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carbon-lang/toolchain/check/testdata/function/generic/deduce_nested_facet_value.carbon
T
Jon Ross-PerkinsandDana Jansens 5e3bb523f8 Add builtin functions for destroy, with special requirements in facet types (#6035) 
This is in support of a goal of changing the blanket `destroy` impl to
use (roughly):

```
private fn CanAggregateDestroy() -> type = "type.can_aggregate_destroy";

// Handles aggregate type destruction.
impl forall [AggregateDestroyT:! CanAggregateDestroy()] AggregateDestroyT as Destroy {
  fn Op[addr self: Self*]() = "type.aggregate_destroy";
}
```

That isn't done here because there's still other issues that migrating
raises. What this *does* do is add the builtin functions, and in
particular, support to `FacetTypeInfo` to make `CanAggregateDestroy`
work.

The "special requirement" approach in `FacetTypeInfo` allows us to
support restricting a blanket impl under the current approach of impls.
Maybe we'll find a cleaner approach that can work in the future, but
this fits into the current model by propagating similar to other
requirements. I'm using an enum mask because we have a number of similar
things to add (e.g. copy, move) but I'm not sure we need a full vector.

A few alternatives considered were:

- Supporting syntax more like `where .Self impls
TypeCanAggregateDestroy(.Self, SupportedInterface,
UnsupportedInterface)`. I think it'd be a little cleaner, but requires
better compile-time evaluation in order to assess the type of the call.
Right now it's expected to be a `FacetType` too early to make this work,
and I was concerned about pouring too much more time down this route.
- Providing an actual interface, in particular doing name lookup back
into `Core.` for an interface. This would've added name lookup overhead,
and the question of whether an `impl` exists.
- Generating an interface. This avoids the name lookup, but would still
raise the question of whether an `impl` should also be generated. Work
I've previously done generating interfaces for class destruction also
feels complex to both write and understand (an unfortunate issue).
- Still modeling as an `ImplsConstraint`, for example by defining a
special `InterfaceId::CanAggregateDestroy = -2` similar to what we do on
other ids. I was hesitant because of how this expands the number of
modes of `InterfaceId`, and things for consuming code to watch out for,
for what feels like a relatively niche set of use-cases that are only
interface-like.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
2025-09-15 17:03:43 +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/facet_types.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/function/generic/deduce_nested_facet_value.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/generic/deduce_nested_facet_value.carbon
// --- deduce_nested_facet_value.carbon
library "[[@TEST_NAME]]";
interface Y {}
interface W {}
// DD implements both Y and W.
class DD {}
impl DD as Y {}
impl DD as W {}
// CC requires D to implement Y.
class CC(D:! Y) {}
interface Z {}
// The `D` interface provides `Y` but not `W`, so we need to see that the
// parameter to `CC` is `DD` which provides `Y & W`, not just a FacetValue
// abstractly providing `Y.
impl forall [E:! Y & W] CC(E) as Z {}
fn F() {
(CC(DD)) as Z;
}
// CHECK:STDOUT: --- deduce_nested_facet_value.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Y.type: type = facet_type <@Y> [concrete]
// CHECK:STDOUT: %Self.045: %Y.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT: %W.type: type = facet_type <@W> [concrete]
// CHECK:STDOUT: %Self.7b5: %W.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT: %DD: type = class_type @DD [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %pattern_type.f6d: type = pattern_type auto [concrete]
// CHECK:STDOUT: %Destroy.impl_witness.31d: <witness> = impl_witness @DD.%Destroy.impl_witness_table [concrete]
// CHECK:STDOUT: %ptr.3d1: type = ptr_type %DD [concrete]
// CHECK:STDOUT: %pattern_type.3fc: type = pattern_type %ptr.3d1 [concrete]
// CHECK:STDOUT: %DD.as.Destroy.impl.Op.type: type = fn_type @DD.as.Destroy.impl.Op [concrete]
// CHECK:STDOUT: %DD.as.Destroy.impl.Op: %DD.as.Destroy.impl.Op.type = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %Y.impl_witness: <witness> = impl_witness file.%Y.impl_witness_table [concrete]
// CHECK:STDOUT: %W.impl_witness: <witness> = impl_witness file.%W.impl_witness_table [concrete]
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = bind_symbolic_name .Self [symbolic_self]
// CHECK:STDOUT: %D: %Y.type = bind_symbolic_name D, 0 [symbolic]
// CHECK:STDOUT: %pattern_type.6e5: type = pattern_type %Y.type [concrete]
// CHECK:STDOUT: %CC.type: type = generic_class_type @CC [concrete]
// CHECK:STDOUT: %CC.generic: %CC.type = struct_value () [concrete]
// CHECK:STDOUT: %CC.ef8: type = class_type @CC, @CC(%D) [symbolic]
// CHECK:STDOUT: %Destroy.impl_witness.520: <witness> = impl_witness @CC.%Destroy.impl_witness_table, @CC.as.Destroy.impl(%D) [symbolic]
// CHECK:STDOUT: %ptr.791: type = ptr_type %CC.ef8 [symbolic]
// CHECK:STDOUT: %pattern_type.931: type = pattern_type %ptr.791 [symbolic]
// CHECK:STDOUT: %CC.as.Destroy.impl.Op.type: type = fn_type @CC.as.Destroy.impl.Op, @CC.as.Destroy.impl(%D) [symbolic]
// CHECK:STDOUT: %CC.as.Destroy.impl.Op: %CC.as.Destroy.impl.Op.type = struct_value () [symbolic]
// CHECK:STDOUT: %Z.type: type = facet_type <@Z> [concrete]
// CHECK:STDOUT: %Self.1d7: %Z.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT: %BitAndWith.type.f2e: type = generic_interface_type @BitAndWith [concrete]
// CHECK:STDOUT: %BitAndWith.generic: %BitAndWith.type.f2e = struct_value () [concrete]
// CHECK:STDOUT: %BitAndWith.type.8a6: type = facet_type <@BitAndWith, @BitAndWith(type)> [concrete]
// CHECK:STDOUT: %BitAndWith.Op.type.9a3: type = fn_type @BitAndWith.Op, @BitAndWith(type) [concrete]
// CHECK:STDOUT: %BitAndWith.impl_witness: <witness> = impl_witness imports.%BitAndWith.impl_witness_table [concrete]
// CHECK:STDOUT: %BitAndWith.facet: %BitAndWith.type.8a6 = facet_value type, (%BitAndWith.impl_witness) [concrete]
// CHECK:STDOUT: %.fa7: type = fn_type_with_self_type %BitAndWith.Op.type.9a3, %BitAndWith.facet [concrete]
// CHECK:STDOUT: %type.as.BitAndWith.impl.Op.type: type = fn_type @type.as.BitAndWith.impl.Op [concrete]
// CHECK:STDOUT: %type.as.BitAndWith.impl.Op: %type.as.BitAndWith.impl.Op.type = struct_value () [concrete]
// CHECK:STDOUT: %type.as.BitAndWith.impl.Op.bound: <bound method> = bound_method %Y.type, %type.as.BitAndWith.impl.Op [concrete]
// CHECK:STDOUT: %facet_type: type = facet_type <@Y & @W> [concrete]
// CHECK:STDOUT: %E: %facet_type = bind_symbolic_name E, 0 [symbolic]
// CHECK:STDOUT: %pattern_type.50c: type = pattern_type %facet_type [concrete]
// CHECK:STDOUT: %Y.lookup_impl_witness: <witness> = lookup_impl_witness %E, @Y [symbolic]
// CHECK:STDOUT: %E.as_type: type = facet_access_type %E [symbolic]
// CHECK:STDOUT: %Y.facet.682: %Y.type = facet_value %E.as_type, (%Y.lookup_impl_witness) [symbolic]
// CHECK:STDOUT: %CC.6f9: type = class_type @CC, @CC(%Y.facet.682) [symbolic]
// CHECK:STDOUT: %Z.impl_witness.3fa: <witness> = impl_witness file.%Z.impl_witness_table, @CC.as.Z.impl(%E) [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %Y.facet.4e8: %Y.type = facet_value %DD, (%Y.impl_witness) [concrete]
// CHECK:STDOUT: %CC.3b3: type = class_type @CC, @CC(%Y.facet.4e8) [concrete]
// CHECK:STDOUT: %facet_value: %facet_type = facet_value %DD, (%Y.impl_witness, %W.impl_witness) [concrete]
// CHECK:STDOUT: %Z.impl_witness.8f8: <witness> = impl_witness file.%Z.impl_witness_table, @CC.as.Z.impl(%facet_value) [concrete]
// CHECK:STDOUT: %Z.facet: %Z.type = facet_value %CC.3b3, (%Z.impl_witness.8f8) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: .BitAndWith = %Core.BitAndWith
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: %Core.BitAndWith: %BitAndWith.type.f2e = import_ref Core//prelude, BitAndWith, loaded [concrete = constants.%BitAndWith.generic]
// CHECK:STDOUT: %Core.import_ref.636: %type.as.BitAndWith.impl.Op.type = import_ref Core//prelude, loc14_42, loaded [concrete = constants.%type.as.BitAndWith.impl.Op]
// CHECK:STDOUT: %BitAndWith.impl_witness_table = impl_witness_table (%Core.import_ref.636), @type.as.BitAndWith.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Y = %Y.decl
// CHECK:STDOUT: .W = %W.decl
// CHECK:STDOUT: .DD = %DD.decl
// CHECK:STDOUT: .CC = %CC.decl
// CHECK:STDOUT: .Z = %Z.decl
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Y.decl: type = interface_decl @Y [concrete = constants.%Y.type] {} {}
// CHECK:STDOUT: %W.decl: type = interface_decl @W [concrete = constants.%W.type] {} {}
// CHECK:STDOUT: %DD.decl: type = class_decl @DD [concrete = constants.%DD] {} {}
// CHECK:STDOUT: impl_decl @DD.as.Y.impl [concrete] {} {
// CHECK:STDOUT: %DD.ref: type = name_ref DD, file.%DD.decl [concrete = constants.%DD]
// CHECK:STDOUT: %Y.ref: type = name_ref Y, file.%Y.decl [concrete = constants.%Y.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Y.impl_witness_table = impl_witness_table (), @DD.as.Y.impl [concrete]
// CHECK:STDOUT: %Y.impl_witness: <witness> = impl_witness %Y.impl_witness_table [concrete = constants.%Y.impl_witness]
// CHECK:STDOUT: impl_decl @DD.as.W.impl [concrete] {} {
// CHECK:STDOUT: %DD.ref: type = name_ref DD, file.%DD.decl [concrete = constants.%DD]
// CHECK:STDOUT: %W.ref: type = name_ref W, file.%W.decl [concrete = constants.%W.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %W.impl_witness_table = impl_witness_table (), @DD.as.W.impl [concrete]
// CHECK:STDOUT: %W.impl_witness: <witness> = impl_witness %W.impl_witness_table [concrete = constants.%W.impl_witness]
// CHECK:STDOUT: %CC.decl: %CC.type = class_decl @CC [concrete = constants.%CC.generic] {
// CHECK:STDOUT: %D.patt: %pattern_type.6e5 = symbolic_binding_pattern D, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc12: type = splice_block %Y.ref [concrete = constants.%Y.type] {
// CHECK:STDOUT: %.Self: %type = bind_symbolic_name .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Y.ref: type = name_ref Y, file.%Y.decl [concrete = constants.%Y.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %D.loc12_10.2: %Y.type = bind_symbolic_name D, 0 [symbolic = %D.loc12_10.1 (constants.%D)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Z.decl: type = interface_decl @Z [concrete = constants.%Z.type] {} {}
// CHECK:STDOUT: impl_decl @CC.as.Z.impl [concrete] {
// CHECK:STDOUT: %E.patt: %pattern_type.50c = symbolic_binding_pattern E, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %CC.ref: %CC.type = name_ref CC, file.%CC.decl [concrete = constants.%CC.generic]
// CHECK:STDOUT: %E.ref: %facet_type = name_ref E, %E.loc19_14.1 [symbolic = %E.loc19_14.2 (constants.%E)]
// CHECK:STDOUT: %E.as_type.loc19_29.1: type = facet_access_type constants.%E [symbolic = %E.as_type.loc19_29.2 (constants.%E.as_type)]
// CHECK:STDOUT: %Y.facet.loc19_29.1: %Y.type = facet_value %E.as_type.loc19_29.1, (constants.%Y.lookup_impl_witness) [symbolic = %Y.facet.loc19_29.2 (constants.%Y.facet.682)]
// CHECK:STDOUT: %.loc19_29: %Y.type = converted %E.ref, %Y.facet.loc19_29.1 [symbolic = %Y.facet.loc19_29.2 (constants.%Y.facet.682)]
// CHECK:STDOUT: %CC.loc19_29.1: type = class_type @CC, @CC(constants.%Y.facet.682) [symbolic = %CC.loc19_29.2 (constants.%CC.6f9)]
// CHECK:STDOUT: %Z.ref: type = name_ref Z, file.%Z.decl [concrete = constants.%Z.type]
// CHECK:STDOUT: %.loc19_20.1: type = splice_block %.loc19_20.3 [concrete = constants.%facet_type] {
// CHECK:STDOUT: %.Self: %type = bind_symbolic_name .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Y.ref: type = name_ref Y, file.%Y.decl [concrete = constants.%Y.type]
// CHECK:STDOUT: %W.ref: type = name_ref W, file.%W.decl [concrete = constants.%W.type]
// CHECK:STDOUT: %impl.elem0: %.fa7 = impl_witness_access constants.%BitAndWith.impl_witness, element0 [concrete = constants.%type.as.BitAndWith.impl.Op]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %Y.ref, %impl.elem0 [concrete = constants.%type.as.BitAndWith.impl.Op.bound]
// CHECK:STDOUT: %type.as.BitAndWith.impl.Op.call: init type = call %bound_method(%Y.ref, %W.ref) [concrete = constants.%facet_type]
// CHECK:STDOUT: %.loc19_20.2: type = value_of_initializer %type.as.BitAndWith.impl.Op.call [concrete = constants.%facet_type]
// CHECK:STDOUT: %.loc19_20.3: type = converted %type.as.BitAndWith.impl.Op.call, %.loc19_20.2 [concrete = constants.%facet_type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %E.loc19_14.1: %facet_type = bind_symbolic_name E, 0 [symbolic = %E.loc19_14.2 (constants.%E)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Z.impl_witness_table = impl_witness_table (), @CC.as.Z.impl [concrete]
// CHECK:STDOUT: %Z.impl_witness: <witness> = impl_witness %Z.impl_witness_table, @CC.as.Z.impl(constants.%E) [symbolic = @CC.as.Z.impl.%Z.impl_witness (constants.%Z.impl_witness.3fa)]
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Y {
// CHECK:STDOUT: %Self: %Y.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.045]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @W {
// CHECK:STDOUT: %Self: %W.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.7b5]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Z {
// CHECK:STDOUT: %Self: %Z.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.1d7]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @DD.as.Destroy.impl: @DD.%Self.ref as constants.%Destroy.type {
// CHECK:STDOUT: %DD.as.Destroy.impl.Op.decl: %DD.as.Destroy.impl.Op.type = fn_decl @DD.as.Destroy.impl.Op [concrete = constants.%DD.as.Destroy.impl.Op] {
// CHECK:STDOUT: %self.patt: %pattern_type.3fc = binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.3fc = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: %.loc7: %pattern_type.f6d = addr_pattern %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: %ptr.3d1 = value_param call_param0
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%DD [concrete = constants.%DD]
// CHECK:STDOUT: %self: %ptr.3d1 = bind_name self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Op = %DD.as.Destroy.impl.Op.decl
// CHECK:STDOUT: witness = @DD.%Destroy.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @DD.as.Y.impl: %DD.ref as %Y.ref {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: witness = file.%Y.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @DD.as.W.impl: %DD.ref as %W.ref {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: witness = file.%W.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @CC.as.Destroy.impl(@CC.%D.loc12_10.2: %Y.type) {
// CHECK:STDOUT: %D: %Y.type = bind_symbolic_name D, 0 [symbolic = %D (constants.%D)]
// CHECK:STDOUT: %CC: type = class_type @CC, @CC(%D) [symbolic = %CC (constants.%CC.ef8)]
// CHECK:STDOUT: %Destroy.impl_witness: <witness> = impl_witness @CC.%Destroy.impl_witness_table, @CC.as.Destroy.impl(%D) [symbolic = %Destroy.impl_witness (constants.%Destroy.impl_witness.520)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %CC.as.Destroy.impl.Op.type: type = fn_type @CC.as.Destroy.impl.Op, @CC.as.Destroy.impl(%D) [symbolic = %CC.as.Destroy.impl.Op.type (constants.%CC.as.Destroy.impl.Op.type)]
// CHECK:STDOUT: %CC.as.Destroy.impl.Op: @CC.as.Destroy.impl.%CC.as.Destroy.impl.Op.type (%CC.as.Destroy.impl.Op.type) = struct_value () [symbolic = %CC.as.Destroy.impl.Op (constants.%CC.as.Destroy.impl.Op)]
// CHECK:STDOUT:
// CHECK:STDOUT: impl: @CC.%Self.ref as constants.%Destroy.type {
// CHECK:STDOUT: %CC.as.Destroy.impl.Op.decl: @CC.as.Destroy.impl.%CC.as.Destroy.impl.Op.type (%CC.as.Destroy.impl.Op.type) = fn_decl @CC.as.Destroy.impl.Op [symbolic = @CC.as.Destroy.impl.%CC.as.Destroy.impl.Op (constants.%CC.as.Destroy.impl.Op)] {
// CHECK:STDOUT: %self.patt: @CC.as.Destroy.impl.Op.%pattern_type (%pattern_type.931) = binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: @CC.as.Destroy.impl.Op.%pattern_type (%pattern_type.931) = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: %.loc12_17.1: %pattern_type.f6d = addr_pattern %self.param_patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: @CC.as.Destroy.impl.Op.%ptr (%ptr.791) = value_param call_param0
// CHECK:STDOUT: %.loc12_17.2: type = splice_block %Self.ref [symbolic = %CC (constants.%CC.ef8)] {
// CHECK:STDOUT: %.loc12_17.3: type = specific_constant constants.%CC.ef8, @CC(constants.%D) [symbolic = %CC (constants.%CC.ef8)]
// CHECK:STDOUT: %Self.ref: type = name_ref Self, %.loc12_17.3 [symbolic = %CC (constants.%CC.ef8)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self: @CC.as.Destroy.impl.Op.%ptr (%ptr.791) = bind_name self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Op = %CC.as.Destroy.impl.Op.decl
// CHECK:STDOUT: witness = @CC.%Destroy.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @CC.as.Z.impl(%E.loc19_14.1: %facet_type) {
// CHECK:STDOUT: %E.loc19_14.2: %facet_type = bind_symbolic_name E, 0 [symbolic = %E.loc19_14.2 (constants.%E)]
// CHECK:STDOUT: %Y.lookup_impl_witness: <witness> = lookup_impl_witness %E.loc19_14.2, @Y [symbolic = %Y.lookup_impl_witness (constants.%Y.lookup_impl_witness)]
// CHECK:STDOUT: %E.as_type.loc19_29.2: type = facet_access_type %E.loc19_14.2 [symbolic = %E.as_type.loc19_29.2 (constants.%E.as_type)]
// CHECK:STDOUT: %Y.facet.loc19_29.2: %Y.type = facet_value %E.as_type.loc19_29.2, (%Y.lookup_impl_witness) [symbolic = %Y.facet.loc19_29.2 (constants.%Y.facet.682)]
// CHECK:STDOUT: %CC.loc19_29.2: type = class_type @CC, @CC(%Y.facet.loc19_29.2) [symbolic = %CC.loc19_29.2 (constants.%CC.6f9)]
// CHECK:STDOUT: %Z.impl_witness: <witness> = impl_witness file.%Z.impl_witness_table, @CC.as.Z.impl(%E.loc19_14.2) [symbolic = %Z.impl_witness (constants.%Z.impl_witness.3fa)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: impl: %CC.loc19_29.1 as %Z.ref {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: witness = file.%Z.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @DD {
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%DD [concrete = constants.%DD]
// CHECK:STDOUT: impl_decl @DD.as.Destroy.impl [concrete] {} {}
// CHECK:STDOUT: %Destroy.impl_witness_table = impl_witness_table (@DD.as.Destroy.impl.%DD.as.Destroy.impl.Op.decl), @DD.as.Destroy.impl [concrete]
// CHECK:STDOUT: %Destroy.impl_witness: <witness> = impl_witness %Destroy.impl_witness_table [concrete = constants.%Destroy.impl_witness.31d]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%DD
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic class @CC(%D.loc12_10.2: %Y.type) {
// CHECK:STDOUT: %D.loc12_10.1: %Y.type = bind_symbolic_name D, 0 [symbolic = %D.loc12_10.1 (constants.%D)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: class {
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%CC.ef8 [symbolic = @CC.as.Destroy.impl.%CC (constants.%CC.ef8)]
// CHECK:STDOUT: impl_decl @CC.as.Destroy.impl [concrete] {} {}
// CHECK:STDOUT: %Destroy.impl_witness_table = impl_witness_table (@CC.as.Destroy.impl.%CC.as.Destroy.impl.Op.decl), @CC.as.Destroy.impl [concrete]
// CHECK:STDOUT: %Destroy.impl_witness: <witness> = impl_witness %Destroy.impl_witness_table, @CC.as.Destroy.impl(constants.%D) [symbolic = @CC.as.Destroy.impl.%Destroy.impl_witness (constants.%Destroy.impl_witness.520)]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%CC.ef8
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @DD.as.Destroy.impl.Op(%self.param: %ptr.3d1) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @CC.as.Destroy.impl.Op(@CC.%D.loc12_10.2: %Y.type) {
// CHECK:STDOUT: %D: %Y.type = bind_symbolic_name D, 0 [symbolic = %D (constants.%D)]
// CHECK:STDOUT: %CC: type = class_type @CC, @CC(%D) [symbolic = %CC (constants.%CC.ef8)]
// CHECK:STDOUT: %ptr: type = ptr_type %CC [symbolic = %ptr (constants.%ptr.791)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %ptr [symbolic = %pattern_type (constants.%pattern_type.931)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%self.param: @CC.as.Destroy.impl.Op.%ptr (%ptr.791)) = "no_op";
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %CC.ref: %CC.type = name_ref CC, file.%CC.decl [concrete = constants.%CC.generic]
// CHECK:STDOUT: %DD.ref: type = name_ref DD, file.%DD.decl [concrete = constants.%DD]
// CHECK:STDOUT: %Y.facet: %Y.type = facet_value constants.%DD, (constants.%Y.impl_witness) [concrete = constants.%Y.facet.4e8]
// CHECK:STDOUT: %.loc22_9: %Y.type = converted %DD.ref, %Y.facet [concrete = constants.%Y.facet.4e8]
// CHECK:STDOUT: %CC: type = class_type @CC, @CC(constants.%Y.facet.4e8) [concrete = constants.%CC.3b3]
// CHECK:STDOUT: %Z.ref: type = name_ref Z, file.%Z.decl [concrete = constants.%Z.type]
// CHECK:STDOUT: %facet_value: %facet_type = facet_value constants.%DD, (constants.%Y.impl_witness, constants.%W.impl_witness) [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc22_12.1: %facet_type = converted constants.%DD, %facet_value [concrete = constants.%facet_value]
// CHECK:STDOUT: %Z.facet: %Z.type = facet_value constants.%CC.3b3, (constants.%Z.impl_witness.8f8) [concrete = constants.%Z.facet]
// CHECK:STDOUT: %.loc22_12.2: %Z.type = converted %CC, %Z.facet [concrete = constants.%Z.facet]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC(constants.%D) {
// CHECK:STDOUT: %D.loc12_10.1 => constants.%D
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC.as.Destroy.impl(constants.%D) {
// CHECK:STDOUT: %D => constants.%D
// CHECK:STDOUT: %CC => constants.%CC.ef8
// CHECK:STDOUT: %Destroy.impl_witness => constants.%Destroy.impl_witness.520
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC.as.Destroy.impl.Op(constants.%D) {
// CHECK:STDOUT: %D => constants.%D
// CHECK:STDOUT: %CC => constants.%CC.ef8
// CHECK:STDOUT: %ptr => constants.%ptr.791
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.931
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC(constants.%Y.facet.682) {
// CHECK:STDOUT: %D.loc12_10.1 => constants.%Y.facet.682
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC.as.Z.impl(constants.%E) {
// CHECK:STDOUT: %E.loc19_14.2 => constants.%E
// CHECK:STDOUT: %Y.lookup_impl_witness => constants.%Y.lookup_impl_witness
// CHECK:STDOUT: %E.as_type.loc19_29.2 => constants.%E.as_type
// CHECK:STDOUT: %Y.facet.loc19_29.2 => constants.%Y.facet.682
// CHECK:STDOUT: %CC.loc19_29.2 => constants.%CC.6f9
// CHECK:STDOUT: %Z.impl_witness => constants.%Z.impl_witness.3fa
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC(constants.%Y.facet.4e8) {
// CHECK:STDOUT: %D.loc12_10.1 => constants.%Y.facet.4e8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @CC.as.Z.impl(constants.%facet_value) {
// CHECK:STDOUT: %E.loc19_14.2 => constants.%facet_value
// CHECK:STDOUT: %Y.lookup_impl_witness => constants.%Y.impl_witness
// CHECK:STDOUT: %E.as_type.loc19_29.2 => constants.%DD
// CHECK:STDOUT: %Y.facet.loc19_29.2 => constants.%Y.facet.4e8
// CHECK:STDOUT: %CC.loc19_29.2 => constants.%CC.3b3
// CHECK:STDOUT: %Z.impl_witness => constants.%Z.impl_witness.8f8
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: }
// CHECK:STDOUT:
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