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swift-mirror/test/SILOptimizer/specialize_checked_cast_branch.swift
Nate Chandler e5d87f75a8 [SIL] Add source formal type to checked_cast_br. 
It is necessary for opaque values where for casts that will newly start
out as checked_cast_brs and be lowered to checked_cast_addr_brs, since
the latter has the source formal type, IRGen relies on being able to
access it, and there's no way in general to obtain the source formal
type from the source lowered type.
2023-07-27 15:04:15 -07:00

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// RUN: %target-swift-frontend -module-name specialize_checked_cast_branch -emit-sil -O -sil-inline-threshold 0 -Xllvm -sil-disable-pass=function-signature-opts %s -o - | %FileCheck %s
class C {}
class D : C {}
class E {}
struct NotUInt8 { var value: UInt8 }
struct NotUInt64 { var value: UInt64 }
var b = NotUInt8(value: 0)
var c = C()
var d = D()
var e = E()
var f = NotUInt64(value: 0)
var o : AnyObject = c
////////////////////////
// Arch to Arch Casts //
////////////////////////
public func ArchetypeToArchetypeCast<T1, T2>(t1 : T1, t2 : T2) -> T2 {
if let x = t1 as? T2 {
return x
}
preconditionFailure("??? Profit?")
}
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA1DCTg5 : $@convention(thin) (@guaranteed C, @guaranteed D) -> @owned D
// CHECK: bb0([[ARG:%.*]] : $C, [[ARG2:%.*]] : $D):
// CHECK: checked_cast_br C in [[ARG]] : $C to D, bb1, bb2
//
// CHECK: bb1([[T0:%.*]] : $D):
// CHECK: strong_retain [[ARG]]
// CHECK: return [[T0]]
//
// CHECK: bb2
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA1DCTg5'
_ = ArchetypeToArchetypeCast(t1: c, t2: d)
// x -> x where x is a class.
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AFTg5 : $@convention(thin) (@guaranteed C, @guaranteed C) -> @owned C {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: strong_retain %0 : $C
// CHECK: return %0 : $C
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AFTg5'
_ = ArchetypeToArchetypeCast(t1: c, t2: c)
// TODO: x -> x where x is not a class.
_ = ArchetypeToArchetypeCast(t1: b, t2: b)
// TODO: x -> y where x is not a class and y is not a class.
_ = ArchetypeToArchetypeCast(t1: b, t2: f)
// x -> y where x is not a class but y is.
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA8NotUInt8V_AA1CCTg5 : $@convention(thin) (NotUInt8, @guaranteed C) -> @owned C {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA8NotUInt8V_AA1CCTg5'
_ = ArchetypeToArchetypeCast(t1: b, t2: c)
// y -> x where x is a class but y is not.
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA8NotUInt8VTg5 : $@convention(thin) (@guaranteed C, NotUInt8) -> NotUInt8 {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA8NotUInt8VTg5'
_ = ArchetypeToArchetypeCast(t1: c, t2: b)
// y -> x where x is a super class of y.
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1DC_AA1CCTg5 : $@convention(thin) (@guaranteed D, @guaranteed C) -> @owned C {
// CHECK: [[T1:%.*]] = upcast %0 : $D to $C
// CHECK: strong_retain %0 : $D
// CHECK: return [[T1]] : $C
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1DC_AA1CCTg5'
_ = ArchetypeToArchetypeCast(t1: d, t2: c)
// x -> y where x and y are unrelated.
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA1ECTg5 : $@convention(thin) (@guaranteed C, @guaranteed E) -> @owned E {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch011ArchetypeToE4Cast2t12t2q_x_q_tr0_lFAA1CC_AA1ECTg5'
_ = ArchetypeToArchetypeCast(t1: c, t2: e)
///////////////////////////
// Archetype To Concrete //
///////////////////////////
func ArchetypeToConcreteCastUInt8<T>(t : T) -> NotUInt8 {
if let x = t as? NotUInt8 {
return x
}
preconditionFailure("??? Profit?")
}
func ArchetypeToConcreteCastC<T>(t : T) -> C {
if let x = t as? C {
return x
}
preconditionFailure("??? Profit?")
}
func ArchetypeToConcreteCastD<T>(t : T) -> D {
if let x = t as? D {
return x
}
preconditionFailure("??? Profit?")
}
func ArchetypeToConcreteCastE<T>(t : T) -> E {
if let x = t as? E {
return x
}
preconditionFailure("??? Profit?")
}
// uint8 -> uint8
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch28ArchetypeToConcreteCastUInt81tAA03NotI0Vx_tlFAE_Tg5 : $@convention(thin) (NotUInt8) -> NotUInt8 {
// CHECK: bb0([[ARG:%.*]] :
// CHECK: return [[ARG]] : $NotUInt8
// CHECK: } // end sil function '$s30specialize_checked_cast_branch28ArchetypeToConcreteCastUInt81tAA03NotI0Vx_tlFAE_Tg5'
_ = ArchetypeToConcreteCastUInt8(t: b)
// TODO: This needs FileCheck love.
_ = ArchetypeToConcreteCastUInt8(t: c)
// UInt64 -> Uint8
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch28ArchetypeToConcreteCastUInt81tAA03NotI0Vx_tlFAA0J6UInt64V_Tg5 : $@convention(thin) (NotUInt64) -> NotUInt8 {
// CHECK: bb0
// CHECK-NOT: checked_cast_br
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
_ = ArchetypeToConcreteCastUInt8(t: f)
// NotUInt8 -> C
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAA8NotUInt8V_Tg5 : $@convention(thin) (NotUInt8) -> @owned C {
// CHECK: bb0
// CHECK-NOT: checked_cast_br
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAA8NotUInt8V_Tg5'
_ = ArchetypeToConcreteCastC(t: b)
// C -> C
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAE_Tg5 : $@convention(thin) (@guaranteed C) -> @owned C {
// CHECK: bb0([[ARG:%.*]] : $C)
// CHECK: strong_retain [[ARG]]
// CHECK: return [[ARG]] : $C
// CHECK: } // end sil function '$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAE_Tg5'
_ = ArchetypeToConcreteCastC(t: c)
// D -> C
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAA1DC_Tg5 : $@convention(thin) (@guaranteed D) -> @owned C {
// CHECK: bb0([[ARG:%.*]] : $D):
// CHECK: [[CAST:%.*]] = upcast [[ARG]] : $D to $C
// CHECK: strong_retain [[ARG]]
// CHECK: return [[CAST]]
// CHECK: } // end sil function '$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAA1DC_Tg5'
_ = ArchetypeToConcreteCastC(t: d)
// E -> C
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ArchetypeToConcreteCastC1tAA1CCx_tlFAA1EC_Tg5 : $@convention(thin) (@guaranteed E) -> @owned C {
// CHECK: bb0
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
_ = ArchetypeToConcreteCastC(t: e)
// C -> D
// x -> y where x is a super class of y.
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch24ArchetypeToConcreteCastD1tAA1DCx_tlFAA1CC_Tg5 : $@convention(thin) (@guaranteed C) -> @owned D {
// CHECK: bb0([[ARG:%.*]] : $C):
// CHECK: checked_cast_br C in [[ARG]] : $C to D, [[SUCC_BB:bb[0-9]+]], [[FAIL_BB:bb[0-9]+]]
//
// CHECK: [[SUCC_BB]]([[T0:%.*]] : $D):
// CHECK: strong_retain [[ARG]]
// CHECK: return [[T0]] : $D
//
// CHECK: [[FAIL_BB]]:
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch24ArchetypeToConcreteCastD1tAA1DCx_tlFAA1CC_Tg5'
_ = ArchetypeToConcreteCastD(t: c)
// C -> E
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ArchetypeToConcreteCastE1tAA1ECx_tlFAA1CC_Tg5 : $@convention(thin) (@guaranteed C) -> @owned E {
// CHECK: bb0
// CHECK: cond_fail {{%.*}}, "precondition failure"
// CHECK: unreachable
_ = ArchetypeToConcreteCastE(t: c)
///////////////////////////
// Concrete To Archetype //
///////////////////////////
func ConcreteToArchetypeCastUInt8<T>(t: NotUInt8, t2: T) -> T {
if let x = t as? T {
return x
}
preconditionFailure("??? Profit?")
}
func ConcreteToArchetypeCastC<T>(t: C, t2: T) -> T {
if let x = t as? T {
return x
}
preconditionFailure("??? Profit?")
}
func ConcreteToArchetypeCastD<T>(t: D, t2: T) -> T {
if let x = t as? T {
return x
}
preconditionFailure("??? Profit?")
}
// x -> x where x is not a class.
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch28ConcreteToArchetypeCastUInt81t2t2xAA03NotI0V_xtlFAF_Tg5 : $@convention(thin) (NotUInt8, NotUInt8) -> NotUInt8 {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: return %0 : $NotUInt8
// CHECK: } // end sil function '$s30specialize_checked_cast_branch28ConcreteToArchetypeCastUInt81t2t2xAA03NotI0V_xtlFAF_Tg5'
_ = ConcreteToArchetypeCastUInt8(t: b, t2: b)
// x -> y where x,y are not classes and x is a different type from y.
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch28ConcreteToArchetypeCastUInt81t2t2xAA03NotI0V_xtlFAA0K6UInt64V_Tg5 : $@convention(thin) (NotUInt8, NotUInt64) -> NotUInt64 {
// CHECK: bb0
// CHECK-NOT: bb1
// CHECK: unreachable
// CHECK: } // end sil function '$s30specialize_checked_cast_branch28ConcreteToArchetypeCastUInt81t2t2xAA03NotI0V_xtlFAA0K6UInt64V_Tg5
_ = ConcreteToArchetypeCastUInt8(t: b, t2: f)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch28ConcreteToArchetypeCastUInt81t2t2xAA03NotI0V_xtlFAA1CC_Tg5 : $@convention(thin) (NotUInt8, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: unreachable
_ = ConcreteToArchetypeCastUInt8(t: b, t2: c)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ConcreteToArchetypeCastC1t2t2xAA1CC_xtlFAF_Tg5 : $@convention(thin) (@guaranteed C, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: return %0
_ = ConcreteToArchetypeCastC(t: c, t2: c)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ConcreteToArchetypeCastC1t2t2xAA1CC_xtlFAA8NotUInt8V_Tg5 : $@convention(thin) (@guaranteed C, NotUInt8) -> NotUInt8
// CHECK: bb0
// CHECK: unreachable
_ = ConcreteToArchetypeCastC(t: c, t2: b)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ConcreteToArchetypeCastC1t2t2xAA1CC_xtlFAA1DC_Tg5 : $@convention(thin) (@guaranteed C, @guaranteed D) -> @owned D
// CHECK: bb0
// CHECK: checked_cast_br C in %0 : $C to D
// CHECK: bb1
_ = ConcreteToArchetypeCastC(t: c, t2: d)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ConcreteToArchetypeCastC1t2t2xAA1CC_xtlFAA1EC_Tg5 : $@convention(thin) (@guaranteed C, @guaranteed E) -> @owned E
// CHECK: bb0
// CHECK: unreachable
_ = ConcreteToArchetypeCastC(t: c, t2: e)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch24ConcreteToArchetypeCastD1t2t2xAA1DC_xtlFAA1CC_Tg5 : $@convention(thin) (@guaranteed D, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: [[T0:%.*]] = upcast %0 : $D to $C
// CHECK: return [[T0]]
_ = ConcreteToArchetypeCastD(t: d, t2: c)
////////////////////////
// Super To Archetype //
////////////////////////
func SuperToArchetypeCastC<T>(c : C, t : T) -> T {
if let x = c as? T {
return x
}
preconditionFailure("??? Profit?")
}
func SuperToArchetypeCastD<T>(d : D, t : T) -> T {
if let x = d as? T {
return x
}
preconditionFailure("??? Profit?")
}
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch21SuperToArchetypeCastC1c1txAA1CC_xtlFAF_Tg5 : $@convention(thin) (@guaranteed C, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: return %0 : $C
_ = SuperToArchetypeCastC(c: c, t: c)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch21SuperToArchetypeCastC1c1txAA1CC_xtlFAA1DC_Tg5 : $@convention(thin) (@guaranteed C, @guaranteed D) -> @owned D
// CHECK: bb0
// CHECK: checked_cast_br C in %0 : $C to D
// CHECK: bb1
_ = SuperToArchetypeCastC(c: c, t: d)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch21SuperToArchetypeCastC1c1txAA1CC_xtlFAA8NotUInt8V_Tg5 : $@convention(thin) (@guaranteed C, NotUInt8) -> NotUInt8
// CHECK: bb0
// CHECK: unreachable
_ = SuperToArchetypeCastC(c: c, t: b)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch21SuperToArchetypeCastD1d1txAA1DC_xtlFAA1CC_Tg5 : $@convention(thin) (@guaranteed D, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: [[T0:%.*]] = upcast %0 : $D to $C
// CHECK: return [[T0]]
_ = SuperToArchetypeCastD(d: d, t: c)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch21SuperToArchetypeCastD1d1txAA1DC_xtlFAF_Tg5 : $@convention(thin) (@guaranteed D, @guaranteed D) -> @owned D
// CHECK: bb0
// CHECK: return %0 : $D
_ = SuperToArchetypeCastD(d: d, t: d)
//////////////////////////////
// Existential To Archetype //
//////////////////////////////
func ExistentialToArchetypeCast<T>(o : AnyObject, t : T) -> T {
if let x = o as? T {
return x
}
preconditionFailure("??? Profit?")
}
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch26ExistentialToArchetypeCast1o1txyXl_xtlFAA1CC_Tg5 : $@convention(thin) (@guaranteed AnyObject, @guaranteed C) -> @owned C
// CHECK: bb0
// CHECK: checked_cast_br AnyObject in %0 : $AnyObject to C
// CHECK: bb1
_ = ExistentialToArchetypeCast(o: o, t: c)
// CHECK-LABEL: sil shared @$s30specialize_checked_cast_branch26ExistentialToArchetypeCast1o1txyXl_xtlFAA8NotUInt8V_Tg5 : $@convention(thin) (@guaranteed AnyObject, NotUInt8) -> NotUInt8
// CHECK: bb0
// CHECK: checked_cast_addr_br take_always AnyObject in {{%.*}} : $*AnyObject to NotUInt8 in {{%.*}} : $*NotUInt8,
// CHECK: bb1
_ = ExistentialToArchetypeCast(o: o, t: b)
// CHECK-LABEL: sil shared {{.*}}@$s30specialize_checked_cast_branch26ExistentialToArchetypeCast1o1txyXl_xtlFyXl_Tg5 : $@convention(thin) (@guaranteed AnyObject, @guaranteed AnyObject) -> @owned AnyObject
// CHECK: bb0
// CHECK-NOT: checked_cast_br %
// CHECK: return %0 : $AnyObject
// CHECK-NOT: checked_cast_br %
// CHECK: } // end sil function '$s30specialize_checked_cast_branch26ExistentialToArchetypeCast1o1txyXl_xtlFyXl_Tg5'
_ = ExistentialToArchetypeCast(o: o, t: o)
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