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55 lines
1.9 KiB
Swift
55 lines
1.9 KiB
Swift
// RUN: %target-swift-emit-silgen -module-name switch_default %s | %FileCheck %s
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class Klass {}
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protocol Protocol {}
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enum Enum {
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case value1(Klass)
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case value2(Protocol)
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}
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// CHECK-LABEL: sil hidden [ossa] @$s14switch_default33testAddressOnlySubjectDefaultCaseyyAA4EnumOSgF : $@convention(thin) (@in_guaranteed Optional<Enum>) -> () {
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// CHECK: bb0([[ARG:%.*]] :
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// CHECK: [[STACK:%.*]] = alloc_stack $Optional<Enum>
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// CHECK: copy_addr [[ARG]] to [init] [[STACK]]
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// CHECK: switch_enum_addr [[STACK]] : $*Optional<Enum>, case #Optional.some!enumelt: [[SOME_BB:bb[0-9]*]], default [[DEFAULT_BB:bb[0-9]*]]
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//
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// CHECK: [[SOME_BB]]:
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// CHECK: [[STACK_1:%.*]] = alloc_stack $Optional<Enum>
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// CHECK: copy_addr [[STACK]] to [init] [[STACK_1]]
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// CHECK: [[TAKEN_ADDR:%.*]] = unchecked_take_enum_data_addr [[STACK_1]]
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// CHECK: switch_enum_addr [[TAKEN_ADDR]] : $*Enum, case #Enum.value2!enumelt: [[VALUE2_BB:bb[0-9]*]], default [[DEFAULT_BB_2:bb[0-9]*]]
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//
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// CHECK: [[VALUE2_BB]]:
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// CHECK: [[TAKEN_TAKEN_ADDR:%.*]] = unchecked_take_enum_data_addr [[TAKEN_ADDR]]
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// CHECK: destroy_addr [[TAKEN_TAKEN_ADDR]]
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// CHECK: dealloc_stack [[STACK_1]]
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// CHECK: destroy_addr [[STACK]]
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// CHECK: dealloc_stack [[STACK]]
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// CHECK: br [[EXIT_BB:bb[0-9]+]]
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//
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// We used to leak here!
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// CHECK: [[DEFAULT_BB_2]]:
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// CHECK: destroy_addr [[TAKEN_ADDR]]
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// CHECK: dealloc_stack [[STACK_1]]
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// CHECK: br [[CONT_BB:bb[0-9]*]]
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//
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// CHECK: [[DEFAULT_BB]]:
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// CHECK: br [[CONT_BB]]
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//
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// CHECK: [[CONT_BB]]:
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// CHECK: destroy_addr [[STACK]]
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// CHECK: dealloc_stack [[STACK]]
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// CHECK: br [[EXIT_BB]]
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//
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// CHECK: [[EXIT_BB]]:
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// CHECK-NEXT: tuple
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// CHECK-NEXT: return
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// } // end sil function '$s14switch_default33testAddressOnlySubjectDefaultCaseyyAA4EnumOSgF'
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func testAddressOnlySubjectDefaultCase(_ e: Enum?) {
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switch (e) {
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case .value2: return
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default: return
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}
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}
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