// RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s

sil_stage raw

import Swift

protocol P {}
struct F {}
struct G: P {}
struct Q: P {}

// TODO: Transform boxes by transforming their arguments, not as single-field,
// so that they work as parameters in generic SIL functions.
// CHECK-LABEL: sil [ossa] @box_type_parsing : $@convention(thin) (
sil [ossa] @box_type_parsing : $@convention(thin) (
  // CHECK: <τ_0_0> { var τ_0_0 } <F>,
  <B>{ var B }<F>,
  // CHECK: <τ_0_0 where τ_0_0 : P> { let τ_0_0 } <G>,
  <C: P>{ let C }<G>,
  // CHECK: <τ_0_0 where τ_0_0 : P> { var τ_0_0 } <Q>,
  <D: P>{ var D }<Q>,
  // CHECK: { let Int },
  { let Int },
  // CHECK: { var Int, let String },
  { var Int, let String },
  // CHECK: { },
  {},
  // CHECK: <τ_0_0, τ_0_1, τ_0_2> { var τ_0_0, let τ_0_2 } <Int, String, Optional<Double>>
  <X, Y, Z>{ var X, let Z }<Int, String, Optional<Double>>
// CHECK: ) -> ()
) -> () {
entry(%0 : @unowned $<E>{ var E }<F>, %1 : @unowned $<F: P>{ let F }<G>, %2 : @unowned $<G: P>{ var G }<Q>, %3 : @unowned ${ let Int }, %4 : @unowned ${ var Int, let String }, %5 : @unowned ${}, %6 : @unowned $<XX, YY, ZZ>{ var XX, let ZZ }<Int, String, Optional<Double>>):
  unreachable
}

// CHECK-LABEL: sil [ossa] @box_type_parsing_in_generic_function : $@convention(thin) <F, G where G : P> (
sil [ossa] @box_type_parsing_in_generic_function : $@convention(thin) <F, G: P> (
  // CHECK: <τ_0_0> { var τ_0_0 } <F>,
  <B>{ var B }<F>,
  // CHECK: <τ_0_0 where τ_0_0 : P> { let τ_0_0 } <G>,
  <C: P>{ let C }<G>,
  // CHECK: <τ_0_0 where τ_0_0 : P> { var τ_0_0 } <Q>,
  <D: P>{ var D }<Q>,
  // CHECK: { let Int },
  { let Int },
  // CHECK: { var Int, let String },
  { var Int, let String },
  // CHECK: { },
  {},
  // CHECK: <τ_0_0, τ_0_1, τ_0_2> { var τ_0_0, let τ_0_2 } <Int, String, Optional<Double>>
  <X, Y, Z>{ var X, let Z }<Int, String, Optional<Double>>
// CHECK: ) -> ()
) -> () {
entry(%0 : @unowned $<E>{ var E }<F>, %1 : @unowned $<F: P>{ let F }<G>, %2 : @unowned $<G: P>{ var G }<Q>, %3 : @unowned ${ let Int }, %4 : @unowned ${ var Int, let String }, %5 : @unowned ${}, %6 : @unowned $<XX, YY, ZZ>{ var XX, let ZZ }<Int, String, Optional<Double>>):
  unreachable
}

// CHECK-LABEL: sil [ossa] @same_generic_param_name_in_multiple_box_signatures : $@convention(thin) (
sil [ossa] @same_generic_param_name_in_multiple_box_signatures : $@convention(thin) (
  // CHECK: <τ_0_0> { var τ_0_0 } <Int>,
  <A> { var A } <Int>,
  // CHECK: <τ_0_0> { var τ_0_0 } <String>
  <A> { var A } <String>
// CHECK: ) -> ()
) -> () {
entry(%0 : @unowned $<A> { var A } <Int>, %1 : @unowned $<A> { var A } <String>):
  unreachable
}

// CHECK-LABEL: sil [ossa] @same_generic_param_name_in_outer_scope : $@convention(thin) <A> (
sil [ossa] @same_generic_param_name_in_outer_scope : $@convention(thin) <A> (
  // CHECK: <τ_0_0> { var τ_0_0 } <A>
  <A> { var A } <A>
// CHECK: ) -> ()
) -> () {
entry(%0 : @unowned $<B> { var B } <A>):
  unreachable
}

// CHECK-LABEL: sil [ossa] @box_ownership : $@convention(thin) (@owned { var Int }, @guaranteed <τ_0_0> { let τ_0_0 } <Int>) -> ()
sil [ossa] @box_ownership : $@convention(thin) (@owned { var Int }, @guaranteed <T> { let T } <Int>) -> () {
entry(%0 : @owned ${ var Int }, %1 : @guaranteed $<T> { let T } <Int>):
  unreachable
}

// CHECK-LABEL: sil [ossa] @address_of_box
sil [ossa] @address_of_box : $@convention(thin) (@in { var Int }, @in <T> { let T } <Int>) -> () {
// CHECK: %0 : $*{ var Int }, %1 : $*<τ_0_0> { let τ_0_0 } <Int>
entry(%0 : $*{ var Int }, %1 : $*<T> { let T } <Int>):
  unreachable
}