File: closure_specialize_opaque.sil

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// RUN: %target-sil-opt -enable-sil-opaque-values -enable-sil-verify-all -closure-specialize %s | %FileCheck %s

struct TestView {}
struct TestRange {}
struct TestSlice {}

// helper
sil @closure : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> () {
bb0(%0 : $*TestView, %1 : $TestRange, %2 : $TestSlice):
  %1284 = tuple ()
  return %1284 : $()
}

// helper
sil @thunk : $@convention(thin) (@inout TestView, @owned @callee_owned (@inout TestView) -> ()) -> @out () {
bb0(%0 : $*TestView, %1 : $@callee_owned (@inout TestView) ->()):
  %call = apply %1(%0) : $@callee_owned (@inout TestView) -> ()
  %1284 = tuple ()
  return %1284 : $()
}

// Test that ClosureSpecializer can handle captured @in args, in addition to direct args.
//
// CHECK-LABEL: sil @testSpecializeThunk : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> () {
// CHECK: bb0(%0 : $*TestView, %1 : $TestRange, %2 : $TestSlice):
// CHECK:   [[CLOSURE:%.*]] = function_ref @closure : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> ()
// CHECK:   [[SPECIALIZED:%.*]] = function_ref @$s5thunk7closure4main9TestRangeVAC0D5SliceVTf1nc_n : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> @out () // user: %6
// CHECK:   [[THUNK:%.*]] = function_ref @thunk : $@convention(thin) (@inout TestView, @owned @callee_owned (@inout TestView) -> ()) -> @out ()
// CHECK:   [[CALL:%.*]] = apply [[SPECIALIZED]](%0, %1, %2) : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> @out ()
// CHECK:   %{{.*}} = tuple ()
// CHECK:   return %{{.*}} : $()
// CHECK-LABEL: } // end sil function 'testSpecializeThunk'
sil @testSpecializeThunk : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> () {
bb0(%0 : $*TestView, %1 : $TestRange, %2 : $TestSlice):
  %closurefn = function_ref @closure : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> ()
  %pa = partial_apply %closurefn(%1, %2) : $@convention(thin) (@inout TestView, TestRange, @in TestSlice) -> ()
  %thunk = function_ref @thunk : $@convention(thin) (@inout TestView, @owned @callee_owned (@inout TestView) -> ()) -> @out ()
  strong_retain %pa : $@callee_owned (@inout TestView) -> ()
  %call = apply %thunk(%0, %pa) : $@convention(thin) (@inout TestView, @owned @callee_owned (@inout TestView) -> ()) -> @out ()
  %1284 = tuple ()
  return %1284 : $()
}