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7871237c1503a7668483a1dd9d2b82f2c598063f
carbon-lang/toolchain/check/testdata/class/inheritance/import_base.carbon
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Chandler Carruthandjosh11b 7871237c15 Move self to the explicit () parameter list (proposal #7016) (#7272) 
Implements proposal #7016: `self` moves from the deduced implicit list
(`fn F[self: Self]()`) to the front of the explicit list. Its type may
be written explicitly (`fn F(self: Self)`) or omitted, in which case it
defaults to `Self` (`fn F(self)`, `fn F(ref self)`); `self` in the
implicit list is rejected.

Throughout checking, `self` is modeled as the first explicit parameter.
Because a method is just a function whose first parameter is `self`, it
can also be called as an ordinary function with the receiver passed
explicitly (`Type.M(obj, ...)`), not only as `obj.M(...)`. A new
`SemIR::CallArgParamPatterns` helper chooses the parameters matched
against the explicit arguments, excluding a leading `self` only when it
is supplied as a method-call receiver; arity checking, conversion, and
generic deduction use it. The resulting SemIR and lowering are
unchanged: `self` is still `call_param0`, and witnesses, thunks, and
vtables are unaffected.

An omitted `self` type is parsed as a `SelfBindingPattern` node with no
type expression; checking synthesizes the `Self` type so it behaves
exactly like `self: Self`. However, the exact spelling used must match
between a forward declaration and a definition, following #3763's rules
around declaration matching.

Generated functions, thunks, and C++ interop import/export build `self`
as the first explicit parameter, and the `self`-type override (e.g.
Derived->Base for a virtual override) applies to the explicit `self`.
Placement is validated by new diagnostics: `SelfInImplicitParamList`,
`SelfNotFirstParam`, and `SelfOutsideParamList`. The benchmark source
generator and the documentation adopt the `(self)` shorthand; the
prelude, the examples, and the test data are migrated in the following
commits.

Assisted-by: Claude Code with Claude Opus 4.7

---------

Co-authored-by: josh11b <15258583+josh11b@users.noreply.github.com>
2026-06-10 15:30:43 +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/int.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/class/inheritance/import_base.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/inheritance/import_base.carbon
// --- a.carbon
library "[[@TEST_NAME]]";
base class Base {
fn F(self);
fn Unused(self);
var x: i32;
var unused_y: i32;
}
class Child {
extend base: Base;
}
// --- b.carbon
library "[[@TEST_NAME]]";
import library "a";
fn Run() {
var a: Child = {.base = {.x = 0, .unused_y = 1}};
a.x = 2;
a.F();
}
// CHECK:STDOUT: --- a.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Base: type = class_type @Base [concrete]
// CHECK:STDOUT: %pattern_type.912: type = pattern_type %Base [concrete]
// CHECK:STDOUT: %Base.F.type: type = fn_type @Base.F [concrete]
// CHECK:STDOUT: %Base.F: %Base.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Base.Unused.type: type = fn_type @Base.Unused [concrete]
// CHECK:STDOUT: %Base.Unused: %Base.Unused.type = struct_value () [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %Base.elem: type = unbound_element_type %Base, %i32 [concrete]
// CHECK:STDOUT: %struct_type.x.unused_y: type = struct_type {.x: %i32, .unused_y: %i32} [concrete]
// CHECK:STDOUT: %complete_type.6c3: <witness> = complete_type_witness %struct_type.x.unused_y [concrete]
// CHECK:STDOUT: %Child: type = class_type @Child [concrete]
// CHECK:STDOUT: %Child.elem: type = unbound_element_type %Child, %Base [concrete]
// CHECK:STDOUT: %struct_type.base: type = struct_type {.base: %Base} [concrete]
// CHECK:STDOUT: %complete_type.c02: <witness> = complete_type_witness %struct_type.base [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Base = %Base.decl
// CHECK:STDOUT: .Child = %Child.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Base.decl: type = class_decl @Base [concrete = constants.%Base] {} {}
// CHECK:STDOUT: %Child.decl: type = class_decl @Child [concrete = constants.%Child] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Base {
// CHECK:STDOUT: %Base.F.decl: %Base.F.type = fn_decl @Base.F [concrete = constants.%Base.F] {
// CHECK:STDOUT: %self.param_patt: %pattern_type.912 = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: %pattern_type.912 = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: %Base = value_param call_param0
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%Base [concrete = constants.%Base]
// CHECK:STDOUT: %self: %Base = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Base.Unused.decl: %Base.Unused.type = fn_decl @Base.Unused [concrete = constants.%Base.Unused] {
// CHECK:STDOUT: %self.param_patt: %pattern_type.912 = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt: %pattern_type.912 = at_binding_pattern self, %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: %Base = value_param call_param0
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%Base [concrete = constants.%Base]
// CHECK:STDOUT: %self: %Base = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc8: %Base.elem = field_decl x, element0 [concrete]
// CHECK:STDOUT: %.loc9: %Base.elem = field_decl unused_y, element1 [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%struct_type.x.unused_y [concrete = constants.%complete_type.6c3]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Base
// CHECK:STDOUT: .F = %Base.F.decl
// CHECK:STDOUT: .Unused = %Base.Unused.decl
// CHECK:STDOUT: .x = %.loc8
// CHECK:STDOUT: .unused_y = %.loc9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Child {
// CHECK:STDOUT: %Base.ref: type = name_ref Base, file.%Base.decl [concrete = constants.%Base]
// CHECK:STDOUT: %.loc13: %Child.elem = base_decl %Base.ref, element0 [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%struct_type.base [concrete = constants.%complete_type.c02]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Child
// CHECK:STDOUT: .Base = <poisoned>
// CHECK:STDOUT: .base = %.loc13
// CHECK:STDOUT: extend %Base.ref
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Base.F(%self.param: %Base);
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Base.Unused(%self.param: %Base);
// CHECK:STDOUT:
// CHECK:STDOUT: --- b.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Run.type: type = fn_type @Run [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Run: %Run.type = struct_value () [concrete]
// CHECK:STDOUT: %Child: type = class_type @Child [concrete]
// CHECK:STDOUT: %Base: type = class_type @Base [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %i32.builtin: type = int_type signed, %int_32 [concrete]
// CHECK:STDOUT: %struct_type.x.unused_y.258: type = struct_type {.x: %i32, .unused_y: %i32} [concrete]
// CHECK:STDOUT: %complete_type.6c3: <witness> = complete_type_witness %struct_type.x.unused_y.258 [concrete]
// CHECK:STDOUT: %struct_type.base.cae: type = struct_type {.base: %Base} [concrete]
// CHECK:STDOUT: %complete_type.c02: <witness> = complete_type_witness %struct_type.base.cae [concrete]
// CHECK:STDOUT: %pattern_type.860: type = pattern_type %Child [concrete]
// CHECK:STDOUT: %int_0.5c6: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %struct_type.x.unused_y.76a: type = struct_type {.x: Core.IntLiteral, .unused_y: Core.IntLiteral} [concrete]
// CHECK:STDOUT: %struct.0bf: %struct_type.x.unused_y.76a = struct_value (%int_0.5c6, %int_1.5b8) [concrete]
// CHECK:STDOUT: %struct_type.base.503: type = struct_type {.base: %struct_type.x.unused_y.76a} [concrete]
// CHECK:STDOUT: %struct.cb5: %struct_type.base.503 = struct_value (%struct.0bf) [concrete]
// CHECK:STDOUT: %.edf: type = partial_type %Base [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.914: 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.e74: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.845: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.e74 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.a23: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.b3c, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.2ba: 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.e39: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.2ba = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.914 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.a23) [concrete]
// CHECK:STDOUT: %ImplicitAs.WithSelf.Convert.type.740: type = fn_type @ImplicitAs.WithSelf.Convert, @ImplicitAs.WithSelf(%i32, %ImplicitAs.facet) [concrete]
// CHECK:STDOUT: %.1c5: type = fn_type_with_self_type %ImplicitAs.WithSelf.Convert.type.740, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.7b4: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.e39 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.e39, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method.6e0: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_0.3c0: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.094: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.e39 [concrete]
// CHECK:STDOUT: %bound_method.953: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.0c6: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %struct.c25: %.edf = struct_value (%int_0.3c0, %int_1.0c6) [concrete]
// CHECK:STDOUT: %Base.val: %Base = struct_value (%int_0.3c0, %int_1.0c6) [concrete]
// CHECK:STDOUT: %Child.val: %Child = struct_value (%Base.val) [concrete]
// CHECK:STDOUT: %Base.elem: type = unbound_element_type %Base, %i32 [concrete]
// CHECK:STDOUT: %int_2.ecc: Core.IntLiteral = int_value 2 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.9f3: <bound method> = bound_method %int_2.ecc, %Core.IntLiteral.as.ImplicitAs.impl.Convert.e39 [concrete]
// CHECK:STDOUT: %bound_method.3cb: <bound method> = bound_method %int_2.ecc, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_2.295: %i32 = int_value 2 [concrete]
// CHECK:STDOUT: %Base.F.type: type = fn_type @Base.F [concrete]
// CHECK:STDOUT: %Base.F: %Base.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %Destroy.Op.type.1d8f74.6: type = fn_type @Destroy.Op.loc7_3.6 [concrete]
// CHECK:STDOUT: %Destroy.Op.1a2547.6: %Destroy.Op.type.1d8f74.6 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.Base = import_ref Main//a, Base, unloaded
// CHECK:STDOUT: %Main.Child: type = import_ref Main//a, Child, loaded [concrete = constants.%Child]
// CHECK:STDOUT: %Core.048aa3.1: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Main.import_ref.6fc: <witness> = import_ref Main//a, loc10_1, loaded [concrete = constants.%complete_type.6c3]
// CHECK:STDOUT: %Main.import_ref.d68 = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
// CHECK:STDOUT: %Main.import_ref.bc9: %Base.F.type = import_ref Main//a, loc5_13, loaded [concrete = constants.%Base.F]
// CHECK:STDOUT: %Main.import_ref.077 = import_ref Main//a, loc6_18, unloaded
// CHECK:STDOUT: %Main.import_ref.230: %Base.elem = import_ref Main//a, loc8_8, loaded [concrete = %.11f]
// CHECK:STDOUT: %Main.import_ref.9f4 = import_ref Main//a, loc9_15, unloaded
// CHECK:STDOUT: %Main.import_ref.60e: <witness> = import_ref Main//a, loc14_1, loaded [concrete = constants.%complete_type.c02]
// CHECK:STDOUT: %Main.import_ref.6e8 = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
// CHECK:STDOUT: %Main.import_ref.bd6 = import_ref Main//a, loc13_20, unloaded
// CHECK:STDOUT: %Main.import_ref.439419.2: type = import_ref Main//a, loc13_16, loaded [concrete = constants.%Base]
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.0ff = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.edf: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.e74) = 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.845)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.b3c = impl_witness_table (%Core.import_ref.edf), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: %.11f: %Base.elem = field_decl x, element0 [concrete]
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Base = imports.%Main.Base
// CHECK:STDOUT: .Child = imports.%Main.Child
// CHECK:STDOUT: .Core = imports.%Core.048aa3.1
// CHECK:STDOUT: .Run = %Run.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %Run.decl: %Run.type = fn_decl @Run [concrete = constants.%Run] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Child [from "a.carbon"] {
// CHECK:STDOUT: complete_type_witness = imports.%Main.import_ref.60e
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = imports.%Main.import_ref.6e8
// CHECK:STDOUT: .base = imports.%Main.import_ref.bd6
// CHECK:STDOUT: .x = <poisoned>
// CHECK:STDOUT: .F = <poisoned>
// CHECK:STDOUT: extend imports.%Main.import_ref.439419.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Base [from "a.carbon"] {
// CHECK:STDOUT: complete_type_witness = imports.%Main.import_ref.6fc
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = imports.%Main.import_ref.d68
// CHECK:STDOUT: .F = imports.%Main.import_ref.bc9
// CHECK:STDOUT: .Unused = imports.%Main.import_ref.077
// CHECK:STDOUT: .x = imports.%Main.import_ref.230
// CHECK:STDOUT: .unused_y = imports.%Main.import_ref.9f4
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %pattern_type.860 = ref_binding_pattern a [concrete]
// CHECK:STDOUT: %a.var_patt: %pattern_type.860 = var_pattern %a.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a.var: ref %Child = var %a.var_patt
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %.loc7_49.1: %struct_type.x.unused_y.76a = struct_literal (%int_0, %int_1) [concrete = constants.%struct.0bf]
// CHECK:STDOUT: %.loc7_50.1: %struct_type.base.503 = struct_literal (%.loc7_49.1) [concrete = constants.%struct.cb5]
// CHECK:STDOUT: %impl.elem0.loc7_49.1: %.1c5 = impl_witness_access constants.%ImplicitAs.impl_witness.a23, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.e39]
// CHECK:STDOUT: %bound_method.loc7_49.1: <bound method> = bound_method %int_0, %impl.elem0.loc7_49.1 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.7b4]
// CHECK:STDOUT: %specific_fn.loc7_49.1: <specific function> = specific_function %impl.elem0.loc7_49.1, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc7_49.2: <bound method> = bound_method %int_0, %specific_fn.loc7_49.1 [concrete = constants.%bound_method.6e0]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc7_49.1: init %i32 = call %bound_method.loc7_49.2(%int_0) [concrete = constants.%int_0.3c0]
// CHECK:STDOUT: %.loc7_49.2: init %i32 = converted %int_0, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc7_49.1 [concrete = constants.%int_0.3c0]
// CHECK:STDOUT: %.loc7_50.2: ref %.edf = class_element_access %a.var, element0
// CHECK:STDOUT: %.loc7_49.3: ref %i32 = class_element_access %.loc7_50.2, element0
// CHECK:STDOUT: %.loc7_49.4: init %i32 to %.loc7_49.3 = in_place_init %.loc7_49.2 [concrete = constants.%int_0.3c0]
// CHECK:STDOUT: %impl.elem0.loc7_49.2: %.1c5 = impl_witness_access constants.%ImplicitAs.impl_witness.a23, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.e39]
// CHECK:STDOUT: %bound_method.loc7_49.3: <bound method> = bound_method %int_1, %impl.elem0.loc7_49.2 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.094]
// CHECK:STDOUT: %specific_fn.loc7_49.2: <specific function> = specific_function %impl.elem0.loc7_49.2, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc7_49.4: <bound method> = bound_method %int_1, %specific_fn.loc7_49.2 [concrete = constants.%bound_method.953]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc7_49.2: init %i32 = call %bound_method.loc7_49.4(%int_1) [concrete = constants.%int_1.0c6]
// CHECK:STDOUT: %.loc7_49.5: init %i32 = converted %int_1, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc7_49.2 [concrete = constants.%int_1.0c6]
// CHECK:STDOUT: %.loc7_49.6: ref %i32 = class_element_access %.loc7_50.2, element1
// CHECK:STDOUT: %.loc7_49.7: init %i32 to %.loc7_49.6 = in_place_init %.loc7_49.5 [concrete = constants.%int_1.0c6]
// CHECK:STDOUT: %.loc7_49.8: init %.edf to %.loc7_50.2 = class_init (%.loc7_49.4, %.loc7_49.7) [concrete = constants.%struct.c25]
// CHECK:STDOUT: %.loc7_50.3: init %.edf = converted %.loc7_49.1, %.loc7_49.8 [concrete = constants.%struct.c25]
// CHECK:STDOUT: %.loc7_50.4: init %Base = as_compatible %.loc7_50.3 [concrete = constants.%Base.val]
// CHECK:STDOUT: %.loc7_50.5: init %Child to %a.var = class_init (%.loc7_50.4) [concrete = constants.%Child.val]
// CHECK:STDOUT: %.loc7_3: init %Child = converted %.loc7_50.1, %.loc7_50.5 [concrete = constants.%Child.val]
// CHECK:STDOUT: assign %a.var, %.loc7_3
// CHECK:STDOUT: %Child.ref: type = name_ref Child, imports.%Main.Child [concrete = constants.%Child]
// CHECK:STDOUT: %a: ref %Child = ref_binding a, %a.var
// CHECK:STDOUT: %a.ref.loc8: ref %Child = name_ref a, %a
// CHECK:STDOUT: %x.ref: %Base.elem = name_ref x, imports.%Main.import_ref.230 [concrete = imports.%.11f]
// CHECK:STDOUT: %.loc8_4.1: ref %Base = class_element_access %a.ref.loc8, element0
// CHECK:STDOUT: %.loc8_4.2: ref %Base = converted %a.ref.loc8, %.loc8_4.1
// CHECK:STDOUT: %.loc8_4.3: ref %i32 = class_element_access %.loc8_4.2, element0
// CHECK:STDOUT: %int_2: Core.IntLiteral = int_value 2 [concrete = constants.%int_2.ecc]
// CHECK:STDOUT: %impl.elem0.loc8: %.1c5 = impl_witness_access constants.%ImplicitAs.impl_witness.a23, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.e39]
// CHECK:STDOUT: %bound_method.loc8_7.1: <bound method> = bound_method %int_2, %impl.elem0.loc8 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound.9f3]
// CHECK:STDOUT: %specific_fn.loc8: <specific function> = specific_function %impl.elem0.loc8, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc8_7.2: <bound method> = bound_method %int_2, %specific_fn.loc8 [concrete = constants.%bound_method.3cb]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc8: init %i32 = call %bound_method.loc8_7.2(%int_2) [concrete = constants.%int_2.295]
// CHECK:STDOUT: %.loc8_7: init %i32 = converted %int_2, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call.loc8 [concrete = constants.%int_2.295]
// CHECK:STDOUT: assign %.loc8_4.3, %.loc8_7
// CHECK:STDOUT: %a.ref.loc9: ref %Child = name_ref a, %a
// CHECK:STDOUT: %F.ref: %Base.F.type = name_ref F, imports.%Main.import_ref.bc9 [concrete = constants.%Base.F]
// CHECK:STDOUT: %Base.F.bound: <bound method> = bound_method %a.ref.loc9, %F.ref
// CHECK:STDOUT: %.loc9_3.1: ref %Base = class_element_access %a.ref.loc9, element0
// CHECK:STDOUT: %.loc9_3.2: ref %Base = converted %a.ref.loc9, %.loc9_3.1
// CHECK:STDOUT: %.loc9_3.3: %Base = acquire_value %.loc9_3.2
// CHECK:STDOUT: %Base.F.call: init %empty_tuple.type = call %Base.F.bound(%.loc9_3.3)
// CHECK:STDOUT: %Destroy.Op.bound: <bound method> = bound_method %a.var, constants.%Destroy.Op.1a2547.6
// CHECK:STDOUT: %Destroy.Op.call: init %empty_tuple.type = call %Destroy.Op.bound(%a.var)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Base.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.1(%self.param: ref %i32.builtin) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.2(%self.param: ref %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.3(%self.param: ref %struct_type.x.unused_y.258) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.4(%self.param: ref %Base) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.5(%self.param: ref %struct_type.base.cae) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op.loc7_3.6(%self.param: ref %Child) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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