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Mangling: consider bound generic types for substitutions
This shrinks the name length if the same bound generic type is used multiple times, like: func foo(_ x: [Int], _ y: [Int])
1 parent dfcad1a commit fcd79c0

34 files changed

+139
-116
lines changed

‎docs/ABI.rst

+4-2
Original file line numberDiff line numberDiff line change
@@ -997,7 +997,7 @@ Types
997997
type ::= context decl-name 'a' // Type alias (DWARF only)
998998
type ::= function-signature 'c' // function type
999999
type ::= function-signature 'X' FUNCTION-KIND // special function type
1000-
type ::= type 'y' (type* '_')* type* 'G' // bound generic type (one type-list per nesting level of type)
1000+
type ::= bound-generic-type
10011001
type ::= type 'Sg' // optional type, shortcut for: type 'ySqG'
10021002
type ::= type 'Xo' // @unowned type
10031003
type ::= type 'Xu' // @unowned(unsafe) type
@@ -1013,7 +1013,9 @@ Types
10131013
type ::= type 'Xp' // existential metatype without representation
10141014
type ::= type 'Xm' METATYPE-REPR // existential metatype with representation
10151015
type ::= 'Xe' // error or unresolved type
1016-
1016+
1017+
bound-generic-type ::= type 'y' (type* '_')* type* 'G' // one type-list per nesting level of type
1018+
bound-generic-type ::= substitution
10171019

10181020
FUNCTION-KIND ::= 'f' // @thin function type
10191021
FUNCTION-KIND ::= 'U' // uncurried function type (currently not used)

‎lib/AST/ASTMangler.cpp

+12-6
Original file line numberDiff line numberDiff line change
@@ -589,18 +589,24 @@ void ASTMangler::appendType(Type type) {
589589
case TypeKind::BoundGenericEnum:
590590
case TypeKind::BoundGenericStruct:
591591
if (type->isSpecialized()) {
592+
// Try to mangle the entire name as a substitution.
593+
if (tryMangleSubstitution(type.getPointer()))
594+
return;
595+
592596
NominalTypeDecl *NDecl = type->getAnyNominal();
593597
if (isStdlibType(NDecl) && NDecl->getName().str() == "Optional") {
594598
auto GenArgs = type->castTo<BoundGenericType>()->getGenericArgs();
595599
assert(GenArgs.size() == 1);
596600
appendType(GenArgs[0]);
597-
return appendOperator("Sg");
601+
appendOperator("Sg");
602+
} else {
603+
appendNominalType(NDecl);
604+
bool isFirstArgList = true;
605+
appendBoundGenericArgs(type, isFirstArgList);
606+
appendOperator("G");
598607
}
599-
600-
appendNominalType(NDecl);
601-
bool isFirstArgList = true;
602-
appendBoundGenericArgs(type, isFirstArgList);
603-
return appendOperator("G");
608+
addSubstitution(type.getPointer());
609+
return;
604610
}
605611
appendNominalType(tybase->getAnyNominal());
606612
return;

‎lib/Basic/Demangler.cpp

+11-5
Original file line numberDiff line numberDiff line change
@@ -694,10 +694,14 @@ NodePointer Demangler::demangleKnownType() {
694694
return createSwiftType(Node::Kind::Structure, "String");
695695
case 'u':
696696
return createSwiftType(Node::Kind::Structure, "UInt");
697-
case 'g':
698-
return createType(createWithChildren(Node::Kind::BoundGenericEnum,
699-
createSwiftType(Node::Kind::Enum, "Optional"),
700-
createWithChild(Node::Kind::TypeList, popNode(Node::Kind::Type))));
697+
case 'g': {
698+
NodePointer OptionalTy =
699+
createType(createWithChildren(Node::Kind::BoundGenericEnum,
700+
createSwiftType(Node::Kind::Enum, "Optional"),
701+
createWithChild(Node::Kind::TypeList, popNode(Node::Kind::Type))));
702+
addSubstitution(OptionalTy);
703+
return OptionalTy;
704+
}
701705
default:
702706
return nullptr;
703707
}
@@ -1043,7 +1047,9 @@ NodePointer Demangler::demangleBoundGenericType() {
10431047
return nullptr;
10441048
}
10451049
NodePointer Nominal = popTypeAndGetNominal();
1046-
return createType(demangleBoundGenericArgs(Nominal, TypeListList, 0));
1050+
NodePointer NTy = createType(demangleBoundGenericArgs(Nominal, TypeListList, 0));
1051+
addSubstitution(NTy);
1052+
return NTy;
10471053
}
10481054

10491055
NodePointer Demangler::demangleBoundGenericArgs(NodePointer Nominal,

‎lib/Basic/Remangler.cpp

+9
Original file line numberDiff line numberDiff line change
@@ -410,11 +410,16 @@ void Remangler::mangleNominalType(Node *node, char TypeOp) {
410410

411411
void Remangler::mangleAnyNominalType(Node *node) {
412412
if (isSpecialized(node)) {
413+
SubstitutionEntry entry;
414+
if (trySubstitution(node, entry))
415+
return;
416+
413417
NodePointer unboundType = getUnspecialized(node, Factory);
414418
mangleAnyNominalType(unboundType);
415419
char Separator = 'y';
416420
mangleGenericArgs(node, Separator);
417421
Buffer << 'G';
422+
addSubstitution(entry);
418423
return;
419424
}
420425
switch (node->getKind()) {
@@ -510,8 +515,12 @@ void Remangler::mangleBoundGenericEnum(Node *node) {
510515
Node *Id = Enum->getChild(1);
511516
if (Mod->getKind() == Node::Kind::Module && Mod->getText() == STDLIB_NAME &&
512517
Id->getKind() == Node::Kind::Identifier && Id->getText() == "Optional") {
518+
SubstitutionEntry entry;
519+
if (trySubstitution(node, entry))
520+
return;
513521
mangleSingleChildNode(node->getChild(1));
514522
Buffer << "Sg";
523+
addSubstitution(entry);
515524
return;
516525
}
517526
mangleAnyNominalType(node);

‎test/ClangImporter/attr-swift_private.swift

+1-1
Original file line numberDiff line numberDiff line change
@@ -97,7 +97,7 @@ public func testTopLevel() {
9797

9898
// CHECK-LABEL: define linkonce_odr hidden {{.+}} @_T0So3BarCSQyABGs5Int32V2___tcfcTO
9999
// CHECK: @"\01L_selector(init:)"
100-
// CHECK-LABEL: define linkonce_odr hidden {{.+}} @_T0So3BarCSQyABGs5Int32V9__twoArgs_AD5othertcfcTO
100+
// CHECK-LABEL: define linkonce_odr hidden {{.+}} @_T0So3BarCSQyABGs5Int32V9__twoArgs_AE5othertcfcTO
101101
// CHECK: @"\01L_selector(initWithTwoArgs:other:)"
102102
// CHECK-LABEL: define linkonce_odr hidden {{.+}} @_T0So3BarCSQyABGs5Int32V8__oneArg_tcfcTO
103103
// CHECK: @"\01L_selector(initWithOneArg:)"

‎test/DebugInfo/generic_arg5.swift

+1-1
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@ public struct S<Type>
66

77
public func foo<Type>(_ values : [S<Type>])
88
{
9-
// CHECK: define {{.*}}_T012generic_arg53fooySayAA1SVyxGGlFADyxGSgADyxGcfU_
9+
// CHECK: define {{.*}}_T012generic_arg53fooySayAA1SVyxGGlFAESgAEcfU_
1010
// CHECK: store %[[TY:.*]]* %1, %[[TY]]** %[[ALLOCA:.*]], align
1111
// CHECK: call void @llvm.dbg.declare(metadata %[[TY]]** %[[ALLOCA]],
1212
// CHECK-SAME: metadata ![[ARG:.*]], metadata ![[EXPR:.*]])

‎test/DebugInfo/patternvars.swift

+1-1
Original file line numberDiff line numberDiff line change
@@ -33,7 +33,7 @@ public func mangle(s: [UnicodeScalar]) -> [UnicodeScalar] {
3333
// which shares the storage with the expression in the switch statement. Make
3434
// sure we only emit live range extensions for the storage once per basic block.
3535

36-
// CHECK: define {{.*}}@_T011patternvars6mangleSayAA13UnicodeScalarVGSayADG1s_tFAdDcfU_
36+
// CHECK: define {{.*}}@_T011patternvars6mangleSayAA13UnicodeScalarVGAE1s_tFAdDcfU_
3737
// CHECK: call void asm sideeffect "", "r"
3838
// CHECK-NOT: call void asm sideeffect "", "r"
3939
// CHECK: br {{.*}}label

‎test/Demangle/Inputs/manglings.txt

+1-1
Original file line numberDiff line numberDiff line change
@@ -192,7 +192,7 @@ _TTSrq5Si___TF4test7genericurFxx ---> generic not re-abstracted specialization <
192192
_TPA__TTRXFo_oSSoSS_dSb_XFo_iSSiSS_dSb_ ---> {T:_TTRXFo_oSSoSS_dSb_XFo_iSSiSS_dSb_} partial apply forwarder for reabstraction thunk helper from @callee_owned (@owned Swift.String, @owned Swift.String) -> (@unowned Swift.Bool) to @callee_owned (@in Swift.String, @in Swift.String) -> (@unowned Swift.Bool)
193193
_TPAo__TTRGrXFo_dGSPx__dGSPx_zoPs5Error__XFo_iGSPx__iGSPx_zoPS___ ---> {T:_TTRGrXFo_dGSPx__dGSPx_zoPs5Error__XFo_iGSPx__iGSPx_zoPS___} partial apply ObjC forwarder for reabstraction thunk helper <A> from @callee_owned (@unowned Swift.UnsafePointer<A>) -> (@unowned Swift.UnsafePointer<A>, @error @owned Swift.Error) to @callee_owned (@in Swift.UnsafePointer<A>) -> (@out Swift.UnsafePointer<A>, @error @owned Swift.Error)
194194
_T0SSSSSbIxxxd_SSSSSbIxiid_TRTA ---> {T:_T0SSSSSbIxxxd_SSSSSbIxiid_TR} partial apply forwarder for reabstraction thunk helper from @callee_owned (@owned Swift.String, @owned Swift.String) -> (@unowned Swift.Bool) to @callee_owned (@in Swift.String, @in Swift.String) -> (@unowned Swift.Bool)
195-
_T0SPyxGSPyxGs5Error_pIxydzo_SPyxGSPyxGsAA_pIxirzo_lTRTa ---> {T:_T0SPyxGSPyxGs5Error_pIxydzo_SPyxGSPyxGsAA_pIxirzo_lTR} partial apply ObjC forwarder for reabstraction thunk helper <A> from @callee_owned (@unowned Swift.UnsafePointer<A>) -> (@unowned Swift.UnsafePointer<A>, @error @owned Swift.Error) to @callee_owned (@in Swift.UnsafePointer<A>) -> (@out Swift.UnsafePointer<A>, @error @owned Swift.Error)
195+
_T0SPyxGAAs5Error_pIxydzo_AaAsAB_pIxirzo_lTRTa ---> {T:_T0SPyxGAAs5Error_pIxydzo_AaAsAB_pIxirzo_lTR} partial apply ObjC forwarder for reabstraction thunk helper <A> from @callee_owned (@unowned Swift.UnsafePointer<A>) -> (@unowned Swift.UnsafePointer<A>, @error @owned Swift.Error) to @callee_owned (@in Swift.UnsafePointer<A>) -> (@out Swift.UnsafePointer<A>, @error @owned Swift.Error)
196196
_TiC4Meow5MyCls9subscriptFT1iSi_Sf ---> Meow.MyCls.subscript (i : Swift.Int) -> Swift.Float
197197
_TF8manglingX22egbpdajGbuEbxfgehfvwxnFT_T_ ---> mangling.ليهمابتكلموشعربي؟ () -> ()
198198
_TF8manglingX24ihqwcrbEcvIaIdqgAFGpqjyeFT_T_ ---> mangling.他们为什么不说中文 () -> ()

‎test/IRGen/associated_type_witness.swift

+3-3
Original file line numberDiff line numberDiff line change
@@ -41,8 +41,8 @@ struct GenericWithUniversal<T> : Assocked {
4141
// Witness table for Fulfilled : Assocked.
4242
// GLOBAL-LABEL: @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzlWP = hidden constant [3 x i8*] [
4343
// GLOBAL-SAME: i8* bitcast (%swift.type* (%swift.type*, i8**)* @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocWt to i8*)
44-
// GLOBAL-SAME: i8* bitcast (i8** (%swift.type*, %swift.type*, i8**)* @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaEPWT to i8*)
4544
// GLOBAL-SAME: i8* bitcast (i8** (%swift.type*, %swift.type*, i8**)* @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaFPWT to i8*)
45+
// GLOBAL-SAME: i8* bitcast (i8** (%swift.type*, %swift.type*, i8**)* @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaGPWT to i8*)
4646
// GLOBAL-SAME: ]
4747
struct Fulfilled<T : P & Q> : Assocked {
4848
typealias Assoc = T
@@ -56,14 +56,14 @@ struct Fulfilled<T : P & Q> : Assocked {
5656
// CHECK-NEXT: ret %swift.type* [[T2]]
5757

5858
// Associated type witness table access function for Fulfilled.Assoc : P.
59-
// CHECK-LABEL: define internal i8** @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaEPWT(%swift.type* %"Fulfilled<T>.Assoc", %swift.type* %"Fulfilled<T>", i8** %"Fulfilled<T>.Assocked")
59+
// CHECK-LABEL: define internal i8** @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaFPWT(%swift.type* %"Fulfilled<T>.Assoc", %swift.type* %"Fulfilled<T>", i8** %"Fulfilled<T>.Assocked")
6060
// CHECK: [[T0:%.*]] = bitcast %swift.type* %"Fulfilled<T>" to i8***
6161
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8**, i8*** [[T0]], i64 4
6262
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** [[T1]], align 8, !invariant.load
6363
// CHECK-NEXT: ret i8** [[T2]]
6464

6565
// Associated type witness table access function for Fulfilled.Assoc : Q.
66-
// CHECK-LABEL: define internal i8** @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaFPWT(%swift.type* %"Fulfilled<T>.Assoc", %swift.type* %"Fulfilled<T>", i8** %"Fulfilled<T>.Assocked")
66+
// CHECK-LABEL: define internal i8** @_T023associated_type_witness9FulfilledVyxGAA8AssockedAaA1PRzAA1QRzl5AssocAaGPWT(%swift.type* %"Fulfilled<T>.Assoc", %swift.type* %"Fulfilled<T>", i8** %"Fulfilled<T>.Assocked")
6767
// CHECK: [[T0:%.*]] = bitcast %swift.type* %"Fulfilled<T>" to i8***
6868
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8**, i8*** [[T0]], i64 5
6969
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** [[T1]], align 8, !invariant.load

‎test/IRGen/dependent_reabstraction.swift

+1-1
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@ protocol A {
88
}
99

1010
struct X<Y> : A {
11-
// CHECK-LABEL: define hidden swiftcc void @_T023dependent_reabstraction1XVyxGAA1AAAlAaDP1by1BQzFTW(%swift.type** noalias nocapture dereferenceable({{.*}}), %T23dependent_reabstraction1XV* noalias nocapture swiftself, %swift.type* %Self, i8** %SelfWitnessTable)
11+
// CHECK-LABEL: define hidden swiftcc void @_T023dependent_reabstraction1XVyxGAA1AAAlAaEP1by1BQzFTW(%swift.type** noalias nocapture dereferenceable({{.*}}), %T23dependent_reabstraction1XV* noalias nocapture swiftself, %swift.type* %Self, i8** %SelfWitnessTable)
1212
func b(_ b: X.Type) {
1313
let x: Any = b
1414
markUsed(b as X.Type)

‎test/IRGen/newtype.swift

+3-3
Original file line numberDiff line numberDiff line change
@@ -132,14 +132,14 @@ public func anchor() -> Bool {
132132
}
133133

134134
class ObjCTest {
135-
// CHECK-LABEL: define hidden %0* @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAFSgFTo
135+
// CHECK-LABEL: define hidden %0* @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAGFTo
136136
// CHECK: [[CASTED:%.+]] = ptrtoint %0* %2 to i{{32|64}}
137-
// CHECK: [[RESULT:%.+]] = call swiftcc i{{32|64}} @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAFSgF(i{{32|64}} [[CASTED]], %T7newtype8ObjCTestC* swiftself {{%.+}})
137+
// CHECK: [[RESULT:%.+]] = call swiftcc i{{32|64}} @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAGF(i{{32|64}} [[CASTED]], %T7newtype8ObjCTestC* swiftself {{%.+}})
138138
// CHECK: [[OPAQUE_RESULT:%.+]] = inttoptr i{{32|64}} [[RESULT]] to %0*
139139
// CHECK: ret %0* [[OPAQUE_RESULT]]
140140
// CHECK: {{^}$}}
141141

142-
// OPT-LABEL: define hidden %0* @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAFSgFTo
142+
// OPT-LABEL: define hidden %0* @_T07newtype8ObjCTestC19optionalPassThroughSC11ErrorDomainVSgAGFTo
143143
// OPT: ret %0* %2
144144
// OPT: {{^}$}}
145145
@objc func optionalPassThrough(_ ed: ErrorDomain?) -> ErrorDomain? {

‎test/IRGen/objc_generic_protocol_conformance.swift

+2-2
Original file line numberDiff line numberDiff line change
@@ -9,5 +9,5 @@ protocol P {
99

1010
extension Foo: P {}
1111

12-
// SIL-LABEL: sil hidden [transparent] [thunk] @_T0So3FooCyxG33objc_generic_protocol_conformance1PACs9AnyObjectRzlAcDP3fooyyFTW {{.*}} @pseudogeneric
13-
// IR-LABEL: define hidden swiftcc void @_T0So3FooCyxG33objc_generic_protocol_conformance1PACs9AnyObjectRzlAcDP3fooyyFTW(%TSo3FooC** noalias nocapture swiftself dereferenceable({{4|8}}), %swift.type*{{( %Self)?}}, i8**{{( %SelfWitnessTable)?}})
12+
// SIL-LABEL: sil hidden [transparent] [thunk] @_T0So3FooCyxG33objc_generic_protocol_conformance1PADs9AnyObjectRzlAdEP3fooyyFTW {{.*}} @pseudogeneric
13+
// IR-LABEL: define hidden swiftcc void @_T0So3FooCyxG33objc_generic_protocol_conformance1PADs9AnyObjectRzlAdEP3fooyyFTW(%TSo3FooC** noalias nocapture swiftself dereferenceable({{4|8}}), %swift.type*{{( %Self)?}}, i8**{{( %SelfWitnessTable)?}})

‎test/IRGen/same_type_constraints.swift

+1-1
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@ public extension P where Foo == DefaultFoo<Self> {
1515
}
1616
}
1717

18-
// CHECK: define{{( protected)?}} swiftcc void @_T021same_type_constraints1PPAaaBRzAA10DefaultFooVyxG0E0RtzlE3fooAEyxGyF
18+
// CHECK: define{{( protected)?}} swiftcc void @_T021same_type_constraints1PPAaaBRzAA10DefaultFooVyxG0E0RtzlE3fooAFyF
1919

2020
// <rdar://26873036> IRGen crash with derived class declaring same-type constraint on constrained associatedtype.
2121
public class C1<T: Equatable> { }

‎test/SILGen/dependent_member_lowering.swift

+2-2
Original file line numberDiff line numberDiff line change
@@ -9,13 +9,13 @@ struct Foo<T>: P {
99
typealias A = T.Type
1010

1111
func f(_ t: T.Type) {}
12-
// CHECK-LABEL: sil hidden [transparent] [thunk] @_T025dependent_member_lowering3FooVyxGAA1PAAlAaDP1fy1AQzFTW : $@convention(witness_method) <τ_0_0> (@in @thick τ_0_0.Type, @in_guaranteed Foo<τ_0_0>) -> ()
12+
// CHECK-LABEL: sil hidden [transparent] [thunk] @_T025dependent_member_lowering3FooVyxGAA1PAAlAaEP1fy1AQzFTW : $@convention(witness_method) <τ_0_0> (@in @thick τ_0_0.Type, @in_guaranteed Foo<τ_0_0>) -> ()
1313
// CHECK: bb0(%0 : $*@thick τ_0_0.Type, %1 : $*Foo<τ_0_0>):
1414
}
1515
struct Bar<T>: P {
1616
typealias A = (Int) -> T
1717

1818
func f(_ t: @escaping (Int) -> T) {}
19-
// CHECK-LABEL: sil hidden [transparent] [thunk] @_T025dependent_member_lowering3BarVyxGAA1PAAlAaDP1fy1AQzFTW : $@convention(witness_method) <τ_0_0> (@in @callee_owned (@in Int) -> @out τ_0_0, @in_guaranteed Bar<τ_0_0>) -> ()
19+
// CHECK-LABEL: sil hidden [transparent] [thunk] @_T025dependent_member_lowering3BarVyxGAA1PAAlAaEP1fy1AQzFTW : $@convention(witness_method) <τ_0_0> (@in @callee_owned (@in Int) -> @out τ_0_0, @in_guaranteed Bar<τ_0_0>) -> ()
2020
// CHECK: bb0(%0 : $*@callee_owned (@in Int) -> @out τ_0_0, %1 : $*Bar<τ_0_0>):
2121
}

‎test/SILGen/external_definitions.swift

+2-2
Original file line numberDiff line numberDiff line change
@@ -19,7 +19,7 @@ hasNoPrototype()
1919
// CHECK: [[NSANSE_RESULT:%.*]] = apply [[NSANSE]]([[ANSIBLE]])
2020
// CHECK: destroy_value [[ANSIBLE]] : $Optional<Ansible>
2121
// -- Referencing unapplied C function goes through a thunk
22-
// CHECK: [[NSANSE:%.*]] = function_ref @_T0SC6NSAnseSQySo7AnsibleCGSQyACGFTO : $@convention(thin) (@owned Optional<Ansible>) -> @owned Optional<Ansible>
22+
// CHECK: [[NSANSE:%.*]] = function_ref @_T0SC6NSAnseSQySo7AnsibleCGADFTO : $@convention(thin) (@owned Optional<Ansible>) -> @owned Optional<Ansible>
2323
// -- Referencing unprototyped C function passes no parameters
2424
// CHECK: [[NOPROTO:%.*]] = function_ref @hasNoPrototype : $@convention(c) () -> ()
2525
// CHECK: apply [[NOPROTO]]()
@@ -32,7 +32,7 @@ hasNoPrototype()
3232
// CHECK-LABEL: sil shared @_T0So8NSObjectC{{[_0-9a-zA-Z]*}}fC : $@convention(method) (@thick NSObject.Type) -> @owned NSObject
3333

3434
// -- Native Swift thunk for NSAnse
35-
// CHECK: sil shared [fragile] [thunk] @_T0SC6NSAnseSQySo7AnsibleCGSQyACGFTO : $@convention(thin) (@owned Optional<Ansible>) -> @owned Optional<Ansible> {
35+
// CHECK: sil shared [fragile] [thunk] @_T0SC6NSAnseSQySo7AnsibleCGADFTO : $@convention(thin) (@owned Optional<Ansible>) -> @owned Optional<Ansible> {
3636
// CHECK: bb0(%0 : $Optional<Ansible>):
3737
// CHECK: %1 = function_ref @NSAnse : $@convention(c) (Optional<Ansible>) -> @autoreleased Optional<Ansible>
3838
// CHECK: %2 = apply %1(%0) : $@convention(c) (Optional<Ansible>) -> @autoreleased Optional<Ansible>

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