Facet values (like type values) can be copied around at runtime (#5242)

Give them a value representation of copy, and allow conversions between
two facet values of the same type to work.

Convert was assuming that facet values are compile time constants, but
thye can also be runtime values. In that case, we have no support for
converting to a different facet value of a different facet type. But if
the types are equal then it's all fine.

In theory it seems that we should be able to convert if the target facet
type can be found through the source value's FacetType. But currently
that happens through impl lookup and it requires constant values. Adding
a test for this.

Related to #5241

toolchain/check/convert.cpp

@@ -1015,13 +1015,20 @@ static auto PerformBuiltinConversion(Context& context, SemIR::LocId loc_id,
     }
   }
 
-  if (sem_ir.types().Is<SemIR::FacetType>(target.type_id) &&
+  if (target.type_id != value_type_id &&
+      sem_ir.types().Is<SemIR::FacetType>(target.type_id) &&
       (sem_ir.types().Is<SemIR::TypeType>(value_type_id) ||
        sem_ir.types().Is<SemIR::FacetType>(value_type_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 const_value_id = sem_ir.constant_values().GetConstantInstId(value_id);
+    // TODO: Runtime facet values should be allowed to convert based on their
+    // FacetTypes, but we assume constant values for impl lookup at the moment.
+    if (!const_value_id.has_value()) {
+      context.TODO(loc_id, "conversion of runtime facet value");
+      const_value_id = SemIR::ErrorInst::SingletonInstId;
+    }
 
     if (auto facet_access_type_inst =
             sem_ir.insts().TryGetAs<SemIR::FacetAccessType>(const_value_id)) {

toolchain/check/testdata/facet/min_prelude/convert_class_type_to_facet_type.carbon

@@ -30,11 +30,11 @@ fn F() {
 // 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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness () [concrete]
 // CHECK:STDOUT:   %A: %Animal.type = bind_symbolic_name A, 0 [symbolic]
 // CHECK:STDOUT:   %A.patt: %Animal.type = symbolic_binding_pattern A, 0 [symbolic]
 // CHECK:STDOUT:   %WalkAnimal.type: type = fn_type @WalkAnimal [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %WalkAnimal: %WalkAnimal.type = struct_value () [concrete]
 // CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
 // CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]

toolchain/check/testdata/facet/min_prelude/convert_facet_value_as_type_knows_original_type.carbon

@@ -68,11 +68,11 @@ fn F() {
 // 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:   %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:   %empty_tuple.type: type = tuple_type () [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]

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

@@ -383,10 +383,10 @@ fn CallsWithTypeExplicit(U:! type) {
 // CHECK:STDOUT:   %Self.7ee: %Tame.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %BitAnd.type: type = facet_type <@BitAnd> [concrete]
 // CHECK:STDOUT:   %Self.25f: %BitAnd.type = bind_symbolic_name Self, 0 [symbolic]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %BitAnd.assoc_type: type = assoc_entity_type %BitAnd.type [concrete]
 // CHECK:STDOUT:   %assoc0: %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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Self.as_type: 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]
@@ -694,13 +694,13 @@ fn CallsWithTypeExplicit(U:! type) {
 // CHECK:STDOUT:   %A: %Animal.type = bind_symbolic_name A, 0 [symbolic]
 // CHECK:STDOUT:   %A.patt: %Animal.type = symbolic_binding_pattern A, 0 [symbolic]
 // CHECK:STDOUT:   %A.as_type: type = facet_access_type %A [symbolic]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.110: <witness> = impl_witness (), @impl.e7b(%A) [symbolic]
 // 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: %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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Self.as_type: 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]

toolchain/check/testdata/facet/min_prelude/convert_facet_value_value_to_blanket_impl.carbon

@@ -30,12 +30,12 @@ fn HandleAnimal[T:! Animal](a: T) { Feed(a); }
 // CHECK:STDOUT:   %A: %Animal.type = bind_symbolic_name A, 0 [symbolic]
 // CHECK:STDOUT:   %A.patt: %Animal.type = symbolic_binding_pattern A, 0 [symbolic]
 // CHECK:STDOUT:   %A.as_type: type = facet_access_type %A [symbolic]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.11010a.1: <witness> = impl_witness (), @impl(%A) [symbolic]
 // CHECK:STDOUT:   %T.1b5: %Eats.type = bind_symbolic_name T, 0 [symbolic]
 // CHECK:STDOUT:   %T.patt.6be: %Eats.type = symbolic_binding_pattern T, 0 [symbolic]
 // CHECK:STDOUT:   %T.as_type.27d: type = facet_access_type %T.1b5 [symbolic]
 // CHECK:STDOUT:   %Feed.type: type = fn_type @Feed [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Feed: %Feed.type = struct_value () [concrete]
 // CHECK:STDOUT:   %require_complete.c75: <witness> = require_complete_type %T.as_type.27d [symbolic]
 // CHECK:STDOUT:   %T.fd4: %Animal.type = bind_symbolic_name T, 0 [symbolic]

toolchain/check/testdata/facet/min_prelude/convert_facet_value_value_to_generic_facet_value_value.carbon

@@ -42,13 +42,13 @@ fn F() {
 // CHECK:STDOUT:   %Grass: type = class_type @Grass [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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.1bc: <witness> = impl_witness () [concrete]
 // CHECK:STDOUT:   %Animal.type: type = facet_type <@Animal> [concrete]
 // CHECK:STDOUT:   %Self.fd4: %Animal.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %Food.8b3: type = bind_symbolic_name Food, 0 [symbolic]
 // CHECK:STDOUT:   %Food.patt.e01: type = symbolic_binding_pattern Food, 0 [symbolic]
 // CHECK:STDOUT:   %Eats.type.ba2: type = generic_interface_type @Eats [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Eats.generic: %Eats.type.ba2 = struct_value () [concrete]
 // CHECK:STDOUT:   %Eats.type.6c0: type = facet_type <@Eats, @Eats(%Food.8b3)> [symbolic]
 // CHECK:STDOUT:   %Self.4eb: %Eats.type.6c0 = bind_symbolic_name Self, 1 [symbolic]

toolchain/check/testdata/facet/min_prelude/convert_interface.carbon

@@ -28,9 +28,9 @@ fn G() { F(Animal); }
 // 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:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
 // CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
 // CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]

toolchain/check/testdata/facet/min_prelude/runtime_value.carbon

@@ -0,0 +1,624 @@
+// 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/facet/min_prelude/runtime_value.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/facet/min_prelude/runtime_value.carbon
+
+// --- facet_value_copy_from_reference.carbon
+library "[[@TEST_NAME]]";
+
+interface I {}
+
+class C {
+  var i: I;
+}
+
+fn F(c: C) {
+  // Member access produces a reference, which is copied into the value
+  // binding.
+  let a: I = c.i;
+}
+
+// --- fail_todo_facet_copy_narrowing_from_reference.carbon
+library "[[@TEST_NAME]]";
+
+interface I {}
+interface J {}
+
+class C {
+  var ij: I & J;
+}
+
+fn F(c: C) {
+  // Member access produces a reference, which is copied into the value
+  // binding.
+  // CHECK:STDERR: fail_todo_facet_copy_narrowing_from_reference.carbon:[[@LINE+4]]:14: error: semantics TODO: `conversion of runtime facet value` [SemanticsTodo]
+  // CHECK:STDERR:   let a: I = c.ij;
+  // CHECK:STDERR:              ^~~~
+  // CHECK:STDERR:
+  let a: I = c.ij;
+}
+
+// CHECK:STDOUT: --- facet_value_copy_from_reference.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %C: type = class_type @C [concrete]
+// CHECK:STDOUT:   %C.elem: type = unbound_element_type %C, %I.type [concrete]
+// CHECK:STDOUT:   %struct_type.i: type = struct_type {.i: %I.type} [concrete]
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.i [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [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:     .I = %I.decl
+// CHECK:STDOUT:     .C = %C.decl
+// CHECK:STDOUT:     .F = %F.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
+// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
+// CHECK:STDOUT:     %c.patt: %C = binding_pattern c
+// CHECK:STDOUT:     %c.param_patt: %C = value_param_pattern %c.patt, call_param0
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %c.param: %C = value_param call_param0
+// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:     %c: %C = bind_name c, %c.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @I {
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: class @C {
+// CHECK:STDOUT:   %.loc6_8: %C.elem = field_decl i, element0 [concrete]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %.loc6_3: %C.elem = var_pattern %.loc6_8
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %.var: ref %C.elem = var <none>
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.i [concrete = constants.%complete_type]
+// CHECK:STDOUT:   complete_type_witness = %complete_type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = constants.%C
+// CHECK:STDOUT:   .I = <poisoned>
+// CHECK:STDOUT:   .i = %.loc6_8
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F(%c.param_patt: %C) {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %a.patt: %I.type = binding_pattern a
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c.ref: %C = name_ref c, %c
+// CHECK:STDOUT:   %i.ref: %C.elem = name_ref i, @C.%.loc6_8 [concrete = @C.%.loc6_8]
+// CHECK:STDOUT:   %.loc12_15.1: ref %I.type = class_element_access %c.ref, element0
+// CHECK:STDOUT:   %.loc12_15.2: %I.type = bind_value %.loc12_15.1
+// CHECK:STDOUT:   %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
+// CHECK:STDOUT:   %a: %I.type = bind_name a, %.loc12_15.2
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_todo_facet_copy_narrowing_from_reference.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
+// CHECK:STDOUT:   %Self.826: %I.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %J.type: type = facet_type <@J> [concrete]
+// CHECK:STDOUT:   %Self.ccd: %J.type = bind_symbolic_name Self, 0 [symbolic]
+// CHECK:STDOUT:   %C: type = class_type @C [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: %BitAnd.assoc_type = assoc_entity element0, imports.%Core.import_ref.a93 [concrete]
+// CHECK:STDOUT:   %Self.as_type: 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(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type.f99: type = fn_type @Op.2, @impl(%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(type) [concrete]
+// CHECK:STDOUT:   %impl_witness.b81: <witness> = impl_witness (imports.%Core.import_ref.bd4), @impl(%T) [symbolic]
+// CHECK:STDOUT:   %Op.type.eb8: type = fn_type @Op.2, @impl(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:   %facet_type: type = facet_type <@I & @J> [concrete]
+// CHECK:STDOUT:   %C.elem: type = unbound_element_type %C, %facet_type [concrete]
+// CHECK:STDOUT:   %struct_type.ij: type = struct_type {.ij: %facet_type} [concrete]
+// CHECK:STDOUT:   %complete_type.559: <witness> = complete_type_witness %struct_type.ij [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
+// CHECK:STDOUT:     .BitAnd = %Core.BitAnd
+// CHECK:STDOUT:     import Core//prelude
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.ad0 = import_ref Core//prelude, inst101 [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.08d: %BitAnd.assoc_type = import_ref Core//prelude, loc18_41, loaded [concrete = constants.%assoc0]
+// CHECK:STDOUT:   %Core.Op = import_ref Core//prelude, Op, unloaded
+// CHECK:STDOUT:   %Core.import_ref.040: %BitAnd.type = import_ref Core//prelude, inst101 [no loc], loaded [symbolic = constants.%Self.25f]
+// CHECK:STDOUT:   %Core.import_ref.51c: <witness> = import_ref Core//prelude, loc21_36, loaded [symbolic = @impl.%impl_witness (constants.%impl_witness.b81)]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.1: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.%T (constants.%T)]
+// CHECK:STDOUT:   %Core.import_ref.583: type = import_ref Core//prelude, loc21_24, loaded [symbolic = @impl.%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.%Op.type (%Op.type.f99) = import_ref Core//prelude, loc22_42, loaded [symbolic = @impl.%Op (constants.%Op.05a)]
+// CHECK:STDOUT:   %Core.import_ref.5ab3ec.2: type = import_ref Core//prelude, loc21_14, loaded [symbolic = @impl.%T (constants.%T)]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
+// CHECK:STDOUT:     .Core = imports.%Core
+// CHECK:STDOUT:     .I = %I.decl
+// CHECK:STDOUT:     .J = %J.decl
+// CHECK:STDOUT:     .C = %C.decl
+// CHECK:STDOUT:     .F = %F.decl
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import = import Core
+// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
+// CHECK:STDOUT:   %J.decl: type = interface_decl @J [concrete = constants.%J.type] {} {}
+// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
+// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
+// CHECK:STDOUT:     %c.patt: %C = binding_pattern c
+// CHECK:STDOUT:     %c.param_patt: %C = value_param_pattern %c.patt, call_param0
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     %c.param: %C = value_param call_param0
+// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:     %c: %C = bind_name c, %c.param
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @I {
+// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.826]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @J {
+// CHECK:STDOUT:   %Self: %J.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.ccd]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = %Self
+// CHECK:STDOUT:   witness = ()
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: interface @BitAnd [from "include_files/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 impl @impl(imports.%Core.import_ref.5ab3ec.1: type) [from "include_files/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(%T) [symbolic = %impl_witness (constants.%impl_witness.db8)]
+// CHECK:STDOUT:
+// CHECK:STDOUT: !definition:
+// CHECK:STDOUT:   %Op.type: type = fn_type @Op.2, @impl(%T) [symbolic = %Op.type (constants.%Op.type.f99)]
+// CHECK:STDOUT:   %Op: @impl.%Op.type (%Op.type.f99) = struct_value () [symbolic = %Op (constants.%Op.05a)]
+// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type @impl.%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 @C {
+// CHECK:STDOUT:   %.loc7_9: %C.elem = field_decl ij, element0 [concrete]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %.loc7_3: %C.elem = var_pattern %.loc7_9
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %.var: ref %C.elem = var <none>
+// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.ij [concrete = constants.%complete_type.559]
+// CHECK:STDOUT:   complete_type_witness = %complete_type
+// CHECK:STDOUT:
+// CHECK:STDOUT: !members:
+// CHECK:STDOUT:   .Self = constants.%C
+// CHECK:STDOUT:   .I = <poisoned>
+// CHECK:STDOUT:   .J = <poisoned>
+// CHECK:STDOUT:   .ij = %.loc7_9
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: generic fn @Op.1(imports.%Core.import_ref.040: %BitAnd.type) [from "include_files/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)]
+// CHECK:STDOUT:
+// 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 "include_files/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: fn @F(%c.param_patt: %C) {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %a.patt: %I.type = binding_pattern a
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %c.ref: %C = name_ref c, %c
+// CHECK:STDOUT:   %ij.ref: %C.elem = name_ref ij, @C.%.loc7_9 [concrete = @C.%.loc7_9]
+// CHECK:STDOUT:   %.loc17_15.1: ref %facet_type = class_element_access %c.ref, element0
+// CHECK:STDOUT:   %.loc17_15.2: %facet_type = bind_value %.loc17_15.1
+// CHECK:STDOUT:   %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
+// CHECK:STDOUT:   %a: %I.type = bind_name a, <error>
+// CHECK:STDOUT:   return
+// 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
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT:   %T.patt => constants.%T.patt
+// CHECK:STDOUT:   %impl_witness => constants.%impl_witness.db8
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(%T) {}
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @Op.2(constants.%T) {
+// CHECK:STDOUT:   %T => constants.%T
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: specific @impl(type) {
+// CHECK:STDOUT:   %T => type
+// CHECK:STDOUT:   %T.patt => constants.%T.patt
+// 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: --- include_files/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.%As.type (%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.%ImplicitAs.type (%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: @Convert.1.%As.type (%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: @Convert.2.%ImplicitAs.type (%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.patt
+// 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.patt
+// 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.patt
+// 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/impl/min_prelude/forward_decls.carbon

@@ -578,11 +578,11 @@ interface I {
 // CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, @I.%T [concrete]
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %.Self: %I.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:   %I.facet: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%empty_tuple.type) [concrete]
 // CHECK:STDOUT: }
@@ -673,11 +673,11 @@ interface I {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %.Self: %I.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:   %I.facet.d87: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%empty_tuple.type) [concrete]
 // CHECK:STDOUT:   %I.facet.a7f: %I.type = facet_value %C, (%impl_witness) [concrete]
@@ -802,11 +802,11 @@ interface I {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %.Self: %I.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:   %I.facet.d87: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%empty_tuple.type) [concrete]
 // CHECK:STDOUT:   %I.facet.a7f: %I.type = facet_value %C, (%impl_witness) [concrete]
@@ -1581,11 +1581,11 @@ interface I {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %.Self: %I.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:   %I.facet: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (%empty_tuple.type, <error>) [concrete]
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/no_prelude/generic_redeclaration.carbon

@@ -522,9 +522,9 @@ impl forall [T:! type] T as I {
 // CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %T: type = bind_symbolic_name T, 0 [symbolic]
 // CHECK:STDOUT:   %T.patt: type = symbolic_binding_pattern T, 0 [symbolic]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.1f09a1.1: <witness> = impl_witness (), @impl.2caff2.1(%T) [symbolic]
 // CHECK:STDOUT:   %A.type: type = fn_type @A, @impl.2caff2.1(%T) [symbolic]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %A: %A.type = struct_value () [symbolic]
 // CHECK:STDOUT:   %impl_witness.1f09a1.2: <witness> = impl_witness (), @impl.2caff2.2(%T) [symbolic]
 // CHECK:STDOUT:   %B.type: type = fn_type @B, @impl.2caff2.2(%T) [symbolic]

toolchain/check/testdata/impl/no_prelude/import_interface_assoc_const.carbon

@@ -592,7 +592,6 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
 // CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %.Self: %I.type = bind_symbolic_name .Self [symbolic_self]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
 // CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, imports.%Main.import_ref.652 [concrete]
 // CHECK:STDOUT:   %.Self.as_type: type = facet_access_type %.Self [symbolic_self]
@@ -601,6 +600,7 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0, element0 [symbolic_self]
 // CHECK:STDOUT:   %I_where.type.872: type = facet_type <@I where %impl.elem0 = %empty_struct_type> [concrete]
 // CHECK:STDOUT:   %impl_witness.6de: <witness> = impl_witness (%empty_struct_type) [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type.4fe: type = facet_type <@I where %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness.2a6: <witness> = impl_witness (%empty_tuple.type) [concrete]
 // CHECK:STDOUT: }
@@ -960,13 +960,13 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
 // CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %.Self: %I.type = bind_symbolic_name .Self [symbolic_self]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
 // CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, imports.%Main.import_ref.652 [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:   %I.facet: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where %impl.elem0 = %empty_struct_type and %impl.elem0 = %empty_tuple.type> [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (<error>) [concrete]
 // CHECK:STDOUT: }
@@ -1055,13 +1055,13 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
 // CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %.Self: %I.type = bind_symbolic_name .Self [symbolic_self]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
 // CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, imports.%Main.import_ref.652 [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:   %I.facet: %I.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {

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

@@ -267,11 +267,11 @@ interface C {
 // CHECK:STDOUT:   %V.patt: %J2.type = symbolic_binding_pattern V, 0 [symbolic]
 // CHECK:STDOUT:   %V.as_type: type = facet_access_type %V [symbolic]
 // CHECK:STDOUT:   %.Self: %I2.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:   %I2.facet.b82: %I2.type = facet_value %.Self.as_type, (%.Self.as_wit.iface0) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0.71d: type = impl_witness_access %.Self.as_wit.iface0, element0 [symbolic_self]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I2_where.type: type = facet_type <@I2 where %impl.elem0.71d = %empty_tuple.type> [concrete]
 // 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]

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

@@ -67,7 +67,7 @@ var f: ForwardDeclared* = &f_ref.f;
 // CHECK:STDOUT:   %F.type.505: type = fn_type @F.2 [concrete]
 // CHECK:STDOUT:   %F.eb5: %F.type.505 = struct_value () [concrete]
 // CHECK:STDOUT:   %assoc1.02a: %ForwardDeclared.assoc_type = assoc_entity element1, @ForwardDeclared.%F.decl [concrete]
-// CHECK:STDOUT:   %struct_type.f.2f5: type = struct_type {.f: %ForwardDeclared.type} [concrete]
+// CHECK:STDOUT:   %struct_type.f: type = struct_type {.f: %ForwardDeclared.type} [concrete]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -81,15 +81,15 @@ var f: ForwardDeclared* = &f_ref.f;
 // CHECK:STDOUT:   %Basic.decl: type = interface_decl @Basic [concrete = constants.%Basic.type] {} {}
 // CHECK:STDOUT:   %ForwardDeclared.decl: type = interface_decl @ForwardDeclared [concrete = constants.%ForwardDeclared.type] {} {}
 // CHECK:STDOUT:   name_binding_decl {
-// CHECK:STDOUT:     %f_ref.patt: %struct_type.f.2f5 = binding_pattern f_ref
-// CHECK:STDOUT:     %.loc20_1: %struct_type.f.2f5 = var_pattern %f_ref.patt
+// CHECK:STDOUT:     %f_ref.patt: %struct_type.f = binding_pattern f_ref
+// CHECK:STDOUT:     %.loc20_1: %struct_type.f = var_pattern %f_ref.patt
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %f_ref.var: ref %struct_type.f.2f5 = var f_ref
-// CHECK:STDOUT:   %.loc20_32: type = splice_block %struct_type.f [concrete = constants.%struct_type.f.2f5] {
+// CHECK:STDOUT:   %f_ref.var: ref %struct_type.f = var f_ref
+// CHECK:STDOUT:   %.loc20_32: type = splice_block %struct_type.f [concrete = constants.%struct_type.f] {
 // CHECK:STDOUT:     %ForwardDeclared.ref: type = name_ref ForwardDeclared, %ForwardDeclared.decl [concrete = constants.%ForwardDeclared.type]
-// CHECK:STDOUT:     %struct_type.f: type = struct_type {.f: %ForwardDeclared.type} [concrete = constants.%struct_type.f.2f5]
+// CHECK:STDOUT:     %struct_type.f: type = struct_type {.f: %ForwardDeclared.type} [concrete = constants.%struct_type.f]
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %f_ref: ref %struct_type.f.2f5 = bind_name f_ref, %f_ref.var
+// CHECK:STDOUT:   %f_ref: ref %struct_type.f = bind_name f_ref, %f_ref.var
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Empty {
@@ -173,14 +173,14 @@ var f: ForwardDeclared* = &f_ref.f;
 // CHECK:STDOUT:   %assoc0.c94: %ForwardDeclared.assoc_type = assoc_entity element0, imports.%Main.import_ref.69a [concrete]
 // CHECK:STDOUT:   %assoc1.660: %ForwardDeclared.assoc_type = assoc_entity element1, imports.%Main.import_ref.1cc [concrete]
 // CHECK:STDOUT:   %ptr: type = ptr_type %ForwardDeclared.type [concrete]
-// CHECK:STDOUT:   %struct_type.f.2f5: type = struct_type {.f: %ForwardDeclared.type} [concrete]
+// CHECK:STDOUT:   %struct_type.f: type = struct_type {.f: %ForwardDeclared.type} [concrete]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.Empty: type = import_ref Main//a, Empty, loaded [concrete = constants.%Empty.type]
 // CHECK:STDOUT:   %Main.Basic: type = import_ref Main//a, Basic, loaded [concrete = constants.%Basic.type]
 // CHECK:STDOUT:   %Main.ForwardDeclared: type = import_ref Main//a, ForwardDeclared, loaded [concrete = constants.%ForwardDeclared.type]
-// CHECK:STDOUT:   %Main.f_ref: ref %struct_type.f.2f5 = import_ref Main//a, f_ref, loaded
+// CHECK:STDOUT:   %Main.f_ref: ref %struct_type.f = import_ref Main//a, f_ref, loaded
 // CHECK:STDOUT:   %Main.import_ref.cc0 = import_ref Main//a, inst16 [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.37f = import_ref Main//a, inst20 [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.152: %Basic.assoc_type = import_ref Main//a, loc8_8, loaded [concrete = constants.%assoc0.b26]
@@ -297,7 +297,7 @@ var f: ForwardDeclared* = &f_ref.f;
 // CHECK:STDOUT:
 // CHECK:STDOUT: fn @__global_init() {
 // CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   %f_ref.ref: ref %struct_type.f.2f5 = name_ref f_ref, imports.%Main.f_ref
+// CHECK:STDOUT:   %f_ref.ref: ref %struct_type.f = name_ref f_ref, imports.%Main.f_ref
 // CHECK:STDOUT:   %.loc16: ref %ForwardDeclared.type = struct_access %f_ref.ref, element0
 // CHECK:STDOUT:   %addr: %ptr = addr_of %.loc16
 // CHECK:STDOUT:   assign file.%f.var, %addr

toolchain/check/testdata/operators/overloaded/add.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Add.type: type = facet_type <@Add> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.545: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.796: <witness> = impl_witness (@impl.b32.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.7a3: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.c84: %Op.type.7a3 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/bit_and.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %BitAnd.type: type = facet_type <@BitAnd> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.27a: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.5af: <witness> = impl_witness (@impl.c1a.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.45e: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.c43: %Op.type.45e = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/bit_or.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %BitOr.type: type = facet_type <@BitOr> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.9bb: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.e68: <witness> = impl_witness (@impl.8f6.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.951: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.59a: %Op.type.951 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/bit_xor.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %BitXor.type: type = facet_type <@BitXor> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.e96: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.01d: <witness> = impl_witness (@impl.2e5.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.672: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.442: %Op.type.672 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/dec.carbon

@@ -30,8 +30,8 @@ fn TestOp() {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Dec.type: type = facet_type <@Dec> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.633: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.7f9.%Op.decl) [concrete]
 // CHECK:STDOUT:   %ptr.019: type = ptr_type %C [concrete]
 // CHECK:STDOUT:   %Op.type.9e0: type = fn_type @Op.2 [concrete]

toolchain/check/testdata/operators/overloaded/div.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Div.type: type = facet_type <@Div> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.784: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.745: <witness> = impl_witness (@impl.534.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.750: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.21e: %Op.type.750 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/fail_assign_non_ref.carbon

@@ -48,8 +48,8 @@ fn TestAddAssignNonRef(a: C, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Inc.type: type = facet_type <@Inc> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.e3a: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.ec3: <witness> = impl_witness (@impl.c51.%Op.decl) [concrete]
 // CHECK:STDOUT:   %ptr.019: type = ptr_type %C [concrete]
 // CHECK:STDOUT:   %Op.type.73a: type = fn_type @Op.2 [concrete]

toolchain/check/testdata/operators/overloaded/fail_no_impl_for_arg.carbon

@@ -57,8 +57,8 @@ fn TestAssign(b: D) {
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %D: type = class_type @D [concrete]
 // CHECK:STDOUT:   %Add.type: type = facet_type <@Add> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.545: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.796: <witness> = impl_witness (@impl.b32.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.7a3: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.c84: %Op.type.7a3 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/inc.carbon

@@ -30,8 +30,8 @@ fn TestOp() {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Inc.type: type = facet_type <@Inc> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.e3a: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.c51.%Op.decl) [concrete]
 // CHECK:STDOUT:   %ptr.019: type = ptr_type %C [concrete]
 // CHECK:STDOUT:   %Op.type.73a: type = fn_type @Op.2 [concrete]

toolchain/check/testdata/operators/overloaded/left_shift.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %LeftShift.type: type = facet_type <@LeftShift> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.789: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.df4: <witness> = impl_witness (@impl.c6e.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.de2: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.df9: %Op.type.de2 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/mod.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Mod.type: type = facet_type <@Mod> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.860: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.5d5: <witness> = impl_witness (@impl.f96.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.fd2: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.777: %Op.type.fd2 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/mul.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Mul.type: type = facet_type <@Mul> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.3ae: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.289: <witness> = impl_witness (@impl.4f2.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.fa5: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.550: %Op.type.fa5 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/right_shift.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %RightShift.type: type = facet_type <@RightShift> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.4f4: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.404: <witness> = impl_witness (@impl.3c1.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.092: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.79a: %Op.type.092 = struct_value () [concrete]

toolchain/check/testdata/operators/overloaded/sub.carbon

@@ -38,8 +38,8 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
 // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
 // CHECK:STDOUT:   %Sub.type: type = facet_type <@Sub> [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Op.type.111: type = fn_type @Op.1 [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl_witness.3b8: <witness> = impl_witness (@impl.3f9.%Op.decl) [concrete]
 // CHECK:STDOUT:   %Op.type.c74: type = fn_type @Op.2 [concrete]
 // CHECK:STDOUT:   %Op.151: %Op.type.c74 = struct_value () [concrete]

toolchain/check/testdata/where_expr/constraints.carbon

@@ -120,9 +120,9 @@ fn NotEmptyStruct() {
 // CHECK:STDOUT:   %Self.826: %I.type = bind_symbolic_name Self, 0 [symbolic]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [concrete]
 // CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, @I.%Member [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %assoc1: %I.assoc_type = assoc_entity element1, @I.%Second [concrete]
 // CHECK:STDOUT:   %.Self.258: %I.type = bind_symbolic_name .Self [symbolic_self]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %I_where.type: type = facet_type <@I where TODO> [concrete]
 // CHECK:STDOUT:   %U: %I_where.type = bind_symbolic_name U, 0 [symbolic]
 // CHECK:STDOUT:   %U.patt: %I_where.type = symbolic_binding_pattern U, 0 [symbolic]

toolchain/check/testdata/where_expr/equal_rewrite.carbon

@@ -281,12 +281,12 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %assoc0: %A.assoc_type = assoc_entity element0, @A.%B [concrete]
 // CHECK:STDOUT:   %assoc1: %A.assoc_type = assoc_entity element1, @A.%C [concrete]
 // CHECK:STDOUT:   %.Self.3ca: %A.type = bind_symbolic_name .Self [symbolic_self]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %.Self.as_type.adb: type = facet_access_type %.Self.3ca [symbolic_self]
 // CHECK:STDOUT:   %.Self.as_wit.iface0.844: <witness> = facet_access_witness %.Self.3ca, element0 [symbolic_self]
 // CHECK:STDOUT:   %A.facet.aea: %A.type = facet_value %.Self.as_type.adb, (%.Self.as_wit.iface0.844) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0.844, element0 [symbolic_self]
 // CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
 // CHECK:STDOUT:   %A_where.type.bcb: type = facet_type <@A where %impl.elem0 = bool> [concrete]
 // CHECK:STDOUT:   %.Self.80b: %A_where.type.bcb = bind_symbolic_name .Self [symbolic_self]
@@ -404,12 +404,12 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %E.assoc_type: type = assoc_entity_type %E.type [concrete]
 // CHECK:STDOUT:   %assoc0: %E.assoc_type = assoc_entity element0, @E.%F [concrete]
 // CHECK:STDOUT:   %.Self: %E.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:   %E.facet: %E.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
 // CHECK:STDOUT:   %E_where.type: type = facet_type <@E where %impl.elem0 = %i32> [concrete]
 // CHECK:STDOUT:   %G: %E_where.type = bind_symbolic_name G, 0 [symbolic]
@@ -634,11 +634,11 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %assoc0: %J.assoc_type = assoc_entity element0, @J.%K [concrete]
 // CHECK:STDOUT:   %assoc1: %J.assoc_type = assoc_entity element1, @J.%L [concrete]
 // CHECK:STDOUT:   %.Self: %J.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:   %J.facet: %J.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %impl.elem1: type = impl_witness_access %.Self.as_wit.iface0, element1 [symbolic_self]
 // CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
 // CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
@@ -821,12 +821,12 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %O.assoc_type: type = assoc_entity_type %O.type [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.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
 // CHECK:STDOUT:   %O_where.type.fe1: type = facet_type <@O where %impl.elem0 = %i32> [concrete]
 // CHECK:STDOUT:   %Q: %O_where.type.fe1 = bind_symbolic_name Q, 0 [symbolic]
@@ -991,11 +991,11 @@ let K: (E where .F = .Self.G) = bool;
 // 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.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:   %empty_tuple.type: type = tuple_type () [concrete]
 // 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]
 // CHECK:STDOUT:   %V.patt: %S_where.type.15b = symbolic_binding_pattern V, 0 [symbolic]
@@ -1445,12 +1445,12 @@ let K: (E where .F = .Self.G) = bool;
 // CHECK:STDOUT:   %assoc0: %E.assoc_type = assoc_entity element0, @E.%F [concrete]
 // CHECK:STDOUT:   %assoc1: %E.assoc_type = assoc_entity element1, @E.%G [concrete]
 // CHECK:STDOUT:   %.Self.da5: %E.type = bind_symbolic_name .Self [symbolic_self]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %.Self.as_type.34e: type = facet_access_type %.Self.da5 [symbolic_self]
 // CHECK:STDOUT:   %.Self.as_wit.iface0.7f0: <witness> = facet_access_witness %.Self.da5, element0 [symbolic_self]
 // CHECK:STDOUT:   %E.facet.99c: %E.type = facet_value %.Self.as_type.34e, (%.Self.as_wit.iface0.7f0) [symbolic_self]
 // CHECK:STDOUT:   %impl.elem0: type = impl_witness_access %.Self.as_wit.iface0.7f0, element0 [symbolic_self]
 // CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
 // CHECK:STDOUT:   %impl.elem1.7a9: type = impl_witness_access %.Self.as_wit.iface0.7f0, element1 [symbolic_self]
 // CHECK:STDOUT:   %E_where.type.281: type = facet_type <@E where %impl.elem1.7a9 = %empty_tuple.type and %impl.elem0 = bool> [concrete]

toolchain/check/type_completion.cpp

@@ -85,13 +85,13 @@ class TypeCompleter {
       -> SemIR::CompleteTypeInfo;
 
   template <typename InstT>
-    requires(
-        InstT::Kind.template IsAnyOf<
-            SemIR::AutoType, SemIR::BoolType, SemIR::BoundMethodType,
-            SemIR::ErrorInst, SemIR::FloatType, SemIR::IntType,
-            SemIR::IntLiteralType, SemIR::LegacyFloatType, SemIR::NamespaceType,
-            SemIR::PointerType, SemIR::SpecificFunctionType, SemIR::TypeType,
-            SemIR::VtableType, SemIR::WitnessType>())
+    requires(InstT::Kind.template IsAnyOf<
+             SemIR::AutoType, SemIR::BoolType, SemIR::BoundMethodType,
+             SemIR::ErrorInst, SemIR::FacetType, SemIR::FloatType,
+             SemIR::IntType, SemIR::IntLiteralType, SemIR::LegacyFloatType,
+             SemIR::NamespaceType, SemIR::PointerType,
+             SemIR::SpecificFunctionType, SemIR::TypeType, SemIR::VtableType,
+             SemIR::WitnessType>())
   auto BuildInfoForInst(SemIR::TypeId type_id, InstT /*inst*/) const
       -> SemIR::CompleteTypeInfo {
     return {.value_repr = MakeCopyValueRepr(type_id)};
@@ -121,7 +121,7 @@ class TypeCompleter {
 
   template <typename InstT>
     requires(InstT::Kind.template IsAnyOf<
-             SemIR::AssociatedEntityType, SemIR::FacetType, SemIR::FunctionType,
+             SemIR::AssociatedEntityType, SemIR::FunctionType,
              SemIR::FunctionTypeWithSelfType, SemIR::GenericClassType,
              SemIR::GenericInterfaceType, SemIR::InstType,
              SemIR::UnboundElementType, SemIR::WhereExpr>())

toolchain/lower/testdata/interface/basic.carbon

@@ -19,9 +19,9 @@ fn F(T: I) -> I { return T; }
 // CHECK:STDOUT: ; ModuleID = 'basic.carbon'
 // CHECK:STDOUT: source_filename = "basic.carbon"
 // CHECK:STDOUT:
-// CHECK:STDOUT: define void @_CF.Main() !dbg !4 {
+// CHECK:STDOUT: define {} @_CF.Main({} %T) !dbg !4 {
 // CHECK:STDOUT: entry:
-// CHECK:STDOUT:   ret void, !dbg !7
+// CHECK:STDOUT:   ret {} %T, !dbg !7
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: !llvm.module.flags = !{!0, !1}