD(c.d)
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}
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