Never perform instance binding with implicit `Self` in an interface (#5121)

Resolves TODO by creating new function `GetAssociatedValue` with the
logic from `PerformCompoundMemberAccess` restricted to the
non-instance-binding case.

---------

Co-authored-by: Josh L <josh11b@users.noreply.github.com>

toolchain/check/member_access.cpp

@@ -564,6 +564,73 @@ auto PerformAction(Context& context, SemIR::LocId loc_id,
   return member_id;
 }
 
+// Logic shared by GetAssociatedValue() and PerformCompoundMemberAccess().
+static auto GetAssociatedValueImpl(Context& context, SemIR::LocId loc_id,
+                                   SemIR::InstId base_id,
+                                   const SemIR::AssociatedEntity& assoc_entity,
+                                   SemIR::TypeId interface_type_id,
+                                   SemIR::SpecificId interface_specific_id)
+    -> SemIR::InstId {
+  // Convert to the interface type of the associated member, to get a facet
+  // value.
+  auto facet_inst_id =
+      ConvertToValueOfType(context, loc_id, base_id, interface_type_id);
+  if (facet_inst_id == SemIR::ErrorInst::SingletonInstId) {
+    return SemIR::ErrorInst::SingletonInstId;
+  }
+  // That facet value has both the self type we need below and the witness
+  // we are going to use to look up the value of the associated member.
+  auto self_type_const_id = TryEvalInst(
+      context, SemIR::InstId::None,
+      SemIR::FacetAccessType{.type_id = SemIR::TypeType::SingletonTypeId,
+                             .facet_value_inst_id = facet_inst_id});
+  auto self_type_id =
+      context.types().GetTypeIdForTypeConstantId(self_type_const_id);
+  auto witness_id =
+      GetOrAddInst(context, loc_id,
+                   SemIR::FacetAccessWitness{
+                       .type_id = GetSingletonType(
+                           context, SemIR::WitnessType::SingletonInstId),
+                       .facet_value_inst_id = facet_inst_id,
+                       // There's only one interface in this facet type.
+                       .index = SemIR::ElementIndex(0)});
+  // Before we can access the element of the witness, we need to figure out
+  // the type of that element. It depends on the self type and the specific
+  // interface.
+  auto assoc_type_id = GetTypeForSpecificAssociatedEntity(
+      context, loc_id, interface_specific_id, assoc_entity.decl_id,
+      self_type_id, witness_id);
+  // Now that we have the witness, an index into it, and the type of the
+  // result, return the element of the witness.
+  return GetOrAddInst<SemIR::ImplWitnessAccess>(context, loc_id,
+                                                {.type_id = assoc_type_id,
+                                                 .witness_id = witness_id,
+                                                 .index = assoc_entity.index});
+}
+
+auto GetAssociatedValue(Context& context, SemIR::LocId loc_id,
+                        SemIR::InstId base_id,
+                        SemIR::InstId assoc_entity_inst_id,
+                        SemIR::TypeId interface_type_id) -> SemIR::InstId {
+  // TODO: This function shares a code with PerformCompoundMemberAccess(),
+  // it would be nice to reduce the duplication.
+
+  auto interface_type = GetInterfaceFromFacetType(context, interface_type_id);
+  // An associated entity is always associated with a single interface.
+  CARBON_CHECK(interface_type);
+
+  auto value_inst_id =
+      context.constant_values().GetConstantInstId(assoc_entity_inst_id);
+  CARBON_CHECK(value_inst_id.has_value());
+  auto assoc_entity =
+      context.insts().GetAs<SemIR::AssociatedEntity>(value_inst_id);
+  auto decl_id = assoc_entity.decl_id;
+  LoadImportRef(context, decl_id);
+
+  return GetAssociatedValueImpl(context, loc_id, base_id, assoc_entity,
+                                interface_type_id, interface_type->specific_id);
+}
+
 auto PerformCompoundMemberAccess(Context& context, SemIR::LocId loc_id,
                                  SemIR::InstId base_id,
                                  SemIR::InstId member_expr_id,
@@ -610,43 +677,12 @@ auto PerformCompoundMemberAccess(Context& context, SemIR::LocId loc_id,
                             member_id, missing_impl_diagnoser);
       // Next we will perform instance binding.
     } else {
-      // Step 2b: For non-instance methods and associated constants, we convert
-      // to the interface type of the associated member, to get a facet value.
-      auto facet_inst_id =
-          ConvertToValueOfType(context, loc_id, base_id, interface_type_id);
-      if (facet_inst_id == SemIR::ErrorInst::SingletonInstId) {
-        return SemIR::ErrorInst::SingletonInstId;
-      }
-      // That facet value has both the self type we need below and the witness
-      // we are going to use to look up the value of the associated member.
-      auto self_type_const_id = TryEvalInst(
-          context, SemIR::InstId::None,
-          SemIR::FacetAccessType{.type_id = SemIR::TypeType::SingletonTypeId,
-                                 .facet_value_inst_id = facet_inst_id});
-      auto self_type_id =
-          context.types().GetTypeIdForTypeConstantId(self_type_const_id);
-      auto witness_id =
-          GetOrAddInst(context, loc_id,
-                       SemIR::FacetAccessWitness{
-                           .type_id = GetSingletonType(
-                               context, SemIR::WitnessType::SingletonInstId),
-                           .facet_value_inst_id = facet_inst_id,
-                           // There's only one interface in this facet type.
-                           .index = SemIR::ElementIndex(0)});
-      // Before we can access the element of the witness, we need to figure out
-      // the type of that element. It depends on the self type and the specific
-      // interface.
-      auto assoc_type_id = GetTypeForSpecificAssociatedEntity(
-          context, loc_id, interface_type->specific_id, decl_id, self_type_id,
-          witness_id);
-      // Now that we have the witness, an index into it, and the type of the
-      // result, return the element of the witness. No instance binding to do,
-      // so return instead of continuing.
-      return GetOrAddInst<SemIR::ImplWitnessAccess>(
-          context, loc_id,
-          {.type_id = assoc_type_id,
-           .witness_id = witness_id,
-           .index = assoc_entity.index});
+      // Step 2b: For non-instance methods and associated constants, we access
+      // the value of the associated constant, and don't do any instance
+      // binding.
+      return GetAssociatedValueImpl(context, loc_id, base_id, assoc_entity,
+                                    interface_type_id,
+                                    interface_type->specific_id);
     }
   } else if (context.insts().Is<SemIR::TupleType>(
                  context.constant_values().GetInstId(base_type_const_id))) {

toolchain/check/member_access.h

@@ -25,6 +25,14 @@ auto PerformCompoundMemberAccess(
     SemIR::InstId member_expr_id,
     MakeDiagnosticBuilderFn missing_impl_diagnoser = nullptr) -> SemIR::InstId;
 
+// Finds the value of an associated entity (given by assoc_entity_inst_id, a
+// member of the interface given by interface_type_id) associated with a type or
+// facet (given by base_id). Never does instance binding.
+auto GetAssociatedValue(Context& context, SemIR::LocId loc_id,
+                        SemIR::InstId base_id,
+                        SemIR::InstId assoc_entity_inst_id,
+                        SemIR::TypeId interface_type_id) -> SemIR::InstId;
+
 // Creates SemIR to perform a tuple index with base expression `tuple_inst_id`
 // and index expression `index_inst_id`. Returns the result of the access.
 auto PerformTupleAccess(Context& context, SemIR::LocId loc_id,

toolchain/check/name_lookup.cpp

@@ -108,17 +108,16 @@ auto LookupUnqualifiedName(Context& context, Parse::NodeId node_id,
       if (scope.is_interface_definition()) {
         SemIR::InstId target_inst_id =
             non_lexical_result.scope_result.target_inst_id();
-        if (context.types().Is<SemIR::AssociatedEntityType>(
-                context.insts().Get(target_inst_id).type_id())) {
+        if (auto assoc_type =
+                context.types().TryGetAs<SemIR::AssociatedEntityType>(
+                    context.insts().Get(target_inst_id).type_id())) {
           auto interface_decl =
               context.insts().GetAs<SemIR::InterfaceDecl>(scope.inst_id());
           const auto& interface =
               context.interfaces().Get(interface_decl.interface_id);
-          // TODO: Refactor the code so that we can call the "no instance
-          // binding" case from `PerformCompoundMemberAccess` as a separate
-          // function (`GetAssociatedValue`).
-          SemIR::InstId result_inst_id = PerformCompoundMemberAccess(
-              context, node_id, interface.self_param_id, target_inst_id);
+          SemIR::InstId result_inst_id =
+              GetAssociatedValue(context, node_id, interface.self_param_id,
+                                 target_inst_id, assoc_type->interface_type_id);
           non_lexical_result.scope_result = SemIR::ScopeLookupResult::MakeFound(
               result_inst_id, non_lexical_result.scope_result.access_kind());
         }

toolchain/check/testdata/facet/no_prelude/access.carbon

@@ -8,6 +8,14 @@
 // TIP: To dump output, run:
 // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/facet/no_prelude/access.carbon
 
+// --- core.carbon
+package Core;
+// TODO: switch to min_prelude
+
+interface ImplicitAs(Dest:! type) {
+  fn Convert[self: Self]() -> Dest;
+}
+
 // --- access_assoc_fn.carbon
 
 library "[[@TEST_NAME]]";
@@ -82,6 +90,164 @@ impl () as I where .T = () {}
 // CHECK:STDERR:
 var v: ().(Id(I.T));
 
+// --- fail_non_const_associated_in_interface.carbon
+library "[[@TEST_NAME]]";
+
+fn Id[U:! type](x: U) -> U { return x; }
+
+interface J {
+  let T:! type;
+  // CHECK:STDERR: fail_non_const_associated_in_interface.carbon:[[@LINE+4]]:13: error: cannot evaluate type expression [TypeExprEvaluationFailure]
+  // CHECK:STDERR:   fn F() -> Id(T);
+  // CHECK:STDERR:             ^~~~~
+  // CHECK:STDERR:
+  fn F() -> Id(T);
+}
+
+// --- fail_alias_to_non_const_assoc_entity.carbon
+library "[[@TEST_NAME]]";
+
+import Core;
+
+interface I {
+  let T:! type;
+}
+
+// CHECK:STDERR: fail_alias_to_non_const_assoc_entity.carbon:[[@LINE+4]]:8: error: semantics TODO: `HandleAutoTypeLiteral` [SemanticsTodo]
+// CHECK:STDERR: let x: auto = I.T;
+// CHECK:STDERR:        ^~~~
+// CHECK:STDERR:
+let x: auto = I.T;
+
+interface J {
+  // Is this valid?
+  alias U = x;
+  // type of U is an assoc entity type, but value is not constant.
+  fn F() -> U;
+}
+
+// --- to_import.carbon
+library "[[@TEST_NAME]]";
+
+interface I {
+  let T:! type;
+}
+
+alias U = I.T;
+
+// --- fail_access_alias_in_imported_library.carbon
+library "[[@TEST_NAME]]";
+
+import Core;
+import library "to_import";
+
+interface J {
+  // extend I;
+  alias V = U;
+  // CHECK:STDERR: fail_access_alias_in_imported_library.carbon:[[@LINE+7]]:13: error: cannot implicitly convert type `Self` that implements `J` into type implementing `I` [ConversionFailureFacetToFacet]
+  // CHECK:STDERR:   fn F() -> V;
+  // CHECK:STDERR:             ^
+  // CHECK:STDERR: fail_access_alias_in_imported_library.carbon:[[@LINE+4]]:13: note: type `J` does not implement interface `Core.ImplicitAs(I)` [MissingImplInMemberAccessNote]
+  // CHECK:STDERR:   fn F() -> V;
+  // CHECK:STDERR:             ^
+  // CHECK:STDERR:
+  fn F() -> V;
+}
+
+// CHECK:STDOUT: --- core.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic]
+// CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.type.96f: type = generic_interface_type @ImplicitAs [concrete]
+// CHECK:STDOUT:   %ImplicitAs.generic: %ImplicitAs.type.96f = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.type.07f: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.07f = bind_symbolic_name Self, 1 [symbolic]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic]
+// CHECK:STDOUT:   %Convert: %Convert.type = struct_value () [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type %ImplicitAs.type.07f [symbolic]
+// CHECK:STDOUT:   %assoc0: %ImplicitAs.assoc_type = assoc_entity element0, @ImplicitAs.%Convert.decl [symbolic]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .ImplicitAs = %ImplicitAs.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %ImplicitAs.decl: %ImplicitAs.type.96f = interface_decl @ImplicitAs [concrete = constants.%ImplicitAs.generic] {
+// CHECK:STDOUT:     %Dest.patt.loc4_22.1: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc4_22.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Dest.loc4_22.1: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc4_22.2 (constants.%Dest)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(%Dest.loc4_22.1: type) {
+// CHECK:STDOUT:   %Dest.loc4_22.2: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc4_22.2 (constants.%Dest)]
+// CHECK:STDOUT:   %Dest.patt.loc4_22.2: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc4_22.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest.loc4_22.2)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.07f)]
+// CHECK:STDOUT:   %Self.2: %ImplicitAs.type.07f = bind_symbolic_name Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest.loc4_22.2) [symbolic = %Convert.type (constants.%Convert.type)]
+// CHECK:STDOUT:   %Convert: @ImplicitAs.%Convert.type (%Convert.type) = struct_value () [symbolic = %Convert (constants.%Convert)]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.07f) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type)]
+// CHECK:STDOUT:   %assoc0.loc5_35.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc5_35.2 (constants.%assoc0)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   interface {
+// CHECK:STDOUT:     %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.07f) = bind_symbolic_name Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Convert.decl: @ImplicitAs.%Convert.type (%Convert.type) = fn_decl @Convert [symbolic = @ImplicitAs.%Convert (constants.%Convert)] {
+// CHECK:STDOUT:       %self.patt: @Convert.%Self.as_type.loc5_20.1 (%Self.as_type) = binding_pattern self
+// CHECK:STDOUT:       %self.param_patt: @Convert.%Self.as_type.loc5_20.1 (%Self.as_type) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:       %return.patt: @Convert.%Dest (%Dest) = return_slot_pattern
+// CHECK:STDOUT:       %return.param_patt: @Convert.%Dest (%Dest) = out_param_pattern %return.patt, call_param1
+// CHECK:STDOUT:     } {
+// CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @ImplicitAs.%Dest.loc4_22.1 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:       %self.param: @Convert.%Self.as_type.loc5_20.1 (%Self.as_type) = value_param call_param0
+// CHECK:STDOUT:       %.loc5_20.1: type = splice_block %.loc5_20.3 [symbolic = %Self.as_type.loc5_20.1 (constants.%Self.as_type)] {
+// CHECK:STDOUT:         %.loc5_20.2: @Convert.%ImplicitAs.type (%ImplicitAs.type.07f) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %Self.ref: @Convert.%ImplicitAs.type (%ImplicitAs.type.07f) = name_ref Self, %.loc5_20.2 [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %Self.as_type.loc5_20.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc5_20.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:         %.loc5_20.3: type = converted %Self.ref, %Self.as_type.loc5_20.2 [symbolic = %Self.as_type.loc5_20.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:       }
+// CHECK:STDOUT:       %self: @Convert.%Self.as_type.loc5_20.1 (%Self.as_type) = bind_name self, %self.param
+// CHECK:STDOUT:       %return.param: ref @Convert.%Dest (%Dest) = out_param call_param1
+// CHECK:STDOUT:       %return: ref @Convert.%Dest (%Dest) = return_slot %return.param
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:     %assoc0.loc5_35.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc5_35.2 (constants.%assoc0)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Dest = <poisoned>
+// CHECK:STDOUT:     .Convert = %assoc0.loc5_35.1
+// CHECK:STDOUT:     witness = (%Convert.decl)
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Convert(@ImplicitAs.%Dest.loc4_22.1: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.07f)) {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.07f)]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.07f = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:   %Self.as_type.loc5_20.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc5_20.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Convert.%Self.as_type.loc5_20.1 (%Self.as_type)]() -> @Convert.%Dest (%Dest);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
+// CHECK:STDOUT:   %Dest.loc4_22.2 => constants.%Dest
+// CHECK:STDOUT:   %Dest.patt.loc4_22.2 => constants.%Dest
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Convert(constants.%Dest, constants.%Self) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.07f
+// CHECK:STDOUT:   %Self => constants.%Self
+// CHECK:STDOUT:   %Self.as_type.loc5_20.1 => constants.%Self.as_type
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(@Convert.%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(%Dest.loc4_22.2) {}
+// CHECK:STDOUT:
 // CHECK:STDOUT: --- access_assoc_fn.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {
@@ -797,3 +963,357 @@ var v: ().(Id(I.T));
 // CHECK:STDOUT:   %require_complete => constants.%complete_type
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_non_const_associated_in_interface.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %U: type = bind_symbolic_name U, 0 [symbolic]
+// CHECK:STDOUT:   %U.patt: type = symbolic_binding_pattern U, 0 [symbolic]
+// CHECK:STDOUT:   %Id.type: type = fn_type @Id [concrete]
+// CHECK:STDOUT:   %Id: %Id.type = struct_value () [concrete]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %U [symbolic]
+// CHECK:STDOUT:   %J.type: type = facet_type <@J> [concrete]
+// CHECK:STDOUT:   %Self: %J.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %J.assoc_type: type = assoc_entity_type %J.type [concrete]
+// CHECK:STDOUT:   %assoc0: %J.assoc_type = assoc_entity element0, @J.%T [concrete]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic]
+// CHECK:STDOUT:   %Self.as_wit.iface0: <witness> = facet_access_witness %Self, element0 [symbolic]
+// CHECK:STDOUT:   %J.facet: %J.type = facet_value %Self.as_type, (%Self.as_wit.iface0) [symbolic]
+// CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %Self.as_wit.iface0, element0 [symbolic]
+// CHECK:STDOUT:   %Id.specific_fn: <specific function> = specific_function %Id, @Id(type) [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %assoc1: %J.assoc_type = assoc_entity element1, @J.%F.decl [concrete]
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness type [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .Id = %Id.decl
+// CHECK:STDOUT:     .J = %J.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Id.decl: %Id.type = fn_decl @Id [concrete = constants.%Id] {
+// CHECK:STDOUT:     %U.patt.loc3_7.1: type = symbolic_binding_pattern U, 0 [symbolic = %U.patt.loc3_7.2 (constants.%U.patt)]
+// CHECK:STDOUT:     %x.patt: @Id.%U.loc3_7.2 (%U) = binding_pattern x
+// CHECK:STDOUT:     %x.param_patt: @Id.%U.loc3_7.2 (%U) = value_param_pattern %x.patt, call_param0
+// CHECK:STDOUT:     %return.patt: @Id.%U.loc3_7.2 (%U) = return_slot_pattern
+// CHECK:STDOUT:     %return.param_patt: @Id.%U.loc3_7.2 (%U) = out_param_pattern %return.patt, call_param1
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %U.ref.loc3_26: type = name_ref U, %U.loc3_7.1 [symbolic = %U.loc3_7.2 (constants.%U)]
+// CHECK:STDOUT:     %U.loc3_7.1: type = bind_symbolic_name U, 0 [symbolic = %U.loc3_7.2 (constants.%U)]
+// CHECK:STDOUT:     %x.param: @Id.%U.loc3_7.2 (%U) = value_param call_param0
+// CHECK:STDOUT:     %U.ref.loc3_20: type = name_ref U, %U.loc3_7.1 [symbolic = %U.loc3_7.2 (constants.%U)]
+// CHECK:STDOUT:     %x: @Id.%U.loc3_7.2 (%U) = bind_name x, %x.param
+// CHECK:STDOUT:     %return.param: ref @Id.%U.loc3_7.2 (%U) = out_param call_param1
+// CHECK:STDOUT:     %return: ref @Id.%U.loc3_7.2 (%U) = return_slot %return.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %J.decl: type = interface_decl @J [concrete = constants.%J.type] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @J {
+// CHECK:STDOUT:   %Self: %J.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
+// CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {
+// CHECK:STDOUT:     %assoc0: %J.assoc_type = assoc_entity element0, @J.%T [concrete = constants.%assoc0]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
+// CHECK:STDOUT:     %return.patt: <error> = return_slot_pattern
+// CHECK:STDOUT:     %return.param_patt: <error> = out_param_pattern %return.patt, call_param0
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Id.ref: %Id.type = name_ref Id, file.%Id.decl [concrete = constants.%Id]
+// CHECK:STDOUT:     %Self.as_wit.iface0.loc11_16.2: <witness> = facet_access_witness @J.%Self, element0 [symbolic = %Self.as_wit.iface0.loc11_16.1 (constants.%Self.as_wit.iface0)]
+// CHECK:STDOUT:     %impl.elem0.loc11_16.2: type = impl_witness_access %Self.as_wit.iface0.loc11_16.2, element0 [symbolic = %impl.elem0.loc11_16.1 (constants.%impl.elem0)]
+// CHECK:STDOUT:     %T.ref: type = name_ref T, %impl.elem0.loc11_16.2 [symbolic = %impl.elem0.loc11_16.1 (constants.%impl.elem0)]
+// CHECK:STDOUT:     %Id.specific_fn: <specific function> = specific_function %Id.ref, @Id(type) [concrete = constants.%Id.specific_fn]
+// CHECK:STDOUT:     %Id.call: init type = call %Id.specific_fn(%T.ref)
+// CHECK:STDOUT:     %.loc11_17.1: type = value_of_initializer %Id.call
+// CHECK:STDOUT:     %.loc11_17.2: type = converted %Id.call, %.loc11_17.1
+// CHECK:STDOUT:     %return.param: ref <error> = out_param call_param0
+// CHECK:STDOUT:     %return: ref <error> = return_slot %return.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %assoc1: %J.assoc_type = assoc_entity element1, %F.decl [concrete = constants.%assoc1]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   .T = @T.%assoc0
+// CHECK:STDOUT:   .Id = <poisoned>
+// CHECK:STDOUT:   .F = %assoc1
+// CHECK:STDOUT:   witness = (%T, %F.decl)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic assoc_const @T(@J.%Self: %J.type) {
+// CHECK:STDOUT:   assoc_const T:! type;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Id(%U.loc3_7.1: type) {
+// CHECK:STDOUT:   %U.loc3_7.2: type = bind_symbolic_name U, 0 [symbolic = %U.loc3_7.2 (constants.%U)]
+// CHECK:STDOUT:   %U.patt.loc3_7.2: type = symbolic_binding_pattern U, 0 [symbolic = %U.patt.loc3_7.2 (constants.%U.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @Id.%U.loc3_7.2 (%U) [symbolic = %require_complete (constants.%require_complete)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%U.patt.loc3_7.1: type](%x.param_patt: @Id.%U.loc3_7.2 (%U)) -> @Id.%U.loc3_7.2 (%U) {
+// CHECK:STDOUT:   !entry:
+// CHECK:STDOUT:     %x.ref: @Id.%U.loc3_7.2 (%U) = name_ref x, %x
+// CHECK:STDOUT:     return %x.ref
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @F(@J.%Self: %J.type) {
+// CHECK:STDOUT:   %Self: %J.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:   %Self.as_wit.iface0.loc11_16.1: <witness> = facet_access_witness %Self, element0 [symbolic = %Self.as_wit.iface0.loc11_16.1 (constants.%Self.as_wit.iface0)]
+// CHECK:STDOUT:   %impl.elem0.loc11_16.1: type = impl_witness_access %Self.as_wit.iface0.loc11_16.1, element0 [symbolic = %impl.elem0.loc11_16.1 (constants.%impl.elem0)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn() -> <error>;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Id(constants.%U) {
+// CHECK:STDOUT:   %U.loc3_7.2 => constants.%U
+// CHECK:STDOUT:   %U.patt.loc3_7.2 => constants.%U
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @T(constants.%Self) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @T(constants.%J.facet) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Id(type) {
+// CHECK:STDOUT:   %U.loc3_7.2 => type
+// CHECK:STDOUT:   %U.patt.loc3_7.2 => type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %require_complete => constants.%complete_type
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @F(constants.%Self) {
+// CHECK:STDOUT:   %Self => constants.%Self
+// CHECK:STDOUT:   %Self.as_wit.iface0.loc11_16.1 => constants.%Self.as_wit.iface0
+// CHECK:STDOUT:   %impl.elem0.loc11_16.1 => constants.%impl.elem0
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_alias_to_non_const_assoc_entity.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
+// CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, @I.%T [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @I {
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
+// CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {
+// CHECK:STDOUT:     %assoc0: %I.assoc_type = assoc_entity element0, @I.%T [concrete = constants.%assoc0]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   .T = @T.%assoc0
+// CHECK:STDOUT:   witness = (%T)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic assoc_const @T(@I.%Self: %I.type) {
+// CHECK:STDOUT:   assoc_const T:! type;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @T(constants.%Self) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- to_import.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
+// CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, @I.%T [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .I = %I.decl
+// CHECK:STDOUT:     .U = %U
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
+// CHECK:STDOUT:   %I.ref: type = name_ref I, %I.decl [concrete = constants.%I.type]
+// CHECK:STDOUT:   %T.ref: %I.assoc_type = name_ref T, @T.%assoc0 [concrete = constants.%assoc0]
+// CHECK:STDOUT:   %U: %I.assoc_type = bind_alias U, @T.%assoc0 [concrete = constants.%assoc0]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @I {
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
+// CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {
+// CHECK:STDOUT:     %assoc0: %I.assoc_type = assoc_entity element0, @I.%T [concrete = constants.%assoc0]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   .T = @T.%assoc0
+// CHECK:STDOUT:   witness = (%T)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic assoc_const @T(@I.%Self: %I.type) {
+// CHECK:STDOUT:   assoc_const T:! type;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @T(constants.%Self) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_access_alias_in_imported_library.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %J.type: type = facet_type <@J> [concrete]
+// CHECK:STDOUT:   %Self.ccd: %J.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
+// CHECK:STDOUT:   %Self.826: %I.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
+// CHECK:STDOUT:   %assoc0.0c0: %I.assoc_type = assoc_entity element0, imports.%Main.import_ref.652 [concrete]
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.type.d62: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic]
+// CHECK:STDOUT:   %Self.519: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic]
+// CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic]
+// CHECK:STDOUT:   %Convert.type.275: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic]
+// CHECK:STDOUT:   %Convert.42e: %Convert.type.275 = struct_value () [symbolic]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self.519 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.837: type = assoc_entity_type %ImplicitAs.type.d62 [symbolic]
+// CHECK:STDOUT:   %assoc0.02f: %ImplicitAs.assoc_type.837 = assoc_entity element0, imports.%Core.import_ref.1c7 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.type.c42: type = facet_type <@ImplicitAs, @ImplicitAs(%I.type)> [concrete]
+// CHECK:STDOUT:   %Convert.type.7ef: type = fn_type @Convert, @ImplicitAs(%I.type) [concrete]
+// CHECK:STDOUT:   %Convert.c77: %Convert.type.7ef = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.167: type = assoc_entity_type %ImplicitAs.type.c42 [concrete]
+// CHECK:STDOUT:   %assoc0.0e0: %ImplicitAs.assoc_type.167 = assoc_entity element0, imports.%Core.import_ref.1c7 [concrete]
+// CHECK:STDOUT:   %assoc0.43d: %ImplicitAs.assoc_type.837 = assoc_entity element0, imports.%Core.import_ref.207 [symbolic]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %J.assoc_type: type = assoc_entity_type %J.type [concrete]
+// CHECK:STDOUT:   %assoc0.ebc: %J.assoc_type = assoc_entity element0, @J.%F.decl [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Main.I = import_ref Main//to_import, I, unloaded
+// CHECK:STDOUT:   %Main.U: %I.assoc_type = import_ref Main//to_import, U, loaded [concrete = constants.%assoc0.0c0]
+// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
+// CHECK:STDOUT:     import Core//default
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Main.import_ref.e5d = import_ref Main//to_import, inst16 [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.c12 = import_ref Main//to_import, loc4_8, unloaded
+// CHECK:STDOUT:   %Main.T = import_ref Main//to_import, T, unloaded
+// CHECK:STDOUT:   %Main.import_ref.5dd: %I.type = import_ref Main//to_import, inst16 [no loc], loaded [symbolic = constants.%Self.826]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.1: type = import_ref Core//default, loc4_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ff5 = import_ref Core//default, inst25 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.630: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = import_ref Core//default, loc5_35, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.43d)]
+// CHECK:STDOUT:   %Core.Convert = import_ref Core//default, Convert, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//default, loc4_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) = import_ref Core//default, inst25 [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Core.import_ref.1c7: @ImplicitAs.%Convert.type (%Convert.type.275) = import_ref Core//default, loc5_35, loaded [symbolic = @ImplicitAs.%Convert (constants.%Convert.42e)]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .I = imports.%Main.I
+// CHECK:STDOUT:     .U = imports.%Main.U
+// CHECK:STDOUT:     .Core = imports.%Core
+// CHECK:STDOUT:     .J = %J.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %default.import = import <none>
+// CHECK:STDOUT:   %J.decl: type = interface_decl @J [concrete = constants.%J.type] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @J {
+// CHECK:STDOUT:   %Self: %J.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.ccd]
+// CHECK:STDOUT:   %U.ref: %I.assoc_type = name_ref U, imports.%Main.U [concrete = constants.%assoc0.0c0]
+// CHECK:STDOUT:   %V: %I.assoc_type = bind_alias V, imports.%Main.U [concrete = constants.%assoc0.0c0]
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
+// CHECK:STDOUT:     %return.patt: <error> = return_slot_pattern
+// CHECK:STDOUT:     %return.param_patt: <error> = out_param_pattern %return.patt, call_param0
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %.loc16: %I.type = converted @J.%Self, <error> [concrete = <error>]
+// CHECK:STDOUT:     %V.ref: <error> = name_ref V, <error> [concrete = <error>]
+// CHECK:STDOUT:     %return.param: ref <error> = out_param call_param0
+// CHECK:STDOUT:     %return: ref <error> = return_slot %return.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %assoc0: %J.assoc_type = assoc_entity element0, %F.decl [concrete = constants.%assoc0.ebc]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   .U = <poisoned>
+// CHECK:STDOUT:   .V = %V
+// CHECK:STDOUT:   .F = %assoc0
+// CHECK:STDOUT:   witness = (%F.decl)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @I [from "to_import.carbon"] {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = imports.%Main.import_ref.e5d
+// CHECK:STDOUT:   .T = imports.%Main.import_ref.c12
+// CHECK:STDOUT:   witness = (imports.%Main.T)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(imports.%Core.import_ref.5ab3ec.1: type) [from "core.carbon"] {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt (constants.%Dest.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.d62)]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic = %Convert.type (constants.%Convert.type.275)]
+// CHECK:STDOUT:   %Convert: @ImplicitAs.%Convert.type (%Convert.type.275) = struct_value () [symbolic = %Convert (constants.%Convert.42e)]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type.837)]
+// CHECK:STDOUT:   %assoc0: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = assoc_entity element0, imports.%Core.import_ref.1c7 [symbolic = %assoc0 (constants.%assoc0.02f)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   interface {
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Self = imports.%Core.import_ref.ff5
+// CHECK:STDOUT:     .Convert = imports.%Core.import_ref.630
+// CHECK:STDOUT:     witness = (imports.%Core.Convert)
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic assoc_const @T(imports.%Main.import_ref.5dd: %I.type) [from "to_import.carbon"] {
+// CHECK:STDOUT:   assoc_const T:! type;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Convert(imports.%Core.import_ref.5ab3ec.2: type, imports.%Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62)) [from "core.carbon"] {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.d62)]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic = %Self.as_type (constants.%Self.as_type)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Convert.%Self.as_type (%Self.as_type)]() -> @Convert.%Dest (%Dest);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @F(@J.%Self: %J.type) {
+// CHECK:STDOUT:   fn() -> <error>;
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @T(constants.%Self.826) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %Dest.patt => constants.%Dest
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(@Convert.%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Convert(constants.%Dest, constants.%Self.519) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.d62
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%I.type) {
+// CHECK:STDOUT:   %Dest => constants.%I.type
+// CHECK:STDOUT:   %Dest.patt => constants.%I.type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.c42
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.7ef
+// CHECK:STDOUT:   %Convert => constants.%Convert.c77
+// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.167
+// CHECK:STDOUT:   %assoc0 => constants.%assoc0.0e0
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @F(constants.%Self.ccd) {}
+// CHECK:STDOUT:

toolchain/check/testdata/interface/no_prelude/fail_assoc_const_alias.carbon

@@ -71,16 +71,17 @@ interface A {
 }
 interface B {
   alias F = A.F;
-  // TODO: This should be getting a different error here, since it should not
-  // be binding `A.F` to `Self`.
-  // CHECK:STDERR: fail_call_method_alias.carbon:[[@LINE+4]]:13: error: cannot access member of interface `A` in type `B` that does not implement that interface [MissingImplInMemberAccess]
+  // CHECK:STDERR: fail_call_method_alias.carbon:[[@LINE+7]]:13: error: cannot implicitly convert type `Self` that implements `B` into type implementing `A` [ConversionFailureFacetToFacet]
+  // CHECK:STDERR:   fn G() -> F();
+  // CHECK:STDERR:             ^
+  // CHECK:STDERR: fail_call_method_alias.carbon:[[@LINE+4]]:13: note: type `B` does not implement interface `Core.ImplicitAs(A)` [MissingImplInMemberAccessNote]
   // CHECK:STDERR:   fn G() -> F();
   // CHECK:STDERR:             ^
   // CHECK:STDERR:
   fn G() -> F();
 }
 
-// --- fail_todo_call_with_compound_member_access.carbon
+// --- call_with_compound_member_access.carbon
 library "[[@TEST_NAME]]";
 
 import Core;
@@ -89,12 +90,7 @@ interface C {
   fn F[self: Self]();
   // TODO: Add `default` once supported.
   fn G[self: Self]() {
-    // These should both work.
     self.F();
-    // CHECK:STDERR: fail_todo_call_with_compound_member_access.carbon:[[@LINE+4]]:11: error: cannot access member of interface `C` in type `C` that does not implement that interface [MissingImplInMemberAccess]
-    // CHECK:STDERR:     self.(F)();
-    // CHECK:STDERR:           ^
-    // CHECK:STDERR:
     self.(F)();
   }
 }
@@ -598,13 +594,28 @@ interface C {
 // CHECK:STDOUT: constants {
 // CHECK:STDOUT:   %A.type: type = facet_type <@A> [concrete]
 // CHECK:STDOUT:   %Self.31d: %A.type = bind_symbolic_name Self, 0 [symbolic]
-// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self.31d [symbolic]
+// CHECK:STDOUT:   %Self.as_type.01e: type = facet_access_type %Self.31d [symbolic]
 // CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
 // CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
 // CHECK:STDOUT:   %A.assoc_type: type = assoc_entity_type %A.type [concrete]
 // CHECK:STDOUT:   %assoc0.70d: %A.assoc_type = assoc_entity element0, @A.%F.decl [concrete]
 // CHECK:STDOUT:   %B.type: type = facet_type <@B> [concrete]
 // CHECK:STDOUT:   %Self.783: %B.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.type.d62: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic]
+// CHECK:STDOUT:   %Self.519: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic]
+// CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic]
+// CHECK:STDOUT:   %Convert.type.275: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic]
+// CHECK:STDOUT:   %Convert.42e: %Convert.type.275 = struct_value () [symbolic]
+// CHECK:STDOUT:   %Self.as_type.40a: type = facet_access_type %Self.519 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.837: type = assoc_entity_type %ImplicitAs.type.d62 [symbolic]
+// CHECK:STDOUT:   %assoc0.02f: %ImplicitAs.assoc_type.837 = assoc_entity element0, imports.%Core.import_ref.1c7 [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.type.2d2: type = facet_type <@ImplicitAs, @ImplicitAs(%A.type)> [concrete]
+// CHECK:STDOUT:   %Convert.type.597: type = fn_type @Convert, @ImplicitAs(%A.type) [concrete]
+// CHECK:STDOUT:   %Convert.d1e: %Convert.type.597 = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.568: type = assoc_entity_type %ImplicitAs.type.2d2 [concrete]
+// CHECK:STDOUT:   %assoc0.e1d: %ImplicitAs.assoc_type.568 = assoc_entity element0, imports.%Core.import_ref.1c7 [concrete]
+// CHECK:STDOUT:   %assoc0.43d: %ImplicitAs.assoc_type.837 = assoc_entity element0, imports.%Core.import_ref.207 [symbolic]
 // CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
 // CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
 // CHECK:STDOUT:   %B.assoc_type: type = assoc_entity_type %B.type [concrete]
@@ -613,8 +624,16 @@ interface C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
 // CHECK:STDOUT:     import Core//default
 // CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.1: type = import_ref Core//default, loc3_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ff5 = import_ref Core//default, inst25 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.630: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = import_ref Core//default, loc4_35, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.43d)]
+// CHECK:STDOUT:   %Core.Convert = import_ref Core//default, Convert, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//default, loc3_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) = import_ref Core//default, inst25 [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Core.import_ref.1c7: @ImplicitAs.%Convert.type (%Convert.type.275) = import_ref Core//default, loc4_35, loaded [symbolic = @ImplicitAs.%Convert (constants.%Convert.42e)]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -631,18 +650,18 @@ interface C {
 // CHECK:STDOUT: interface @A {
 // CHECK:STDOUT:   %Self: %A.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.31d]
 // CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
-// CHECK:STDOUT:     %self.patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type) = binding_pattern self
-// CHECK:STDOUT:     %self.param_patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:     %self.patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type.01e) = binding_pattern self
+// CHECK:STDOUT:     %self.param_patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type.01e) = value_param_pattern %self.patt, call_param0
 // CHECK:STDOUT:     %return.patt: type = return_slot_pattern
 // CHECK:STDOUT:     %return.param_patt: type = out_param_pattern %return.patt, call_param1
 // CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %self.param: @F.%Self.as_type.loc6_14.1 (%Self.as_type) = value_param call_param0
-// CHECK:STDOUT:     %.loc6_14.1: type = splice_block %.loc6_14.2 [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type)] {
+// CHECK:STDOUT:     %self.param: @F.%Self.as_type.loc6_14.1 (%Self.as_type.01e) = value_param call_param0
+// CHECK:STDOUT:     %.loc6_14.1: type = splice_block %.loc6_14.2 [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type.01e)] {
 // CHECK:STDOUT:       %Self.ref: %A.type = name_ref Self, @A.%Self [symbolic = %Self (constants.%Self.31d)]
-// CHECK:STDOUT:       %Self.as_type.loc6_14.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type)]
-// CHECK:STDOUT:       %.loc6_14.2: type = converted %Self.ref, %Self.as_type.loc6_14.2 [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:       %Self.as_type.loc6_14.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type.01e)]
+// CHECK:STDOUT:       %.loc6_14.2: type = converted %Self.ref, %Self.as_type.loc6_14.2 [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type.01e)]
 // CHECK:STDOUT:     }
-// CHECK:STDOUT:     %self: @F.%Self.as_type.loc6_14.1 (%Self.as_type) = bind_name self, %self.param
+// CHECK:STDOUT:     %self: @F.%Self.as_type.loc6_14.1 (%Self.as_type.01e) = bind_name self, %self.param
 // CHECK:STDOUT:     %return.param: ref type = out_param call_param1
 // CHECK:STDOUT:     %return: ref type = return_slot %return.param
 // CHECK:STDOUT:   }
@@ -663,6 +682,7 @@ interface C {
 // CHECK:STDOUT:     %return.patt: <error> = return_slot_pattern
 // CHECK:STDOUT:     %return.param_patt: <error> = out_param_pattern %return.patt, call_param0
 // CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %.loc17: %A.type = converted @B.%Self, <error> [concrete = <error>]
 // CHECK:STDOUT:     %F.ref: <error> = name_ref F, <error> [concrete = <error>]
 // CHECK:STDOUT:     %return.param: ref <error> = out_param call_param0
 // CHECK:STDOUT:     %return: ref <error> = return_slot %return.param
@@ -677,11 +697,40 @@ interface C {
 // CHECK:STDOUT:   witness = (%G.decl)
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(imports.%Core.import_ref.5ab3ec.1: type) [from "core.carbon"] {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt (constants.%Dest.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.d62)]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic = %Convert.type (constants.%Convert.type.275)]
+// CHECK:STDOUT:   %Convert: @ImplicitAs.%Convert.type (%Convert.type.275) = struct_value () [symbolic = %Convert (constants.%Convert.42e)]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type.837)]
+// CHECK:STDOUT:   %assoc0: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = assoc_entity element0, imports.%Core.import_ref.1c7 [symbolic = %assoc0 (constants.%assoc0.02f)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   interface {
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Self = imports.%Core.import_ref.ff5
+// CHECK:STDOUT:     .Convert = imports.%Core.import_ref.630
+// CHECK:STDOUT:     witness = (imports.%Core.Convert)
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
 // CHECK:STDOUT: generic fn @F(@A.%Self: %A.type) {
 // CHECK:STDOUT:   %Self: %A.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.31d)]
-// CHECK:STDOUT:   %Self.as_type.loc6_14.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:   %Self.as_type.loc6_14.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc6_14.1 (constants.%Self.as_type.01e)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type.01e)]() -> type;
+// CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT:   fn[%self.param_patt: @F.%Self.as_type.loc6_14.1 (%Self.as_type)]() -> type;
+// CHECK:STDOUT: generic fn @Convert(imports.%Core.import_ref.5ab3ec.2: type, imports.%Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62)) [from "core.carbon"] {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.d62)]
+// CHECK:STDOUT:   %Self: %ImplicitAs.type.d62 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic = %Self.as_type (constants.%Self.as_type.40a)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Convert.%Self.as_type (%Self.as_type.40a)]() -> @Convert.%Dest (%Dest);
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: generic fn @G(@B.%Self: %B.type) {
@@ -690,12 +739,41 @@ interface C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @F(constants.%Self.31d) {
 // CHECK:STDOUT:   %Self => constants.%Self.31d
-// CHECK:STDOUT:   %Self.as_type.loc6_14.1 => constants.%Self.as_type
+// CHECK:STDOUT:   %Self.as_type.loc6_14.1 => constants.%Self.as_type.01e
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %Dest.patt => constants.%Dest
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(@Convert.%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Convert(constants.%Dest, constants.%Self.519) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.d62
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type.40a
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%A.type) {
+// CHECK:STDOUT:   %Dest => constants.%A.type
+// CHECK:STDOUT:   %Dest.patt => constants.%A.type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.2d2
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.597
+// CHECK:STDOUT:   %Convert => constants.%Convert.d1e
+// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.568
+// CHECK:STDOUT:   %assoc0 => constants.%assoc0.e1d
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @G(constants.%Self.783) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: --- fail_todo_call_with_compound_member_access.carbon
+// CHECK:STDOUT: --- call_with_compound_member_access.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {
 // CHECK:STDOUT:   %C.type: type = facet_type <@C> [concrete]
@@ -781,26 +859,32 @@ interface C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @G.%Self.as_type.loc8_14.1 (%Self.as_type) [symbolic = %require_complete (constants.%require_complete)]
-// CHECK:STDOUT:   %Self.as_wit.iface0.loc10_9.2: <witness> = facet_access_witness %Self, element0 [symbolic = %Self.as_wit.iface0.loc10_9.2 (constants.%Self.as_wit.iface0)]
-// CHECK:STDOUT:   %C.facet: %C.type = facet_value %Self.as_type.loc8_14.1, (%Self.as_wit.iface0.loc10_9.2) [symbolic = %C.facet (constants.%C.facet)]
-// CHECK:STDOUT:   %.loc10_9.2: type = fn_type_with_self_type constants.%F.type, %C.facet [symbolic = %.loc10_9.2 (constants.%.70a)]
-// CHECK:STDOUT:   %impl.elem0.loc10_9.2: @G.%.loc10_9.2 (%.70a) = impl_witness_access %Self.as_wit.iface0.loc10_9.2, element0 [symbolic = %impl.elem0.loc10_9.2 (constants.%impl.elem0)]
-// CHECK:STDOUT:   %specific_impl_fn.loc10_9.2: <specific function> = specific_impl_function %impl.elem0.loc10_9.2, @F(%C.facet) [symbolic = %specific_impl_fn.loc10_9.2 (constants.%specific_impl_fn)]
+// CHECK:STDOUT:   %Self.as_wit.iface0.loc9_9.2: <witness> = facet_access_witness %Self, element0 [symbolic = %Self.as_wit.iface0.loc9_9.2 (constants.%Self.as_wit.iface0)]
+// CHECK:STDOUT:   %C.facet: %C.type = facet_value %Self.as_type.loc8_14.1, (%Self.as_wit.iface0.loc9_9.2) [symbolic = %C.facet (constants.%C.facet)]
+// CHECK:STDOUT:   %.loc9_9.2: type = fn_type_with_self_type constants.%F.type, %C.facet [symbolic = %.loc9_9.2 (constants.%.70a)]
+// CHECK:STDOUT:   %impl.elem0.loc9_9.2: @G.%.loc9_9.2 (%.70a) = impl_witness_access %Self.as_wit.iface0.loc9_9.2, element0 [symbolic = %impl.elem0.loc9_9.2 (constants.%impl.elem0)]
+// CHECK:STDOUT:   %specific_impl_fn.loc9_9.2: <specific function> = specific_impl_function %impl.elem0.loc9_9.2, @F(%C.facet) [symbolic = %specific_impl_fn.loc9_9.2 (constants.%specific_impl_fn)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   fn[%self.param_patt: @G.%Self.as_type.loc8_14.1 (%Self.as_type)]() {
 // CHECK:STDOUT:   !entry:
+// CHECK:STDOUT:     %self.ref.loc9: @G.%Self.as_type.loc8_14.1 (%Self.as_type) = name_ref self, %self
+// CHECK:STDOUT:     %F.ref.loc9: %C.assoc_type = name_ref F, @C.%assoc0 [concrete = constants.%assoc0]
+// CHECK:STDOUT:     %Self.as_type.loc9: type = facet_access_type constants.%Self [symbolic = %Self.as_type.loc8_14.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:     %.loc9_9.1: type = converted constants.%Self, %Self.as_type.loc9 [symbolic = %Self.as_type.loc8_14.1 (constants.%Self.as_type)]
+// CHECK:STDOUT:     %Self.as_wit.iface0.loc9_9.1: <witness> = facet_access_witness constants.%Self, element0 [symbolic = %Self.as_wit.iface0.loc9_9.2 (constants.%Self.as_wit.iface0)]
+// CHECK:STDOUT:     %impl.elem0.loc9_9.1: @G.%.loc9_9.2 (%.70a) = impl_witness_access %Self.as_wit.iface0.loc9_9.1, element0 [symbolic = %impl.elem0.loc9_9.2 (constants.%impl.elem0)]
+// CHECK:STDOUT:     %bound_method.loc9_9: <bound method> = bound_method %self.ref.loc9, %impl.elem0.loc9_9.1
+// CHECK:STDOUT:     %specific_impl_fn.loc9_9.1: <specific function> = specific_impl_function %impl.elem0.loc9_9.1, @F(constants.%C.facet) [symbolic = %specific_impl_fn.loc9_9.2 (constants.%specific_impl_fn)]
+// CHECK:STDOUT:     %bound_method.loc9_12: <bound method> = bound_method %self.ref.loc9, %specific_impl_fn.loc9_9.1
+// CHECK:STDOUT:     %.loc9_12: init %empty_tuple.type = call %bound_method.loc9_12(%self.ref.loc9)
 // CHECK:STDOUT:     %self.ref.loc10: @G.%Self.as_type.loc8_14.1 (%Self.as_type) = name_ref self, %self
-// CHECK:STDOUT:     %F.ref.loc10: %C.assoc_type = name_ref F, @C.%assoc0 [concrete = constants.%assoc0]
-// CHECK:STDOUT:     %Self.as_type.loc10: type = facet_access_type constants.%Self [symbolic = %Self.as_type.loc8_14.1 (constants.%Self.as_type)]
-// CHECK:STDOUT:     %.loc10_9.1: type = converted constants.%Self, %Self.as_type.loc10 [symbolic = %Self.as_type.loc8_14.1 (constants.%Self.as_type)]
-// CHECK:STDOUT:     %Self.as_wit.iface0.loc10_9.1: <witness> = facet_access_witness constants.%Self, element0 [symbolic = %Self.as_wit.iface0.loc10_9.2 (constants.%Self.as_wit.iface0)]
-// CHECK:STDOUT:     %impl.elem0.loc10_9.1: @G.%.loc10_9.2 (%.70a) = impl_witness_access %Self.as_wit.iface0.loc10_9.1, element0 [symbolic = %impl.elem0.loc10_9.2 (constants.%impl.elem0)]
-// CHECK:STDOUT:     %bound_method.loc10_9: <bound method> = bound_method %self.ref.loc10, %impl.elem0.loc10_9.1
-// CHECK:STDOUT:     %specific_impl_fn.loc10_9.1: <specific function> = specific_impl_function %impl.elem0.loc10_9.1, @F(constants.%C.facet) [symbolic = %specific_impl_fn.loc10_9.2 (constants.%specific_impl_fn)]
-// CHECK:STDOUT:     %bound_method.loc10_12: <bound method> = bound_method %self.ref.loc10, %specific_impl_fn.loc10_9.1
-// CHECK:STDOUT:     %.loc10_12: init %empty_tuple.type = call %bound_method.loc10_12(%self.ref.loc10)
-// CHECK:STDOUT:     %self.ref.loc15: @G.%Self.as_type.loc8_14.1 (%Self.as_type) = name_ref self, %self
-// CHECK:STDOUT:     %F.ref.loc15: <error> = name_ref F, <error> [concrete = <error>]
+// CHECK:STDOUT:     %Self.as_wit.iface0.loc10: <witness> = facet_access_witness @C.%Self, element0 [symbolic = %Self.as_wit.iface0.loc9_9.2 (constants.%Self.as_wit.iface0)]
+// CHECK:STDOUT:     %impl.elem0.loc10: @G.%.loc9_9.2 (%.70a) = impl_witness_access %Self.as_wit.iface0.loc10, element0 [symbolic = %impl.elem0.loc9_9.2 (constants.%impl.elem0)]
+// CHECK:STDOUT:     %F.ref.loc10: @G.%.loc9_9.2 (%.70a) = name_ref F, %impl.elem0.loc10 [symbolic = %impl.elem0.loc9_9.2 (constants.%impl.elem0)]
+// CHECK:STDOUT:     %bound_method.loc10_9: <bound method> = bound_method %self.ref.loc10, %F.ref.loc10
+// CHECK:STDOUT:     %specific_impl_fn.loc10: <specific function> = specific_impl_function %F.ref.loc10, @F(constants.%C.facet) [symbolic = %specific_impl_fn.loc9_9.2 (constants.%specific_impl_fn)]
+// CHECK:STDOUT:     %bound_method.loc10_14: <bound method> = bound_method %self.ref.loc10, %specific_impl_fn.loc10
+// CHECK:STDOUT:     %.loc10: init %empty_tuple.type = call %bound_method.loc10_14(%self.ref.loc10)
 // CHECK:STDOUT:     return
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }