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swift-mirror/test/SILGen/enum_resilience.swift
T
Kavon Farvardin d2bd562799 Test: send shadow RUN lines to /dev/null 
The opaque values test coverage I initially added will emit to
stdout, which is noisy for people's logs if the test is failing for
some other reason.
2026-06-30 17:40:48 -07:00

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Swift
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// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -emit-module -enable-library-evolution -emit-module-path=%t/resilient_struct.swiftmodule -module-name=resilient_struct %S/../Inputs/resilient_struct.swift
// RUN: %target-swift-frontend -emit-module -enable-library-evolution -emit-module-path=%t/resilient_enum.swiftmodule -module-name=resilient_enum -I %t %S/../Inputs/resilient_enum.swift
// RUN: %target-swift-emit-silgen-ossa -o /dev/null -enable-sil-opaque-values -Xllvm -sil-print-types -module-name enum_resilience -I %t -enable-library-evolution %s
// RUN: %target-swift-emit-silgen -Xllvm -sil-print-types -module-name enum_resilience -I %t -enable-library-evolution %s | %FileCheck %s
import resilient_enum
// Resilient enums are always address-only, and switches must include
// a default case
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience15resilientSwitchyy0c1_A06MediumOF : $@convention(thin) (@in_guaranteed Medium) -> ()
// CHECK: [[BOX:%.*]] = alloc_stack $Medium
// CHECK-NEXT: copy_addr %0 to [init] [[BOX]]
// CHECK-NEXT: [[METATYPE:%.+]] = value_metatype $@thick Medium.Type, [[BOX]] : $*Medium
// CHECK-NEXT: switch_enum_addr [[BOX]] : $*Medium, case #Medium.Paper!enumelt: bb1, case #Medium.Canvas!enumelt: bb2, case #Medium.Pamphlet!enumelt: bb3, case #Medium.Postcard!enumelt: bb4, default bb5
// CHECK: bb1:
// CHECK-NEXT: dealloc_stack [[BOX]]
// CHECK-NEXT: br bb6
// CHECK: bb2:
// CHECK-NEXT: dealloc_stack [[BOX]]
// CHECK-NEXT: br bb6
// CHECK: bb3:
// CHECK-NEXT: [[INDIRECT_ADDR:%.*]] = unchecked_take_enum_data_addr [[BOX]]
// CHECK-NEXT: [[INDIRECT:%.*]] = load [take] [[INDIRECT_ADDR]]
// CHECK-NEXT: [[PAYLOAD:%.*]] = project_box [[INDIRECT]]
// CHECK-NEXT: destroy_value [[INDIRECT]]
// CHECK-NEXT: dealloc_stack [[BOX]]
// CHECK-NEXT: br bb6
// CHECK: bb4:
// CHECK-NEXT: [[PAYLOAD_ADDR:%.*]] = unchecked_take_enum_data_addr [[BOX]]
// CHECK-NEXT: destroy_addr [[PAYLOAD_ADDR]]
// CHECK-NEXT: dealloc_stack [[BOX]]
// CHECK-NEXT: br bb6
// CHECK: bb5:
// CHECK-NEXT: // function_ref
// CHECK-NEXT: [[DIAGNOSE:%.+]] = function_ref @$ss27_diagnoseUnexpectedEnumCase
// CHECK-NEXT: = apply [[DIAGNOSE]]<Medium>([[METATYPE]]) : $@convention(thin) <τ_0_0> (@thick τ_0_0.Type) -> Never
// CHECK-NEXT: unreachable
// CHECK: bb6:
// CHECK-NOT: destroy_addr %0
// CHECK-NEXT: [[RESULT:%.*]] = tuple ()
// CHECK-NEXT: return [[RESULT]]
func resilientSwitch(_ m: Medium) {
switch m {
case .Paper: ()
case .Canvas: ()
case .Pamphlet: ()
case .Postcard: ()
}
}
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience22resilientSwitchDefaultys5Int32V0c1_A06MediumOF : $@convention(thin) (@in_guaranteed Medium) -> Int32 {
func resilientSwitchDefault(_ m: Medium) -> Int32 {
// CHECK: switch_enum_addr %2 : $*Medium, case #Medium.Paper!enumelt: [[PAPER:[^ ]+]], case #Medium.Canvas!enumelt: [[CANVAS:[^ ]+]], default [[DEFAULT:[^ ]+]]
switch m {
// CHECK: [[PAPER]]:
// CHECK: integer_literal $Builtin.IntLiteral, 0
case .Paper: return 0
// CHECK: [[CANVAS]]:
// CHECK: integer_literal $Builtin.IntLiteral, 1
case .Canvas: return 1
// CHECK: [[DEFAULT]]:
// CHECK: integer_literal $Builtin.IntLiteral, -1
default: return -1
}
} // CHECK: end sil function '$s15enum_resilience22resilientSwitchDefaultys5Int32V0c1_A06MediumOF'
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience26resilientSwitchUnknownCaseys5Int32V0c1_A06MediumOF : $@convention(thin) (@in_guaranteed Medium) -> Int32 {
func resilientSwitchUnknownCase(_ m: Medium) -> Int32 {
// CHECK: switch_enum_addr %2 : $*Medium, case #Medium.Paper!enumelt: [[PAPER:[^ ]+]], case #Medium.Canvas!enumelt: [[CANVAS:[^ ]+]], default [[DEFAULT:[^ ]+]]
switch m {
// CHECK: [[PAPER]]:
// CHECK: integer_literal $Builtin.IntLiteral, 0
case .Paper: return 0
// CHECK: [[CANVAS]]:
// CHECK: integer_literal $Builtin.IntLiteral, 1
case .Canvas: return 1
// CHECK: [[DEFAULT]]:
// CHECK: integer_literal $Builtin.IntLiteral, -1
@unknown case _: return -1
}
} // CHECK: end sil function '$s15enum_resilience26resilientSwitchUnknownCaseys5Int32V0c1_A06MediumOF'
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience36resilientSwitchUnknownCaseExhaustiveys5Int32V0c1_A06MediumOF : $@convention(thin) (@in_guaranteed Medium) -> Int32 {
func resilientSwitchUnknownCaseExhaustive(_ m: Medium) -> Int32 {
// CHECK: switch_enum_addr %2 : $*Medium, case #Medium.Paper!enumelt: [[PAPER:[^ ]+]], case #Medium.Canvas!enumelt: [[CANVAS:[^ ]+]], case #Medium.Pamphlet!enumelt: [[PAMPHLET:[^ ]+]], case #Medium.Postcard!enumelt: [[POSTCARD:[^ ]+]], default [[DEFAULT:[^ ]+]]
switch m {
// CHECK: [[PAPER]]:
// CHECK: integer_literal $Builtin.IntLiteral, 0
case .Paper: return 0
// CHECK: [[CANVAS]]:
// CHECK: integer_literal $Builtin.IntLiteral, 1
case .Canvas: return 1
// CHECK: [[PAMPHLET]]:
// CHECK: integer_literal $Builtin.IntLiteral, 2
case .Pamphlet: return 2
// CHECK: [[POSTCARD]]:
// CHECK: integer_literal $Builtin.IntLiteral, 3
case .Postcard: return 3
// CHECK: [[DEFAULT]]:
// CHECK: integer_literal $Builtin.IntLiteral, -1
@unknown case _: return -1
}
}
// Indirect enums are still address-only, because the discriminator is stored
// as part of the value, so we cannot resiliently make assumptions about the
// enum's size
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience21indirectResilientEnumyy010resilient_A016IndirectApproachOF : $@convention(thin) (@in_guaranteed IndirectApproach) -> ()
func indirectResilientEnum(_ ia: IndirectApproach) {}
public enum MyResilientEnum {
case kevin
case loki
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience15MyResilientEnumOACycfC : $@convention(method) (@thin MyResilientEnum.Type) -> @out MyResilientEnum
// CHECK: [[SELF_BOX:%.*]] = alloc_box ${ var MyResilientEnum }, var, name "self"
// CHECK: [[SELF_TMP:%.*]] = mark_uninitialized [delegatingself] [[SELF_BOX]] : ${ var MyResilientEnum }
// CHECK: [[LIFETIME:%.*]] = begin_borrow [var_decl] [[SELF_TMP]]
// CHECK: [[SELF_ADDR:%.*]] = project_box [[LIFETIME]] : ${ var MyResilientEnum }, 0
// CHECK: [[NEW_SELF:%.*]] = enum $MyResilientEnum, #MyResilientEnum.loki!enumelt
// CHECK: [[ACCESS:%.*]] = begin_access [modify] [unknown] [[SELF_ADDR]] : $*MyResilientEnum
// CHECK: assign [[NEW_SELF]] to [[ACCESS]] : $*MyResilientEnum
// CHECK: end_access [[ACCESS]] : $*MyResilientEnum
// CHECK: copy_addr [[SELF_ADDR]] to [init] %0 : $*MyResilientEnum
// CHECK: destroy_value [[SELF_TMP]] : ${ var MyResilientEnum }
// CHECK: return
init() {
self = .loki
}
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience15MyResilientEnumO9getAHorseACyFZ : $@convention(method) (@thin MyResilientEnum.Type) -> @out MyResilientEnum
// CHECK: [[NEW_SELF:%.*]] = enum $MyResilientEnum, #MyResilientEnum.loki!enumelt
// CHECK: store [[NEW_SELF]] to [trivial] %0 : $*MyResilientEnum
// CHECK: return
static func getAHorse() -> MyResilientEnum {
return .loki
}
}
public enum MoreHorses {
case marshall(Int)
case seuss(AnyObject)
// CHECK-LABEL: sil hidden [ossa] @$s15enum_resilience10MoreHorsesOACycfC : $@convention(method) (@thin MoreHorses.Type) -> @out MoreHorses
// CHECK: [[SELF_BOX:%.*]] = alloc_box ${ var MoreHorses }, var, name "self"
// CHECK: [[SELF_TMP:%.*]] = mark_uninitialized [delegatingself] [[SELF_BOX]] : ${ var MoreHorses }
// CHECK: [[SELF_LIFETIME:%.*]] = begin_borrow [lexical] [var_decl] [[SELF_TMP]]
// CHECK: [[SELF_ADDR:%.*]] = project_box [[SELF_LIFETIME]] : ${ var MoreHorses }, 0
// CHECK: [[BUILTIN_INT:%.*]] = integer_literal $Builtin.IntLiteral, 0
// CHECK: [[INT_METATYPE:%.*]] = metatype $@thin Int.Type
// CHECK: [[INT_CTOR:%.*]] = function_ref @$sSi22_builtinIntegerLiteralSiBI_tcfC : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK: [[PAYLOAD:%.*]] = apply [[INT_CTOR]]([[BUILTIN_INT]], [[INT_METATYPE]]) : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK: [[NEW_SELF:%.*]] = enum $MoreHorses, #MoreHorses.marshall!enumelt, [[PAYLOAD]] : $Int
// CHECK: [[ACCESS:%.*]] = begin_access [modify] [unknown] [[SELF_ADDR]] : $*MoreHorses
// CHECK: assign [[NEW_SELF]] to [[ACCESS]] : $*MoreHorses
// CHECK: end_access [[ACCESS]] : $*MoreHorses
// CHECK: copy_addr [[SELF_ADDR]] to [init] %0 : $*MoreHorses
// CHECK: destroy_value [[SELF_TMP]] : ${ var MoreHorses }
// CHECK: return
init() {
self = .marshall(0)
}
}
public func referenceCaseConstructors() {
_ = MoreHorses.marshall
_ = MoreHorses.seuss
}
// CHECK-LABEL: sil [ossa] @$s15enum_resilience15resilientSwitchyyAA15MyResilientEnumOF : $@convention(thin) (@in_guaranteed MyResilientEnum) -> ()
// CHECK: [[ENUM:%.*]] = load [trivial] %0
// CHECK: switch_enum [[ENUM]] : $MyResilientEnum, case #MyResilientEnum.kevin!enumelt: bb1, case #MyResilientEnum.loki!enumelt: bb2
// CHECK: return
public func resilientSwitch(_ e: MyResilientEnum) {
switch e {
case .kevin: ()
case .loki: ()
}
}
// CHECK-LABEL: sil [ossa] @$s15enum_resilience15resilientIfCaseySbAA15MyResilientEnumOF : $@convention(thin) (@in_guaranteed MyResilientEnum) -> Bool
// CHECK: [[ENUM:%.*]] = load [trivial] %0 : $*MyResilientEnum
// CHECK: switch_enum [[ENUM]] : $MyResilientEnum, case #MyResilientEnum.kevin!enumelt: bb1, case #MyResilientEnum.loki!enumelt: bb2
// CHECK: return
public func resilientIfCase(_ e: MyResilientEnum) -> Bool {
if case .kevin = e {
return true
} else {
return false
}
}
// Inlinable functions must lower the switch as if it came from outside the module
// CHECK-LABEL: sil [serialized] [ossa] @$s15enum_resilience15inlinableSwitchyyAA15MyResilientEnumOF : $@convention(thin) (@in_guaranteed MyResilientEnum) -> ()
// CHECK: [[ENUM:%.*]] = alloc_stack $MyResilientEnum
// CHECK: copy_addr %0 to [init] [[ENUM]] : $*MyResilientEnum
// CHECK: switch_enum_addr [[ENUM]] : $*MyResilientEnum, case #MyResilientEnum.kevin!enumelt: bb1, case #MyResilientEnum.loki!enumelt: bb2, default bb3
// CHECK: return
@inlinable public func inlinableSwitch(_ e: MyResilientEnum) {
switch e {
case .kevin: ()
case .loki: ()
}
}
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