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carbon-lang/toolchain/check/testdata/if_expr/basic.carbon
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Christopher Di Bella 05a7ecbd34 Move SubobjectDestroy and SelfDestruct out of interface Destroy (#7942) 
Determining that a type has trivial destruction requires checking
whether all of its subobjects have trivial destruction and whether its
type has a custom witness for `Destroy.Op`. This isn't possible when
`Destroy` is the custodian for `Destroy.Op` and `SubobjectDestroy.Op`,
so we need to make `SubobjectDestroy` its own interface.

`Destroy.SelfDestruct` becomes a standalone function because it depends
on `SubobjectDestroy` and `Destroy` being implemented, and is also
responsible for generating any custom witnesses for both interfaces.
Making `SelfDestruct` an interface was experimented with, but this
required a blanket impl that caused issues for facet types.

`Destroy` depends on `SubobjectDestroy` to be implemented. We'd ideally
use `require impls SubobjectDestroy`, but it isn't complete yet, and it
also causes problems when `Destroy` is implemented inside the class
definition. We work around this by temporarily renaming the `Destroy`
interface to `DestroyImpl`, and introducing a constraint called
`Destroy` so that user code doesn't need to write `Core.SubobjectDestroy
& Core.Destroy`.
2026-10-26 21:35:01 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/primitives.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/if_expr/basic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/if_expr/basic.carbon
fn F(b: bool, n: i32, m: i32) -> i32 {
var x: array(i32, 1) = (0,);
return if b then x[m] else x[n];
}
// CHECK:STDOUT: --- basic.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %pattern_type.831: type = pattern_type bool [concrete]
// CHECK:STDOUT: %b.param_patt: %pattern_type.831 = value_param_pattern [concrete]
// CHECK:STDOUT: %b.patt: %pattern_type.831 = wrapper_binding_pattern b, %b.param_patt [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = parameterized_class_name_type @Int [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %N.fe9: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.d94: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %n.param_patt: %pattern_type.d94 = value_param_pattern [concrete]
// CHECK:STDOUT: %n.patt: %pattern_type.d94 = wrapper_binding_pattern n, %n.param_patt [concrete]
// CHECK:STDOUT: %m.param_patt: %pattern_type.d94 = value_param_pattern [concrete]
// CHECK:STDOUT: %m.patt: %pattern_type.d94 = wrapper_binding_pattern m, %m.param_patt [concrete]
// CHECK:STDOUT: %.0b3: Core.Form = init_form %i32 [concrete]
// CHECK:STDOUT: %return.param_patt.299: %pattern_type.d94 = out_param_pattern [concrete]
// CHECK:STDOUT: %return.patt.6fa: %pattern_type.d94 = return_slot_pattern %return.param_patt.299, %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %Array.type: type = parameterized_class_name_type @Array [concrete]
// CHECK:STDOUT: %Array.generic: %Array.type = struct_value () [concrete]
// CHECK:STDOUT: %Array.00c: type = class_type @Array, @Array(%i32, %int_1) [concrete]
// CHECK:STDOUT: %pattern_type.dc1: type = pattern_type %Array.00c [concrete]
// CHECK:STDOUT: %x.patt: %pattern_type.dc1 = ref_binding_pattern x [concrete]
// CHECK:STDOUT: %x.var_patt: %pattern_type.dc1 = var_pattern %x.patt [concrete]
// CHECK:STDOUT: %int_0.5c6: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %tuple.type.985: type = tuple_type (Core.IntLiteral) [concrete]
// CHECK:STDOUT: %tuple.4f2: %tuple.type.985 = tuple_value (%int_0.5c6) [concrete]
// CHECK:STDOUT: %ImplicitAs.type.0ff: type = generic_interface_type @ImplicitAs [concrete]
// CHECK:STDOUT: %ImplicitAs.generic: %ImplicitAs.type.0ff = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.type.6b0: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.3c6: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.6f2: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.3c6 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.d73: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.f53, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.f60: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.766 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.6b0 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.d73) [concrete]
// CHECK:STDOUT: %ImplicitAs.WithSelf.Convert.type.58f: type = fn_type @ImplicitAs.WithSelf.Convert, @ImplicitAs.WithSelf(%i32, %ImplicitAs.facet) [concrete]
// CHECK:STDOUT: %.33a: type = fn_type_with_self_type %ImplicitAs.WithSelf.Convert.type.58f, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.f60 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.f60, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_0.753: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %array: %Array.00c = tuple_value (%int_0.753) [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.a1d: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N.fe9) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.3c1: %Int.as.Copy.impl.Op.type.a1d = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.8af: <witness> = impl_witness imports.%Copy.impl_witness_table.f44, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.648: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.cae: %Int.as.Copy.impl.Op.type.648 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %i32, (%Copy.impl_witness.8af) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.f76: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet) [concrete]
// CHECK:STDOUT: %.2b9: type = fn_type_with_self_type %Copy.WithSelf.Op.type.f76, %Copy.facet [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.cae, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: %SelfDestruct.type: type = fn_type @SelfDestruct [concrete]
// CHECK:STDOUT: %SelfDestruct: %SelfDestruct.type = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %SubobjectDestroy.type: type = facet_type <@SubobjectDestroy> [concrete]
// CHECK:STDOUT: %T.09f: %SubobjectDestroy.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %T.as_type.as.DestroyImpl.impl.Op.type.dea: type = fn_type @T.as_type.as.DestroyImpl.impl.Op, @T.as_type.as.DestroyImpl.impl(%T.09f) [symbolic]
// CHECK:STDOUT: %T.as_type.as.DestroyImpl.impl.Op.6e5: %T.as_type.as.DestroyImpl.impl.Op.type.dea = struct_value () [symbolic]
// CHECK:STDOUT: %SubobjectDestroy.WithSelf.Op.type.6870fd.1: type = fn_type @SubobjectDestroy.WithSelf.Op.loc16_3.1 [concrete]
// CHECK:STDOUT: %SubobjectDestroy.WithSelf.Op.30f1ee.1: %SubobjectDestroy.WithSelf.Op.type.6870fd.1 = struct_value () [concrete]
// CHECK:STDOUT: %custom_witness.b80ef6.1: <witness> = custom_witness (%SubobjectDestroy.WithSelf.Op.30f1ee.1), @SubobjectDestroy [concrete]
// CHECK:STDOUT: %SubobjectDestroy.WithSelf.Op.type.6870fd.2: type = fn_type @SubobjectDestroy.WithSelf.Op.loc16_3.2 [concrete]
// CHECK:STDOUT: %SubobjectDestroy.WithSelf.Op.30f1ee.2: %SubobjectDestroy.WithSelf.Op.type.6870fd.2 = struct_value () [concrete]
// CHECK:STDOUT: %SubobjectDestroy.facet.49a: %SubobjectDestroy.type = facet_value %i32, (%custom_witness.b80ef6.1) [concrete]
// CHECK:STDOUT: %DestroyImpl.impl_witness.077: <witness> = impl_witness imports.%DestroyImpl.impl_witness_table, @T.as_type.as.DestroyImpl.impl(%SubobjectDestroy.facet.49a) [concrete]
// CHECK:STDOUT: %Destroy.facet.c2b: %Destroy.type = facet_value %i32, (%DestroyImpl.impl_witness.077, %custom_witness.b80ef6.1) [concrete]
// CHECK:STDOUT: %SelfDestruct.specific_fn.845: <specific function> = specific_function %SelfDestruct, @SelfDestruct(%Destroy.facet.c2b) [concrete]
// CHECK:STDOUT: %custom_witness.b80ef6.2: <witness> = custom_witness (%SubobjectDestroy.WithSelf.Op.30f1ee.2), @SubobjectDestroy [concrete]
// CHECK:STDOUT: %SubobjectDestroy.facet.b33: %SubobjectDestroy.type = facet_value %Array.00c, (%custom_witness.b80ef6.2) [concrete]
// CHECK:STDOUT: %DestroyImpl.impl_witness.d75: <witness> = impl_witness imports.%DestroyImpl.impl_witness_table, @T.as_type.as.DestroyImpl.impl(%SubobjectDestroy.facet.b33) [concrete]
// CHECK:STDOUT: %Destroy.facet.2f1: %Destroy.type = facet_value %Array.00c, (%DestroyImpl.impl_witness.d75, %custom_witness.b80ef6.2) [concrete]
// CHECK:STDOUT: %SelfDestruct.specific_fn.408: <specific function> = specific_function %SelfDestruct, @SelfDestruct(%Destroy.facet.2f1) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Bool = %Core.Bool
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .Array = %Core.Array
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: .Copy = %Core.Copy
// CHECK:STDOUT: .SelfDestruct = %Core.SelfDestruct
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Bool: type = import_ref Core//prelude/parts/bool, Bool, loaded [concrete = bool]
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.Array: %Array.type = import_ref Core//prelude/parts/array, Array, loaded [concrete = constants.%Array.generic]
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.0ff = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.e47: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.3c6) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.6f2)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.f53 = impl_witness_table (%Core.import_ref.e47), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.72f: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.a1d) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Int.as.Copy.impl.%Int.as.Copy.impl.Op (constants.%Int.as.Copy.impl.Op.3c1)]
// CHECK:STDOUT: %Copy.impl_witness_table.f44 = impl_witness_table (%Core.import_ref.72f), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: %Core.SelfDestruct: %SelfDestruct.type = import_ref Core//prelude/parts/destroy, SelfDestruct, loaded [concrete = constants.%SelfDestruct]
// CHECK:STDOUT: %Core.import_ref.74d: @T.as_type.as.DestroyImpl.impl.%T.as_type.as.DestroyImpl.impl.Op.type (%T.as_type.as.DestroyImpl.impl.Op.type.dea) = import_ref Core//prelude/parts/destroy, loc{{\d+_\d+}}, loaded [symbolic = @T.as_type.as.DestroyImpl.impl.%T.as_type.as.DestroyImpl.impl.Op (constants.%T.as_type.as.DestroyImpl.impl.Op.6e5)]
// CHECK:STDOUT: %DestroyImpl.impl_witness_table = impl_witness_table (%Core.import_ref.74d), @T.as_type.as.DestroyImpl.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %b.param_patt: %pattern_type.831 = value_param_pattern [concrete = constants.%b.param_patt]
// CHECK:STDOUT: %b.patt: %pattern_type.831 = wrapper_binding_pattern b, %b.param_patt [concrete = constants.%b.patt]
// CHECK:STDOUT: %n.param_patt: %pattern_type.d94 = value_param_pattern [concrete = constants.%n.param_patt]
// CHECK:STDOUT: %n.patt: %pattern_type.d94 = wrapper_binding_pattern n, %n.param_patt [concrete = constants.%n.patt]
// CHECK:STDOUT: %m.param_patt: %pattern_type.d94 = value_param_pattern [concrete = constants.%m.param_patt]
// CHECK:STDOUT: %m.patt: %pattern_type.d94 = wrapper_binding_pattern m, %m.param_patt [concrete = constants.%m.patt]
// CHECK:STDOUT: %return.param_patt: %pattern_type.d94 = out_param_pattern [concrete = constants.%return.param_patt.299]
// CHECK:STDOUT: %return.patt: %pattern_type.d94 = return_slot_pattern %return.param_patt, %i32.loc15_34 [concrete = constants.%return.patt.6fa]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc15_34: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc15_34: Core.Form = init_form %i32.loc15_34 [concrete = constants.%.0b3]
// CHECK:STDOUT: %b.param: bool = value_param call_param0
// CHECK:STDOUT: %.loc15_9: type = type_literal bool [concrete = bool]
// CHECK:STDOUT: %b: bool = wrapper_binding b, %b.param
// CHECK:STDOUT: %n.param: %i32 = value_param call_param1
// CHECK:STDOUT: %i32.loc15_18: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %n: %i32 = wrapper_binding n, %n.param
// CHECK:STDOUT: %m.param: %i32 = value_param call_param2
// CHECK:STDOUT: %i32.loc15_26: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %m: %i32 = wrapper_binding m, %m.param
// CHECK:STDOUT: %return.param: ref %i32 = out_param call_param3
// CHECK:STDOUT: %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%b.param: bool, %n.param: %i32, %m.param: %i32) -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %x.var: ref %Array.00c = var_storage %x.var_patt
// CHECK:STDOUT: %int_0.loc16_27: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %.loc16_29.1: %tuple.type.985 = tuple_literal (%int_0.loc16_27) [concrete = constants.%tuple.4f2]
// CHECK:STDOUT: %impl.elem0.loc16: %.33a = impl_witness_access constants.%ImplicitAs.impl_witness.d73, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.f60]
// CHECK:STDOUT: %bound_method.loc16_29.1: <bound method> = bound_method %int_0.loc16_27, %impl.elem0.loc16 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn.loc16: <specific function> = specific_function %impl.elem0.loc16, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc16_29.2: <bound method> = bound_method %int_0.loc16_27, %specific_fn.loc16 [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc16_29.2(%int_0.loc16_27) [concrete = constants.%int_0.753]
// CHECK:STDOUT: %.loc16_29.2: init %i32 = converted %int_0.loc16_27, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_0.753]
// CHECK:STDOUT: %int_0.loc16_29: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %.loc16_29.3: ref %i32 = array_index %x.var, %int_0.loc16_29
// CHECK:STDOUT: %.loc16_29.4: init %i32 to %.loc16_29.3 = in_place_init %.loc16_29.2 [concrete = constants.%int_0.753]
// CHECK:STDOUT: %.loc16_29.5: init %Array.00c to %x.var = array_init (%.loc16_29.4) [concrete = constants.%array]
// CHECK:STDOUT: %.loc16_3.1: init %Array.00c = converted %.loc16_29.1, %.loc16_29.5 [concrete = constants.%array]
// CHECK:STDOUT: assign %x.var, %.loc16_3.1
// CHECK:STDOUT: %.loc16_22: type = splice_block %Array [concrete = constants.%Array.00c] {
// CHECK:STDOUT: %i32.loc16: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %Array: type = class_type @Array, @Array(constants.%i32, constants.%int_1) [concrete = constants.%Array.00c]
// CHECK:STDOUT: }
// CHECK:STDOUT: %x: ref %Array.00c = wrapper_binding x, %x.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %x.patt: %pattern_type.dc1 = ref_binding_pattern x [concrete = constants.%x.patt]
// CHECK:STDOUT: %x.var_patt: %pattern_type.dc1 = var_pattern %x.patt [concrete = constants.%x.var_patt]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b.ref: bool = name_ref b, %b
// CHECK:STDOUT: if %b.ref br !if.expr.then else br !if.expr.else
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.then:
// CHECK:STDOUT: %x.ref.loc17_20: ref %Array.00c = name_ref x, %x
// CHECK:STDOUT: %m.ref: %i32 = name_ref m, %m
// CHECK:STDOUT: %.loc17_23.1: ref %i32 = array_index %x.ref.loc17_20, %m.ref
// CHECK:STDOUT: %.loc17_23.2: %i32 = acquire_value %.loc17_23.1
// CHECK:STDOUT: br !if.expr.result(%.loc17_23.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.else:
// CHECK:STDOUT: %x.ref.loc17_30: ref %Array.00c = name_ref x, %x
// CHECK:STDOUT: %n.ref: %i32 = name_ref n, %n
// CHECK:STDOUT: %.loc17_33.1: ref %i32 = array_index %x.ref.loc17_30, %n.ref
// CHECK:STDOUT: %.loc17_33.2: %i32 = acquire_value %.loc17_33.1
// CHECK:STDOUT: br !if.expr.result(%.loc17_33.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.result:
// CHECK:STDOUT: %.loc17_10: %i32 = block_arg !if.expr.result
// CHECK:STDOUT: %impl.elem0.loc17: %.2b9 = impl_witness_access constants.%Copy.impl_witness.8af, element0 [concrete = constants.%Int.as.Copy.impl.Op.cae]
// CHECK:STDOUT: %bound_method.loc17_10.1: <bound method> = bound_method %.loc17_10, %impl.elem0.loc17
// CHECK:STDOUT: %specific_fn.loc17: <specific function> = specific_function %impl.elem0.loc17, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc17_10.2: <bound method> = bound_method %.loc17_10, %specific_fn.loc17
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc17_10.2(%.loc17_10)
// CHECK:STDOUT: %Destroy.facet.loc16_3.1: %Destroy.type = facet_value constants.%Array.00c, (constants.%DestroyImpl.impl_witness.d75, constants.%custom_witness.b80ef6.2) [concrete = constants.%Destroy.facet.2f1]
// CHECK:STDOUT: %.loc16_3.2: %Destroy.type = converted constants.%Array.00c, %Destroy.facet.loc16_3.1 [concrete = constants.%Destroy.facet.2f1]
// CHECK:STDOUT: %Destroy.facet.loc16_3.2: %Destroy.type = facet_value constants.%Array.00c, (constants.%DestroyImpl.impl_witness.d75, constants.%custom_witness.b80ef6.2) [concrete = constants.%Destroy.facet.2f1]
// CHECK:STDOUT: %.loc16_3.3: %Destroy.type = converted constants.%Array.00c, %Destroy.facet.loc16_3.2 [concrete = constants.%Destroy.facet.2f1]
// CHECK:STDOUT: %SelfDestruct.specific_fn: <specific function> = specific_function constants.%SelfDestruct, @SelfDestruct(constants.%Destroy.facet.2f1) [concrete = constants.%SelfDestruct.specific_fn.408]
// CHECK:STDOUT: %SelfDestruct.call: init %empty_tuple.type = call %SelfDestruct.specific_fn(%x.var)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @SubobjectDestroy.WithSelf.Op.loc16_3.1(%self.param: ref %i32) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @SubobjectDestroy.WithSelf.Op.loc16_3.2(%self.param: ref %Array.00c) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %.loc16_3.1: ref %i32 = array_index %self.param, %int_0
// CHECK:STDOUT: %Destroy.facet.loc16_3.1: %Destroy.type = facet_value constants.%i32, (constants.%DestroyImpl.impl_witness.077, constants.%custom_witness.b80ef6.1) [concrete = constants.%Destroy.facet.c2b]
// CHECK:STDOUT: %.loc16_3.2: %Destroy.type = converted constants.%i32, %Destroy.facet.loc16_3.1 [concrete = constants.%Destroy.facet.c2b]
// CHECK:STDOUT: %Destroy.facet.loc16_3.2: %Destroy.type = facet_value constants.%i32, (constants.%DestroyImpl.impl_witness.077, constants.%custom_witness.b80ef6.1) [concrete = constants.%Destroy.facet.c2b]
// CHECK:STDOUT: %.loc16_3.3: %Destroy.type = converted constants.%i32, %Destroy.facet.loc16_3.2 [concrete = constants.%Destroy.facet.c2b]
// CHECK:STDOUT: %SelfDestruct.specific_fn: <specific function> = specific_function constants.%SelfDestruct, @SelfDestruct(constants.%Destroy.facet.c2b) [concrete = constants.%SelfDestruct.specific_fn.845]
// CHECK:STDOUT: %SelfDestruct.call: init %empty_tuple.type = call %SelfDestruct.specific_fn(%.loc16_3.1)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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