Support conversion from facet value to facet value (#5085)

When converting from a facet value (an instruction whose type is
FacetType), we require making a FacetAccessType
to have a type instruction when building the resulting FacetValue.
Otherwise, the conversion is the same for values of type TypeType, and
we relax the convert function to support either.

Corrects the test expectations for converting `Goat as Animal`, a facet
value of type FacetType, into `Eats`, a facet type of type TypeType.
This would be a promotion in the typish hierarchy which is incorrect. We
had an extra case in Convert that was handling this, and it's now
removed. `Animal`, a facet type, does still correctly convert into
`Eats`, a facet type, if `impl Animal as Eats` exists.

toolchain/check/context.h

@@ -188,7 +188,7 @@ class Context {
 
   // An ongoing impl lookup, used to ensure termination.
   struct ImplLookupStackEntry {
-    SemIR::ConstantId type_const_id;
+    SemIR::ConstantId query_self_const_id;
     SemIR::ConstantId query_facet_type_const_id;
     // The location of the impl being looked at for the stack entry.
     SemIR::InstId impl_loc = SemIR::InstId::None;

toolchain/check/convert.cpp

@@ -1028,67 +1028,52 @@ static auto PerformBuiltinConversion(Context& context, SemIR::LocId loc_id,
     // The value is a type or facet value, so it has a constant value. We get
     // that to unwrap things like NameRef and get to the underlying type or
     // facet value instruction so that we can use `TryGetAs`.
-    auto lookup_inst_id = sem_ir.constant_values().GetConstantInstId(value_id);
+    auto const_value_id = sem_ir.constant_values().GetConstantInstId(value_id);
 
     if (auto facet_access_type_inst =
-            sem_ir.insts().TryGetAs<SemIR::FacetAccessType>(lookup_inst_id)) {
+            sem_ir.insts().TryGetAs<SemIR::FacetAccessType>(const_value_id)) {
       // Conversion from a `FacetAccessType` to a `FacetValue` of the target
       // `FacetType` if the instruction in the `FacetAccessType` is of a
       // `FacetType` that satisfies the requirements of the target `FacetType`.
-      auto facet_value_inst_id = facet_access_type_inst->facet_value_inst_id;
-
       // If the `FacetType` exactly matches the target `FacetType` then we can
       // shortcut and use that value, and avoid impl lookup.
+      auto facet_value_inst_id = facet_access_type_inst->facet_value_inst_id;
       if (sem_ir.insts().Get(facet_value_inst_id).type_id() == target.type_id) {
         return facet_value_inst_id;
       }
-
-      auto lookup_result = LookupImplWitness(
-          context, loc_id, context.constant_values().Get(facet_value_inst_id),
-          context.types().GetConstantId(target.type_id));
-      if (lookup_result.has_value()) {
-        if (lookup_result.has_error_value()) {
-          return SemIR::ErrorInst::SingletonInstId;
-        } else {
-          return AddInst<SemIR::FacetValue>(
-              context, loc_id,
-              {.type_id = target.type_id,
-               .type_inst_id = lookup_inst_id,
-               .witnesses_block_id = lookup_result.inst_block_id()});
-        }
-      }
-    }
-
-    if (sem_ir.types().Is<SemIR::FacetType>(
-            sem_ir.insts().Get(lookup_inst_id).type_id())) {
-      // Conversion from a facet value to a `FacetValue` of the target
-      // `FacetType`. We move up to the higher typish level, and convert the
-      // `FacetType` (which is of type TypeType) directly. If the `FacetType`
-      // itself implements the target `FacetType` (`impl Iface1 as Iface2`),
-      // then we will produce a `FacetValue` of the target `FacetType`.
-      lookup_inst_id = context.types().GetInstId(
-          sem_ir.insts().Get(lookup_inst_id).type_id());
     }
 
-    if (sem_ir.types().Is<SemIR::TypeType>(
-            sem_ir.insts().Get(lookup_inst_id).type_id())) {
-      // Conversion from a type value (which has type `type`) to a facet value
-      // (which has type `FacetType`), if the type satisfies the requirements of
-      // the target `FacetType`, as determined by finding an impl witness. This
-      // binds the value to the `FacetType` with a `FacetValue`.
-      auto lookup_result = LookupImplWitness(
-          context, loc_id, sem_ir.constant_values().Get(lookup_inst_id),
-          sem_ir.types().GetConstantId(target.type_id));
-      if (lookup_result.has_value()) {
-        if (lookup_result.has_error_value()) {
-          return SemIR::ErrorInst::SingletonInstId;
+    // Conversion from a facet value (which has type `FacetType`) or a type
+    // value (which has type `TypeType`) to a facet value. We can do this if the
+    // type satisfies the requirements of the target `FacetType`, as determined
+    // by finding impl witnesses for the target FacetType.
+    auto lookup_result = LookupImplWitness(
+        context, loc_id, sem_ir.constant_values().Get(const_value_id),
+        sem_ir.types().GetConstantId(target.type_id));
+    if (lookup_result.has_value()) {
+      if (lookup_result.has_error_value()) {
+        return SemIR::ErrorInst::SingletonInstId;
+      } else {
+        // We bind the input value to the target `FacetType` with a
+        // `FacetValue`, which requires an instruction of type `TypeType`. So if
+        // we are converting from a facet value, we get its `type` via an extra
+        // `FacetAccessType` instruction.
+        auto type_inst_id = SemIR::InstId::None;
+        if (sem_ir.types().Is<SemIR::FacetType>(value_type_id)) {
+          type_inst_id =
+              AddInst(context, loc_id,
+                      SemIR::FacetAccessType{
+                          .type_id = SemIR::TypeType::SingletonTypeId,
+                          .facet_value_inst_id = const_value_id,
+                      });
         } else {
-          return AddInst<SemIR::FacetValue>(
-              context, loc_id,
-              {.type_id = target.type_id,
-               .type_inst_id = lookup_inst_id,
-               .witnesses_block_id = lookup_result.inst_block_id()});
+          type_inst_id = const_value_id;
         }
+        return AddInst<SemIR::FacetValue>(
+            context, loc_id,
+            {.type_id = target.type_id,
+             .type_inst_id = type_inst_id,
+             .witnesses_block_id = lookup_result.inst_block_id()});
       }
     }
   }

toolchain/check/impl_lookup.cpp

@@ -19,7 +19,7 @@
 namespace Carbon::Check {
 
 static auto FindAssociatedImportIRs(Context& context,
-                                    SemIR::ConstantId type_const_id,
+                                    SemIR::ConstantId query_self_const_id,
                                     SemIR::ConstantId query_facet_type_const_id)
     -> llvm::SmallVector<SemIR::ImportIRId> {
   llvm::SmallVector<SemIR::ImportIRId> result;
@@ -39,7 +39,7 @@ static auto FindAssociatedImportIRs(Context& context,
   };
 
   llvm::SmallVector<SemIR::InstId> worklist;
-  worklist.push_back(context.constant_values().GetInstId(type_const_id));
+  worklist.push_back(context.constant_values().GetInstId(query_self_const_id));
   worklist.push_back(
       context.constant_values().GetInstId(query_facet_type_const_id));
 
@@ -121,7 +121,7 @@ static auto FindAssociatedImportIRs(Context& context,
 static auto FindAndDiagnoseImplLookupCycle(
     Context& context,
     const llvm::SmallVector<Context::ImplLookupStackEntry>& stack,
-    SemIR::LocId loc_id, SemIR::ConstantId type_const_id,
+    SemIR::LocId loc_id, SemIR::ConstantId query_self_const_id,
     SemIR::ConstantId query_facet_type_const_id) -> bool {
   // Deduction of the interface parameters can do further impl lookups, and we
   // need to ensure we terminate.
@@ -136,7 +136,7 @@ static auto FindAndDiagnoseImplLookupCycle(
   // complexity of the types on the top of (or throughout?) the stack:
   // https://docs.carbon-lang.dev/docs/design/generics/details.html#termination-rule
   for (auto [i, entry] : llvm::enumerate(stack)) {
-    if (entry.type_const_id == type_const_id &&
+    if (entry.query_self_const_id == query_self_const_id &&
         entry.query_facet_type_const_id == query_facet_type_const_id) {
       auto facet_type_type_id =
           context.types().GetTypeIdForTypeConstantId(query_facet_type_const_id);
@@ -145,7 +145,7 @@ static auto FindAndDiagnoseImplLookupCycle(
                         SemIR::TypeId, SemIR::TypeId);
       auto builder = context.emitter().Build(
           loc_id, ImplLookupCycle, facet_type_type_id,
-          context.types().GetTypeIdForTypeConstantId(type_const_id));
+          context.types().GetTypeIdForTypeConstantId(query_self_const_id));
       for (const auto& active_entry : llvm::drop_begin(stack, i)) {
         if (active_entry.impl_loc.has_value()) {
           CARBON_DIAGNOSTIC(ImplLookupCycleNote, Note,
@@ -179,7 +179,8 @@ static auto GetInterfacesFromConstantId(
 }
 
 static auto GetWitnessIdForImpl(
-    Context& context, SemIR::LocId loc_id, SemIR::ConstantId type_const_id,
+    Context& context, SemIR::LocId loc_id,
+    SemIR::ConstantId query_self_const_id,
     const SemIR::CompleteFacetType::RequiredInterface& interface,
     SemIR::ImplId impl_id) -> SemIR::InstId {
   // The impl may have generic arguments, in which case we need to deduce them
@@ -196,7 +197,7 @@ static auto GetWitnessIdForImpl(
                               {.self_id = impl.self_id,
                                .generic_id = impl.generic_id,
                                .specific_id = impl.interface.specific_id},
-                              type_const_id, interface.specific_id);
+                              query_self_const_id, interface.specific_id);
       if (!specific_id.has_value()) {
         return SemIR::InstId::None;
       }
@@ -210,7 +211,7 @@ static auto GetWitnessIdForImpl(
   // `impl T as ...` for some other type `T` and should not be considered.
   auto deduced_self_const_id = SemIR::GetConstantValueInSpecific(
       context.sem_ir(), specific_id, impl.self_id);
-  if (type_const_id != deduced_self_const_id) {
+  if (query_self_const_id != deduced_self_const_id) {
     return SemIR::InstId::None;
   }
 
@@ -277,8 +278,8 @@ static auto FindWitnessInFacet(
     auto complete_facet_type_id = RequireCompleteFacetType(
         context, facet_type_id, loc_id, *facet_type_inst,
         [&]() -> DiagnosticBuilder {
-          // TODO: Find test that triggers this code path.
-          CARBON_FATAL("impl lookup for with incomplete facet type");
+          context.TODO(loc_id, "impl lookup on incomplete facet type");
+          return context.emitter().BuildSuppressed();
         });
     if (complete_facet_type_id.has_value()) {
       const auto& complete_facet_type =
@@ -301,7 +302,8 @@ static auto FindWitnessInFacet(
 }
 
 static auto FindWitnessInImpls(
-    Context& context, SemIR::LocId loc_id, SemIR::ConstantId type_const_id,
+    Context& context, SemIR::LocId loc_id,
+    SemIR::ConstantId query_self_const_id,
     const SemIR::SpecificInterface& specific_interface) -> SemIR::InstId {
   auto& stack = context.impl_lookup_stack();
   // TODO: Build this candidate list by matching against type structures to
@@ -344,8 +346,8 @@ static auto FindWitnessInImpls(
     stack.back().impl_loc = loc_inst_id;
     // NOTE: GetWitnessIdForImpl() does deduction, which can cause new impls to
     // be imported, invalidating any pointer into `context.impls()`.
-    auto result_witness_id = GetWitnessIdForImpl(context, loc_id, type_const_id,
-                                                 specific_interface, impl_id);
+    auto result_witness_id = GetWitnessIdForImpl(
+        context, loc_id, query_self_const_id, specific_interface, impl_id);
     if (result_witness_id.has_value()) {
       // We found a matching impl; don't keep looking for this interface.
       return result_witness_id;
@@ -355,14 +357,28 @@ static auto FindWitnessInImpls(
 }
 
 auto LookupImplWitness(Context& context, SemIR::LocId loc_id,
-                       SemIR::ConstantId type_const_id,
+                       SemIR::ConstantId query_self_const_id,
                        SemIR::ConstantId query_facet_type_const_id)
     -> SemIR::InstBlockIdOrError {
-  if (type_const_id == SemIR::ErrorInst::SingletonConstantId ||
+  if (query_self_const_id == SemIR::ErrorInst::SingletonConstantId ||
       query_facet_type_const_id == SemIR::ErrorInst::SingletonConstantId) {
     return SemIR::InstBlockIdOrError::MakeError();
   }
-  auto import_irs = FindAssociatedImportIRs(context, type_const_id,
+
+  {
+    // The query self value is a type value or a facet value.
+    auto query_self_type_id =
+        context.insts()
+            .Get(context.constant_values().GetInstId(query_self_const_id))
+            .type_id();
+    CARBON_CHECK(context.types().Is<SemIR::TypeType>(query_self_type_id) ||
+                 context.types().Is<SemIR::FacetType>(query_self_type_id));
+    // The query facet type value is indeed a facet type.
+    CARBON_CHECK(context.insts().Is<SemIR::FacetType>(
+        context.constant_values().GetInstId(query_facet_type_const_id)));
+  }
+
+  auto import_irs = FindAssociatedImportIRs(context, query_self_const_id,
                                             query_facet_type_const_id);
   for (auto import_ir : import_irs) {
     // TODO: Instead of importing all impls, only import ones that are in some
@@ -376,7 +392,7 @@ auto LookupImplWitness(Context& context, SemIR::LocId loc_id,
   }
 
   if (FindAndDiagnoseImplLookupCycle(context, context.impl_lookup_stack(),
-                                     loc_id, type_const_id,
+                                     loc_id, query_self_const_id,
                                      query_facet_type_const_id)) {
     return SemIR::InstBlockIdOrError::MakeError();
   }
@@ -396,20 +412,20 @@ auto LookupImplWitness(Context& context, SemIR::LocId loc_id,
 
   auto& stack = context.impl_lookup_stack();
   stack.push_back({
-      .type_const_id = type_const_id,
+      .query_self_const_id = query_self_const_id,
       .query_facet_type_const_id = query_facet_type_const_id,
   });
   // We need to find a witness for each interface in `interfaces`. We return
   // them in the same order as they are found in the `CompleteFacetType`, which
   // is the same order as in `interfaces` here.
   for (const auto& interface : interfaces) {
-    // TODO: Since both `interfaces` and `type_const_id` are sorted lists, do an
-    // O(N+M) merge instead of O(N*M) nested loops.
+    // TODO: Since both `interfaces` and `query_self_const_id` are sorted lists,
+    // do an O(N+M) merge instead of O(N*M) nested loops.
     auto result_witness_id =
-        FindWitnessInFacet(context, loc_id, type_const_id, interface);
+        FindWitnessInFacet(context, loc_id, query_self_const_id, interface);
     if (!result_witness_id.has_value()) {
       result_witness_id =
-          FindWitnessInImpls(context, loc_id, type_const_id, interface);
+          FindWitnessInImpls(context, loc_id, query_self_const_id, interface);
     }
     if (result_witness_id.has_value()) {
       result_witness_ids.push_back(result_witness_id);
@@ -424,8 +440,8 @@ auto LookupImplWitness(Context& context, SemIR::LocId loc_id,
   // `interface_const_id`.
 
   // All interfaces in the query facet type must have been found to be available
-  // through some impl (TODO: or directly on the type itself if `type_const_id`
-  // is a facet type).
+  // through some impl, or directly on the value's facet type if
+  // `query_self_const_id` is a facet value.
   if (result_witness_ids.size() != interfaces.size()) {
     return SemIR::InstBlockId::None;
   }

toolchain/check/impl_lookup.h

@@ -10,9 +10,12 @@
 
 namespace Carbon::Check {
 
-// Looks up the witnesses to use for a particular type and a facet type naming a
-// set of interfaces required to be implemented for that type, as well as
-// possible constraints on those interfaces.
+// Looks up the witnesses to use for a type value or facet value, and a facet
+// type naming a set of interfaces required to be implemented for that type, as
+// well as possible constraints on those interfaces.
+//
+// N.B. In the future, `TypeType` will become a facet type, at which point type
+// values will also be facet values.
 //
 // The return value is one of:
 // - An InstBlockId value, containing an `ImplWitness` instruction for each
@@ -28,7 +31,7 @@ namespace Carbon::Check {
 // - An error value, indicating the program is invalid and a diagonstic has been
 //   produced, either in this function or before.
 auto LookupImplWitness(Context& context, SemIR::LocId loc_id,
-                       SemIR::ConstantId type_const_id,
+                       SemIR::ConstantId query_self_const_id,
                        SemIR::ConstantId query_facet_type_const_id)
     -> SemIR::InstBlockIdOrError;
 

toolchain/check/testdata/builtin_conversions/min_prelude/convert_facet_value_to_facet_value.carbon

@@ -0,0 +1,1126 @@
+// 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/min_prelude/facet_types.carbon
+// EXTRA-ARGS: --custom-core
+//
+// AUTOUPDATE
+// TIP: To test this file alone, run:
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/builtin_conversions/min_prelude/convert_facet_value_to_facet_value.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/builtin_conversions/min_prelude/convert_facet_value_to_facet_value.carbon
+
+// --- convert_facet_value_to_facet_value.carbon
+library "[[@TEST_NAME]]";
+
+interface Eats {}
+interface Animal {}
+
+// TODO: This may be rejected in the future.
+// https://github.com/carbon-language/carbon-lang/issues/4853
+impl Animal as Eats {}
+
+fn Feed(e:! Eats) {}
+
+fn F() {
+  Feed(Animal);
+}
+
+// --- fail_facet_value_to_facet_type.carbon
+library "[[@TEST_NAME]]";
+
+interface Eats {}
+interface Animal {}
+
+// TODO: This may be rejected in the future.
+// https://github.com/carbon-language/carbon-lang/issues/4853
+impl Animal as Eats {}
+
+fn Feed(e:! Eats) {}
+
+class Goat {}
+impl Goat as Animal {}
+
+fn F() {
+  // CHECK:STDERR: fail_facet_value_to_facet_type.carbon:[[@LINE+10]]:3: error: cannot implicitly convert type `Goat as Animal` that implements `Animal` into type implementing `Eats` [ConversionFailureFacetToFacet]
+  // CHECK:STDERR:   Feed(Goat as Animal);
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_facet_value_to_facet_type.carbon:[[@LINE+7]]:3: note: type `Animal` does not implement interface `Core.ImplicitAs(Eats)` [MissingImplInMemberAccessNote]
+  // CHECK:STDERR:   Feed(Goat as Animal);
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_facet_value_to_facet_type.carbon:[[@LINE-12]]:9: note: initializing generic parameter `e` declared here [InitializingGenericParam]
+  // CHECK:STDERR: fn Feed(e:! Eats) {}
+  // CHECK:STDERR:         ^
+  // CHECK:STDERR:
+  Feed(Goat as Animal);
+}
+
+// --- fail_convert_multi_interface_facet_value_to_facet_value.carbon
+library "[[@TEST_NAME]]";
+
+interface Eats {}
+interface Animal {}
+interface Climbs {}
+
+// TODO: This may be rejected in the future.
+// https://github.com/carbon-language/carbon-lang/issues/4853
+impl Animal as Eats {}
+
+fn Feed(e:! Eats) {}
+
+class Goat {}
+impl Goat as Animal {}
+impl Goat as Climbs {}
+
+// These are expected to fail:
+// https://github.com/carbon-language/carbon-lang/issues/4853#issuecomment-2707673344
+fn F() {
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE+10]]:3: error: cannot implicitly convert type `Goat as Animal & Climbs` that implements `Animal & Climbs` into type implementing `Eats` [ConversionFailureFacetToFacet]
+  // CHECK:STDERR:   Feed(Goat as (Animal & Climbs));
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE+7]]:3: note: type `Animal & Climbs` does not implement interface `Core.ImplicitAs(Eats)` [MissingImplInMemberAccessNote]
+  // CHECK:STDERR:   Feed(Goat as (Animal & Climbs));
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE-15]]:9: note: initializing generic parameter `e` declared here [InitializingGenericParam]
+  // CHECK:STDERR: fn Feed(e:! Eats) {}
+  // CHECK:STDERR:         ^
+  // CHECK:STDERR:
+  Feed(Goat as (Animal & Climbs));
+
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE+10]]:3: error: cannot implicitly convert type `Animal & Climbs` into type implementing `Eats` [ConversionFailureTypeToFacet]
+  // CHECK:STDERR:   Feed(Animal & Climbs);
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE+7]]:3: note: type `type` does not implement interface `Core.ImplicitAs(Eats)` [MissingImplInMemberAccessNote]
+  // CHECK:STDERR:   Feed(Animal & Climbs);
+  // CHECK:STDERR:   ^~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_convert_multi_interface_facet_value_to_facet_value.carbon:[[@LINE-27]]:9: note: initializing generic parameter `e` declared here [InitializingGenericParam]
+  // CHECK:STDERR: fn Feed(e:! Eats) {}
+  // CHECK:STDERR:         ^
+  // CHECK:STDERR:
+  Feed(Animal & Climbs);
+}
+
+// CHECK:STDOUT: --- convert_facet_value_to_facet_value.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %Eats.type: type = facet_type <@Eats> [concrete]
+// CHECK:STDOUT:   %Self.1b5: %Eats.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Animal.type: type = facet_type <@Animal> [concrete]
+// CHECK:STDOUT:   %Self.fd4: %Animal.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness () [concrete]
+// CHECK:STDOUT:   %e: %Eats.type = bind_symbolic_name e, 0 [symbolic]
+// CHECK:STDOUT:   %e.patt: %Eats.type = symbolic_binding_pattern e, 0 [symbolic]
+// CHECK:STDOUT:   %Feed.type: type = fn_type @Feed [concrete]
+// CHECK:STDOUT:   %Feed: %Feed.type = struct_value () [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %Eats.facet: %Eats.type = facet_value %Animal.type, (%impl_witness) [concrete]
+// CHECK:STDOUT:   %Feed.specific_fn: <specific function> = specific_function %Feed, @Feed(%Eats.facet) [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     import Core//prelude
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .Core = imports.%Core
+// CHECK:STDOUT:     .Eats = %Eats.decl
+// CHECK:STDOUT:     .Animal = %Animal.decl
+// CHECK:STDOUT:     .Feed = %Feed.decl
+// CHECK:STDOUT:     .F = %F.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %Eats.decl: type = interface_decl @Eats [concrete = constants.%Eats.type] {} {}
+// CHECK:STDOUT:   %Animal.decl: type = interface_decl @Animal [concrete = constants.%Animal.type] {} {}
+// CHECK:STDOUT:   impl_decl @impl [concrete] {} {
+// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness () [concrete = constants.%impl_witness]
+// CHECK:STDOUT:   %Feed.decl: %Feed.type = fn_decl @Feed [concrete = constants.%Feed] {
+// CHECK:STDOUT:     %e.patt.loc10_9.1: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc10_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:     %e.loc10_9.1: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc10_9.2 (constants.%e)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Eats {
+// CHECK:STDOUT:   %Self: %Eats.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.1b5]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Animal {
+// CHECK:STDOUT:   %Self: %Animal.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.fd4]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: impl @impl: %Animal.ref as %Eats.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Feed(%e.loc10_9.1: %Eats.type) {
+// CHECK:STDOUT:   %e.loc10_9.2: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc10_9.2 (constants.%e)]
+// CHECK:STDOUT:   %e.patt.loc10_9.2: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc10_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn(%e.patt.loc10_9.1: %Eats.type) {
+// CHECK:STDOUT:   !entry:
+// CHECK:STDOUT:     return
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   %Feed.ref: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
+// CHECK:STDOUT:   %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   %Eats.facet: %Eats.type = facet_value constants.%Animal.type, (constants.%impl_witness) [concrete = constants.%Eats.facet]
+// CHECK:STDOUT:   %.loc13: %Eats.type = converted %Animal.ref, %Eats.facet [concrete = constants.%Eats.facet]
+// CHECK:STDOUT:   %Feed.specific_fn: <specific function> = specific_function %Feed.ref, @Feed(constants.%Eats.facet) [concrete = constants.%Feed.specific_fn]
+// CHECK:STDOUT:   %Feed.call: init %empty_tuple.type = call %Feed.specific_fn()
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Feed(constants.%e) {
+// CHECK:STDOUT:   %e.loc10_9.2 => constants.%e
+// CHECK:STDOUT:   %e.patt.loc10_9.2 => constants.%e
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Feed(constants.%Eats.facet) {
+// CHECK:STDOUT:   %e.loc10_9.2 => constants.%Eats.facet
+// CHECK:STDOUT:   %e.patt.loc10_9.2 => constants.%Eats.facet
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_facet_value_to_facet_type.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %Eats.type: type = facet_type <@Eats> [concrete]
+// CHECK:STDOUT:   %Self.1b5: %Eats.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Animal.type: type = facet_type <@Animal> [concrete]
+// CHECK:STDOUT:   %Self.fd4: %Animal.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %impl_witness.1bc: <witness> = impl_witness () [concrete]
+// CHECK:STDOUT:   %e: %Eats.type = bind_symbolic_name e, 0 [symbolic]
+// CHECK:STDOUT:   %e.patt: %Eats.type = symbolic_binding_pattern e, 0 [symbolic]
+// CHECK:STDOUT:   %Feed.type: type = fn_type @Feed [concrete]
+// CHECK:STDOUT:   %Feed: %Feed.type = struct_value () [concrete]
+// CHECK:STDOUT:   %Goat: type = class_type @Goat [concrete]
+// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %Animal.facet: %Animal.type = facet_value %Goat, (%impl_witness.1bc) [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.af9: type = facet_type <@ImplicitAs, @ImplicitAs(%Eats.type)> [concrete]
+// CHECK:STDOUT:   %Convert.type.9a9: type = fn_type @Convert, @ImplicitAs(%Eats.type) [concrete]
+// CHECK:STDOUT:   %Convert.35d: %Convert.type.9a9 = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.9a7: type = assoc_entity_type %ImplicitAs.type.af9 [concrete]
+// CHECK:STDOUT:   %assoc0.ceb: %ImplicitAs.assoc_type.9a7 = 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:   %BitAnd.type: type = facet_type <@BitAnd> [concrete]
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic]
+// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic]
+// CHECK:STDOUT:   %impl_witness.b81: <witness> = impl_witness (imports.%Core.import_ref.bd4), @impl.f92(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type: type = fn_type @Op, @impl.f92(%T) [symbolic]
+// CHECK:STDOUT:   %Op: %Op.type = struct_value () [symbolic]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %T [symbolic]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
+// CHECK:STDOUT:     import Core//prelude
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.1: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ff5 = import_ref Core//prelude, inst65 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.630: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.43d)]
+// CHECK:STDOUT:   %Core.Convert = import_ref Core//prelude, Convert, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) = import_ref Core//prelude, inst65 [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Core.import_ref.1c7: @ImplicitAs.%Convert.type (%Convert.type.275) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%Convert (constants.%Convert.42e)]
+// CHECK:STDOUT:   %Core.import_ref.ad0 = import_ref Core//prelude, inst100 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.3bf = import_ref Core//prelude, loc18_41, unloaded
+// CHECK:STDOUT:   %Core.Op = import_ref Core//prelude, Op, unloaded
+// CHECK:STDOUT:   %Core.import_ref.f80 = import_ref Core//prelude, loc21_36, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.3: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.583: type = import_ref Core//prelude, loc21_24, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.9c1: type = import_ref Core//prelude, loc21_29, loaded [concrete = constants.%BitAnd.type]
+// CHECK:STDOUT:   %Core.import_ref.bd4 = import_ref Core//prelude, loc22_42, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.4: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .Core = imports.%Core
+// CHECK:STDOUT:     .Eats = %Eats.decl
+// CHECK:STDOUT:     .Animal = %Animal.decl
+// CHECK:STDOUT:     .Feed = %Feed.decl
+// CHECK:STDOUT:     .Goat = %Goat.decl
+// CHECK:STDOUT:     .F = %F.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %Eats.decl: type = interface_decl @Eats [concrete = constants.%Eats.type] {} {}
+// CHECK:STDOUT:   %Animal.decl: type = interface_decl @Animal [concrete = constants.%Animal.type] {} {}
+// CHECK:STDOUT:   impl_decl @impl.d75 [concrete] {} {
+// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness.loc8: <witness> = impl_witness () [concrete = constants.%impl_witness.1bc]
+// CHECK:STDOUT:   %Feed.decl: %Feed.type = fn_decl @Feed [concrete = constants.%Feed] {
+// CHECK:STDOUT:     %e.patt.loc10_9.1: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc10_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:     %e.loc10_9.1: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc10_9.2 (constants.%e)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Goat.decl: type = class_decl @Goat [concrete = constants.%Goat] {} {}
+// CHECK:STDOUT:   impl_decl @impl.27e [concrete] {} {
+// CHECK:STDOUT:     %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
+// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness.loc13: <witness> = impl_witness () [concrete = constants.%impl_witness.1bc]
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Eats {
+// CHECK:STDOUT:   %Self: %Eats.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.1b5]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Animal {
+// CHECK:STDOUT:   %Self: %Animal.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.fd4]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(imports.%Core.import_ref.5ab3ec.1: type) [from "toolchain/testing/min_prelude/facet_types.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: interface @BitAnd [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = imports.%Core.import_ref.ad0
+// CHECK:STDOUT:   .Op = imports.%Core.import_ref.3bf
+// CHECK:STDOUT:   witness = (imports.%Core.Op)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: impl @impl.d75: %Animal.ref as %Eats.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness.loc8
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: impl @impl.27e: %Goat.ref as %Animal.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness.loc13
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic impl @impl.f92(imports.%Core.import_ref.5ab3ec.3: type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt (constants.%T.patt)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (imports.%Core.import_ref.bd4), @impl.f92(%T) [symbolic = %impl_witness (constants.%impl_witness.b81)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Op.type: type = fn_type @Op, @impl.f92(%T) [symbolic = %Op.type (constants.%Op.type)]
+// CHECK:STDOUT:   %Op: @impl.f92.%Op.type (%Op.type) = struct_value () [symbolic = %Op (constants.%Op)]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @impl.f92.%T (%T) [symbolic = %require_complete (constants.%require_complete)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   impl: imports.%Core.import_ref.583 as imports.%Core.import_ref.9c1 {
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     witness = imports.%Core.import_ref.f80
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: class @Goat {
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type]
+// CHECK:STDOUT:   complete_type_witness = %complete_type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = constants.%Goat
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Feed(%e.loc10_9.1: %Eats.type) {
+// CHECK:STDOUT:   %e.loc10_9.2: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc10_9.2 (constants.%e)]
+// CHECK:STDOUT:   %e.patt.loc10_9.2: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc10_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn(%e.patt.loc10_9.1: %Eats.type) {
+// CHECK:STDOUT:   !entry:
+// CHECK:STDOUT:     return
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   %Feed.ref: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
+// CHECK:STDOUT:   %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
+// CHECK:STDOUT:   %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   %Animal.facet: %Animal.type = facet_value constants.%Goat, (constants.%impl_witness.1bc) [concrete = constants.%Animal.facet]
+// CHECK:STDOUT:   %.loc26_13: %Animal.type = converted %Goat.ref, %Animal.facet [concrete = constants.%Animal.facet]
+// CHECK:STDOUT:   %.loc26_22: %Eats.type = converted %.loc26_13, <error> [concrete = <error>]
+// CHECK:STDOUT:   return
+// 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 "toolchain/testing/min_prelude/facet_types.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 @Op(imports.%Core.import_ref.5ab3ec.4: type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.%T (%T)](%other.param_patt: @Op.%T (%T)) -> @Op.%T (%T) = "type.and";
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Feed(constants.%e) {
+// CHECK:STDOUT:   %e.loc10_9.2 => constants.%e
+// CHECK:STDOUT:   %e.patt.loc10_9.2 => constants.%e
+// 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
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%Eats.type) {
+// CHECK:STDOUT:   %Dest => constants.%Eats.type
+// CHECK:STDOUT:   %Dest.patt => constants.%Eats.type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.af9
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.9a9
+// CHECK:STDOUT:   %Convert => constants.%Convert.35d
+// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.9a7
+// CHECK:STDOUT:   %assoc0 => constants.%assoc0.ceb
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl.f92(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT:   %T.patt => constants.%T
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.b81
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl.f92(%T) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_convert_multi_interface_facet_value_to_facet_value.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %Eats.type: type = facet_type <@Eats> [concrete]
+// CHECK:STDOUT:   %Self.1b5: %Eats.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Animal.type: type = facet_type <@Animal> [concrete]
+// CHECK:STDOUT:   %Self.fd4: %Animal.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Climbs.type: type = facet_type <@Climbs> [concrete]
+// CHECK:STDOUT:   %Self.fcc: %Climbs.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %impl_witness.1bc: <witness> = impl_witness () [concrete]
+// CHECK:STDOUT:   %e: %Eats.type = bind_symbolic_name e, 0 [symbolic]
+// CHECK:STDOUT:   %e.patt: %Eats.type = symbolic_binding_pattern e, 0 [symbolic]
+// CHECK:STDOUT:   %Feed.type: type = fn_type @Feed [concrete]
+// CHECK:STDOUT:   %Feed: %Feed.type = struct_value () [concrete]
+// CHECK:STDOUT:   %Goat: type = class_type @Goat [concrete]
+// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
+// CHECK:STDOUT:   %complete_type.357: <witness> = complete_type_witness %empty_struct_type [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %BitAnd.type: type = facet_type <@BitAnd> [concrete]
+// CHECK:STDOUT:   %Self.25f: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %BitAnd.assoc_type: type = assoc_entity_type %BitAnd.type [concrete]
+// CHECK:STDOUT:   %assoc0.a63: %BitAnd.assoc_type = assoc_entity element0, imports.%Core.import_ref.a93 [concrete]
+// CHECK:STDOUT:   %Op.type.27a: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %Self.as_type.19f: type = facet_access_type %Self.25f [symbolic]
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic]
+// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic]
+// CHECK:STDOUT:   %impl_witness.db8: <witness> = impl_witness (imports.%Core.import_ref.1e6), @impl.f92(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type.f99: type = fn_type @Op.2, @impl.f92(%T) [symbolic]
+// CHECK:STDOUT:   %Op.05a: %Op.type.f99 = struct_value () [symbolic]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %T [symbolic]
+// CHECK:STDOUT:   %impl_witness.3ea: <witness> = impl_witness (imports.%Core.import_ref.1e6), @impl.f92(type) [concrete]
+// CHECK:STDOUT:   %impl_witness.b81: <witness> = impl_witness (imports.%Core.import_ref.bd4), @impl.f92(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type.eb8: type = fn_type @Op.2, @impl.f92(type) [concrete]
+// CHECK:STDOUT:   %Op.444: %Op.type.eb8 = struct_value () [concrete]
+// CHECK:STDOUT:   %complete_type.473: <witness> = complete_type_witness type [concrete]
+// CHECK:STDOUT:   %BitAnd.facet: %BitAnd.type = facet_value type, (%impl_witness.3ea) [concrete]
+// CHECK:STDOUT:   %.2ac: type = fn_type_with_self_type %Op.type.27a, %BitAnd.facet [concrete]
+// CHECK:STDOUT:   %Op.bound: <bound method> = bound_method %Animal.type, %Op.444 [concrete]
+// CHECK:STDOUT:   %Op.specific_fn: <specific function> = specific_function %Op.444, @Op.2(type) [concrete]
+// CHECK:STDOUT:   %bound_method: <bound method> = bound_method %Animal.type, %Op.specific_fn [concrete]
+// CHECK:STDOUT:   %facet_type: type = facet_type <@Animal & @Climbs> [concrete]
+// CHECK:STDOUT:   %facet_value: %facet_type = facet_value %Goat, (%impl_witness.1bc, %impl_witness.1bc) [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.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.af9: type = facet_type <@ImplicitAs, @ImplicitAs(%Eats.type)> [concrete]
+// CHECK:STDOUT:   %Convert.type.9a9: type = fn_type @Convert, @ImplicitAs(%Eats.type) [concrete]
+// CHECK:STDOUT:   %Convert.35d: %Convert.type.9a9 = struct_value () [concrete]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type.9a7: type = assoc_entity_type %ImplicitAs.type.af9 [concrete]
+// CHECK:STDOUT:   %assoc0.ceb: %ImplicitAs.assoc_type.9a7 = 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: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     .BitAnd = %Core.BitAnd
+// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
+// CHECK:STDOUT:     import Core//prelude
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.ad0 = import_ref Core//prelude, inst100 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.08d: %BitAnd.assoc_type = import_ref Core//prelude, loc18_41, loaded [concrete = constants.%assoc0.a63]
+// CHECK:STDOUT:   %Core.Op = import_ref Core//prelude, Op, unloaded
+// CHECK:STDOUT:   %Core.import_ref.040: %BitAnd.type = import_ref Core//prelude, inst100 [no loc], loaded [symbolic = constants.%Self.25f]
+// CHECK:STDOUT:   %Core.import_ref.51c: <witness> = import_ref Core//prelude, loc21_36, loaded [symbolic = @impl.f92.%impl_witness (constants.%impl_witness.b81)]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.1: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.583: type = import_ref Core//prelude, loc21_24, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.9c1: type = import_ref Core//prelude, loc21_29, loaded [concrete = constants.%BitAnd.type]
+// CHECK:STDOUT:   %Core.import_ref.1e6: @impl.f92.%Op.type (%Op.type.f99) = import_ref Core//prelude, loc22_42, loaded [symbolic = @impl.f92.%Op (constants.%Op.05a)]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.f92.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.3: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ff5 = import_ref Core//prelude, inst65 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.630: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.43d)]
+// CHECK:STDOUT:   %Core.Convert = import_ref Core//prelude, Convert, unloaded
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.4: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
+// CHECK:STDOUT:   %Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) = import_ref Core//prelude, inst65 [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.519)]
+// CHECK:STDOUT:   %Core.import_ref.1c7: @ImplicitAs.%Convert.type (%Convert.type.275) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%Convert (constants.%Convert.42e)]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .Core = imports.%Core
+// CHECK:STDOUT:     .Eats = %Eats.decl
+// CHECK:STDOUT:     .Animal = %Animal.decl
+// CHECK:STDOUT:     .Climbs = %Climbs.decl
+// CHECK:STDOUT:     .Feed = %Feed.decl
+// CHECK:STDOUT:     .Goat = %Goat.decl
+// CHECK:STDOUT:     .F = %F.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %Eats.decl: type = interface_decl @Eats [concrete = constants.%Eats.type] {} {}
+// CHECK:STDOUT:   %Animal.decl: type = interface_decl @Animal [concrete = constants.%Animal.type] {} {}
+// CHECK:STDOUT:   %Climbs.decl: type = interface_decl @Climbs [concrete = constants.%Climbs.type] {} {}
+// CHECK:STDOUT:   impl_decl @impl.d75 [concrete] {} {
+// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness.loc9: <witness> = impl_witness () [concrete = constants.%impl_witness.1bc]
+// CHECK:STDOUT:   %Feed.decl: %Feed.type = fn_decl @Feed [concrete = constants.%Feed] {
+// CHECK:STDOUT:     %e.patt.loc11_9.1: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc11_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
+// CHECK:STDOUT:     %e.loc11_9.1: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc11_9.2 (constants.%e)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Goat.decl: type = class_decl @Goat [concrete = constants.%Goat] {} {}
+// CHECK:STDOUT:   impl_decl @impl.27e [concrete] {} {
+// CHECK:STDOUT:     %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
+// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness.loc14: <witness> = impl_witness () [concrete = constants.%impl_witness.1bc]
+// CHECK:STDOUT:   impl_decl @impl.aad [concrete] {} {
+// CHECK:STDOUT:     %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
+// CHECK:STDOUT:     %Climbs.ref: type = name_ref Climbs, file.%Climbs.decl [concrete = constants.%Climbs.type]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness.loc15: <witness> = impl_witness () [concrete = constants.%impl_witness.1bc]
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Eats {
+// CHECK:STDOUT:   %Self: %Eats.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.1b5]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Animal {
+// CHECK:STDOUT:   %Self: %Animal.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.fd4]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @Climbs {
+// CHECK:STDOUT:   %Self: %Climbs.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.fcc]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @BitAnd [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = imports.%Core.import_ref.ad0
+// CHECK:STDOUT:   .Op = imports.%Core.import_ref.08d
+// CHECK:STDOUT:   witness = (imports.%Core.Op)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(imports.%Core.import_ref.5ab3ec.3: type) [from "toolchain/testing/min_prelude/facet_types.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: impl @impl.d75: %Animal.ref as %Eats.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness.loc9
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: impl @impl.27e: %Goat.ref as %Animal.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness.loc14
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: impl @impl.aad: %Goat.ref as %Climbs.ref {
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   witness = file.%impl_witness.loc15
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic impl @impl.f92(imports.%Core.import_ref.5ab3ec.1: type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt (constants.%T.patt)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (imports.%Core.import_ref.1e6), @impl.f92(%T) [symbolic = %impl_witness (constants.%impl_witness.db8)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Op.type: type = fn_type @Op.2, @impl.f92(%T) [symbolic = %Op.type (constants.%Op.type.f99)]
+// CHECK:STDOUT:   %Op: @impl.f92.%Op.type (%Op.type.f99) = struct_value () [symbolic = %Op (constants.%Op.05a)]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @impl.f92.%T (%T) [symbolic = %require_complete (constants.%require_complete)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   impl: imports.%Core.import_ref.583 as imports.%Core.import_ref.9c1 {
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     witness = imports.%Core.import_ref.51c
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: class @Goat {
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type.357]
+// CHECK:STDOUT:   complete_type_witness = %complete_type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = constants.%Goat
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Feed(%e.loc11_9.1: %Eats.type) {
+// CHECK:STDOUT:   %e.loc11_9.2: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc11_9.2 (constants.%e)]
+// CHECK:STDOUT:   %e.patt.loc11_9.2: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc11_9.2 (constants.%e.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn(%e.patt.loc11_9.1: %Eats.type) {
+// CHECK:STDOUT:   !entry:
+// CHECK:STDOUT:     return
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   %Feed.ref.loc30: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
+// CHECK:STDOUT:   %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
+// CHECK:STDOUT:   %Animal.ref.loc30: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   %Climbs.ref.loc30: type = name_ref Climbs, file.%Climbs.decl [concrete = constants.%Climbs.type]
+// CHECK:STDOUT:   %impl.elem0.loc30: %.2ac = impl_witness_access constants.%impl_witness.3ea, element0 [concrete = constants.%Op.444]
+// CHECK:STDOUT:   %bound_method.loc30_24.1: <bound method> = bound_method %Animal.ref.loc30, %impl.elem0.loc30 [concrete = constants.%Op.bound]
+// CHECK:STDOUT:   %specific_fn.loc30: <specific function> = specific_function %impl.elem0.loc30, @Op.2(type) [concrete = constants.%Op.specific_fn]
+// CHECK:STDOUT:   %bound_method.loc30_24.2: <bound method> = bound_method %Animal.ref.loc30, %specific_fn.loc30 [concrete = constants.%bound_method]
+// CHECK:STDOUT:   %type.and.loc30: init type = call %bound_method.loc30_24.2(%Animal.ref.loc30, %Climbs.ref.loc30) [concrete = constants.%facet_type]
+// CHECK:STDOUT:   %.loc30_32.1: type = value_of_initializer %type.and.loc30 [concrete = constants.%facet_type]
+// CHECK:STDOUT:   %.loc30_32.2: type = converted %type.and.loc30, %.loc30_32.1 [concrete = constants.%facet_type]
+// CHECK:STDOUT:   %facet_value: %facet_type = facet_value constants.%Goat, (constants.%impl_witness.1bc, constants.%impl_witness.1bc) [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc30_13: %facet_type = converted %Goat.ref, %facet_value [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc30_33: %Eats.type = converted %.loc30_13, <error> [concrete = <error>]
+// CHECK:STDOUT:   %Feed.ref.loc42: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
+// CHECK:STDOUT:   %Animal.ref.loc42: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
+// CHECK:STDOUT:   %Climbs.ref.loc42: type = name_ref Climbs, file.%Climbs.decl [concrete = constants.%Climbs.type]
+// CHECK:STDOUT:   %impl.elem0.loc42: %.2ac = impl_witness_access constants.%impl_witness.3ea, element0 [concrete = constants.%Op.444]
+// CHECK:STDOUT:   %bound_method.loc42_15.1: <bound method> = bound_method %Animal.ref.loc42, %impl.elem0.loc42 [concrete = constants.%Op.bound]
+// CHECK:STDOUT:   %specific_fn.loc42: <specific function> = specific_function %impl.elem0.loc42, @Op.2(type) [concrete = constants.%Op.specific_fn]
+// CHECK:STDOUT:   %bound_method.loc42_15.2: <bound method> = bound_method %Animal.ref.loc42, %specific_fn.loc42 [concrete = constants.%bound_method]
+// CHECK:STDOUT:   %type.and.loc42: init type = call %bound_method.loc42_15.2(%Animal.ref.loc42, %Climbs.ref.loc42) [concrete = constants.%facet_type]
+// CHECK:STDOUT:   %.loc42: %Eats.type = converted %type.and.loc42, <error> [concrete = <error>]
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Op.1(imports.%Core.import_ref.040: %BitAnd.type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT:   %Self: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.25f)]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic = %Self.as_type (constants.%Self.as_type.19f)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.1.%Self.as_type (%Self.as_type.19f)](%other.param_patt: @Op.1.%Self.as_type (%Self.as_type.19f)) -> @Op.1.%Self.as_type (%Self.as_type.19f);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Op.2(imports.%Core.import_ref.5ab3ec.2: type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.2.%T (%T)](%other.param_patt: @Op.2.%T (%T)) -> @Op.2.%T (%T) = "type.and";
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Convert(imports.%Core.import_ref.5ab3ec.4: type, imports.%Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62)) [from "toolchain/testing/min_prelude/facet_types.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: specific @Feed(constants.%e) {
+// CHECK:STDOUT:   %e.loc11_9.2 => constants.%e
+// CHECK:STDOUT:   %e.patt.loc11_9.2 => constants.%e
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.1(constants.%Self.25f) {
+// CHECK:STDOUT:   %Self => constants.%Self.25f
+// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type.19f
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl.f92(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT:   %T.patt => constants.%T
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.db8
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl.f92(%T) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.2(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl.f92(type) {
+// CHECK:STDOUT:   %T => type
+// CHECK:STDOUT:   %T.patt => type
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.3ea
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Op.type => constants.%Op.type.eb8
+// CHECK:STDOUT:   %Op => constants.%Op.444
+// CHECK:STDOUT:   %require_complete => constants.%complete_type.473
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.2(type) {
+// CHECK:STDOUT:   %T => type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// 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.%Eats.type) {
+// CHECK:STDOUT:   %Dest => constants.%Eats.type
+// CHECK:STDOUT:   %Dest.patt => constants.%Eats.type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.af9
+// CHECK:STDOUT:   %Self => constants.%Self.519
+// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.9a9
+// CHECK:STDOUT:   %Convert => constants.%Convert.35d
+// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.9a7
+// CHECK:STDOUT:   %assoc0 => constants.%assoc0.ceb
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- toolchain/testing/min_prelude/facet_types.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:   %As.type.b51: type = generic_interface_type @As [concrete]
+// CHECK:STDOUT:   %As.generic: %As.type.b51 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.type.8ba: type = facet_type <@As, @As(%Dest)> [symbolic]
+// CHECK:STDOUT:   %Self.b4e: %As.type.8ba = bind_symbolic_name Self, 1 [symbolic]
+// CHECK:STDOUT:   %Self.as_type.7f0: type = facet_access_type %Self.b4e [symbolic]
+// CHECK:STDOUT:   %Convert.type.ad1: type = fn_type @Convert.1, @As(%Dest) [symbolic]
+// CHECK:STDOUT:   %Convert.0ed: %Convert.type.ad1 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.assoc_type: type = assoc_entity_type %As.type.8ba [symbolic]
+// CHECK:STDOUT:   %assoc0.ac5: %As.assoc_type = assoc_entity element0, @As.%Convert.decl [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.0f3: %ImplicitAs.type.07f = bind_symbolic_name Self, 1 [symbolic]
+// CHECK:STDOUT:   %Self.as_type.419: type = facet_access_type %Self.0f3 [symbolic]
+// CHECK:STDOUT:   %Convert.type.4cf: type = fn_type @Convert.2, @ImplicitAs(%Dest) [symbolic]
+// CHECK:STDOUT:   %Convert.147: %Convert.type.4cf = struct_value () [symbolic]
+// CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type %ImplicitAs.type.07f [symbolic]
+// CHECK:STDOUT:   %assoc0.a50: %ImplicitAs.assoc_type = assoc_entity element0, @ImplicitAs.%Convert.decl [symbolic]
+// CHECK:STDOUT:   %BitAnd.type: type = facet_type <@BitAnd> [concrete]
+// CHECK:STDOUT:   %Self.e44: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Self.as_type.560: type = facet_access_type %Self.e44 [symbolic]
+// CHECK:STDOUT:   %Op.type.613: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %Op.d98: %Op.type.613 = struct_value () [concrete]
+// CHECK:STDOUT:   %BitAnd.assoc_type: type = assoc_entity_type %BitAnd.type [concrete]
+// CHECK:STDOUT:   %assoc0.121: %BitAnd.assoc_type = assoc_entity element0, @BitAnd.%Op.decl [concrete]
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic]
+// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.%Op.decl), @impl(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type.28d: type = fn_type @Op.2, @impl(%T) [symbolic]
+// CHECK:STDOUT:   %Op.902: %Op.type.28d = struct_value () [symbolic]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %T [symbolic]
+// CHECK:STDOUT:   %BitAnd.facet: %BitAnd.type = facet_value %T, (%impl_witness) [symbolic]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .As = %As.decl
+// CHECK:STDOUT:     .ImplicitAs = %ImplicitAs.decl
+// CHECK:STDOUT:     .BitAnd = %BitAnd.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %As.decl: %As.type.b51 = interface_decl @As [concrete = constants.%As.generic] {
+// CHECK:STDOUT:     %Dest.patt.loc9_14.1: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc9_14.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Dest.loc9_14.1: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc9_14.2 (constants.%Dest)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %ImplicitAs.decl: %ImplicitAs.type.96f = interface_decl @ImplicitAs [concrete = constants.%ImplicitAs.generic] {
+// CHECK:STDOUT:     %Dest.patt.loc13_22.1: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc13_22.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Dest.loc13_22.1: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc13_22.2 (constants.%Dest)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %BitAnd.decl: type = interface_decl @BitAnd [concrete = constants.%BitAnd.type] {} {}
+// CHECK:STDOUT:   impl_decl @impl [concrete] {
+// CHECK:STDOUT:     %T.patt.loc21_14.1: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc21_14.2 (constants.%T.patt)]
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %T.ref: type = name_ref T, %T.loc21_14.1 [symbolic = %T.loc21_14.2 (constants.%T)]
+// CHECK:STDOUT:     %BitAnd.ref: type = name_ref BitAnd, file.%BitAnd.decl [concrete = constants.%BitAnd.type]
+// CHECK:STDOUT:     %T.loc21_14.1: type = bind_symbolic_name T, 0 [symbolic = %T.loc21_14.2 (constants.%T)]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.%Op.decl), @impl(constants.%T) [symbolic = @impl.%impl_witness (constants.%impl_witness)]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @As(%Dest.loc9_14.1: type) {
+// CHECK:STDOUT:   %Dest.loc9_14.2: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc9_14.2 (constants.%Dest)]
+// CHECK:STDOUT:   %Dest.patt.loc9_14.2: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc9_14.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %As.type: type = facet_type <@As, @As(%Dest.loc9_14.2)> [symbolic = %As.type (constants.%As.type.8ba)]
+// CHECK:STDOUT:   %Self.2: %As.type.8ba = bind_symbolic_name Self, 1 [symbolic = %Self.2 (constants.%Self.b4e)]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert.1, @As(%Dest.loc9_14.2) [symbolic = %Convert.type (constants.%Convert.type.ad1)]
+// CHECK:STDOUT:   %Convert: @As.%Convert.type (%Convert.type.ad1) = struct_value () [symbolic = %Convert (constants.%Convert.0ed)]
+// CHECK:STDOUT:   %As.assoc_type: type = assoc_entity_type @As.%As.type (%As.type.8ba) [symbolic = %As.assoc_type (constants.%As.assoc_type)]
+// CHECK:STDOUT:   %assoc0.loc10_35.2: @As.%As.assoc_type (%As.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc10_35.2 (constants.%assoc0.ac5)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   interface {
+// CHECK:STDOUT:     %Self.1: @As.%As.type (%As.type.8ba) = bind_symbolic_name Self, 1 [symbolic = %Self.2 (constants.%Self.b4e)]
+// CHECK:STDOUT:     %Convert.decl: @As.%Convert.type (%Convert.type.ad1) = fn_decl @Convert.1 [symbolic = @As.%Convert (constants.%Convert.0ed)] {
+// CHECK:STDOUT:       %self.patt: @Convert.1.%Self.as_type.loc10_20.1 (%Self.as_type.7f0) = binding_pattern self
+// CHECK:STDOUT:       %self.param_patt: @Convert.1.%Self.as_type.loc10_20.1 (%Self.as_type.7f0) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:       %return.patt: @Convert.1.%Dest (%Dest) = return_slot_pattern
+// CHECK:STDOUT:       %return.param_patt: @Convert.1.%Dest (%Dest) = out_param_pattern %return.patt, call_param1
+// CHECK:STDOUT:     } {
+// CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @As.%Dest.loc9_14.1 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:       %self.param: @Convert.1.%Self.as_type.loc10_20.1 (%Self.as_type.7f0) = value_param call_param0
+// CHECK:STDOUT:       %.loc10_20.1: type = splice_block %.loc10_20.3 [symbolic = %Self.as_type.loc10_20.1 (constants.%Self.as_type.7f0)] {
+// CHECK:STDOUT:         %.loc10_20.2: @Convert.1.%As.type (%As.type.8ba) = specific_constant @As.%Self.1, @As(constants.%Dest) [symbolic = %Self (constants.%Self.b4e)]
+// CHECK:STDOUT:         %Self.ref: @Convert.1.%As.type (%As.type.8ba) = name_ref Self, %.loc10_20.2 [symbolic = %Self (constants.%Self.b4e)]
+// CHECK:STDOUT:         %Self.as_type.loc10_20.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc10_20.1 (constants.%Self.as_type.7f0)]
+// CHECK:STDOUT:         %.loc10_20.3: type = converted %Self.ref, %Self.as_type.loc10_20.2 [symbolic = %Self.as_type.loc10_20.1 (constants.%Self.as_type.7f0)]
+// CHECK:STDOUT:       }
+// CHECK:STDOUT:       %self: @Convert.1.%Self.as_type.loc10_20.1 (%Self.as_type.7f0) = bind_name self, %self.param
+// CHECK:STDOUT:       %return.param: ref @Convert.1.%Dest (%Dest) = out_param call_param1
+// CHECK:STDOUT:       %return: ref @Convert.1.%Dest (%Dest) = return_slot %return.param
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:     %assoc0.loc10_35.1: @As.%As.assoc_type (%As.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc10_35.2 (constants.%assoc0.ac5)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Dest = <poisoned>
+// CHECK:STDOUT:     .Convert = %assoc0.loc10_35.1
+// CHECK:STDOUT:     witness = (%Convert.decl)
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic interface @ImplicitAs(%Dest.loc13_22.1: type) {
+// CHECK:STDOUT:   %Dest.loc13_22.2: type = bind_symbolic_name Dest, 0 [symbolic = %Dest.loc13_22.2 (constants.%Dest)]
+// CHECK:STDOUT:   %Dest.patt.loc13_22.2: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt.loc13_22.2 (constants.%Dest.patt)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest.loc13_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.0f3)]
+// CHECK:STDOUT:   %Convert.type: type = fn_type @Convert.2, @ImplicitAs(%Dest.loc13_22.2) [symbolic = %Convert.type (constants.%Convert.type.4cf)]
+// CHECK:STDOUT:   %Convert: @ImplicitAs.%Convert.type (%Convert.type.4cf) = struct_value () [symbolic = %Convert (constants.%Convert.147)]
+// 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.loc14_35.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc14_35.2 (constants.%assoc0.a50)]
+// 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.0f3)]
+// CHECK:STDOUT:     %Convert.decl: @ImplicitAs.%Convert.type (%Convert.type.4cf) = fn_decl @Convert.2 [symbolic = @ImplicitAs.%Convert (constants.%Convert.147)] {
+// CHECK:STDOUT:       %self.patt: @Convert.2.%Self.as_type.loc14_20.1 (%Self.as_type.419) = binding_pattern self
+// CHECK:STDOUT:       %self.param_patt: @Convert.2.%Self.as_type.loc14_20.1 (%Self.as_type.419) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:       %return.patt: @Convert.2.%Dest (%Dest) = return_slot_pattern
+// CHECK:STDOUT:       %return.param_patt: @Convert.2.%Dest (%Dest) = out_param_pattern %return.patt, call_param1
+// CHECK:STDOUT:     } {
+// CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @ImplicitAs.%Dest.loc13_22.1 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:       %self.param: @Convert.2.%Self.as_type.loc14_20.1 (%Self.as_type.419) = value_param call_param0
+// CHECK:STDOUT:       %.loc14_20.1: type = splice_block %.loc14_20.3 [symbolic = %Self.as_type.loc14_20.1 (constants.%Self.as_type.419)] {
+// CHECK:STDOUT:         %.loc14_20.2: @Convert.2.%ImplicitAs.type (%ImplicitAs.type.07f) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self.0f3)]
+// CHECK:STDOUT:         %Self.ref: @Convert.2.%ImplicitAs.type (%ImplicitAs.type.07f) = name_ref Self, %.loc14_20.2 [symbolic = %Self (constants.%Self.0f3)]
+// CHECK:STDOUT:         %Self.as_type.loc14_20.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc14_20.1 (constants.%Self.as_type.419)]
+// CHECK:STDOUT:         %.loc14_20.3: type = converted %Self.ref, %Self.as_type.loc14_20.2 [symbolic = %Self.as_type.loc14_20.1 (constants.%Self.as_type.419)]
+// CHECK:STDOUT:       }
+// CHECK:STDOUT:       %self: @Convert.2.%Self.as_type.loc14_20.1 (%Self.as_type.419) = bind_name self, %self.param
+// CHECK:STDOUT:       %return.param: ref @Convert.2.%Dest (%Dest) = out_param call_param1
+// CHECK:STDOUT:       %return: ref @Convert.2.%Dest (%Dest) = return_slot %return.param
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:     %assoc0.loc14_35.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc14_35.2 (constants.%assoc0.a50)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Dest = <poisoned>
+// CHECK:STDOUT:     .Convert = %assoc0.loc14_35.1
+// CHECK:STDOUT:     witness = (%Convert.decl)
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @BitAnd {
+// CHECK:STDOUT:   %Self: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.e44]
+// CHECK:STDOUT:   %Op.decl: %Op.type.613 = fn_decl @Op.1 [concrete = constants.%Op.d98] {
+// CHECK:STDOUT:     %self.patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = binding_pattern self
+// CHECK:STDOUT:     %self.param_patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:     %other.patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = binding_pattern other
+// CHECK:STDOUT:     %other.param_patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = value_param_pattern %other.patt, call_param1
+// CHECK:STDOUT:     %return.patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = return_slot_pattern
+// CHECK:STDOUT:     %return.param_patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = out_param_pattern %return.patt, call_param2
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %Self.ref.loc18_37: %BitAnd.type = name_ref Self, @BitAnd.%Self [symbolic = %Self (constants.%Self.e44)]
+// CHECK:STDOUT:     %Self.as_type.loc18_37: type = facet_access_type %Self.ref.loc18_37 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:     %.loc18_37: type = converted %Self.ref.loc18_37, %Self.as_type.loc18_37 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:     %self.param: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = value_param call_param0
+// CHECK:STDOUT:     %.loc18_15.1: type = splice_block %.loc18_15.2 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)] {
+// CHECK:STDOUT:       %Self.ref.loc18_15: %BitAnd.type = name_ref Self, @BitAnd.%Self [symbolic = %Self (constants.%Self.e44)]
+// CHECK:STDOUT:       %Self.as_type.loc18_15.2: type = facet_access_type %Self.ref.loc18_15 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:       %.loc18_15.2: type = converted %Self.ref.loc18_15, %Self.as_type.loc18_15.2 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:     %self: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = bind_name self, %self.param
+// CHECK:STDOUT:     %other.param: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = value_param call_param1
+// CHECK:STDOUT:     %.loc18_28.1: type = splice_block %.loc18_28.2 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)] {
+// CHECK:STDOUT:       %Self.ref.loc18_28: %BitAnd.type = name_ref Self, @BitAnd.%Self [symbolic = %Self (constants.%Self.e44)]
+// CHECK:STDOUT:       %Self.as_type.loc18_28: type = facet_access_type %Self.ref.loc18_28 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:       %.loc18_28.2: type = converted %Self.ref.loc18_28, %Self.as_type.loc18_28 [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:     %other: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = bind_name other, %other.param
+// CHECK:STDOUT:     %return.param: ref @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = out_param call_param2
+// CHECK:STDOUT:     %return: ref @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560) = return_slot %return.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %assoc0: %BitAnd.assoc_type = assoc_entity element0, %Op.decl [concrete = constants.%assoc0.121]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   .Op = %assoc0
+// CHECK:STDOUT:   witness = (%Op.decl)
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic impl @impl(%T.loc21_14.1: type) {
+// CHECK:STDOUT:   %T.loc21_14.2: type = bind_symbolic_name T, 0 [symbolic = %T.loc21_14.2 (constants.%T)]
+// CHECK:STDOUT:   %T.patt.loc21_14.2: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc21_14.2 (constants.%T.patt)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%Op.decl), @impl(%T.loc21_14.2) [symbolic = %impl_witness (constants.%impl_witness)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Op.type: type = fn_type @Op.2, @impl(%T.loc21_14.2) [symbolic = %Op.type (constants.%Op.type.28d)]
+// CHECK:STDOUT:   %Op: @impl.%Op.type (%Op.type.28d) = struct_value () [symbolic = %Op (constants.%Op.902)]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @impl.%T.loc21_14.2 (%T) [symbolic = %require_complete (constants.%require_complete)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   impl: %T.ref as %BitAnd.ref {
+// CHECK:STDOUT:     %Op.decl: @impl.%Op.type (%Op.type.28d) = fn_decl @Op.2 [symbolic = @impl.%Op (constants.%Op.902)] {
+// CHECK:STDOUT:       %self.patt: @Op.2.%T (%T) = binding_pattern self
+// CHECK:STDOUT:       %self.param_patt: @Op.2.%T (%T) = value_param_pattern %self.patt, call_param0
+// CHECK:STDOUT:       %other.patt: @Op.2.%T (%T) = binding_pattern other
+// CHECK:STDOUT:       %other.param_patt: @Op.2.%T (%T) = value_param_pattern %other.patt, call_param1
+// CHECK:STDOUT:       %return.patt: @Op.2.%T (%T) = return_slot_pattern
+// CHECK:STDOUT:       %return.param_patt: @Op.2.%T (%T) = out_param_pattern %return.patt, call_param2
+// CHECK:STDOUT:     } {
+// CHECK:STDOUT:       %Self.ref.loc22_37: type = name_ref Self, @impl.%T.ref [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:       %self.param: @Op.2.%T (%T) = value_param call_param0
+// CHECK:STDOUT:       %Self.ref.loc22_15: type = name_ref Self, @impl.%T.ref [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:       %self: @Op.2.%T (%T) = bind_name self, %self.param
+// CHECK:STDOUT:       %other.param: @Op.2.%T (%T) = value_param call_param1
+// CHECK:STDOUT:       %Self.ref.loc22_28: type = name_ref Self, @impl.%T.ref [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:       %other: @Op.2.%T (%T) = bind_name other, %other.param
+// CHECK:STDOUT:       %return.param: ref @Op.2.%T (%T) = out_param call_param2
+// CHECK:STDOUT:       %return: ref @Op.2.%T (%T) = return_slot %return.param
+// CHECK:STDOUT:     }
+// CHECK:STDOUT:
+// CHECK:STDOUT:   !members:
+// CHECK:STDOUT:     .Op = %Op.decl
+// CHECK:STDOUT:     witness = file.%impl_witness
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Convert.1(@As.%Dest.loc9_14.1: type, @As.%Self.1: @As.%As.type (%As.type.8ba)) {
+// CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
+// CHECK:STDOUT:   %As.type: type = facet_type <@As, @As(%Dest)> [symbolic = %As.type (constants.%As.type.8ba)]
+// CHECK:STDOUT:   %Self: %As.type.8ba = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.b4e)]
+// CHECK:STDOUT:   %Self.as_type.loc10_20.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc10_20.1 (constants.%Self.as_type.7f0)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Convert.1.%Self.as_type.loc10_20.1 (%Self.as_type.7f0)]() -> @Convert.1.%Dest (%Dest);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Convert.2(@ImplicitAs.%Dest.loc13_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.0f3)]
+// CHECK:STDOUT:   %Self.as_type.loc14_20.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc14_20.1 (constants.%Self.as_type.419)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Convert.2.%Self.as_type.loc14_20.1 (%Self.as_type.419)]() -> @Convert.2.%Dest (%Dest);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Op.1(@BitAnd.%Self: %BitAnd.type) {
+// CHECK:STDOUT:   %Self: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.e44)]
+// CHECK:STDOUT:   %Self.as_type.loc18_15.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc18_15.1 (constants.%Self.as_type.560)]
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560)](%other.param_patt: @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560)) -> @Op.1.%Self.as_type.loc18_15.1 (%Self.as_type.560);
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Op.2(@impl.%T.loc21_14.1: type) {
+// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.2.%T (%T)](%other.param_patt: @Op.2.%T (%T)) -> @Op.2.%T (%T) = "type.and";
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @As(constants.%Dest) {
+// CHECK:STDOUT:   %Dest.loc9_14.2 => constants.%Dest
+// CHECK:STDOUT:   %Dest.patt.loc9_14.2 => constants.%Dest
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Convert.1(constants.%Dest, constants.%Self.b4e) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %As.type => constants.%As.type.8ba
+// CHECK:STDOUT:   %Self => constants.%Self.b4e
+// CHECK:STDOUT:   %Self.as_type.loc10_20.1 => constants.%Self.as_type.7f0
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @As(@Convert.1.%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @As(%Dest.loc9_14.2) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
+// CHECK:STDOUT:   %Dest.loc13_22.2 => constants.%Dest
+// CHECK:STDOUT:   %Dest.patt.loc13_22.2 => constants.%Dest
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Convert.2(constants.%Dest, constants.%Self.0f3) {
+// CHECK:STDOUT:   %Dest => constants.%Dest
+// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.07f
+// CHECK:STDOUT:   %Self => constants.%Self.0f3
+// CHECK:STDOUT:   %Self.as_type.loc14_20.1 => constants.%Self.as_type.419
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(@Convert.2.%Dest) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @ImplicitAs(%Dest.loc13_22.2) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.1(constants.%Self.e44) {
+// CHECK:STDOUT:   %Self => constants.%Self.e44
+// CHECK:STDOUT:   %Self.as_type.loc18_15.1 => constants.%Self.as_type.560
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(constants.%T) {
+// CHECK:STDOUT:   %T.loc21_14.2 => constants.%T
+// CHECK:STDOUT:   %T.patt.loc21_14.2 => constants.%T
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(%T.loc21_14.2) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.2(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.1(constants.%BitAnd.facet) {
+// CHECK:STDOUT:   %Self => constants.%BitAnd.facet
+// CHECK:STDOUT:   %Self.as_type.loc18_15.1 => constants.%T
+// CHECK:STDOUT: }
+// CHECK:STDOUT:

toolchain/check/testdata/builtin_conversions/min_prelude/convert_facet_value_to_narrowed_facet_type.carbon

@@ -879,10 +879,10 @@ fn HandleTameAnimal2[W:! Animal & Tame](w: W) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @HandleTameAnimal2.%W.as_type.loc11_44.2 (%W.as_type) [symbolic = %require_complete (constants.%require_complete.ba9)]
-// CHECK:STDOUT:   %W.as_wit.iface0.loc12_14.5: <witness> = facet_access_witness %W.loc11_22.2, element0 [symbolic = %W.as_wit.iface0.loc12_14.5 (constants.%W.as_wit.iface0)]
-// CHECK:STDOUT:   %Animal.facet.loc12_14.5: %Animal.type = facet_value %W.as_type.loc11_44.2, (%W.as_wit.iface0.loc12_14.5) [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
+// CHECK:STDOUT:   %W.as_wit.iface0.loc12_14.3: <witness> = facet_access_witness %W.loc11_22.2, element0 [symbolic = %W.as_wit.iface0.loc12_14.3 (constants.%W.as_wit.iface0)]
+// CHECK:STDOUT:   %Animal.facet.loc12_14.3: %Animal.type = facet_value %W.as_type.loc11_44.2, (%W.as_wit.iface0.loc12_14.3) [symbolic = %Animal.facet.loc12_14.3 (constants.%Animal.facet)]
 // CHECK:STDOUT:   %W.as_wit.iface1.loc12_14.3: <witness> = facet_access_witness %W.loc11_22.2, element1 [symbolic = %W.as_wit.iface1.loc12_14.3 (constants.%W.as_wit.iface1)]
-// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (), @impl.e7b(%Animal.facet.loc12_14.5) [symbolic = %impl_witness (constants.%impl_witness.1d8)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (), @impl.e7b(%Animal.facet.loc12_14.3) [symbolic = %impl_witness (constants.%impl_witness.1d8)]
 // CHECK:STDOUT:   %facet_value.loc12_14.3: %facet_type.6ff = facet_value %W.as_type.loc11_44.2, (%impl_witness, %W.as_wit.iface1.loc12_14.3) [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
 // CHECK:STDOUT:   %FeedTame2.specific_fn.loc12_3.2: <specific function> = specific_function constants.%FeedTame2, @FeedTame2(%facet_value.loc12_14.3) [symbolic = %FeedTame2.specific_fn.loc12_3.2 (constants.%FeedTame2.specific_fn)]
 // CHECK:STDOUT:
@@ -890,28 +890,18 @@ fn HandleTameAnimal2[W:! Animal & Tame](w: W) {
 // CHECK:STDOUT:   !entry:
 // CHECK:STDOUT:     %FeedTame2.ref: %FeedTame2.type = name_ref FeedTame2, file.%FeedTame2.decl [concrete = constants.%FeedTame2]
 // CHECK:STDOUT:     %w.ref: @HandleTameAnimal2.%W.as_type.loc11_44.2 (%W.as_type) = name_ref w, %w
-// CHECK:STDOUT:     %W.as_type.loc12_14.1: type = facet_access_type constants.%W [symbolic = %W.as_type.loc11_44.2 (constants.%W.as_type)]
-// CHECK:STDOUT:     %.loc12_14.1: type = converted constants.%W, %W.as_type.loc12_14.1 [symbolic = %W.as_type.loc11_44.2 (constants.%W.as_type)]
-// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.1: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.5 (constants.%W.as_wit.iface0)]
-// CHECK:STDOUT:     %Animal.facet.loc12_14.1: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.1) [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %.loc12_14.2: %Animal.type = converted %.loc12_14.1, %Animal.facet.loc12_14.1 [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.2: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.5 (constants.%W.as_wit.iface0)]
-// CHECK:STDOUT:     %Animal.facet.loc12_14.2: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.2) [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %.loc12_14.3: %Animal.type = converted constants.%W.as_type, %Animal.facet.loc12_14.2 [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
+// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.1: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.3 (constants.%W.as_wit.iface0)]
+// CHECK:STDOUT:     %Animal.facet.loc12_14.1: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.1) [symbolic = %Animal.facet.loc12_14.3 (constants.%Animal.facet)]
+// CHECK:STDOUT:     %.loc12_14.1: %Animal.type = converted constants.%W.as_type, %Animal.facet.loc12_14.1 [symbolic = %Animal.facet.loc12_14.3 (constants.%Animal.facet)]
 // CHECK:STDOUT:     %W.as_wit.iface1.loc12_14.1: <witness> = facet_access_witness constants.%W, element1 [symbolic = %W.as_wit.iface1.loc12_14.3 (constants.%W.as_wit.iface1)]
 // CHECK:STDOUT:     %facet_value.loc12_14.1: %facet_type.6ff = facet_value constants.%W.as_type, (constants.%impl_witness.1d8, %W.as_wit.iface1.loc12_14.1) [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
-// CHECK:STDOUT:     %.loc12_14.4: %facet_type.6ff = converted constants.%W.as_type, %facet_value.loc12_14.1 [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
-// CHECK:STDOUT:     %W.as_type.loc12_14.2: type = facet_access_type constants.%W [symbolic = %W.as_type.loc11_44.2 (constants.%W.as_type)]
-// CHECK:STDOUT:     %.loc12_14.5: type = converted constants.%W, %W.as_type.loc12_14.2 [symbolic = %W.as_type.loc11_44.2 (constants.%W.as_type)]
-// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.3: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.5 (constants.%W.as_wit.iface0)]
-// CHECK:STDOUT:     %Animal.facet.loc12_14.3: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.3) [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %.loc12_14.6: %Animal.type = converted %.loc12_14.5, %Animal.facet.loc12_14.3 [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.4: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.5 (constants.%W.as_wit.iface0)]
-// CHECK:STDOUT:     %Animal.facet.loc12_14.4: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.4) [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
-// CHECK:STDOUT:     %.loc12_14.7: %Animal.type = converted constants.%W.as_type, %Animal.facet.loc12_14.4 [symbolic = %Animal.facet.loc12_14.5 (constants.%Animal.facet)]
+// CHECK:STDOUT:     %.loc12_14.2: %facet_type.6ff = converted constants.%W.as_type, %facet_value.loc12_14.1 [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
+// CHECK:STDOUT:     %W.as_wit.iface0.loc12_14.2: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc12_14.3 (constants.%W.as_wit.iface0)]
+// CHECK:STDOUT:     %Animal.facet.loc12_14.2: %Animal.type = facet_value constants.%W.as_type, (%W.as_wit.iface0.loc12_14.2) [symbolic = %Animal.facet.loc12_14.3 (constants.%Animal.facet)]
+// CHECK:STDOUT:     %.loc12_14.3: %Animal.type = converted constants.%W.as_type, %Animal.facet.loc12_14.2 [symbolic = %Animal.facet.loc12_14.3 (constants.%Animal.facet)]
 // CHECK:STDOUT:     %W.as_wit.iface1.loc12_14.2: <witness> = facet_access_witness constants.%W, element1 [symbolic = %W.as_wit.iface1.loc12_14.3 (constants.%W.as_wit.iface1)]
 // CHECK:STDOUT:     %facet_value.loc12_14.2: %facet_type.6ff = facet_value constants.%W.as_type, (constants.%impl_witness.1d8, %W.as_wit.iface1.loc12_14.2) [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
-// CHECK:STDOUT:     %.loc12_14.8: %facet_type.6ff = converted constants.%W.as_type, %facet_value.loc12_14.2 [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
+// CHECK:STDOUT:     %.loc12_14.4: %facet_type.6ff = converted constants.%W.as_type, %facet_value.loc12_14.2 [symbolic = %facet_value.loc12_14.3 (constants.%facet_value)]
 // CHECK:STDOUT:     %FeedTame2.specific_fn.loc12_3.1: <specific function> = specific_function %FeedTame2.ref, @FeedTame2(constants.%facet_value) [symbolic = %FeedTame2.specific_fn.loc12_3.2 (constants.%FeedTame2.specific_fn)]
 // CHECK:STDOUT:     %FeedTame2.call: init %empty_tuple.type = call %FeedTame2.specific_fn.loc12_3.1(%w.ref)
 // CHECK:STDOUT:     return
@@ -991,7 +981,7 @@ fn HandleTameAnimal2[W:! Animal & Tame](w: W) {
 // CHECK:STDOUT:   %require_complete => constants.%require_complete.ba9
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @impl.e7b(@HandleTameAnimal2.%Animal.facet.loc12_14.5) {}
+// CHECK:STDOUT: specific @impl.e7b(@HandleTameAnimal2.%Animal.facet.loc12_14.3) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @FeedTame2(@HandleTameAnimal2.%facet_value.loc12_14.3) {}
 // CHECK:STDOUT:

toolchain/check/testdata/builtin_conversions/no_prelude/convert_facet_value_to_facet_value.carbon

@@ -1,267 +0,0 @@
-// 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
-//
-// AUTOUPDATE
-// TIP: To test this file alone, run:
-// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/builtin_conversions/no_prelude/convert_facet_value_to_facet_value.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/builtin_conversions/no_prelude/convert_facet_value_to_facet_value.carbon
-
-// --- core.carbon
-
-package Core;
-
-interface ImplicitAs(T:! type) {
-  fn Convert[self: Self]() -> T;
-}
-
-// --- convert_facet_value_to_facet_value.carbon
-
-library "[[@TEST_NAME]]";
-
-import Core;
-
-interface Eats {}
-interface Animal {}
-
-// TODO: This may be rejected in the future.
-// https://github.com/carbon-language/carbon-lang/issues/4853
-impl Animal as Eats {}
-
-fn Feed(e:! Eats) {}
-
-class Goat {}
-impl Goat as Animal {}
-
-fn F() {
-  Feed(Goat as Animal);
-}
-
-// CHECK:STDOUT: --- core.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic]
-// CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 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(%T)> [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(%T) [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:     %T.patt.loc4_22.1: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc4_22.2 (constants.%T.patt)]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %T.loc4_22.1: type = bind_symbolic_name T, 0 [symbolic = %T.loc4_22.2 (constants.%T)]
-// CHECK:STDOUT:   }
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: generic interface @ImplicitAs(%T.loc4_22.1: type) {
-// CHECK:STDOUT:   %T.loc4_22.2: type = bind_symbolic_name T, 0 [symbolic = %T.loc4_22.2 (constants.%T)]
-// CHECK:STDOUT:   %T.patt.loc4_22.2: type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc4_22.2 (constants.%T.patt)]
-// CHECK:STDOUT:
-// CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%T.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(%T.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_32.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc5_32.2 (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.%T (%T) = return_slot_pattern
-// CHECK:STDOUT:       %return.param_patt: @Convert.%T (%T) = out_param_pattern %return.patt, call_param1
-// CHECK:STDOUT:     } {
-// CHECK:STDOUT:       %T.ref: type = name_ref T, @ImplicitAs.%T.loc4_22.1 [symbolic = %T (constants.%T)]
-// 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.%T) [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.%T (%T) = out_param call_param1
-// CHECK:STDOUT:       %return: ref @Convert.%T (%T) = return_slot %return.param
-// CHECK:STDOUT:     }
-// CHECK:STDOUT:     %assoc0.loc5_32.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %Convert.decl [symbolic = %assoc0.loc5_32.2 (constants.%assoc0)]
-// CHECK:STDOUT:
-// CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
-// CHECK:STDOUT:     .T = <poisoned>
-// CHECK:STDOUT:     .Convert = %assoc0.loc5_32.1
-// CHECK:STDOUT:     witness = (%Convert.decl)
-// CHECK:STDOUT:   }
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Convert(@ImplicitAs.%T.loc4_22.1: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.07f)) {
-// CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic = %T (constants.%T)]
-// CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%T)> [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.%T (%T);
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @ImplicitAs(constants.%T) {
-// CHECK:STDOUT:   %T.loc4_22.2 => constants.%T
-// CHECK:STDOUT:   %T.patt.loc4_22.2 => constants.%T
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @Convert(constants.%T, constants.%Self) {
-// CHECK:STDOUT:   %T => constants.%T
-// 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.%T) {}
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @ImplicitAs(%T.loc4_22.2) {}
-// CHECK:STDOUT:
-// CHECK:STDOUT: --- convert_facet_value_to_facet_value.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %Eats.type: type = facet_type <@Eats> [concrete]
-// CHECK:STDOUT:   %Self.1b5: %Eats.type = bind_symbolic_name Self, 0 [symbolic]
-// CHECK:STDOUT:   %Animal.type: type = facet_type <@Animal> [concrete]
-// CHECK:STDOUT:   %Self.fd4: %Animal.type = bind_symbolic_name Self, 0 [symbolic]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
-// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness () [concrete]
-// CHECK:STDOUT:   %e: %Eats.type = bind_symbolic_name e, 0 [symbolic]
-// CHECK:STDOUT:   %e.patt: %Eats.type = symbolic_binding_pattern e, 0 [symbolic]
-// CHECK:STDOUT:   %Feed.type: type = fn_type @Feed [concrete]
-// CHECK:STDOUT:   %Feed: %Feed.type = struct_value () [concrete]
-// CHECK:STDOUT:   %Goat: type = class_type @Goat [concrete]
-// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
-// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
-// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
-// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
-// CHECK:STDOUT:   %Animal.facet: %Animal.type = facet_value %Goat, (%impl_witness) [concrete]
-// CHECK:STDOUT:   %Eats.facet: %Eats.type = facet_value %Animal.type, (%impl_witness) [concrete]
-// CHECK:STDOUT:   %Feed.specific_fn: <specific function> = specific_function %Feed, @Feed(%Eats.facet) [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     import Core//default
-// CHECK:STDOUT:   }
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .Eats = %Eats.decl
-// CHECK:STDOUT:     .Animal = %Animal.decl
-// CHECK:STDOUT:     .Feed = %Feed.decl
-// CHECK:STDOUT:     .Goat = %Goat.decl
-// CHECK:STDOUT:     .F = %F.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %Eats.decl: type = interface_decl @Eats [concrete = constants.%Eats.type] {} {}
-// CHECK:STDOUT:   %Animal.decl: type = interface_decl @Animal [concrete = constants.%Animal.type] {} {}
-// CHECK:STDOUT:   impl_decl @impl.d75 [concrete] {} {
-// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
-// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %impl_witness.loc11: <witness> = impl_witness () [concrete = constants.%impl_witness]
-// CHECK:STDOUT:   %Feed.decl: %Feed.type = fn_decl @Feed [concrete = constants.%Feed] {
-// CHECK:STDOUT:     %e.patt.loc13_9.1: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc13_9.2 (constants.%e.patt)]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %Eats.ref: type = name_ref Eats, file.%Eats.decl [concrete = constants.%Eats.type]
-// CHECK:STDOUT:     %e.loc13_9.1: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc13_9.2 (constants.%e)]
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Goat.decl: type = class_decl @Goat [concrete = constants.%Goat] {} {}
-// CHECK:STDOUT:   impl_decl @impl.27e [concrete] {} {
-// CHECK:STDOUT:     %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
-// CHECK:STDOUT:     %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %impl_witness.loc16: <witness> = impl_witness () [concrete = constants.%impl_witness]
-// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: interface @Eats {
-// CHECK:STDOUT:   %Self: %Eats.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.1b5]
-// CHECK:STDOUT:
-// CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = %Self
-// CHECK:STDOUT:   witness = ()
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: interface @Animal {
-// CHECK:STDOUT:   %Self: %Animal.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.fd4]
-// CHECK:STDOUT:
-// CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = %Self
-// CHECK:STDOUT:   witness = ()
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: impl @impl.d75: %Animal.ref as %Eats.ref {
-// CHECK:STDOUT: !members:
-// CHECK:STDOUT:   witness = file.%impl_witness.loc11
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: impl @impl.27e: %Goat.ref as %Animal.ref {
-// CHECK:STDOUT: !members:
-// CHECK:STDOUT:   witness = file.%impl_witness.loc16
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: class @Goat {
-// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type]
-// CHECK:STDOUT:   complete_type_witness = %complete_type
-// CHECK:STDOUT:
-// CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = constants.%Goat
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Feed(%e.loc13_9.1: %Eats.type) {
-// CHECK:STDOUT:   %e.loc13_9.2: %Eats.type = bind_symbolic_name e, 0 [symbolic = %e.loc13_9.2 (constants.%e)]
-// CHECK:STDOUT:   %e.patt.loc13_9.2: %Eats.type = symbolic_binding_pattern e, 0 [symbolic = %e.patt.loc13_9.2 (constants.%e.patt)]
-// CHECK:STDOUT:
-// CHECK:STDOUT: !definition:
-// CHECK:STDOUT:
-// CHECK:STDOUT:   fn(%e.patt.loc13_9.1: %Eats.type) {
-// CHECK:STDOUT:   !entry:
-// CHECK:STDOUT:     return
-// CHECK:STDOUT:   }
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @F() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   %Feed.ref: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
-// CHECK:STDOUT:   %Goat.ref: type = name_ref Goat, file.%Goat.decl [concrete = constants.%Goat]
-// CHECK:STDOUT:   %Animal.ref: type = name_ref Animal, file.%Animal.decl [concrete = constants.%Animal.type]
-// CHECK:STDOUT:   %Animal.facet: %Animal.type = facet_value constants.%Goat, (constants.%impl_witness) [concrete = constants.%Animal.facet]
-// CHECK:STDOUT:   %.loc19_13: %Animal.type = converted %Goat.ref, %Animal.facet [concrete = constants.%Animal.facet]
-// CHECK:STDOUT:   %Eats.facet: %Eats.type = facet_value constants.%Animal.type, (constants.%impl_witness) [concrete = constants.%Eats.facet]
-// CHECK:STDOUT:   %.loc19_22: %Eats.type = converted %.loc19_13, %Eats.facet [concrete = constants.%Eats.facet]
-// CHECK:STDOUT:   %Feed.specific_fn: <specific function> = specific_function %Feed.ref, @Feed(constants.%Eats.facet) [concrete = constants.%Feed.specific_fn]
-// CHECK:STDOUT:   %Feed.call: init %empty_tuple.type = call %Feed.specific_fn()
-// CHECK:STDOUT:   return
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @Feed(constants.%e) {
-// CHECK:STDOUT:   %e.loc13_9.2 => constants.%e
-// CHECK:STDOUT:   %e.patt.loc13_9.2 => constants.%e
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @Feed(constants.%Eats.facet) {
-// CHECK:STDOUT:   %e.loc13_9.2 => constants.%Eats.facet
-// CHECK:STDOUT:   %e.patt.loc13_9.2 => constants.%Eats.facet
-// CHECK:STDOUT:
-// CHECK:STDOUT: !definition:
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/check/testdata/builtin_conversions/no_prelude/convert_facet_value_value_to_blanket_impl.carbon

@@ -273,18 +273,12 @@ fn HandleAnimal[T:! Animal](a: T) { Feed(a); }
 // CHECK:STDOUT:   !entry:
 // CHECK:STDOUT:     %Feed.ref: %Feed.type = name_ref Feed, file.%Feed.decl [concrete = constants.%Feed]
 // CHECK:STDOUT:     %a.ref: @HandleAnimal.%T.as_type.loc13_32.2 (%T.as_type.2ad) = name_ref a, %a
-// CHECK:STDOUT:     %T.as_type.loc13_43.1: type = facet_access_type constants.%T.fd4 [symbolic = %T.as_type.loc13_32.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc13_43.1: type = converted constants.%T.fd4, %T.as_type.loc13_43.1 [symbolic = %T.as_type.loc13_32.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc13_43.2: %Animal.type = converted %.loc13_43.1, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
-// CHECK:STDOUT:     %.loc13_43.3: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
+// CHECK:STDOUT:     %.loc13_43.1: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
 // CHECK:STDOUT:     %Eats.facet.loc13_43.1: %Eats.type = facet_value constants.%T.as_type.2ad, (constants.%impl_witness.11010a.2) [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
-// CHECK:STDOUT:     %.loc13_43.4: %Eats.type = converted constants.%T.as_type.2ad, %Eats.facet.loc13_43.1 [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
-// CHECK:STDOUT:     %T.as_type.loc13_43.2: type = facet_access_type constants.%T.fd4 [symbolic = %T.as_type.loc13_32.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc13_43.5: type = converted constants.%T.fd4, %T.as_type.loc13_43.2 [symbolic = %T.as_type.loc13_32.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc13_43.6: %Animal.type = converted %.loc13_43.5, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
-// CHECK:STDOUT:     %.loc13_43.7: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
+// CHECK:STDOUT:     %.loc13_43.2: %Eats.type = converted constants.%T.as_type.2ad, %Eats.facet.loc13_43.1 [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
+// CHECK:STDOUT:     %.loc13_43.3: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc13_17.2 (constants.%T.fd4)]
 // CHECK:STDOUT:     %Eats.facet.loc13_43.2: %Eats.type = facet_value constants.%T.as_type.2ad, (constants.%impl_witness.11010a.2) [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
-// CHECK:STDOUT:     %.loc13_43.8: %Eats.type = converted constants.%T.as_type.2ad, %Eats.facet.loc13_43.2 [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
+// CHECK:STDOUT:     %.loc13_43.4: %Eats.type = converted constants.%T.as_type.2ad, %Eats.facet.loc13_43.2 [symbolic = %Eats.facet.loc13_43.3 (constants.%Eats.facet)]
 // CHECK:STDOUT:     %Feed.specific_fn.loc13_37.1: <specific function> = specific_function %Feed.ref, @Feed(constants.%Eats.facet) [symbolic = %Feed.specific_fn.loc13_37.2 (constants.%Feed.specific_fn)]
 // CHECK:STDOUT:     %Feed.call: init %empty_tuple.type = call %Feed.specific_fn.loc13_37.1(%a.ref)
 // CHECK:STDOUT:     return

toolchain/check/testdata/builtin_conversions/no_prelude/convert_facet_value_value_to_generic_facet_value_value.carbon

@@ -444,13 +444,9 @@ fn F() {
 // CHECK:STDOUT:     %.loc23_76.1: %Edible.type = converted constants.%Food.as_type.fae, constants.%Food.5fe [symbolic = %Food.loc23_29.2 (constants.%Food.5fe)]
 // CHECK:STDOUT:     %.loc23_76.2: %Edible.type = converted constants.%Food.as_type.fae, constants.%Food.5fe [symbolic = %Food.loc23_29.2 (constants.%Food.5fe)]
 // CHECK:STDOUT:     %.loc23_76.3: %Edible.type = converted constants.%Food.as_type.fae, constants.%Food.5fe [symbolic = %Food.loc23_29.2 (constants.%Food.5fe)]
-// CHECK:STDOUT:     %T.as_type.loc23_76: type = facet_access_type constants.%T.fd4 [symbolic = %T.as_type.loc23_47.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc23_76.4: type = converted constants.%T.fd4, %T.as_type.loc23_76 [symbolic = %T.as_type.loc23_47.2 (constants.%T.as_type.2ad)]
-// CHECK:STDOUT:     %.loc23_76.5: %Animal.type = converted %.loc23_76.4, constants.%T.fd4 [symbolic = %T.loc23_17.2 (constants.%T.fd4)]
-// CHECK:STDOUT:     %.loc23_76.6: %Edible.type = converted constants.%Food.as_type.fae, constants.%Food.5fe [symbolic = %Food.loc23_29.2 (constants.%Food.5fe)]
-// CHECK:STDOUT:     %.loc23_76.7: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc23_17.2 (constants.%T.fd4)]
+// CHECK:STDOUT:     %.loc23_76.4: %Animal.type = converted constants.%T.as_type.2ad, constants.%T.fd4 [symbolic = %T.loc23_17.2 (constants.%T.fd4)]
 // CHECK:STDOUT:     %Eats.facet.loc23_76.1: @HandleAnimal.%Eats.type (%Eats.type.f54c3d.2) = facet_value constants.%T.as_type.2ad, (constants.%impl_witness.c7c36b.2) [symbolic = %Eats.facet.loc23_76.2 (constants.%Eats.facet.97e)]
-// CHECK:STDOUT:     %.loc23_76.8: @HandleAnimal.%Eats.type (%Eats.type.f54c3d.2) = converted constants.%T.as_type.2ad, %Eats.facet.loc23_76.1 [symbolic = %Eats.facet.loc23_76.2 (constants.%Eats.facet.97e)]
+// CHECK:STDOUT:     %.loc23_76.5: @HandleAnimal.%Eats.type (%Eats.type.f54c3d.2) = converted constants.%T.as_type.2ad, %Eats.facet.loc23_76.1 [symbolic = %Eats.facet.loc23_76.2 (constants.%Eats.facet.97e)]
 // CHECK:STDOUT:     %Feed.specific_fn.loc23_64.1: <specific function> = specific_function %Feed.ref, @Feed(constants.%Food.5fe, constants.%Eats.facet.97e) [symbolic = %Feed.specific_fn.loc23_64.2 (constants.%Feed.specific_fn.387)]
 // CHECK:STDOUT:     %Feed.call: init %empty_tuple.type = call %Feed.specific_fn.loc23_64.1(%a.ref, %food.ref)
 // CHECK:STDOUT:     return

toolchain/check/testdata/facet/min_prelude/fail_todo_call_combined_impl_witness.carbon → toolchain/check/testdata/facet/min_prelude/call_combined_impl_witness.carbon

@@ -7,9 +7,9 @@
 //
 // AUTOUPDATE
 // TIP: To test this file alone, run:
-// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/facet/min_prelude/fail_todo_call_combined_impl_witness.carbon
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/facet/min_prelude/call_combined_impl_witness.carbon
 // TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/facet/min_prelude/fail_todo_call_combined_impl_witness.carbon
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/facet/min_prelude/call_combined_impl_witness.carbon
 
 interface Empty {
 }
@@ -36,24 +36,7 @@ fn G[T:! A & Empty & B](t: T) {
   T.AA();
   T.BB();
 
-  // TODO: Qualified lookup of `AA` and `BB` should also be possible here, using
-  // the witnesses found in type deduction.
-
-  // CHECK:STDERR: fail_todo_call_combined_impl_witness.carbon:[[@LINE+7]]:3: error: cannot implicitly convert type `T` that implements `Empty & A & B` into type implementing `A` [ConversionFailureFacetToFacet]
-  // CHECK:STDERR:   T.(A.AA)();
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR: fail_todo_call_combined_impl_witness.carbon:[[@LINE+4]]:3: note: type `Empty & A & B` does not implement interface `Core.ImplicitAs(A)` [MissingImplInMemberAccessNote]
-  // CHECK:STDERR:   T.(A.AA)();
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR:
   T.(A.AA)();
-  // CHECK:STDERR: fail_todo_call_combined_impl_witness.carbon:[[@LINE+7]]:3: error: cannot implicitly convert type `T` that implements `Empty & A & B` into type implementing `B` [ConversionFailureFacetToFacet]
-  // CHECK:STDERR:   T.(B.BB)();
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR: fail_todo_call_combined_impl_witness.carbon:[[@LINE+4]]:3: note: type `Empty & A & B` does not implement interface `Core.ImplicitAs(B)` [MissingImplInMemberAccessNote]
-  // CHECK:STDERR:   T.(B.BB)();
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR:
   T.(B.BB)();
 }
 
@@ -61,7 +44,7 @@ fn F() {
   G({} as C);
 }
 
-// CHECK:STDOUT: --- fail_todo_call_combined_impl_witness.carbon
+// CHECK:STDOUT: --- call_combined_impl_witness.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {
 // CHECK:STDOUT:   %Empty.type: type = facet_type <@Empty> [concrete]
@@ -96,7 +79,7 @@ fn F() {
 // CHECK:STDOUT:   %BitAnd.assoc_type: type = assoc_entity_type %BitAnd.type [concrete]
 // CHECK:STDOUT:   %assoc0.a63: %BitAnd.assoc_type = assoc_entity element0, imports.%Core.import_ref.a93 [concrete]
 // CHECK:STDOUT:   %Op.type.27a: type = fn_type @Op.1 [concrete]
-// CHECK:STDOUT:   %Self.as_type.19f: type = facet_access_type %Self.25f [symbolic]
+// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self.25f [symbolic]
 // CHECK:STDOUT:   %T.8b3: type = bind_symbolic_name T, 0 [symbolic]
 // CHECK:STDOUT:   %T.patt.e01: type = symbolic_binding_pattern T, 0 [symbolic]
 // CHECK:STDOUT:   %impl_witness.db8: <witness> = impl_witness (imports.%Core.import_ref.1e6), @impl.f92(%T.8b3) [symbolic]
@@ -133,26 +116,6 @@ fn F() {
 // CHECK:STDOUT:   %.a5b: type = fn_type_with_self_type %BB.type.64d, %B.facet.abf [symbolic]
 // CHECK:STDOUT:   %impl.elem0.097: %.a5b = impl_witness_access %T.as_wit.iface2, element0 [symbolic]
 // CHECK:STDOUT:   %specific_fn.9fa: <specific function> = specific_function %impl.elem0.097, @BB.1(%B.facet.abf) [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:   %ImplicitAs.type.8a4: type = facet_type <@ImplicitAs, @ImplicitAs(%B.type)> [concrete]
-// CHECK:STDOUT:   %Convert.type.f1c: type = fn_type @Convert, @ImplicitAs(%B.type) [concrete]
-// CHECK:STDOUT:   %Convert.e93: %Convert.type.f1c = struct_value () [concrete]
-// CHECK:STDOUT:   %ImplicitAs.assoc_type.f97: type = assoc_entity_type %ImplicitAs.type.8a4 [concrete]
-// CHECK:STDOUT:   %assoc0.824: %ImplicitAs.assoc_type.f97 = assoc_entity element0, imports.%Core.import_ref.1c7 [concrete]
 // CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
 // CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
 // CHECK:STDOUT:   %C.val: %C = struct_value () [concrete]
@@ -167,7 +130,6 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
 // CHECK:STDOUT:     .BitAnd = %Core.BitAnd
-// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core.import_ref.ad0 = import_ref Core//prelude, inst100 [no loc], unloaded
@@ -180,13 +142,6 @@ fn F() {
 // CHECK:STDOUT:   %Core.import_ref.9c1: type = import_ref Core//prelude, loc21_29, loaded [concrete = constants.%BitAnd.type]
 // CHECK:STDOUT:   %Core.import_ref.1e6: @impl.f92.%Op.type (%Op.type.f99) = import_ref Core//prelude, loc22_42, loaded [symbolic = @impl.f92.%Op (constants.%Op.05a)]
 // CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.f92.%T (constants.%T.8b3)]
-// CHECK:STDOUT:   %Core.import_ref.5ab3ec.3: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.ff5 = import_ref Core//prelude, inst65 [no loc], unloaded
-// CHECK:STDOUT:   %Core.import_ref.630: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.837) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.43d)]
-// CHECK:STDOUT:   %Core.Convert = import_ref Core//prelude, Convert, unloaded
-// CHECK:STDOUT:   %Core.import_ref.5ab3ec.4: type = import_ref Core//prelude, loc13_22, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62) = import_ref Core//prelude, inst65 [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.519)]
-// CHECK:STDOUT:   %Core.import_ref.1c7: @ImplicitAs.%Convert.type (%Convert.type.275) = import_ref Core//prelude, loc14_35, loaded [symbolic = @ImplicitAs.%Convert (constants.%Convert.42e)]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -296,26 +251,6 @@ fn F() {
 // CHECK:STDOUT:   witness = (imports.%Core.Op)
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic interface @ImplicitAs(imports.%Core.import_ref.5ab3ec.3: type) [from "toolchain/testing/min_prelude/facet_types.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: impl @impl.d78: %C.ref as %Empty.ref {
 // CHECK:STDOUT: !members:
 // CHECK:STDOUT:   witness = file.%impl_witness.loc24
@@ -381,9 +316,9 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: generic fn @Op.1(imports.%Core.import_ref.040: %BitAnd.type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
 // CHECK:STDOUT:   %Self: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.25f)]
-// CHECK:STDOUT:   %Self.as_type: type = facet_access_type %Self [symbolic = %Self.as_type (constants.%Self.as_type.19f)]
+// 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: @Op.1.%Self.as_type (%Self.as_type.19f)](%other.param_patt: @Op.1.%Self.as_type (%Self.as_type.19f)) -> @Op.1.%Self.as_type (%Self.as_type.19f);
+// CHECK:STDOUT:   fn[%self.param_patt: @Op.1.%Self.as_type (%Self.as_type)](%other.param_patt: @Op.1.%Self.as_type (%Self.as_type)) -> @Op.1.%Self.as_type (%Self.as_type);
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: generic fn @Op.2(imports.%Core.import_ref.5ab3ec.2: type) [from "toolchain/testing/min_prelude/facet_types.carbon"] {
@@ -402,15 +337,15 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @G.%T.as_type.loc32_28.2 (%T.as_type) [symbolic = %require_complete (constants.%require_complete.383)]
 // CHECK:STDOUT:   %T.as_wit.iface1.loc33_4.2: <witness> = facet_access_witness %T.loc32_6.2, element1 [symbolic = %T.as_wit.iface1.loc33_4.2 (constants.%T.as_wit.iface1)]
-// CHECK:STDOUT:   %A.facet: %A.type = facet_value %T.as_type.loc32_28.2, (%T.as_wit.iface1.loc33_4.2) [symbolic = %A.facet (constants.%A.facet.5b4)]
-// CHECK:STDOUT:   %.loc33_4.2: type = fn_type_with_self_type constants.%AA.type.b97, %A.facet [symbolic = %.loc33_4.2 (constants.%.860)]
+// CHECK:STDOUT:   %A.facet.loc33: %A.type = facet_value %T.as_type.loc32_28.2, (%T.as_wit.iface1.loc33_4.2) [symbolic = %A.facet.loc33 (constants.%A.facet.5b4)]
+// CHECK:STDOUT:   %.loc33_4.2: type = fn_type_with_self_type constants.%AA.type.b97, %A.facet.loc33 [symbolic = %.loc33_4.2 (constants.%.860)]
 // CHECK:STDOUT:   %impl.elem0.loc33_4.2: @G.%.loc33_4.2 (%.860) = impl_witness_access %T.as_wit.iface1.loc33_4.2, element0 [symbolic = %impl.elem0.loc33_4.2 (constants.%impl.elem0.656)]
-// CHECK:STDOUT:   %specific_fn.loc33_4.2: <specific function> = specific_function %impl.elem0.loc33_4.2, @AA.1(%A.facet) [symbolic = %specific_fn.loc33_4.2 (constants.%specific_fn.74e)]
+// CHECK:STDOUT:   %specific_fn.loc33_4.2: <specific function> = specific_function %impl.elem0.loc33_4.2, @AA.1(%A.facet.loc33) [symbolic = %specific_fn.loc33_4.2 (constants.%specific_fn.74e)]
 // CHECK:STDOUT:   %T.as_wit.iface2.loc34_4.2: <witness> = facet_access_witness %T.loc32_6.2, element2 [symbolic = %T.as_wit.iface2.loc34_4.2 (constants.%T.as_wit.iface2)]
-// CHECK:STDOUT:   %B.facet: %B.type = facet_value %T.as_type.loc32_28.2, (%T.as_wit.iface2.loc34_4.2) [symbolic = %B.facet (constants.%B.facet.abf)]
-// CHECK:STDOUT:   %.loc34_4.2: type = fn_type_with_self_type constants.%BB.type.64d, %B.facet [symbolic = %.loc34_4.2 (constants.%.a5b)]
+// CHECK:STDOUT:   %B.facet.loc34: %B.type = facet_value %T.as_type.loc32_28.2, (%T.as_wit.iface2.loc34_4.2) [symbolic = %B.facet.loc34 (constants.%B.facet.abf)]
+// CHECK:STDOUT:   %.loc34_4.2: type = fn_type_with_self_type constants.%BB.type.64d, %B.facet.loc34 [symbolic = %.loc34_4.2 (constants.%.a5b)]
 // CHECK:STDOUT:   %impl.elem0.loc34_4.2: @G.%.loc34_4.2 (%.a5b) = impl_witness_access %T.as_wit.iface2.loc34_4.2, element0 [symbolic = %impl.elem0.loc34_4.2 (constants.%impl.elem0.097)]
-// CHECK:STDOUT:   %specific_fn.loc34_4.2: <specific function> = specific_function %impl.elem0.loc34_4.2, @BB.1(%B.facet) [symbolic = %specific_fn.loc34_4.2 (constants.%specific_fn.9fa)]
+// CHECK:STDOUT:   %specific_fn.loc34_4.2: <specific function> = specific_function %impl.elem0.loc34_4.2, @BB.1(%B.facet.loc34) [symbolic = %specific_fn.loc34_4.2 (constants.%specific_fn.9fa)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   fn[%T.patt.loc32_6.1: %facet_type.242](%t.param_patt: @G.%T.as_type.loc32_28.2 (%T.as_type)) {
 // CHECK:STDOUT:   !entry:
@@ -446,43 +381,48 @@ fn F() {
 // CHECK:STDOUT:     %impl.elem0.loc37: @G.%.loc34_4.2 (%.a5b) = impl_witness_access %T.as_wit.iface2.loc37, element0 [symbolic = %impl.elem0.loc34_4.2 (constants.%impl.elem0.097)]
 // CHECK:STDOUT:     %specific_fn.loc37: <specific function> = specific_function %impl.elem0.loc37, @BB.1(constants.%B.facet.abf) [symbolic = %specific_fn.loc34_4.2 (constants.%specific_fn.9fa)]
 // CHECK:STDOUT:     %BB.call.loc37: init %empty_tuple.type = call %specific_fn.loc37()
-// CHECK:STDOUT:     %T.ref.loc49: %facet_type.242 = name_ref T, %T.loc32_6.1 [symbolic = %T.loc32_6.2 (constants.%T.2df)]
-// CHECK:STDOUT:     %A.ref.loc49: type = name_ref A, file.%A.decl [concrete = constants.%A.type]
-// CHECK:STDOUT:     %AA.ref.loc49: %A.assoc_type = name_ref AA, @A.%assoc0 [concrete = constants.%assoc0.f33]
-// CHECK:STDOUT:     %.loc49: %A.type = converted %T.ref.loc49, <error> [concrete = <error>]
-// CHECK:STDOUT:     %T.ref.loc57: %facet_type.242 = name_ref T, %T.loc32_6.1 [symbolic = %T.loc32_6.2 (constants.%T.2df)]
-// CHECK:STDOUT:     %B.ref.loc57: type = name_ref B, file.%B.decl [concrete = constants.%B.type]
-// CHECK:STDOUT:     %BB.ref.loc57: %B.assoc_type = name_ref BB, @B.%assoc0 [concrete = constants.%assoc0.019]
-// CHECK:STDOUT:     %.loc57: %B.type = converted %T.ref.loc57, <error> [concrete = <error>]
+// CHECK:STDOUT:     %T.ref.loc39: %facet_type.242 = name_ref T, %T.loc32_6.1 [symbolic = %T.loc32_6.2 (constants.%T.2df)]
+// CHECK:STDOUT:     %A.ref.loc39: type = name_ref A, file.%A.decl [concrete = constants.%A.type]
+// CHECK:STDOUT:     %AA.ref.loc39: %A.assoc_type = name_ref AA, @A.%assoc0 [concrete = constants.%assoc0.f33]
+// CHECK:STDOUT:     %T.as_wit.iface1.loc39: <witness> = facet_access_witness constants.%T.2df, element1 [symbolic = %T.as_wit.iface1.loc33_4.2 (constants.%T.as_wit.iface1)]
+// CHECK:STDOUT:     %T.as_type.loc39: type = facet_access_type constants.%T.2df [symbolic = %T.as_type.loc32_28.2 (constants.%T.as_type)]
+// CHECK:STDOUT:     %A.facet.loc39: %A.type = facet_value %T.as_type.loc39, (%T.as_wit.iface1.loc39) [symbolic = %A.facet.loc33 (constants.%A.facet.5b4)]
+// CHECK:STDOUT:     %.loc39: %A.type = converted %T.ref.loc39, %A.facet.loc39 [symbolic = %A.facet.loc33 (constants.%A.facet.5b4)]
+// CHECK:STDOUT:     %as_wit.iface0.loc39: <witness> = facet_access_witness %.loc39, element0 [symbolic = %T.as_wit.iface1.loc33_4.2 (constants.%T.as_wit.iface1)]
+// CHECK:STDOUT:     %impl.elem0.loc39: @G.%.loc33_4.2 (%.860) = impl_witness_access %as_wit.iface0.loc39, element0 [symbolic = %impl.elem0.loc33_4.2 (constants.%impl.elem0.656)]
+// CHECK:STDOUT:     %specific_fn.loc39: <specific function> = specific_function %impl.elem0.loc39, @AA.1(constants.%A.facet.5b4) [symbolic = %specific_fn.loc33_4.2 (constants.%specific_fn.74e)]
+// CHECK:STDOUT:     %AA.call.loc39: init %empty_tuple.type = call %specific_fn.loc39()
+// CHECK:STDOUT:     %T.ref.loc40: %facet_type.242 = name_ref T, %T.loc32_6.1 [symbolic = %T.loc32_6.2 (constants.%T.2df)]
+// CHECK:STDOUT:     %B.ref.loc40: type = name_ref B, file.%B.decl [concrete = constants.%B.type]
+// CHECK:STDOUT:     %BB.ref.loc40: %B.assoc_type = name_ref BB, @B.%assoc0 [concrete = constants.%assoc0.019]
+// CHECK:STDOUT:     %T.as_wit.iface2.loc40: <witness> = facet_access_witness constants.%T.2df, element2 [symbolic = %T.as_wit.iface2.loc34_4.2 (constants.%T.as_wit.iface2)]
+// CHECK:STDOUT:     %T.as_type.loc40: type = facet_access_type constants.%T.2df [symbolic = %T.as_type.loc32_28.2 (constants.%T.as_type)]
+// CHECK:STDOUT:     %B.facet.loc40: %B.type = facet_value %T.as_type.loc40, (%T.as_wit.iface2.loc40) [symbolic = %B.facet.loc34 (constants.%B.facet.abf)]
+// CHECK:STDOUT:     %.loc40: %B.type = converted %T.ref.loc40, %B.facet.loc40 [symbolic = %B.facet.loc34 (constants.%B.facet.abf)]
+// CHECK:STDOUT:     %as_wit.iface0.loc40: <witness> = facet_access_witness %.loc40, element0 [symbolic = %T.as_wit.iface2.loc34_4.2 (constants.%T.as_wit.iface2)]
+// CHECK:STDOUT:     %impl.elem0.loc40: @G.%.loc34_4.2 (%.a5b) = impl_witness_access %as_wit.iface0.loc40, element0 [symbolic = %impl.elem0.loc34_4.2 (constants.%impl.elem0.097)]
+// CHECK:STDOUT:     %specific_fn.loc40: <specific function> = specific_function %impl.elem0.loc40, @BB.1(constants.%B.facet.abf) [symbolic = %specific_fn.loc34_4.2 (constants.%specific_fn.9fa)]
+// CHECK:STDOUT:     %BB.call.loc40: init %empty_tuple.type = call %specific_fn.loc40()
 // CHECK:STDOUT:     return
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Convert(imports.%Core.import_ref.5ab3ec.4: type, imports.%Core.import_ref.ce1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.d62)) [from "toolchain/testing/min_prelude/facet_types.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: fn @F() {
 // CHECK:STDOUT: !entry:
 // CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
-// CHECK:STDOUT:   %.loc61_6.1: %empty_struct_type = struct_literal ()
+// CHECK:STDOUT:   %.loc44_6.1: %empty_struct_type = struct_literal ()
 // CHECK:STDOUT:   %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
-// CHECK:STDOUT:   %.loc61_6.2: ref %C = temporary_storage
-// CHECK:STDOUT:   %.loc61_6.3: init %C = class_init (), %.loc61_6.2 [concrete = constants.%C.val]
-// CHECK:STDOUT:   %.loc61_6.4: ref %C = temporary %.loc61_6.2, %.loc61_6.3
-// CHECK:STDOUT:   %.loc61_8.1: ref %C = converted %.loc61_6.1, %.loc61_6.4
-// CHECK:STDOUT:   %facet_value.loc61_12.1: %facet_type.242 = facet_value constants.%C, (constants.%impl_witness.1bc, constants.%impl_witness.97a, constants.%impl_witness.fe4) [concrete = constants.%facet_value]
-// CHECK:STDOUT:   %.loc61_12.1: %facet_type.242 = converted constants.%C, %facet_value.loc61_12.1 [concrete = constants.%facet_value]
-// CHECK:STDOUT:   %facet_value.loc61_12.2: %facet_type.242 = facet_value constants.%C, (constants.%impl_witness.1bc, constants.%impl_witness.97a, constants.%impl_witness.fe4) [concrete = constants.%facet_value]
-// CHECK:STDOUT:   %.loc61_12.2: %facet_type.242 = converted constants.%C, %facet_value.loc61_12.2 [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc44_6.2: ref %C = temporary_storage
+// CHECK:STDOUT:   %.loc44_6.3: init %C = class_init (), %.loc44_6.2 [concrete = constants.%C.val]
+// CHECK:STDOUT:   %.loc44_6.4: ref %C = temporary %.loc44_6.2, %.loc44_6.3
+// CHECK:STDOUT:   %.loc44_8.1: ref %C = converted %.loc44_6.1, %.loc44_6.4
+// CHECK:STDOUT:   %facet_value.loc44_12.1: %facet_type.242 = facet_value constants.%C, (constants.%impl_witness.1bc, constants.%impl_witness.97a, constants.%impl_witness.fe4) [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc44_12.1: %facet_type.242 = converted constants.%C, %facet_value.loc44_12.1 [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %facet_value.loc44_12.2: %facet_type.242 = facet_value constants.%C, (constants.%impl_witness.1bc, constants.%impl_witness.97a, constants.%impl_witness.fe4) [concrete = constants.%facet_value]
+// CHECK:STDOUT:   %.loc44_12.2: %facet_type.242 = converted constants.%C, %facet_value.loc44_12.2 [concrete = constants.%facet_value]
 // CHECK:STDOUT:   %G.specific_fn: <specific function> = specific_function %G.ref, @G(constants.%facet_value) [concrete = constants.%G.specific_fn]
-// CHECK:STDOUT:   %.loc61_8.2: %C = bind_value %.loc61_8.1
-// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.specific_fn(%.loc61_8.2)
+// CHECK:STDOUT:   %.loc44_8.2: %C = bind_value %.loc44_8.1
+// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.specific_fn(%.loc44_8.2)
 // CHECK:STDOUT:   return
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -496,7 +436,7 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @Op.1(constants.%Self.25f) {
 // CHECK:STDOUT:   %Self => constants.%Self.25f
-// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type.19f
+// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @impl.f92(constants.%T.8b3) {
@@ -538,51 +478,9 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @BB.1(constants.%B.facet.abf) {}
 // 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 @ImplicitAs(constants.%B.type) {
-// CHECK:STDOUT:   %Dest => constants.%B.type
-// CHECK:STDOUT:   %Dest.patt => constants.%B.type
-// CHECK:STDOUT:
-// CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.8a4
-// CHECK:STDOUT:   %Self => constants.%Self.519
-// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.f1c
-// CHECK:STDOUT:   %Convert => constants.%Convert.e93
-// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.f97
-// CHECK:STDOUT:   %assoc0 => constants.%assoc0.824
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: specific @AA.1(@G.%A.facet) {}
+// CHECK:STDOUT: specific @AA.1(@G.%A.facet.loc33) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @BB.1(@G.%B.facet) {}
+// CHECK:STDOUT: specific @BB.1(@G.%B.facet.loc34) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @G(constants.%facet_value) {
 // CHECK:STDOUT:   %T.loc32_6.2 => constants.%facet_value
@@ -592,12 +490,12 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %require_complete => constants.%complete_type.357
 // CHECK:STDOUT:   %T.as_wit.iface1.loc33_4.2 => constants.%impl_witness.97a
-// CHECK:STDOUT:   %A.facet => constants.%A.facet.213
+// CHECK:STDOUT:   %A.facet.loc33 => constants.%A.facet.213
 // CHECK:STDOUT:   %.loc33_4.2 => constants.%.4b2
 // CHECK:STDOUT:   %impl.elem0.loc33_4.2 => constants.%AA.95d
 // CHECK:STDOUT:   %specific_fn.loc33_4.2 => constants.%AA.specific_fn
 // CHECK:STDOUT:   %T.as_wit.iface2.loc34_4.2 => constants.%impl_witness.fe4
-// CHECK:STDOUT:   %B.facet => constants.%B.facet.f74
+// CHECK:STDOUT:   %B.facet.loc34 => constants.%B.facet.f74
 // CHECK:STDOUT:   %.loc34_4.2 => constants.%.2b4
 // CHECK:STDOUT:   %impl.elem0.loc34_4.2 => constants.%BB.fe8
 // CHECK:STDOUT:   %specific_fn.loc34_4.2 => constants.%BB.specific_fn

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

@@ -26,6 +26,10 @@ interface I {
 
 interface J {
   alias U = I.T;
+  // CHECK:STDERR: fail_alias_to_different_interface.carbon:[[@LINE+11]]:13: error: semantics TODO: `impl lookup on incomplete facet type` [SemanticsTodo]
+  // CHECK:STDERR:   fn F() -> U;
+  // CHECK:STDERR:             ^
+  // CHECK:STDERR:
   // CHECK:STDERR: fail_alias_to_different_interface.carbon:[[@LINE+7]]:13: error: cannot implicitly convert type `Self` that implements `J` into type implementing `I` [ConversionFailureFacetToFacet]
   // CHECK:STDERR:   fn F() -> U;
   // CHECK:STDERR:             ^
@@ -51,6 +55,10 @@ impl forall [V:! J2] V as I2 where .T2 = () {}
 
 interface J2 {
   alias U2 = I2.T2;
+  // CHECK:STDERR: fail_todo_alias_to_different_interface_with_requires.carbon:[[@LINE+11]]:14: error: semantics TODO: `impl lookup on incomplete facet type` [SemanticsTodo]
+  // CHECK:STDERR:   fn F2() -> U2;
+  // CHECK:STDERR:              ^~
+  // CHECK:STDERR:
   // CHECK:STDERR: fail_todo_alias_to_different_interface_with_requires.carbon:[[@LINE+7]]:14: error: cannot implicitly convert type `Self` that implements `J2` into type implementing `I2` [ConversionFailureFacetToFacet]
   // CHECK:STDERR:   fn F2() -> U2;
   // CHECK:STDERR:              ^~
@@ -269,7 +277,7 @@ 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:     %.loc18: %I.type = converted @J.%Self, <error> [concrete = <error>]
+// CHECK:STDOUT:     %.loc22: %I.type = converted @J.%Self, <error> [concrete = <error>]
 // CHECK:STDOUT:     %U.ref: <error> = name_ref U, <error> [concrete = <error>]
 // CHECK:STDOUT:     %return.param: ref <error> = out_param call_param0
 // CHECK:STDOUT:     %return: ref <error> = return_slot %return.param
@@ -372,28 +380,25 @@ interface C {
 // CHECK:STDOUT:   %I2.facet: %I2.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0, element0 [symbolic_self]
 // CHECK:STDOUT:   %I2_where.type: type = facet_type <@I2 where %impl.elem0 = %empty_tuple.type> [concrete]
-// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%empty_tuple.type), @impl(%V) [symbolic]
+// CHECK:STDOUT:   %impl_witness.ec95d0.1: <witness> = impl_witness (%empty_tuple.type), @impl(%V) [symbolic]
 // CHECK:STDOUT:   %Self.541: %J2.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Self.as_type.f5c: type = facet_access_type %Self.541 [symbolic]
+// CHECK:STDOUT:   %impl_witness.ec95d0.2: <witness> = impl_witness (%empty_tuple.type), @impl(%Self.541) [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: type = facet_access_type %Self.519 [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.40d: type = facet_type <@ImplicitAs, @ImplicitAs(%J2.type)> [concrete]
-// CHECK:STDOUT:   %Convert.type.099: type = fn_type @Convert, @ImplicitAs(%J2.type) [concrete]
-// CHECK:STDOUT:   %Convert.7ee: %Convert.type.099 = struct_value () [concrete]
-// CHECK:STDOUT:   %ImplicitAs.assoc_type.4e8: type = assoc_entity_type %ImplicitAs.type.40d [concrete]
-// CHECK:STDOUT:   %assoc0.78f: %ImplicitAs.assoc_type.4e8 = 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:   %ImplicitAs.type.2eb: type = facet_type <@ImplicitAs, @ImplicitAs(%I2.type)> [concrete]
 // CHECK:STDOUT:   %Convert.type.b16: type = fn_type @Convert, @ImplicitAs(%I2.type) [concrete]
 // CHECK:STDOUT:   %Convert.b2c: %Convert.type.b16 = struct_value () [concrete]
 // CHECK:STDOUT:   %ImplicitAs.assoc_type.ede: type = assoc_entity_type %ImplicitAs.type.2eb [concrete]
 // CHECK:STDOUT:   %assoc0.76a: %ImplicitAs.assoc_type.ede = 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:   %F2.type: type = fn_type @F2 [concrete]
 // CHECK:STDOUT:   %F2: %F2.type = struct_value () [concrete]
 // CHECK:STDOUT:   %J2.assoc_type: type = assoc_entity_type %J2.type [concrete]
@@ -445,7 +450,7 @@ interface C {
 // CHECK:STDOUT:     %J2.ref: type = name_ref J2, file.%J2.decl.loc9 [concrete = constants.%J2.type]
 // CHECK:STDOUT:     %V.loc11_14.1: %J2.type = bind_symbolic_name V, 0 [symbolic = %V.loc11_14.2 (constants.%V)]
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (constants.%empty_tuple.type), @impl(constants.%V) [symbolic = @impl.%impl_witness (constants.%impl_witness)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (constants.%empty_tuple.type), @impl(constants.%V) [symbolic = @impl.%impl_witness (constants.%impl_witness.ec95d0.1)]
 // CHECK:STDOUT:   %J2.decl.loc13: type = interface_decl @J2 [concrete = constants.%J2.type] {} {}
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -470,8 +475,10 @@ 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:     %.loc22_14.1: %J2.type = converted constants.%J2.type, <error> [concrete = <error>]
-// CHECK:STDOUT:     %.loc22_14.2: %I2.type = converted @J2.%Self, <error> [concrete = <error>]
+// CHECK:STDOUT:     %Self.as_type.loc26_14.2: type = facet_access_type constants.%Self.541 [symbolic = %Self.as_type.loc26_14.1 (constants.%Self.as_type.f5c)]
+// CHECK:STDOUT:     %.loc26_14.1: type = converted constants.%Self.541, %Self.as_type.loc26_14.2 [symbolic = %Self.as_type.loc26_14.1 (constants.%Self.as_type.f5c)]
+// CHECK:STDOUT:     %.loc26_14.2: %J2.type = converted %.loc26_14.1, constants.%Self.541 [symbolic = %Self (constants.%Self.541)]
+// CHECK:STDOUT:     %.loc26_14.3: %I2.type = converted @J2.%Self, <error> [concrete = <error>]
 // CHECK:STDOUT:     %U2.ref: <error> = name_ref U2, <error> [concrete = <error>]
 // CHECK:STDOUT:     %return.param: ref <error> = out_param call_param0
 // CHECK:STDOUT:     %return: ref <error> = return_slot %return.param
@@ -514,7 +521,7 @@ interface C {
 // CHECK:STDOUT:   %V.loc11_14.2: %J2.type = bind_symbolic_name V, 0 [symbolic = %V.loc11_14.2 (constants.%V)]
 // CHECK:STDOUT:   %V.patt.loc11_14.2: %J2.type = symbolic_binding_pattern V, 0 [symbolic = %V.patt.loc11_14.2 (constants.%V.patt)]
 // CHECK:STDOUT:   %V.as_type.loc11_22.2: type = facet_access_type %V.loc11_14.2 [symbolic = %V.as_type.loc11_22.2 (constants.%V.as_type)]
-// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (constants.%empty_tuple.type), @impl(%V.loc11_14.2) [symbolic = %impl_witness (constants.%impl_witness)]
+// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (constants.%empty_tuple.type), @impl(%V.loc11_14.2) [symbolic = %impl_witness (constants.%impl_witness.ec95d0.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:
@@ -528,12 +535,15 @@ interface C {
 // 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:   %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)]() -> @Convert.%Dest (%Dest);
+// 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 @F2(@J2.%Self: %J2.type) {
+// CHECK:STDOUT:   %Self: %J2.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.541)]
+// CHECK:STDOUT:   %Self.as_type.loc26_14.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc26_14.1 (constants.%Self.as_type.f5c)]
+// CHECK:STDOUT:
 // CHECK:STDOUT:   fn() -> <error>;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -545,11 +555,18 @@ interface C {
 // CHECK:STDOUT:   %V.loc11_14.2 => constants.%V
 // CHECK:STDOUT:   %V.patt.loc11_14.2 => constants.%V
 // CHECK:STDOUT:   %V.as_type.loc11_22.2 => constants.%V.as_type
-// CHECK:STDOUT:   %impl_witness => constants.%impl_witness
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.ec95d0.1
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @impl(%V.loc11_14.2) {}
 // CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(constants.%Self.541) {
+// CHECK:STDOUT:   %V.loc11_14.2 => constants.%Self.541
+// CHECK:STDOUT:   %V.patt.loc11_14.2 => constants.%Self.541
+// CHECK:STDOUT:   %V.as_type.loc11_22.2 => constants.%Self.as_type.f5c
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.ec95d0.2
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
 // CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
 // CHECK:STDOUT:   %Dest => constants.%Dest
 // CHECK:STDOUT:   %Dest.patt => constants.%Dest
@@ -563,20 +580,7 @@ interface C {
 // 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.%J2.type) {
-// CHECK:STDOUT:   %Dest => constants.%J2.type
-// CHECK:STDOUT:   %Dest.patt => constants.%J2.type
-// CHECK:STDOUT:
-// CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.40d
-// CHECK:STDOUT:   %Self => constants.%Self.519
-// CHECK:STDOUT:   %Convert.type => constants.%Convert.type.099
-// CHECK:STDOUT:   %Convert => constants.%Convert.7ee
-// CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.4e8
-// CHECK:STDOUT:   %assoc0 => constants.%assoc0.78f
+// CHECK:STDOUT:   %Self.as_type => constants.%Self.as_type.40a
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @ImplicitAs(constants.%I2.type) {
@@ -592,7 +596,10 @@ interface C {
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.76a
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @F2(constants.%Self.541) {}
+// CHECK:STDOUT: specific @F2(constants.%Self.541) {
+// CHECK:STDOUT:   %Self => constants.%Self.541
+// CHECK:STDOUT:   %Self.as_type.loc26_14.1 => constants.%Self.as_type.f5c
+// CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: --- fail_call_method_alias.carbon
 // CHECK:STDOUT:

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

@@ -510,6 +510,10 @@ fn G(T:! Generic(B)) {
 // CHECK:STDOUT: specific @Generic(constants.%B) {
 // CHECK:STDOUT:   %T.loc4_19.2 => constants.%B
 // CHECK:STDOUT:   %T.patt.loc4_19.2 => constants.%B
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Generic.type => constants.%Generic.type.4ce
+// CHECK:STDOUT:   %Self.2 => constants.%Self
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @G(constants.%T.bae) {

toolchain/check/testdata/where_expr/equal_rewrite.carbon

@@ -62,7 +62,7 @@ fn Reversed(N:! J where .L = bool and .K = ()) {
   Alphabetical(N);
 }
 
-// --- fail_rewrites_mismatch_right.carbon
+// --- todo_fail_rewrites_mismatch_right.carbon
 
 library "[[@TEST_NAME]]";
 
@@ -73,20 +73,11 @@ interface O {
 fn WithInteger(Q:! O where .P = i32) {}
 
 fn WithBool(R:! O where .P = bool) {
-  // CHECK:STDERR: fail_rewrites_mismatch_right.carbon:[[@LINE+10]]:3: error: cannot implicitly convert type `R` that implements `O where .(O.P) = bool` into type implementing `O where .(O.P) = i32` [ConversionFailureFacetToFacet]
-  // CHECK:STDERR:   WithInteger(R);
-  // CHECK:STDERR:   ^~~~~~~~~~~~~~
-  // CHECK:STDERR: fail_rewrites_mismatch_right.carbon:[[@LINE+7]]:3: note: type `O where .(O.P) = bool` does not implement interface `Core.ImplicitAs(O where .(O.P) = i32)` [MissingImplInMemberAccessNote]
-  // CHECK:STDERR:   WithInteger(R);
-  // CHECK:STDERR:   ^~~~~~~~~~~~~~
-  // CHECK:STDERR: fail_rewrites_mismatch_right.carbon:[[@LINE-9]]:16: note: initializing generic parameter `Q` declared here [InitializingGenericParam]
-  // CHECK:STDERR: fn WithInteger(Q:! O where .P = i32) {}
-  // CHECK:STDERR:                ^
-  // CHECK:STDERR:
+  // TODO: This should fail.
   WithInteger(R);
 }
 
-// --- fail_rewrites_mismatch_left.carbon
+// --- todo_fail_rewrites_mismatch_left.carbon
 
 library "[[@TEST_NAME]]";
 
@@ -98,16 +89,7 @@ interface S {
 fn WithT(V:! S where .T = ()) {}
 
 fn WithU(W:! S where .U = ()) {
-  // CHECK:STDERR: fail_rewrites_mismatch_left.carbon:[[@LINE+10]]:3: error: cannot implicitly convert type `W` that implements `S where .(S.U) = ()` into type implementing `S where .(S.T) = ()` [ConversionFailureFacetToFacet]
-  // CHECK:STDERR:   WithT(W);
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR: fail_rewrites_mismatch_left.carbon:[[@LINE+7]]:3: note: type `S where .(S.U) = ()` does not implement interface `Core.ImplicitAs(S where .(S.T) = ())` [MissingImplInMemberAccessNote]
-  // CHECK:STDERR:   WithT(W);
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR: fail_rewrites_mismatch_left.carbon:[[@LINE-9]]:10: note: initializing generic parameter `V` declared here [InitializingGenericParam]
-  // CHECK:STDERR: fn WithT(V:! S where .T = ()) {}
-  // CHECK:STDERR:          ^
-  // CHECK:STDERR:
+  // TODO: This should fail.
   WithT(W);
 }
 
@@ -847,17 +829,18 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @Alphabetical(@Reversed.%N.loc11_13.2) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: --- fail_rewrites_mismatch_right.carbon
+// CHECK:STDOUT: --- todo_fail_rewrites_mismatch_right.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {
 // CHECK:STDOUT:   %O.type: type = facet_type <@O> [concrete]
-// CHECK:STDOUT:   %Self.040: %O.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Self: %O.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %O.assoc_type: type = assoc_entity_type %O.type [concrete]
-// CHECK:STDOUT:   %assoc0.0e4: %O.assoc_type = assoc_entity element0, @O.%P [concrete]
+// CHECK:STDOUT:   %assoc0: %O.assoc_type = assoc_entity element0, @O.%P [concrete]
 // CHECK:STDOUT:   %.Self: %O.type = bind_symbolic_name .Self [symbolic_self]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %.Self.as_type: type = facet_access_type %.Self [symbolic_self]
 // CHECK:STDOUT:   %.Self.as_wit.iface0: <witness> = facet_access_witness %.Self, element0 [symbolic_self]
-// CHECK:STDOUT:   %O.facet: %O.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
+// CHECK:STDOUT:   %O.facet.22f: %O.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0, element0 [symbolic_self]
 // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete]
 // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
@@ -873,13 +856,16 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %R.patt: %O_where.type.741 = symbolic_binding_pattern R, 0 [symbolic]
 // CHECK:STDOUT:   %WithBool.type: type = fn_type @WithBool [concrete]
 // CHECK:STDOUT:   %WithBool: %WithBool.type = struct_value () [concrete]
+// CHECK:STDOUT:   %R.as_wit.iface0: <witness> = facet_access_witness %R, element0 [symbolic]
+// CHECK:STDOUT:   %R.as_type: type = facet_access_type %R [symbolic]
+// CHECK:STDOUT:   %O.facet.3ed: %O_where.type.fe1 = facet_value %R.as_type, (%R.as_wit.iface0) [symbolic]
+// CHECK:STDOUT:   %WithInteger.specific_fn: <specific function> = specific_function %WithInteger, @WithInteger(%O.facet.3ed) [symbolic]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
 // CHECK:STDOUT:     .Int = %Core.Int
 // CHECK:STDOUT:     .Bool = %Core.Bool
-// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
@@ -901,7 +887,7 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:       %O.ref: type = name_ref O, file.%O.decl [concrete = constants.%O.type]
 // CHECK:STDOUT:       %.Self: %O.type = bind_symbolic_name .Self [symbolic_self = constants.%.Self]
 // CHECK:STDOUT:       %.Self.ref: %O.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
-// CHECK:STDOUT:       %P.ref: %O.assoc_type = name_ref P, @P.%assoc0 [concrete = constants.%assoc0.0e4]
+// CHECK:STDOUT:       %P.ref: %O.assoc_type = name_ref P, @P.%assoc0 [concrete = constants.%assoc0]
 // CHECK:STDOUT:       %.Self.as_type: type = facet_access_type %.Self.ref [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.loc8_28: type = converted %.Self.ref, %.Self.as_type [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.Self.as_wit.iface0: <witness> = facet_access_witness %.Self.ref, element0 [symbolic_self = constants.%.Self.as_wit.iface0]
@@ -921,7 +907,7 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:       %O.ref: type = name_ref O, file.%O.decl [concrete = constants.%O.type]
 // CHECK:STDOUT:       %.Self: %O.type = bind_symbolic_name .Self [symbolic_self = constants.%.Self]
 // CHECK:STDOUT:       %.Self.ref: %O.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
-// CHECK:STDOUT:       %P.ref: %O.assoc_type = name_ref P, @P.%assoc0 [concrete = constants.%assoc0.0e4]
+// CHECK:STDOUT:       %P.ref: %O.assoc_type = name_ref P, @P.%assoc0 [concrete = constants.%assoc0]
 // CHECK:STDOUT:       %.Self.as_type: type = facet_access_type %.Self.ref [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.loc10_25: type = converted %.Self.ref, %.Self.as_type [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.Self.as_wit.iface0: <witness> = facet_access_witness %.Self.ref, element0 [symbolic_self = constants.%.Self.as_wit.iface0]
@@ -938,9 +924,9 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @O {
-// CHECK:STDOUT:   %Self: %O.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.040]
+// CHECK:STDOUT:   %Self: %O.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
 // CHECK:STDOUT:   %P: type = assoc_const_decl @P [concrete] {
-// CHECK:STDOUT:     %assoc0: %O.assoc_type = assoc_entity element0, @O.%P [concrete = constants.%assoc0.0e4]
+// CHECK:STDOUT:     %assoc0: %O.assoc_type = assoc_entity element0, @O.%P [concrete = constants.%assoc0]
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:
 // CHECK:STDOUT: !members:
@@ -970,19 +956,28 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %R.patt.loc10_13.2: %O_where.type.741 = symbolic_binding_pattern R, 0 [symbolic = %R.patt.loc10_13.2 (constants.%R.patt)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %R.as_wit.iface0.loc12_16.2: <witness> = facet_access_witness %R.loc10_13.2, element0 [symbolic = %R.as_wit.iface0.loc12_16.2 (constants.%R.as_wit.iface0)]
+// CHECK:STDOUT:   %R.as_type.loc12_16.2: type = facet_access_type %R.loc10_13.2 [symbolic = %R.as_type.loc12_16.2 (constants.%R.as_type)]
+// CHECK:STDOUT:   %O.facet.loc12_16.2: %O_where.type.fe1 = facet_value %R.as_type.loc12_16.2, (%R.as_wit.iface0.loc12_16.2) [symbolic = %O.facet.loc12_16.2 (constants.%O.facet.3ed)]
+// CHECK:STDOUT:   %WithInteger.specific_fn.loc12_3.2: <specific function> = specific_function constants.%WithInteger, @WithInteger(%O.facet.loc12_16.2) [symbolic = %WithInteger.specific_fn.loc12_3.2 (constants.%WithInteger.specific_fn)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   fn(%R.patt.loc10_13.1: %O_where.type.741) {
 // CHECK:STDOUT:   !entry:
 // CHECK:STDOUT:     %WithInteger.ref: %WithInteger.type = name_ref WithInteger, file.%WithInteger.decl [concrete = constants.%WithInteger]
 // CHECK:STDOUT:     %R.ref: %O_where.type.741 = name_ref R, %R.loc10_13.1 [symbolic = %R.loc10_13.2 (constants.%R)]
-// CHECK:STDOUT:     %.loc21: %O_where.type.fe1 = converted %R.ref, <error> [concrete = <error>]
+// CHECK:STDOUT:     %R.as_wit.iface0.loc12_16.1: <witness> = facet_access_witness constants.%R, element0 [symbolic = %R.as_wit.iface0.loc12_16.2 (constants.%R.as_wit.iface0)]
+// CHECK:STDOUT:     %R.as_type.loc12_16.1: type = facet_access_type constants.%R [symbolic = %R.as_type.loc12_16.2 (constants.%R.as_type)]
+// CHECK:STDOUT:     %O.facet.loc12_16.1: %O_where.type.fe1 = facet_value %R.as_type.loc12_16.1, (%R.as_wit.iface0.loc12_16.1) [symbolic = %O.facet.loc12_16.2 (constants.%O.facet.3ed)]
+// CHECK:STDOUT:     %.loc12: %O_where.type.fe1 = converted %R.ref, %O.facet.loc12_16.1 [symbolic = %O.facet.loc12_16.2 (constants.%O.facet.3ed)]
+// CHECK:STDOUT:     %WithInteger.specific_fn.loc12_3.1: <specific function> = specific_function %WithInteger.ref, @WithInteger(constants.%O.facet.3ed) [symbolic = %WithInteger.specific_fn.loc12_3.2 (constants.%WithInteger.specific_fn)]
+// CHECK:STDOUT:     %WithInteger.call: init %empty_tuple.type = call %WithInteger.specific_fn.loc12_3.1()
 // CHECK:STDOUT:     return
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @P(constants.%Self.040) {}
+// CHECK:STDOUT: specific @P(constants.%Self) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @P(constants.%O.facet) {}
+// CHECK:STDOUT: specific @P(constants.%O.facet.22f) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @WithInteger(constants.%Q) {
 // CHECK:STDOUT:   %Q.loc8_16.2 => constants.%Q
@@ -994,19 +989,28 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %R.patt.loc10_13.2 => constants.%R
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: --- fail_rewrites_mismatch_left.carbon
+// CHECK:STDOUT: specific @WithInteger(constants.%O.facet.3ed) {
+// CHECK:STDOUT:   %Q.loc8_16.2 => constants.%O.facet.3ed
+// CHECK:STDOUT:   %Q.patt.loc8_16.2 => constants.%O.facet.3ed
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @WithInteger(@WithBool.%O.facet.loc12_16.2) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- todo_fail_rewrites_mismatch_left.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {
 // CHECK:STDOUT:   %S.type: type = facet_type <@S> [concrete]
-// CHECK:STDOUT:   %Self.b33: %S.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %Self: %S.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %S.assoc_type: type = assoc_entity_type %S.type [concrete]
-// CHECK:STDOUT:   %assoc0.720: %S.assoc_type = assoc_entity element0, @S.%T [concrete]
+// CHECK:STDOUT:   %assoc0: %S.assoc_type = assoc_entity element0, @S.%T [concrete]
 // CHECK:STDOUT:   %assoc1: %S.assoc_type = assoc_entity element1, @S.%U [concrete]
 // CHECK:STDOUT:   %.Self: %S.type = bind_symbolic_name .Self [symbolic_self]
 // CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %.Self.as_type: type = facet_access_type %.Self [symbolic_self]
 // CHECK:STDOUT:   %.Self.as_wit.iface0: <witness> = facet_access_witness %.Self, element0 [symbolic_self]
-// CHECK:STDOUT:   %S.facet: %S.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
+// CHECK:STDOUT:   %S.facet.140: %S.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0, element0 [symbolic_self]
 // CHECK:STDOUT:   %S_where.type.15b: type = facet_type <@S where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %V: %S_where.type.15b = bind_symbolic_name V, 0 [symbolic]
@@ -1019,11 +1023,14 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %W.patt: %S_where.type.0be = symbolic_binding_pattern W, 0 [symbolic]
 // CHECK:STDOUT:   %WithU.type: type = fn_type @WithU [concrete]
 // CHECK:STDOUT:   %WithU: %WithU.type = struct_value () [concrete]
+// CHECK:STDOUT:   %W.as_wit.iface0: <witness> = facet_access_witness %W, element0 [symbolic]
+// CHECK:STDOUT:   %W.as_type: type = facet_access_type %W [symbolic]
+// CHECK:STDOUT:   %S.facet.6fe: %S_where.type.15b = facet_value %W.as_type, (%W.as_wit.iface0) [symbolic]
+// CHECK:STDOUT:   %WithT.specific_fn: <specific function> = specific_function %WithT, @WithT(%S.facet.6fe) [symbolic]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
@@ -1045,7 +1052,7 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:       %S.ref: type = name_ref S, file.%S.decl [concrete = constants.%S.type]
 // CHECK:STDOUT:       %.Self: %S.type = bind_symbolic_name .Self [symbolic_self = constants.%.Self]
 // CHECK:STDOUT:       %.Self.ref: %S.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
-// CHECK:STDOUT:       %T.ref: %S.assoc_type = name_ref T, @T.%assoc0 [concrete = constants.%assoc0.720]
+// CHECK:STDOUT:       %T.ref: %S.assoc_type = name_ref T, @T.%assoc0 [concrete = constants.%assoc0]
 // CHECK:STDOUT:       %.Self.as_type: type = facet_access_type %.Self.ref [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.loc9_22: type = converted %.Self.ref, %.Self.as_type [symbolic_self = constants.%.Self.as_type]
 // CHECK:STDOUT:       %.Self.as_wit.iface0: <witness> = facet_access_witness %.Self.ref, element0 [symbolic_self = constants.%.Self.as_wit.iface0]
@@ -1081,9 +1088,9 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @S {
-// CHECK:STDOUT:   %Self: %S.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.b33]
+// CHECK:STDOUT:   %Self: %S.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {
-// CHECK:STDOUT:     %assoc0: %S.assoc_type = assoc_entity element0, @S.%T [concrete = constants.%assoc0.720]
+// CHECK:STDOUT:     %assoc0: %S.assoc_type = assoc_entity element0, @S.%T [concrete = constants.%assoc0]
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %U: type = assoc_const_decl @U [concrete] {
 // CHECK:STDOUT:     %assoc1: %S.assoc_type = assoc_entity element1, @S.%U [concrete = constants.%assoc1]
@@ -1121,34 +1128,52 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %W.patt.loc11_10.2: %S_where.type.0be = symbolic_binding_pattern W, 0 [symbolic = %W.patt.loc11_10.2 (constants.%W.patt)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %W.as_wit.iface0.loc13_10.2: <witness> = facet_access_witness %W.loc11_10.2, element0 [symbolic = %W.as_wit.iface0.loc13_10.2 (constants.%W.as_wit.iface0)]
+// CHECK:STDOUT:   %W.as_type.loc13_10.2: type = facet_access_type %W.loc11_10.2 [symbolic = %W.as_type.loc13_10.2 (constants.%W.as_type)]
+// CHECK:STDOUT:   %S.facet.loc13_10.2: %S_where.type.15b = facet_value %W.as_type.loc13_10.2, (%W.as_wit.iface0.loc13_10.2) [symbolic = %S.facet.loc13_10.2 (constants.%S.facet.6fe)]
+// CHECK:STDOUT:   %WithT.specific_fn.loc13_3.2: <specific function> = specific_function constants.%WithT, @WithT(%S.facet.loc13_10.2) [symbolic = %WithT.specific_fn.loc13_3.2 (constants.%WithT.specific_fn)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   fn(%W.patt.loc11_10.1: %S_where.type.0be) {
 // CHECK:STDOUT:   !entry:
 // CHECK:STDOUT:     %WithT.ref: %WithT.type = name_ref WithT, file.%WithT.decl [concrete = constants.%WithT]
 // CHECK:STDOUT:     %W.ref: %S_where.type.0be = name_ref W, %W.loc11_10.1 [symbolic = %W.loc11_10.2 (constants.%W)]
-// CHECK:STDOUT:     %.loc22: %S_where.type.15b = converted %W.ref, <error> [concrete = <error>]
+// CHECK:STDOUT:     %W.as_wit.iface0.loc13_10.1: <witness> = facet_access_witness constants.%W, element0 [symbolic = %W.as_wit.iface0.loc13_10.2 (constants.%W.as_wit.iface0)]
+// CHECK:STDOUT:     %W.as_type.loc13_10.1: type = facet_access_type constants.%W [symbolic = %W.as_type.loc13_10.2 (constants.%W.as_type)]
+// CHECK:STDOUT:     %S.facet.loc13_10.1: %S_where.type.15b = facet_value %W.as_type.loc13_10.1, (%W.as_wit.iface0.loc13_10.1) [symbolic = %S.facet.loc13_10.2 (constants.%S.facet.6fe)]
+// CHECK:STDOUT:     %.loc13: %S_where.type.15b = converted %W.ref, %S.facet.loc13_10.1 [symbolic = %S.facet.loc13_10.2 (constants.%S.facet.6fe)]
+// CHECK:STDOUT:     %WithT.specific_fn.loc13_3.1: <specific function> = specific_function %WithT.ref, @WithT(constants.%S.facet.6fe) [symbolic = %WithT.specific_fn.loc13_3.2 (constants.%WithT.specific_fn)]
+// CHECK:STDOUT:     %WithT.call: init %empty_tuple.type = call %WithT.specific_fn.loc13_3.1()
 // CHECK:STDOUT:     return
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @T(constants.%Self.b33) {}
+// CHECK:STDOUT: specific @T(constants.%Self) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @U(constants.%Self.b33) {}
+// CHECK:STDOUT: specific @U(constants.%Self) {}
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @T(constants.%S.facet) {}
+// CHECK:STDOUT: specific @T(constants.%S.facet.140) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @WithT(constants.%V) {
 // CHECK:STDOUT:   %V.loc9_10.2 => constants.%V
 // CHECK:STDOUT:   %V.patt.loc9_10.2 => constants.%V
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: specific @U(constants.%S.facet) {}
+// CHECK:STDOUT: specific @U(constants.%S.facet.140) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @WithU(constants.%W) {
 // CHECK:STDOUT:   %W.loc11_10.2 => constants.%W
 // CHECK:STDOUT:   %W.patt.loc11_10.2 => constants.%W
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
+// CHECK:STDOUT: specific @WithT(constants.%S.facet.6fe) {
+// CHECK:STDOUT:   %V.loc9_10.2 => constants.%S.facet.6fe
+// CHECK:STDOUT:   %V.patt.loc9_10.2 => constants.%S.facet.6fe
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @WithT(@WithU.%S.facet.loc13_10.2) {}
+// CHECK:STDOUT:
 // CHECK:STDOUT: --- fail_import_rewrites.carbon
 // CHECK:STDOUT:
 // CHECK:STDOUT: constants {