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swift-mirror/test/SILGen/default_arguments.swift
John McCall ceff414820 Distinguish invocation and pattern substitutions on SILFunctionType. 
In order to allow this, I've had to rework the syntax of substituted function types; what was previously spelled `<T> in () -> T for <X>` is now spelled `@substituted <T> () -> T for <X>`.  I think this is a nice improvement for readability, but it did require me to churn a lot of test cases.

Distinguishing the substitutions has two chief advantages over the existing representation.  First, the semantics seem quite a bit clearer at use points; the `implicit` bit was very subtle and not always obvious how to use.  More importantly, it allows the expression of generic function types that must satisfy a particular generic abstraction pattern, which was otherwise impossible to express.

As an example of the latter, consider the following protocol conformance:

```
protocol P { func foo() }
struct A<T> : P { func foo() {} }
```

The lowered signature of `P.foo` is `<Self: P> (@in_guaranteed Self) -> ()`.  Without this change, the lowered signature of `A.foo`'s witness would be `<T> (@in_guaranteed A<T>) -> ()`, which does not preserve information about the conformance substitution in any useful way.  With this change, the lowered signature of this witness could be `<T> @substituted <Self: P> (@in_guaranteed Self) -> () for <A<T>>`, which nicely preserves the exact substitutions which relate the witness to the requirement.

When we adopt this, it will both obviate the need for the special witness-table conformance field in SILFunctionType and make it far simpler for the SILOptimizer to devirtualize witness methods.  This patch does not actually take that step, however; it merely makes it possible to do so.

As another piece of unfinished business, while `SILFunctionType::substGenericArgs()` conceptually ought to simply set the given substitutions as the invocation substitutions, that would disturb a number of places that expect that method to produce an unsubstituted type.  This patch only set invocation arguments when the generic type is a substituted type, which we currently never produce in type-lowering.

My plan is to start by producing substituted function types for accessors.  Accessors are an important case because the coroutine continuation function is essentially an implicit component of the function type which the current substitution rules simply erase the intended abstraction of.  They're also used in narrower ways that should exercise less of the optimizer.
2020-03-07 16:25:59 -05:00

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// RUN: %target-swift-emit-silgen -module-name default_arguments -Xllvm -sil-full-demangle -swift-version 4 %s | %FileCheck %s
// RUN: %target-swift-emit-silgen -module-name default_arguments -Xllvm -sil-full-demangle -swift-version 4 %s | %FileCheck %s --check-prefix=NEGATIVE
// __FUNCTION__ used as top-level parameter produces the module name.
// CHECK-LABEL: sil [ossa] @main
// CHECK: string_literal utf8 "default_arguments"
// Default argument for first parameter.
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments7defarg11i1d1sySi_SdSStFfA_ : $@convention(thin) () -> Int
// CHECK: [[LIT:%[0-9]+]] = integer_literal $Builtin.IntLiteral, 17
// CHECK: [[INT:%[0-9]+]] = metatype $@thin Int.Type
// CHECK: [[CVT:%[0-9]+]] = function_ref @$sSi22_builtinIntegerLiteralSiBI_tcfC
// CHECK: [[RESULT:%[0-9]+]] = apply [[CVT]]([[LIT]], [[INT]]) : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK: return [[RESULT]] : $Int
// Default argument for third parameter.
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments7defarg11i1d1sySi_SdSStFfA1_ : $@convention(thin) () -> @owned String
// CHECK: [[LIT:%[0-9]+]] = string_literal utf8 "Hello"
// CHECK: [[LEN:%[0-9]+]] = integer_literal $Builtin.Word, 5
// CHECK: [[STRING:%[0-9]+]] = metatype $@thin String.Type
// CHECK: [[CVT:%[0-9]+]] = function_ref @$sSS21_builtinStringLiteral17utf8CodeUnitCount7isASCIISSBp_BwBi1_tcfC
// CHECK: [[RESULT:%[0-9]+]] = apply [[CVT]]([[LIT]], [[LEN]], {{[^,]+}}, [[STRING]]) : $@convention(method)
// CHECK: return [[RESULT]] : $String
func defarg1(i: Int = 17, d: Double, s: String = "Hello") { }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments15testDefaultArg1yyF
func testDefaultArg1() {
// CHECK: [[FLOATLIT:%[0-9]+]] = float_literal $Builtin.FPIEEE{{64|80}}, {{0x4009000000000000|0x4000C800000000000000}}
// CHECK: [[FLOAT64:%[0-9]+]] = metatype $@thin Double.Type
// CHECK: [[LITFN:%[0-9]+]] = function_ref @$sSd20_builtinFloatLiteralSdBf{{[_0-9]*}}__tcfC
// CHECK: [[FLOATVAL:%[0-9]+]] = apply [[LITFN]]([[FLOATLIT]], [[FLOAT64]])
// CHECK: [[DEF0FN:%[0-9]+]] = function_ref @$s17default_arguments7defarg1{{.*}}A_
// CHECK: [[DEF0:%[0-9]+]] = apply [[DEF0FN]]()
// CHECK: [[DEF2FN:%[0-9]+]] = function_ref @$s17default_arguments7defarg1{{.*}}A1_
// CHECK: [[DEF2:%[0-9]+]] = apply [[DEF2FN]]()
// CHECK: [[FNREF:%[0-9]+]] = function_ref @$s17default_arguments7defarg1{{[_0-9a-zA-Z]*}}F
// CHECK: apply [[FNREF]]([[DEF0]], [[FLOATVAL]], [[DEF2]])
defarg1(d:3.125)
}
func defarg2(_ i: Int, d: Double = 3.125, s: String = "Hello") { }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments15testDefaultArg2{{[_0-9a-zA-Z]*}}F
func testDefaultArg2() {
// CHECK: [[INTLIT:%[0-9]+]] = integer_literal $Builtin.IntLiteral, 5
// CHECK: [[INT64:%[0-9]+]] = metatype $@thin Int.Type
// CHECK: [[LITFN:%[0-9]+]] = function_ref @$sSi22_builtinIntegerLiteralSiBI_tcfC
// CHECK: [[I:%[0-9]+]] = apply [[LITFN]]([[INTLIT]], [[INT64]]) : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK: [[DFN:%[0-9]+]] = function_ref @$s17default_arguments7defarg2{{.*}}A0_ : $@convention(thin) () -> Double
// CHECK: [[D:%[0-9]+]] = apply [[DFN]]() : $@convention(thin) () -> Double
// CHECK: [[SFN:%[0-9]+]] = function_ref @$s17default_arguments7defarg2{{.*}}A1_ : $@convention(thin) () -> @owned String
// CHECK: [[S:%[0-9]+]] = apply [[SFN]]() : $@convention(thin) () -> @owned String
// CHECK: [[FNREF:%[0-9]+]] = function_ref @$s17default_arguments7defarg2{{[_0-9a-zA-Z]*}}F : $@convention(thin) (Int, Double, @guaranteed String) -> ()
// CHECK: apply [[FNREF]]([[I]], [[D]], [[S]]) : $@convention(thin) (Int, Double, @guaranteed String) -> ()
defarg2(5)
}
func autocloseFile(x: @autoclosure () -> String = #file,
y: @autoclosure () -> Int = #line) { }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments17testAutocloseFileyyF
func testAutocloseFile() {
// CHECK-LABEL: sil private [transparent] [ossa] @$s17default_arguments17testAutocloseFileyyFSSyXEfu_ : $@convention(thin) () -> @owned String
// CHECK: string_literal utf8{{.*}}default_arguments.swift
// CHECK-LABEL: sil private [transparent] [ossa] @$s17default_arguments17testAutocloseFileyyFSiyXEfu0_ : $@convention(thin) () -> Int
// CHECK: integer_literal $Builtin.IntLiteral, [[@LINE+1]]
autocloseFile()
}
func testMagicLiterals(file: String = #file,
function: String = #function,
line: Int = #line,
column: Int = #column) {}
// Check that default argument generator functions don't leak information about
// user's source.
//
// NEGATIVE-NOT: sil hidden [ossa] @$s17default_arguments17testMagicLiteralsySS4file_SS8functionSi4lineSi6columntFfA_
//
// NEGATIVE-NOT: sil hidden [ossa] @$s17default_arguments17testMagicLiteralsySS4file_SS8functionSi4lineSi6columntFfA0_
//
// NEGATIVE-NOT: sil hidden [ossa] @$s17default_arguments17testMagicLiteralsySS4file_SS8functionSi4lineSi6columntFfA1_
//
// NEGATIVE-NOT: sil hidden [ossa] @$s17default_arguments17testMagicLiteralsySS4file_SS8functionSi4lineSi6columntFfA2_
// SR-11623
func genericMagicLiteral<T : ExpressibleByIntegerLiteral>(_ x: T = #column) -> T { x }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments23testGenericMagicLiteralyyF
func testGenericMagicLiteral() {
// CHECK: [[RET:%[0-9]+]] = alloc_stack $Int
// CHECK-NEXT: [[RAWLIT:%[0-9]+]] = integer_literal $Builtin.IntLiteral, 35
// CHECK-NEXT: [[INTTY:%[0-9]+]] = metatype $@thin Int.Type
// CHECK-NEXT: // function_ref Swift.Int.init(_builtinIntegerLiteral: Builtin.IntLiteral) -> Swift.Int
// CHECK-NEXT: [[LITFN:%[0-9]+]] = function_ref @$sSi22_builtinIntegerLiteralSiBI_tcfC
// CHECK-NEXT: [[LIT:%[0-9]+]] = apply [[LITFN]]([[RAWLIT]], [[INTTY]]) : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK-NEXT: [[LITARG:%[0-9]+]] = alloc_stack $Int
// CHECK-NEXT: store [[LIT]] to [trivial] [[LITARG]] : $*Int
// CHECK-NEXT: // function_ref default_arguments.genericMagicLiteral<A where A: Swift.ExpressibleByIntegerLiteral>(A) -> A
// CHECK-NEXT: [[FN:%[0-9]+]] = function_ref @$s17default_arguments19genericMagicLiteralyxxs020ExpressibleByIntegerE0RzlF : $@convention(thin) <τ_0_0 where τ_0_0 : ExpressibleByIntegerLiteral> (@in_guaranteed τ_0_0) -> @out τ_0_0
// CHECK-NEXT: apply [[FN]]<Int>([[RET]], [[LITARG]]) : $@convention(thin) <τ_0_0 where τ_0_0 : ExpressibleByIntegerLiteral> (@in_guaranteed τ_0_0) -> @out τ_0_0
let _: Int = genericMagicLiteral()
}
func closure(_: () -> ()) {}
func autoclosure(_: @autoclosure () -> ()) {}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments25testCallWithMagicLiteralsyyF
// CHECK: string_literal utf8 "testCallWithMagicLiterals()"
// CHECK: string_literal utf8 "testCallWithMagicLiterals()"
// CHECK-LABEL: sil private [ossa] @$s17default_arguments25testCallWithMagicLiteralsyyFyyXEfU_
// CHECK: string_literal utf8 "testCallWithMagicLiterals()"
// CHECK-LABEL: sil private [transparent] [ossa] @$s17default_arguments25testCallWithMagicLiteralsyyFyyXEfu_
// CHECK: string_literal utf8 "testCallWithMagicLiterals()"
func testCallWithMagicLiterals() {
testMagicLiterals()
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments25testPropWithMagicLiteralsSivg
// CHECK: string_literal utf8 "testPropWithMagicLiterals"
var testPropWithMagicLiterals: Int {
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
return 0
}
class Foo {
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments3FooC3int6stringACSi_SStcfc : $@convention(method) (Int, @owned String, @owned Foo) -> @owned Foo
// CHECK: string_literal utf8 "init(int:string:)"
init(int: Int, string: String = #function) {
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments3FooCfd
// CHECK: string_literal utf8 "deinit"
deinit {
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments3FooCyS2icig
// CHECK: string_literal utf8 "subscript(_:)"
subscript(x: Int) -> Int {
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
return x
}
// CHECK-LABEL: sil private [ossa] @globalinit_33_E52D764B1F2009F2390B2B8DF62DAEB8_func0
// CHECK: string_literal utf8 "Foo"
static let x = Foo(int:0)
}
// Test at top level.
testMagicLiterals()
closure { testMagicLiterals() }
autoclosure(testMagicLiterals())
// CHECK: string_literal utf8 "default_arguments"
let y : String = #function
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments16testSelectorCall_17withMagicLiteralsySi_SitF
// CHECK: string_literal utf8 "testSelectorCall(_:withMagicLiterals:)"
func testSelectorCall(_ x: Int, withMagicLiterals y: Int) {
testMagicLiterals()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments32testSelectorCallWithUnnamedPieceyySi_SitF
// CHECK: string_literal utf8 "testSelectorCallWithUnnamedPiece(_:_:)"
func testSelectorCallWithUnnamedPiece(_ x: Int, _ y: Int) {
testMagicLiterals()
}
// Test default arguments in an inherited subobject initializer
class SuperDefArg {
init(int i: Int = 10) { }
}
// CHECK: sil hidden [ossa] @$s17default_arguments11SuperDefArgC3intACSi_tcfcfA_ : $@convention(thin) () -> Int
// CHECK-NOT: sil hidden [ossa] @$s17default_arguments9SubDefArgCAC3intSi_tcfcfA_ : $@convention(thin) () -> Int
class SubDefArg : SuperDefArg { }
// CHECK: sil hidden [ossa] @$s17default_arguments13testSubDefArgAA0deF0CyF : $@convention(thin) () -> @owned SubDefArg
func testSubDefArg() -> SubDefArg {
// CHECK: function_ref @$s17default_arguments11SuperDefArgC3intACSi_tcfcfA_
// CHECK: function_ref @$s17default_arguments9SubDefArgC{{[_0-9a-zA-Z]*}}fC
// CHECK: return
return SubDefArg()
}
// CHECK-NOT: sil hidden [ossa] @$s17default_arguments9SubDefArgCACSi3int_tcfcfA_ : $@convention(thin) () -> Int
// <rdar://problem/17379550>
func takeDefaultArgUnnamed(_ x: Int = 5) { }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments25testTakeDefaultArgUnnamed{{[_0-9a-zA-Z]*}}F
func testTakeDefaultArgUnnamed(_ i: Int) {
// CHECK: bb0([[I:%[0-9]+]] : $Int):
// CHECK: [[FN:%[0-9]+]] = function_ref @$s17default_arguments21takeDefaultArgUnnamedyySiF : $@convention(thin) (Int) -> ()
// CHECK: apply [[FN]]([[I]]) : $@convention(thin) (Int) -> ()
takeDefaultArgUnnamed(i)
}
func takeDSOHandle(_ handle: UnsafeRawPointer = #dsohandle) { }
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments13testDSOHandleyyF
func testDSOHandle() {
// CHECK: [[DSO_HANDLE:%[0-9]+]] = global_addr {{@__dso_handle|@__ImageBase}} : $*Builtin.RawPointer
takeDSOHandle()
}
// Test __FUNCTION__ in an extension initializer. rdar://problem/19792181
extension SuperDefArg {
static let extensionInitializerWithClosure: Int = { return 22 }()
}
// <rdar://problem/19086357> SILGen crashes reabstracting default argument closure in members
class ReabstractDefaultArgument<T> {
init(a: (T, T) -> Bool = { _, _ in true }) {
}
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments32testDefaultArgumentReabstractionyyF
// function_ref default_arguments.ReabstractDefaultArgument.__allocating_init <A>(default_arguments.ReabstractDefaultArgument<A>.Type)(a : (A, A) -> Swift.Bool) -> default_arguments.ReabstractDefaultArgument<A>
// CHECK: [[FN:%.*]] = function_ref @$s17default_arguments25ReabstractDefaultArgument{{.*}} : $@convention(thin) <τ_0_0> () -> @owned @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0, @in_guaranteed τ_0_1) -> Bool for <τ_0_0, τ_0_0>
// CHECK-NEXT: [[RESULT:%.*]] = apply [[FN]]<Int>() : $@convention(thin) <τ_0_0> () -> @owned @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0, @in_guaranteed τ_0_1) -> Bool for <τ_0_0, τ_0_0>
// CHECK-NEXT: [[RESULT_CONV:%.*]] = convert_function [[RESULT]]
// CHECK-NEXT: function_ref reabstraction thunk helper from @escaping @callee_guaranteed (@in_guaranteed Swift.Int, @in_guaranteed Swift.Int) -> (@unowned Swift.Bool) to @escaping @callee_guaranteed (@unowned Swift.Int, @unowned Swift.Int) -> (@unowned Swift.Bool)
// CHECK-NEXT: [[THUNK:%.*]] = function_ref @$sS2iSbIegnnd_S2iSbIegyyd_TR : $@convention(thin) (Int, Int, @guaranteed @callee_guaranteed (@in_guaranteed Int, @in_guaranteed Int) -> Bool) -> Bool
// CHECK-NEXT: [[FN:%.*]] = partial_apply [callee_guaranteed] [[THUNK]]([[RESULT_CONV]]) : $@convention(thin) (Int, Int, @guaranteed @callee_guaranteed (@in_guaranteed Int, @in_guaranteed Int) -> Bool) -> Bool
// CHECK-NEXT: [[CONV_FN:%.*]] = convert_escape_to_noescape [not_guaranteed] [[FN]]
// function_ref reabstraction thunk helper from @callee_guaranteed (@unowned Swift.Int, @unowned Swift.Int) -> (@unowned Swift.Bool) to @callee_guaranteed (@in_guaranteed Swift.Int, @in_guaranteed Swift.Int) -> (@unowned Swift.Bool)
// CHECK: [[THUNK:%.*]] = function_ref @$sS2iSbIgyyd_S2iSbIegnnd_TR : $@convention(thin) (@in_guaranteed Int, @in_guaranteed Int, @noescape @callee_guaranteed (Int, Int) -> Bool) -> Bool
// CHECK-NEXT: [[FN:%.*]] = partial_apply [callee_guaranteed] [[THUNK]]([[CONV_FN]]) : $@convention(thin) (@in_guaranteed Int, @in_guaranteed Int, @noescape @callee_guaranteed (Int, Int) -> Bool) -> Bool
// CHECK-NEXT: [[CONV_FN_0:%.*]] = convert_function [[FN]]
// CHECK-NEXT: [[CONV_FN:%.*]] = convert_escape_to_noescape [not_guaranteed] [[CONV_FN_0]]
// CHECK: [[INITFN:%[0-9]+]] = function_ref @$s17default_arguments25ReabstractDefaultArgumentC{{[_0-9a-zA-Z]*}}fC
// CHECK-NEXT: apply [[INITFN]]<Int>([[CONV_FN]],
func testDefaultArgumentReabstraction() {
_ = ReabstractDefaultArgument<Int>()
}
// <rdar://problem/20494437> SILGen crash handling default arguments
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments18r20494437onSuccessyyAA25r20494437ExecutionContext_pF
// CHECK: function_ref @$s17default_arguments19r20494437onCompleteyyAA25r20494437ExecutionContext_pF
// <rdar://problem/20494437> SILGen crash handling default arguments
protocol r20494437ExecutionContext {}
let r20494437Default: r20494437ExecutionContext
func r20494437onComplete(_ executionContext: r20494437ExecutionContext = r20494437Default) {}
func r20494437onSuccess(_ a: r20494437ExecutionContext) {
r20494437onComplete(a)
}
// <rdar://problem/18400194> Parenthesized function expression crashes the compiler
func r18400194(_ a: Int, x: Int = 97) {}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments9r18400194_1xySi_SitFfA0_
// CHECK: integer_literal $Builtin.IntLiteral, 97
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments14test_r18400194yyF
// CHECK: integer_literal $Builtin.IntLiteral, 1
// CHECK: function_ref @$s17default_arguments9r18400194_1xySi_SitFfA0_ : $@convention(thin) () -> Int
// CHECK: function_ref @$s17default_arguments9r18400194_1xySi_SitF : $@convention(thin) (Int, Int) -> (){{.*}}
func test_r18400194() {
(r18400194)(1)
}
// rdar://24242783
// Don't add capture arguments to local default argument generators.
func localFunctionWithDefaultArg() {
var z = 5
func bar(_ x: Int? = nil) {
z += 1
}
bar()
}
// CHECK-LABEL: sil private [ossa] @$s17default_arguments27localFunctionWithDefaultArgyyF3barL_yySiSgFfA_
// CHECK-SAME: $@convention(thin) () -> Optional<Int>
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments15throwingDefault7closureySbyKXE_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
func throwingDefault(closure: () throws -> Bool = { return true }) throws {
try _ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments26throwingAutoclosureDefault7closureySbyKXK_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
func throwingAutoclosureDefault(closure: @autoclosure () throws -> Bool = true ) throws {
try _ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments0A3Arg7closureySbyXE_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
func defaultArg(closure: () -> Bool = { return true }) {
_ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments21autoclosureDefaultArg7closureySbyXK_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
func autoclosureDefaultArg(closure: @autoclosure () -> Bool = true ) {
_ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments23throwingDefaultEscaping7closureySbyKc_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
func throwingDefaultEscaping(closure: @escaping () throws -> Bool = { return true }) throws {
try _ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments34throwingAutoclosureDefaultEscaping7closureySbyKXA_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
func throwingAutoclosureDefaultEscaping(closure: @escaping @autoclosure () throws -> Bool = true ) throws {
try _ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments0A8Escaping7closureySbyc_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
func defaultEscaping(closure: @escaping () -> Bool = { return true }) {
_ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments26autoclosureDefaultEscaping7closureySbyXA_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool {
func autoclosureDefaultEscaping(closure: @escaping @autoclosure () -> Bool = true ) {
_ = closure()
}
// CHECK-LABEL: sil hidden [ossa] @{{.*}}callThem{{.*}} : $@convention(thin) () -> @error Error
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments15throwingDefault7closureySbyKXE_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[C:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[E:%.*]] = convert_escape_to_noescape [not_guaranteed] [[C]]
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments15throwingDefault7closureySbyKXE_tKF : $@convention(thin) (@noescape @callee_guaranteed () -> (Bool, @error Error)) -> @error Error
// CHECK: try_apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments26throwingAutoclosureDefault7closureySbyKXK_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[C:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[E:%.*]] = convert_escape_to_noescape [not_guaranteed] [[C]]
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments26throwingAutoclosureDefault7closureySbyKXK_tKF : $@convention(thin) (@noescape @callee_guaranteed () -> (Bool, @error Error)) -> @error Error
// CHECK: try_apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments0A3Arg7closureySbyXE_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[C:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[E:%.*]] = convert_escape_to_noescape [not_guaranteed] [[C]]
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments0A3Arg7closureySbyXE_tF : $@convention(thin) (@noescape @callee_guaranteed () -> Bool) -> ()
// CHECK: apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments21autoclosureDefaultArg7closureySbyXK_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Boo
// CHECK: [[C:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[E:%.*]] = convert_escape_to_noescape [not_guaranteed] [[C]]
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments21autoclosureDefaultArg7closureySbyXK_tF : $@convention(thin) (@noescape @callee_guaranteed () -> Bool) -> ()
// CHECK: apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments23throwingDefaultEscaping7closureySbyKc_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[E:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments23throwingDefaultEscaping7closureySbyKc_tKF : $@convention(thin) (@guaranteed @callee_guaranteed () -> (Bool, @error Error)) -> @error Erro
// CHECK: try_apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments34throwingAutoclosureDefaultEscaping7closureySbyKXA_tKFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[E:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> (Bool, @error Error)
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments34throwingAutoclosureDefaultEscaping7closureySbyKXA_tKF : $@convention(thin) (@guaranteed @callee_guaranteed () -> (Bool, @error Error)) -> @error Error
// CHECK: try_apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments0A8Escaping7closureySbyc_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[E:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments0A8Escaping7closureySbyc_tF : $@convention(thin) (@guaranteed @callee_guaranteed () -> Bool) -> ()
// CHECK: apply [[R]]([[E]])
// CHECK: [[F:%.*]] = function_ref @$s17default_arguments26autoclosureDefaultEscaping7closureySbyXA_tFfA_ : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[E:%.*]] = apply [[F]]() : $@convention(thin) () -> @owned @callee_guaranteed () -> Bool
// CHECK: [[R:%.*]] = function_ref @$s17default_arguments26autoclosureDefaultEscaping7closureySbyXA_tF : $@convention(thin) (@guaranteed @callee_guaranteed () -> Bool) -> ()
// CHECK: apply [[R]]([[E]])
func callThem() throws {
try throwingDefault()
try throwingAutoclosureDefault()
defaultArg()
autoclosureDefaultArg()
try throwingDefaultEscaping()
try throwingAutoclosureDefaultEscaping()
defaultEscaping()
autoclosureDefaultEscaping()
}
func tupleDefaultArg(x: (Int, Int) = (1, 2)) {}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments19callTupleDefaultArgyyF : $@convention(thin) () -> ()
// CHECK: function_ref @$s17default_arguments15tupleDefaultArg1xySi_Sit_tFfA_ : $@convention(thin) () -> (Int, Int)
// CHECK: function_ref @$s17default_arguments15tupleDefaultArg1xySi_Sit_tF : $@convention(thin) (Int, Int) -> ()
// CHECK: return
func callTupleDefaultArg() {
tupleDefaultArg()
}
// FIXME: Should this be banned?
func stupidGames(x: Int = 3) -> Int {
return x
}
stupidGames(x:)()
func genericMagic<T : ExpressibleByStringLiteral>(x: T = #file) -> T {
return x
}
let _: String = genericMagic()
// SR-11778
struct CallableWithDefault {
func callAsFunction(x: Int = 4) {}
func callAsFunction(y: Int, z: String = #function) {}
}
// CHECK-LABEL: sil hidden [ossa] @$s17default_arguments23testCallableWithDefaultyyAA0deF0VF : $@convention(thin) (CallableWithDefault) -> ()
func testCallableWithDefault(_ x: CallableWithDefault) {
// CHECK: [[DEF_FN:%[0-9]+]] = function_ref @$s17default_arguments19CallableWithDefaultV14callAsFunction1xySi_tFfA_ : $@convention(thin) () -> Int
// CHECK: [[DEF:%[0-9]+]] = apply [[DEF_FN]]() : $@convention(thin) () -> Int
// CHECK: [[CALL_AS_FN:%[0-9]+]] = function_ref @$s17default_arguments19CallableWithDefaultV14callAsFunction1xySi_tF : $@convention(method) (Int, CallableWithDefault) -> ()
// CHECK: apply [[CALL_AS_FN]]([[DEF]], {{%[0-9]+}})
x()
// CHECK: [[RAW_I:%[0-9]+]] = integer_literal $Builtin.IntLiteral, 5
// CHECK: [[I:%[0-9]+]] = apply {{%[0-9]+}}([[RAW_I]], {{%[0-9]+}}) : $@convention(method) (Builtin.IntLiteral, @thin Int.Type) -> Int
// CHECK: [[RAW_STR:%[0-9]+]] = string_literal utf8 "testCallableWithDefault(_:)"
// CHECK: [[STR:%[0-9]+]] = apply {{%[0-9]+}}([[RAW_STR]], {{%[0-9]+}}, {{%[0-9]+}}, {{%[0-9]+}}) : $@convention(method) (Builtin.RawPointer, Builtin.Word, Builtin.Int1, @thin String.Type) -> @owned String
// CHECK: [[CALL_AS_FN:%[0-9]+]] = function_ref @$s17default_arguments19CallableWithDefaultV14callAsFunction1y1zySi_SStF : $@convention(method) (Int, @guaranteed String, CallableWithDefault) -> ()
// CHECK: apply [[CALL_AS_FN]]([[I]], [[STR]], {{%[0-9]+}})
x(y: 5)
}
// FIXME: Arguably we shouldn't allow calling a constructor like this, as
// we usually require the user write an explicit '.init'.
struct WeirdUMEInitCase {
static let ty = WeirdUMEInitCase.self
init(_ x: Int = 0) {}
}
let _: WeirdUMEInitCase = .ty()
let _: WeirdUMEInitCase = .ty(5)
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