Don't elide Self when dumping the interface/constraint (#6297)

We give `Self` in an interface/constraint a location so it's not elided
when trying to dump the interface/constraint. We use the location of the
start of the definition, which is the scope for which the `Self` is
constructed and is available in.

toolchain/check/handle_interface.cpp

@@ -138,8 +138,9 @@ auto HandleParseNode(Context& context,
   // `require` declarations.
   SemIR::TypeId self_type_id =
       GetInterfaceType(context, interface_id, self_specific_id);
-  interface_info.self_param_id = AddSelfGenericParameter(
-      context, self_type_id, interface_info.scope_id, /*is_template=*/false);
+  interface_info.self_param_id =
+      AddSelfGenericParameter(context, node_id, self_type_id,
+                              interface_info.scope_id, /*is_template=*/false);
 
   // Enter the interface scope.
   context.scope_stack().PushForEntity(decl_inst_id, interface_info.scope_id,

toolchain/check/handle_named_constraint.cpp

@@ -137,7 +137,7 @@ auto HandleParseNode(Context& context,
   SemIR::TypeId self_type_id =
       GetNamedConstraintType(context, named_constraint_id, self_specific_id);
   constraint_info.self_param_id = AddSelfGenericParameter(
-      context, self_type_id, constraint_info.scope_id, is_template);
+      context, node_id, self_type_id, constraint_info.scope_id, is_template);
 
   // Enter the constraint scope.
   context.scope_stack().PushForEntity(decl_inst_id, constraint_info.scope_id,

toolchain/check/interface.cpp

@@ -223,19 +223,19 @@ auto GetTypeForSpecificAssociatedEntity(Context& context, SemIR::LocId loc_id,
   CARBON_FATAL("Unexpected kind for associated constant {0}", decl);
 }
 
-auto AddSelfGenericParameter(Context& context, SemIR::TypeId type_id,
-                             SemIR::NameScopeId scope_id, bool is_template)
-    -> SemIR::InstId {
+auto AddSelfGenericParameter(Context& context, SemIR::LocId definition_loc_id,
+                             SemIR::TypeId type_id, SemIR::NameScopeId scope_id,
+                             bool is_template) -> SemIR::InstId {
   auto entity_name_id = context.entity_names().AddSymbolicBindingName(
       SemIR::NameId::SelfType, scope_id,
       context.scope_stack().AddCompileTimeBinding(), is_template);
   // Because there is no equivalent non-symbolic value, we use `None` as
   // the `value_id` on the `SymbolicBinding`.
   auto self_param_inst_id =
-      AddInst(context, SemIR::LocIdAndInst::NoLoc<SemIR::SymbolicBinding>(
-                           {.type_id = type_id,
-                            .entity_name_id = entity_name_id,
-                            .value_id = SemIR::InstId::None}));
+      AddInst<SemIR::SymbolicBinding>(context, definition_loc_id,
+                                      {.type_id = type_id,
+                                       .entity_name_id = entity_name_id,
+                                       .value_id = SemIR::InstId::None});
   context.scope_stack().PushCompileTimeBinding(self_param_inst_id);
   context.name_scopes().AddRequiredName(scope_id, SemIR::NameId::SelfType,
                                         self_param_inst_id);

toolchain/check/interface.h

@@ -46,9 +46,9 @@ auto GetTypeForSpecificAssociatedEntity(Context& context, SemIR::LocId loc_id,
 // `scope_id`, and add the name `Self` for the compile time binding.
 //
 // Returns the symbolic binding instruction.
-auto AddSelfGenericParameter(Context& context, SemIR::TypeId type_id,
-                             SemIR::NameScopeId scope_id, bool is_template)
-    -> SemIR::InstId;
+auto AddSelfGenericParameter(Context& context, SemIR::LocId definition_loc_id,
+                             SemIR::TypeId type_id, SemIR::NameScopeId scope_id,
+                             bool is_template) -> SemIR::InstId;
 
 // Given a search result `lookup_result` for `name`, returns the previous valid
 // declaration of `name` if there is one. The `entity` is a new decl of the same

toolchain/check/testdata/basics/include_in_dumps.carbon

@@ -135,7 +135,7 @@ fn F(c: C) { c.(I.Op)(); }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @I {
-// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
 // CHECK:STDOUT:   %I.Op.decl: %I.Op.type = fn_decl @I.Op [concrete = constants.%I.Op] {
 // CHECK:STDOUT:     %self.patt: @I.Op.%pattern_type (%pattern_type.89c) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:     %self.param_patt: @I.Op.%pattern_type (%pattern_type.89c) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -210,11 +210,11 @@ fn F(c: C) { c.(I.Op)(); }
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//included_with_range, loc16_1, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.2c4 = import_ref Main//included_with_range, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//included_with_range, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//included_with_range, loc7_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.9cd: %I.assoc_type = import_ref Main//included_with_range, loc8_22, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.Op = import_ref Main//included_with_range, Op, unloaded
 // CHECK:STDOUT:   %Main.import_ref.7d9: %I.Op.type = import_ref Main//included_with_range, loc8_22, loaded [concrete = constants.%I.Op]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//included_with_range, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//included_with_range, loc7_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.3a9: <witness> = import_ref Main//included_with_range, loc13_15, loaded [concrete = constants.%I.impl_witness]
 // CHECK:STDOUT:   %Main.import_ref.29a: type = import_ref Main//included_with_range, loc13_8, loaded [concrete = constants.%C]
 // CHECK:STDOUT:   %Main.import_ref.301: type = import_ref Main//included_with_range, loc13_13, loaded [concrete = constants.%I.type]

toolchain/check/testdata/class/generic/member_type.carbon

@@ -529,14 +529,14 @@ fn Test() -> i32 {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %Inner.type: type = facet_type <@Inner, @Inner(%T)> [symbolic = %Inner.type (constants.%Inner.type.5f4)]
-// CHECK:STDOUT:   %Self.2: @Inner.%Inner.type (%Inner.type.5f4) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1ac)]
+// CHECK:STDOUT:   %Self.loc5_19.2: @Inner.%Inner.type (%Inner.type.5f4) = symbolic_binding Self, 1 [symbolic = %Self.loc5_19.2 (constants.%Self.1ac)]
 // CHECK:STDOUT:   %Inner.F.type: type = fn_type @Inner.F, @Inner(%T) [symbolic = %Inner.F.type (constants.%Inner.F.type.b25)]
 // CHECK:STDOUT:   %Inner.F: @Inner.%Inner.F.type (%Inner.F.type.b25) = struct_value () [symbolic = %Inner.F (constants.%Inner.F.88e)]
 // CHECK:STDOUT:   %Inner.assoc_type: type = assoc_entity_type @Inner, @Inner(%T) [symbolic = %Inner.assoc_type (constants.%Inner.assoc_type.b54)]
 // CHECK:STDOUT:   %assoc0.loc6_28.2: @Inner.%Inner.assoc_type (%Inner.assoc_type.b54) = assoc_entity element0, %Inner.F.decl [symbolic = %assoc0.loc6_28.2 (constants.%assoc0.dc7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Inner.%Inner.type (%Inner.type.5f4) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1ac)]
+// CHECK:STDOUT:     %Self.loc5_19.1: @Inner.%Inner.type (%Inner.type.5f4) = symbolic_binding Self, 1 [symbolic = %Self.loc5_19.2 (constants.%Self.1ac)]
 // CHECK:STDOUT:     %Inner.F.decl: @Inner.%Inner.F.type (%Inner.F.type.b25) = fn_decl @Inner.F [symbolic = @Inner.%Inner.F (constants.%Inner.F.88e)] {
 // CHECK:STDOUT:       %self.patt: @Inner.F.%pattern_type.loc6_10 (%pattern_type.0d2) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @Inner.F.%pattern_type.loc6_10 (%pattern_type.0d2) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -546,7 +546,7 @@ fn Test() -> i32 {
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @Outer.%T.loc4_13.2 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:       %self.param: @Inner.F.%Self.binding.as_type (%Self.binding.as_type.bfd) = value_param call_param0
 // CHECK:STDOUT:       %.loc6_16.1: type = splice_block %.loc6_16.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.bfd)] {
-// CHECK:STDOUT:         %.loc6_16.2: @Inner.F.%Inner.type (%Inner.type.5f4) = specific_constant @Inner.%Self.1, @Inner(constants.%T) [symbolic = %Self (constants.%Self.1ac)]
+// CHECK:STDOUT:         %.loc6_16.2: @Inner.F.%Inner.type (%Inner.type.5f4) = specific_constant @Inner.%Self.loc5_19.1, @Inner(constants.%T) [symbolic = %Self (constants.%Self.1ac)]
 // CHECK:STDOUT:         %Self.ref: @Inner.F.%Inner.type (%Inner.type.5f4) = name_ref Self, %.loc6_16.2 [symbolic = %Self (constants.%Self.1ac)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.bfd)]
 // CHECK:STDOUT:         %.loc6_16.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.bfd)]
@@ -558,7 +558,7 @@ fn Test() -> i32 {
 // CHECK:STDOUT:     %assoc0.loc6_28.1: @Inner.%Inner.assoc_type (%Inner.assoc_type.b54) = assoc_entity element0, %Inner.F.decl [symbolic = %assoc0.loc6_28.2 (constants.%assoc0.dc7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc5_19.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc6_28.1
 // CHECK:STDOUT:     witness = (%Inner.F.decl)
@@ -689,7 +689,7 @@ fn Test() -> i32 {
 // CHECK:STDOUT:   .D = <poisoned>
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Inner.F(@Outer.%T.loc4_13.2: type, @Inner.%Self.1: @Inner.%Inner.type (%Inner.type.5f4)) {
+// CHECK:STDOUT: generic fn @Inner.F(@Outer.%T.loc4_13.2: type, @Inner.%Self.loc5_19.1: @Inner.%Inner.type (%Inner.type.5f4)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %Inner.type: type = facet_type <@Inner, @Inner(%T)> [symbolic = %Inner.type (constants.%Inner.type.5f4)]
 // CHECK:STDOUT:   %Self: @Inner.F.%Inner.type (%Inner.type.5f4) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.1ac)]
@@ -794,7 +794,7 @@ fn Test() -> i32 {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T => constants.%T
 // CHECK:STDOUT:   %Inner.type => constants.%Inner.type.5f4
-// CHECK:STDOUT:   %Self.2 => constants.%Self.1ac
+// CHECK:STDOUT:   %Self.loc5_19.2 => constants.%Self.1ac
 // CHECK:STDOUT:   %Inner.F.type => constants.%Inner.F.type.b25
 // CHECK:STDOUT:   %Inner.F => constants.%Inner.F.88e
 // CHECK:STDOUT:   %Inner.assoc_type => constants.%Inner.assoc_type.b54
@@ -863,7 +863,7 @@ fn Test() -> i32 {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T => constants.%i32
 // CHECK:STDOUT:   %Inner.type => constants.%Inner.type.56c
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d26
+// CHECK:STDOUT:   %Self.loc5_19.2 => constants.%Self.d26
 // CHECK:STDOUT:   %Inner.F.type => constants.%Inner.F.type.86e
 // CHECK:STDOUT:   %Inner.F => constants.%Inner.F.11d
 // CHECK:STDOUT:   %Inner.assoc_type => constants.%Inner.assoc_type.215

toolchain/check/testdata/facet/convert_class_type_to_generic_facet_value.carbon

@@ -187,19 +187,19 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%Scalar.loc4_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68bb8d.1)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:   %Self.loc4_34.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:   %Generic.F.type: type = fn_type @Generic.F, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.F.type (constants.%Generic.F.type.fc1c8a.1)]
 // CHECK:STDOUT:   %Generic.F: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = struct_value () [symbolic = %Generic.F (constants.%Generic.F.d952d5.1)]
 // CHECK:STDOUT:   %Generic.assoc_type: type = assoc_entity_type @Generic, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.assoc_type (constants.%Generic.assoc_type.414a90.1)]
 // CHECK:STDOUT:   %assoc0.loc5_9.2: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:     %Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:     %Generic.F.decl: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = fn_decl @Generic.F [symbolic = @Generic.%Generic.F (constants.%Generic.F.d952d5.1)] {} {}
 // CHECK:STDOUT:     %assoc0.loc5_9.1: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_34.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_9.1
 // CHECK:STDOUT:     witness = (%Generic.F.decl)
 // CHECK:STDOUT:   }
@@ -229,7 +229,7 @@ fn G() {
 // CHECK:STDOUT:   .Self = constants.%ImplsGeneric
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
+// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -307,7 +307,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.621
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ae2
+// CHECK:STDOUT:   %Self.loc4_34.2 => constants.%Self.ae2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.4cf
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.118
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.713
@@ -321,7 +321,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.68bb8d.2
-// CHECK:STDOUT:   %Self.2 => constants.%Self.fc1c73.2
+// CHECK:STDOUT:   %Self.loc4_34.2 => constants.%Self.fc1c73.2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.fc1c8a.2
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.d952d5.2
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.414a90.2
@@ -478,19 +478,19 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%Scalar.loc4_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68bb8d.1)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:   %Self.loc4_34.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:   %Generic.F.type: type = fn_type @Generic.F, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.F.type (constants.%Generic.F.type.fc1)]
 // CHECK:STDOUT:   %Generic.F: @Generic.%Generic.F.type (%Generic.F.type.fc1) = struct_value () [symbolic = %Generic.F (constants.%Generic.F.d95)]
 // CHECK:STDOUT:   %Generic.assoc_type: type = assoc_entity_type @Generic, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.assoc_type (constants.%Generic.assoc_type.414)]
 // CHECK:STDOUT:   %assoc0.loc5_9.2: @Generic.%Generic.assoc_type (%Generic.assoc_type.414) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.312)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:     %Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:     %Generic.F.decl: @Generic.%Generic.F.type (%Generic.F.type.fc1) = fn_decl @Generic.F [symbolic = @Generic.%Generic.F (constants.%Generic.F.d95)] {} {}
 // CHECK:STDOUT:     %assoc0.loc5_9.1: @Generic.%Generic.assoc_type (%Generic.assoc_type.414) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.312)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_34.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_9.1
 // CHECK:STDOUT:     witness = (%Generic.F.decl)
 // CHECK:STDOUT:   }
@@ -520,7 +520,7 @@ fn G() {
 // CHECK:STDOUT:   .Self = constants.%ImplsGeneric
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
+// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -579,7 +579,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.621
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ae2
+// CHECK:STDOUT:   %Self.loc4_34.2 => constants.%Self.ae2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.4cf
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.118
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.713

toolchain/check/testdata/facet/convert_class_value_to_generic_facet_value_value.carbon

@@ -240,19 +240,19 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%Scalar.loc4_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68bb8d.1)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:   %Self.loc4_34.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:   %Generic.F.type: type = fn_type @Generic.F, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.F.type (constants.%Generic.F.type.fc1c8a.1)]
 // CHECK:STDOUT:   %Generic.F: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = struct_value () [symbolic = %Generic.F (constants.%Generic.F.d952d5.1)]
 // CHECK:STDOUT:   %Generic.assoc_type: type = assoc_entity_type @Generic, @Generic(%Scalar.loc4_19.1) [symbolic = %Generic.assoc_type (constants.%Generic.assoc_type.414a90.1)]
 // CHECK:STDOUT:   %assoc0.loc5_9.2: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:     %Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:     %Generic.F.decl: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = fn_decl @Generic.F [symbolic = @Generic.%Generic.F (constants.%Generic.F.d952d5.1)] {} {}
 // CHECK:STDOUT:     %assoc0.loc5_9.1: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_34.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_9.1
 // CHECK:STDOUT:     witness = (%Generic.F.decl)
 // CHECK:STDOUT:   }
@@ -282,7 +282,7 @@ fn B() {
 // CHECK:STDOUT:   .Self = constants.%ImplsGeneric
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
+// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc4_19.2: type, @Generic.%Self.loc4_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -371,7 +371,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.621
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ae2
+// CHECK:STDOUT:   %Self.loc4_34.2 => constants.%Self.ae2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.4cf
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.118
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.713
@@ -385,7 +385,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.68bb8d.2
-// CHECK:STDOUT:   %Self.2 => constants.%Self.fc1c73.2
+// CHECK:STDOUT:   %Self.loc4_34.2 => constants.%Self.fc1c73.2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.fc1c8a.2
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.d952d5.2
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.414a90.2
@@ -547,13 +547,13 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%V.loc3_13.1, %W.loc3_23.1)> [symbolic = %I.type (constants.%I.type.912)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.5e4)]
+// CHECK:STDOUT:   %Self.loc3_33.2: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.loc3_33.2 (constants.%Self.5e4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.5e4)]
+// CHECK:STDOUT:     %Self.loc3_33.1: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.loc3_33.2 (constants.%Self.5e4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_33.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -629,7 +629,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.b47
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d52
+// CHECK:STDOUT:   %Self.loc3_33.2 => constants.%Self.d52
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @C.as.I.impl(constants.%T.d9f) {
@@ -645,7 +645,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.302
-// CHECK:STDOUT:   %Self.2 => constants.%Self.eec
+// CHECK:STDOUT:   %Self.loc3_33.2 => constants.%Self.eec
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @A(constants.%T.b27) {
@@ -788,13 +788,13 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%V.loc3_13.1, %W.loc3_23.1)> [symbolic = %I.type (constants.%I.type.912)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.5e4)]
+// CHECK:STDOUT:   %Self.loc3_33.2: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.loc3_33.2 (constants.%Self.5e4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.5e4)]
+// CHECK:STDOUT:     %Self.loc3_33.1: @I.%I.type (%I.type.912) = symbolic_binding Self, 2 [symbolic = %Self.loc3_33.2 (constants.%Self.5e4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_33.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -863,7 +863,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.b47
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d52
+// CHECK:STDOUT:   %Self.loc3_33.2 => constants.%Self.d52
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @C.as.I.impl(constants.%T.d9f) {
@@ -879,7 +879,7 @@ fn B() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.1c6
-// CHECK:STDOUT:   %Self.2 => constants.%Self.e4e
+// CHECK:STDOUT:   %Self.loc3_33.2 => constants.%Self.e4e
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @A(constants.%T.9c9) {

toolchain/check/testdata/facet/convert_facet_value_value_to_generic_facet_value_value.carbon

@@ -290,13 +290,13 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Eats.type: type = facet_type <@Eats, @Eats(%Food.loc21_16.1)> [symbolic = %Eats.type (constants.%Eats.type.c18)]
-// CHECK:STDOUT:   %Self.2: @Eats.%Eats.type (%Eats.type.c18) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.4e3)]
+// CHECK:STDOUT:   %Self.loc21_29.2: @Eats.%Eats.type (%Eats.type.c18) = symbolic_binding Self, 1 [symbolic = %Self.loc21_29.2 (constants.%Self.4e3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Eats.%Eats.type (%Eats.type.c18) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.4e3)]
+// CHECK:STDOUT:     %Self.loc21_29.1: @Eats.%Eats.type (%Eats.type.c18) = symbolic_binding Self, 1 [symbolic = %Self.loc21_29.2 (constants.%Self.4e3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc21_29.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -444,7 +444,7 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Eats.type => constants.%Eats.type.98f93b.1
-// CHECK:STDOUT:   %Self.2 => constants.%Self.9eb
+// CHECK:STDOUT:   %Self.loc21_29.2 => constants.%Self.9eb
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @T.binding.as_type.as.Eats.impl(constants.%T.84c, constants.%U) {
@@ -462,7 +462,7 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Eats.type => constants.%Eats.type.3cc
-// CHECK:STDOUT:   %Self.2 => constants.%Self.7e0
+// CHECK:STDOUT:   %Self.loc21_29.2 => constants.%Self.7e0
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @Feed(constants.%Food.17b, constants.%T.7e0) {
@@ -538,7 +538,7 @@ fn F() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Eats.type => constants.%Eats.type.cee
-// CHECK:STDOUT:   %Self.2 => constants.%Self.026
+// CHECK:STDOUT:   %Self.loc21_29.2 => constants.%Self.026
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @T.binding.as_type.as.Eats.impl(constants.%Animal.facet, constants.%Edible.facet) {

toolchain/check/testdata/facet/fail_convert_class_type_to_generic_facet_value.carbon

@@ -134,19 +134,19 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%Scalar.loc15_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68bb8d.1)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:   %Self.loc15_34.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc15_34.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:   %Generic.F.type: type = fn_type @Generic.F, @Generic(%Scalar.loc15_19.1) [symbolic = %Generic.F.type (constants.%Generic.F.type.fc1)]
 // CHECK:STDOUT:   %Generic.F: @Generic.%Generic.F.type (%Generic.F.type.fc1) = struct_value () [symbolic = %Generic.F (constants.%Generic.F.d95)]
 // CHECK:STDOUT:   %Generic.assoc_type: type = assoc_entity_type @Generic, @Generic(%Scalar.loc15_19.1) [symbolic = %Generic.assoc_type (constants.%Generic.assoc_type.414)]
 // CHECK:STDOUT:   %assoc0.loc16_9.2: @Generic.%Generic.assoc_type (%Generic.assoc_type.414) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc16_9.2 (constants.%assoc0.312)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:     %Self.loc15_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc15_34.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:     %Generic.F.decl: @Generic.%Generic.F.type (%Generic.F.type.fc1) = fn_decl @Generic.F [symbolic = @Generic.%Generic.F (constants.%Generic.F.d95)] {} {}
 // CHECK:STDOUT:     %assoc0.loc16_9.1: @Generic.%Generic.assoc_type (%Generic.assoc_type.414) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc16_9.2 (constants.%assoc0.312)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_34.1
 // CHECK:STDOUT:     .F = %assoc0.loc16_9.1
 // CHECK:STDOUT:     witness = (%Generic.F.decl)
 // CHECK:STDOUT:   }
@@ -184,7 +184,7 @@ fn G() {
 // CHECK:STDOUT:   .Self = constants.%ImplsGeneric
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc15_19.2: type, @Generic.%Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
+// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc15_19.2: type, @Generic.%Self.loc15_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -226,7 +226,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.621
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ae2
+// CHECK:STDOUT:   %Self.loc15_34.2 => constants.%Self.ae2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.4cf
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.118
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.713

toolchain/check/testdata/facet/period_self.carbon

@@ -474,24 +474,25 @@ fn F[U:! Core.Destroy where .Self impls I(.Self)](u: U) {
 // CHECK:STDOUT:   %T.loc4_13.1: type = symbolic_binding T, 0 [symbolic = %T.loc4_13.1 (constants.%T.d9f)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T.loc4_13.1)> [symbolic = %I.type (constants.%I.type.070)]
+// CHECK:STDOUT:   %Self.loc4_23.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%T.loc4_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type.b65)]
 // CHECK:STDOUT:   %assoc0: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, %I1 [symbolic = %assoc0 (constants.%assoc0.594)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %Self.loc4_23.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:     %I1: type = assoc_const_decl @I1 [concrete] {
 // CHECK:STDOUT:       %assoc0: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, @I.%I1 [symbolic = @I.%assoc0 (constants.%assoc0.594)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_23.1
 // CHECK:STDOUT:     .I1 = @I1.%assoc0
 // CHECK:STDOUT:     witness = (%I1)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @I1(@I.%T.loc4_13.2: type, @I.%Self.1: @I.%I.type (%I.type.070)) {
+// CHECK:STDOUT: generic assoc_const @I1(@I.%T.loc4_13.2: type, @I.%Self.loc4_23.1: @I.%I.type (%I.type.070)) {
 // CHECK:STDOUT:   assoc_const I1:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -538,7 +539,7 @@ fn F[U:! Core.Destroy where .Self impls I(.Self)](u: U) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.cd0
-// CHECK:STDOUT:   %Self.2 => constants.%Self.a38
+// CHECK:STDOUT:   %Self.loc4_23.2 => constants.%Self.a38
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.22b
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.b98
 // CHECK:STDOUT: }

toolchain/check/testdata/function/builtin/call_from_operator.carbon

@@ -254,14 +254,14 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %AddWith.type: type = facet_type <@AddWith, @AddWith(%T.loc7_19.1)> [symbolic = %AddWith.type (constants.%AddWith.type.302)]
-// CHECK:STDOUT:   %Self.2: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.236)]
+// CHECK:STDOUT:   %Self.loc7_29.2: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.loc7_29.2 (constants.%Self.236)]
 // CHECK:STDOUT:   %AddWith.Op.type: type = fn_type @AddWith.Op, @AddWith(%T.loc7_19.1) [symbolic = %AddWith.Op.type (constants.%AddWith.Op.type.8bf)]
 // CHECK:STDOUT:   %AddWith.Op: @AddWith.%AddWith.Op.type (%AddWith.Op.type.8bf) = struct_value () [symbolic = %AddWith.Op (constants.%AddWith.Op.349)]
 // CHECK:STDOUT:   %AddWith.assoc_type: type = assoc_entity_type @AddWith, @AddWith(%T.loc7_19.1) [symbolic = %AddWith.assoc_type (constants.%AddWith.assoc_type.fb4)]
 // CHECK:STDOUT:   %assoc0.loc8_41.2: @AddWith.%AddWith.assoc_type (%AddWith.assoc_type.fb4) = assoc_entity element0, %AddWith.Op.decl [symbolic = %assoc0.loc8_41.2 (constants.%assoc0.c22)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.236)]
+// CHECK:STDOUT:     %Self.loc7_29.1: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.loc7_29.2 (constants.%Self.236)]
 // CHECK:STDOUT:     %AddWith.Op.decl: @AddWith.%AddWith.Op.type (%AddWith.Op.type.8bf) = fn_decl @AddWith.Op [symbolic = @AddWith.%AddWith.Op (constants.%AddWith.Op.349)] {
 // CHECK:STDOUT:       %self.patt: @AddWith.Op.%pattern_type (%pattern_type.7a8) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @AddWith.Op.%pattern_type (%pattern_type.7a8) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -270,13 +270,13 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:       %return.patt: @AddWith.Op.%pattern_type (%pattern_type.7a8) = return_slot_pattern [concrete]
 // CHECK:STDOUT:       %return.param_patt: @AddWith.Op.%pattern_type (%pattern_type.7a8) = out_param_pattern %return.patt, call_param2 [concrete]
 // CHECK:STDOUT:     } {
-// CHECK:STDOUT:       %.loc8_37.1: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
+// CHECK:STDOUT:       %.loc8_37.1: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.loc7_29.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:       %Self.ref.loc8_37: @AddWith.Op.%AddWith.type (%AddWith.type.302) = name_ref Self, %.loc8_37.1 [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:       %Self.as_type.loc8_37: type = facet_access_type %Self.ref.loc8_37 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
 // CHECK:STDOUT:       %.loc8_37.2: type = converted %Self.ref.loc8_37, %Self.as_type.loc8_37 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
 // CHECK:STDOUT:       %self.param: @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054) = value_param call_param0
 // CHECK:STDOUT:       %.loc8_15.1: type = splice_block %.loc8_15.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)] {
-// CHECK:STDOUT:         %.loc8_15.2: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
+// CHECK:STDOUT:         %.loc8_15.2: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.loc7_29.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:         %Self.ref.loc8_15: @AddWith.Op.%AddWith.type (%AddWith.type.302) = name_ref Self, %.loc8_15.2 [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:         %Self.as_type.loc8_15: type = facet_access_type %Self.ref.loc8_15 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
 // CHECK:STDOUT:         %.loc8_15.3: type = converted %Self.ref.loc8_15, %Self.as_type.loc8_15 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
@@ -284,7 +284,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:       %self: @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054) = value_binding self, %self.param
 // CHECK:STDOUT:       %other.param: @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054) = value_param call_param1
 // CHECK:STDOUT:       %.loc8_28.1: type = splice_block %.loc8_28.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)] {
-// CHECK:STDOUT:         %.loc8_28.2: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
+// CHECK:STDOUT:         %.loc8_28.2: @AddWith.Op.%AddWith.type (%AddWith.type.302) = specific_constant @AddWith.%Self.loc7_29.1, @AddWith(constants.%T) [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:         %Self.ref.loc8_28: @AddWith.Op.%AddWith.type (%AddWith.type.302) = name_ref Self, %.loc8_28.2 [symbolic = %Self (constants.%Self.236)]
 // CHECK:STDOUT:         %Self.as_type.loc8_28: type = facet_access_type %Self.ref.loc8_28 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
 // CHECK:STDOUT:         %.loc8_28.3: type = converted %Self.ref.loc8_28, %Self.as_type.loc8_28 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.054)]
@@ -296,7 +296,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:     %assoc0.loc8_41.1: @AddWith.%AddWith.assoc_type (%AddWith.assoc_type.fb4) = assoc_entity element0, %AddWith.Op.decl [symbolic = %assoc0.loc8_41.2 (constants.%assoc0.c22)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc7_29.1
 // CHECK:STDOUT:     .Op = %assoc0.loc8_41.1
 // CHECK:STDOUT:     witness = (%AddWith.Op.decl)
 // CHECK:STDOUT:   }
@@ -307,14 +307,14 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %As.type: type = facet_type <@As, @As(%T.loc11_14.1)> [symbolic = %As.type (constants.%As.type.596)]
-// CHECK:STDOUT:   %Self.2: @As.%As.type (%As.type.596) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.654)]
+// CHECK:STDOUT:   %Self.loc11_24.2: @As.%As.type (%As.type.596) = symbolic_binding Self, 1 [symbolic = %Self.loc11_24.2 (constants.%Self.654)]
 // CHECK:STDOUT:   %As.Convert.type: type = fn_type @As.Convert, @As(%T.loc11_14.1) [symbolic = %As.Convert.type (constants.%As.Convert.type.7fa)]
 // CHECK:STDOUT:   %As.Convert: @As.%As.Convert.type (%As.Convert.type.7fa) = struct_value () [symbolic = %As.Convert (constants.%As.Convert.1e3)]
 // CHECK:STDOUT:   %As.assoc_type: type = assoc_entity_type @As, @As(%T.loc11_14.1) [symbolic = %As.assoc_type (constants.%As.assoc_type.335)]
 // CHECK:STDOUT:   %assoc0.loc12_32.2: @As.%As.assoc_type (%As.assoc_type.335) = assoc_entity element0, %As.Convert.decl [symbolic = %assoc0.loc12_32.2 (constants.%assoc0.b00)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @As.%As.type (%As.type.596) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.654)]
+// CHECK:STDOUT:     %Self.loc11_24.1: @As.%As.type (%As.type.596) = symbolic_binding Self, 1 [symbolic = %Self.loc11_24.2 (constants.%Self.654)]
 // CHECK:STDOUT:     %As.Convert.decl: @As.%As.Convert.type (%As.Convert.type.7fa) = fn_decl @As.Convert [symbolic = @As.%As.Convert (constants.%As.Convert.1e3)] {
 // CHECK:STDOUT:       %self.patt: @As.Convert.%pattern_type.loc12_14 (%pattern_type.054) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @As.Convert.%pattern_type.loc12_14 (%pattern_type.054) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -324,7 +324,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @As.%T.loc11_14.2 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:       %self.param: @As.Convert.%Self.binding.as_type (%Self.binding.as_type.854) = value_param call_param0
 // CHECK:STDOUT:       %.loc12_20.1: type = splice_block %.loc12_20.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.854)] {
-// CHECK:STDOUT:         %.loc12_20.2: @As.Convert.%As.type (%As.type.596) = specific_constant @As.%Self.1, @As(constants.%T) [symbolic = %Self (constants.%Self.654)]
+// CHECK:STDOUT:         %.loc12_20.2: @As.Convert.%As.type (%As.type.596) = specific_constant @As.%Self.loc11_24.1, @As(constants.%T) [symbolic = %Self (constants.%Self.654)]
 // CHECK:STDOUT:         %Self.ref: @As.Convert.%As.type (%As.type.596) = name_ref Self, %.loc12_20.2 [symbolic = %Self (constants.%Self.654)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.854)]
 // CHECK:STDOUT:         %.loc12_20.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.854)]
@@ -336,7 +336,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:     %assoc0.loc12_32.1: @As.%As.assoc_type (%As.assoc_type.335) = assoc_entity element0, %As.Convert.decl [symbolic = %assoc0.loc12_32.2 (constants.%assoc0.b00)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc11_24.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .Convert = %assoc0.loc12_32.1
 // CHECK:STDOUT:     witness = (%As.Convert.decl)
@@ -348,14 +348,14 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%T.loc15_22.1)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
-// CHECK:STDOUT:   %Self.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.f50)]
+// CHECK:STDOUT:   %Self.loc15_32.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc15_32.2 (constants.%Self.f50)]
 // CHECK:STDOUT:   %ImplicitAs.Convert.type: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%T.loc15_22.1) [symbolic = %ImplicitAs.Convert.type (constants.%ImplicitAs.Convert.type.178)]
 // CHECK:STDOUT:   %ImplicitAs.Convert: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type.178) = struct_value () [symbolic = %ImplicitAs.Convert (constants.%ImplicitAs.Convert.1a0)]
 // CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs, @ImplicitAs(%T.loc15_22.1) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type.88c)]
 // CHECK:STDOUT:   %assoc0.loc16_32.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.88c) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc16_32.2 (constants.%assoc0.7d3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.f50)]
+// CHECK:STDOUT:     %Self.loc15_32.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc15_32.2 (constants.%Self.f50)]
 // CHECK:STDOUT:     %ImplicitAs.Convert.decl: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type.178) = fn_decl @ImplicitAs.Convert [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert.1a0)] {
 // CHECK:STDOUT:       %self.patt: @ImplicitAs.Convert.%pattern_type.loc16_14 (%pattern_type.4e2) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @ImplicitAs.Convert.%pattern_type.loc16_14 (%pattern_type.4e2) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -365,7 +365,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @ImplicitAs.%T.loc15_22.2 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:       %self.param: @ImplicitAs.Convert.%Self.binding.as_type (%Self.binding.as_type.31f) = value_param call_param0
 // CHECK:STDOUT:       %.loc16_20.1: type = splice_block %.loc16_20.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.31f)] {
-// CHECK:STDOUT:         %.loc16_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%T) [symbolic = %Self (constants.%Self.f50)]
+// CHECK:STDOUT:         %.loc16_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.loc15_32.1, @ImplicitAs(constants.%T) [symbolic = %Self (constants.%Self.f50)]
 // CHECK:STDOUT:         %Self.ref: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = name_ref Self, %.loc16_20.2 [symbolic = %Self (constants.%Self.f50)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.31f)]
 // CHECK:STDOUT:         %.loc16_20.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type.31f)]
@@ -377,7 +377,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:     %assoc0.loc16_32.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.88c) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc16_32.2 (constants.%assoc0.7d3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_32.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .Convert = %assoc0.loc16_32.1
 // CHECK:STDOUT:     witness = (%ImplicitAs.Convert.decl)
@@ -483,7 +483,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: fn @Int(%N.param: Core.IntLiteral) -> type = "int.make_type_signed";
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @AddWith.Op(@AddWith.%T.loc7_19.2: type, @AddWith.%Self.1: @AddWith.%AddWith.type (%AddWith.type.302)) {
+// CHECK:STDOUT: generic fn @AddWith.Op(@AddWith.%T.loc7_19.2: type, @AddWith.%Self.loc7_29.1: @AddWith.%AddWith.type (%AddWith.type.302)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %AddWith.type: type = facet_type <@AddWith, @AddWith(%T)> [symbolic = %AddWith.type (constants.%AddWith.type.302)]
 // CHECK:STDOUT:   %Self: @AddWith.Op.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.236)]
@@ -493,7 +493,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:   fn(%self.param: @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054), %other.param: @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054)) -> @AddWith.Op.%Self.binding.as_type (%Self.binding.as_type.054);
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @As.Convert(@As.%T.loc11_14.2: type, @As.%Self.1: @As.%As.type (%As.type.596)) {
+// CHECK:STDOUT: generic fn @As.Convert(@As.%T.loc11_14.2: type, @As.%Self.loc11_24.1: @As.%As.type (%As.type.596)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %As.type: type = facet_type <@As, @As(%T)> [symbolic = %As.type (constants.%As.type.596)]
 // CHECK:STDOUT:   %Self: @As.Convert.%As.type (%As.type.596) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.654)]
@@ -504,7 +504,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:   fn(%self.param: @As.Convert.%Self.binding.as_type (%Self.binding.as_type.854)) -> @As.Convert.%T (%T);
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%T.loc15_22.2: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
+// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%T.loc15_22.2: type, @ImplicitAs.%Self.loc15_32.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%T)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
 // CHECK:STDOUT:   %Self: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.f50)]
@@ -566,7 +566,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %AddWith.type => constants.%AddWith.type.f1c
-// CHECK:STDOUT:   %Self.2 => constants.%Self.203
+// CHECK:STDOUT:   %Self.loc7_29.2 => constants.%Self.203
 // CHECK:STDOUT:   %AddWith.Op.type => constants.%AddWith.Op.type.efc
 // CHECK:STDOUT:   %AddWith.Op => constants.%AddWith.Op.a62
 // CHECK:STDOUT:   %AddWith.assoc_type => constants.%AddWith.assoc_type.a65
@@ -586,7 +586,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %As.type => constants.%As.type.cf8
-// CHECK:STDOUT:   %Self.2 => constants.%Self.21a
+// CHECK:STDOUT:   %Self.loc11_24.2 => constants.%Self.21a
 // CHECK:STDOUT:   %As.Convert.type => constants.%As.Convert.type.c0d
 // CHECK:STDOUT:   %As.Convert => constants.%As.Convert.713
 // CHECK:STDOUT:   %As.assoc_type => constants.%As.assoc_type.b9b
@@ -607,7 +607,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.adc
-// CHECK:STDOUT:   %Self.2 => constants.%Self.3bf
+// CHECK:STDOUT:   %Self.loc15_32.2 => constants.%Self.3bf
 // CHECK:STDOUT:   %ImplicitAs.Convert.type => constants.%ImplicitAs.Convert.type.752
 // CHECK:STDOUT:   %ImplicitAs.Convert => constants.%ImplicitAs.Convert.fcc
 // CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.1cf
@@ -628,7 +628,7 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.0d7
-// CHECK:STDOUT:   %Self.2 => constants.%Self.f3e
+// CHECK:STDOUT:   %Self.loc15_32.2 => constants.%Self.f3e
 // CHECK:STDOUT:   %ImplicitAs.Convert.type => constants.%ImplicitAs.Convert.type.60e
 // CHECK:STDOUT:   %ImplicitAs.Convert => constants.%ImplicitAs.Convert.c73
 // CHECK:STDOUT:   %ImplicitAs.assoc_type => constants.%ImplicitAs.assoc_type.014
@@ -766,11 +766,11 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:   %Core.Int: %Int.type = import_ref Core//default, Int, loaded [concrete = constants.%Int]
 // CHECK:STDOUT:   %Core.As: %As.type.90f = import_ref Core//default, As, loaded [concrete = constants.%As.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.1: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @As.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.375 = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.375 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.471: @As.%As.assoc_type (%As.assoc_type.10e) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @As.%assoc0 (constants.%assoc0.964)]
 // CHECK:STDOUT:   %Core.Convert.924 = import_ref Core//default, Convert, unloaded
 // CHECK:STDOUT:   %Core.import_ref.efcd44.2: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @As.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.1a4: @As.%As.type (%As.type.2c2) = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @As.%Self (constants.%Self.aa9)]
+// CHECK:STDOUT:   %Core.import_ref.1a4: @As.%As.type (%As.type.2c2) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @As.%Self (constants.%Self.aa9)]
 // CHECK:STDOUT:   %Core.import_ref.7a4: @As.%As.Convert.type (%As.Convert.type.169) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @As.%As.Convert (constants.%As.Convert.70f)]
 // CHECK:STDOUT:   %Core.import_ref.048 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.931: <witness> = import_ref Core//default, loc{{\d+_\d+}}, loaded [concrete = constants.%As.impl_witness]
@@ -780,11 +780,11 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:   %As.impl_witness_table = impl_witness_table (%Core.import_ref.a36), @Core.IntLiteral.as.As.impl [concrete]
 // CHECK:STDOUT:   %Core.AddWith: %AddWith.type.e05 = import_ref Core//default, AddWith, loaded [concrete = constants.%AddWith.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.3: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @AddWith.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.833 = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.833 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.d7c: @AddWith.%AddWith.assoc_type (%AddWith.assoc_type.dc1) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @AddWith.%assoc0 (constants.%assoc0.941)]
 // CHECK:STDOUT:   %Core.Op = import_ref Core//default, Op, unloaded
 // CHECK:STDOUT:   %Core.import_ref.efcd44.4: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @AddWith.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.54a: @AddWith.%AddWith.type (%AddWith.type.51e) = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @AddWith.%Self (constants.%Self.895)]
+// CHECK:STDOUT:   %Core.import_ref.54a: @AddWith.%AddWith.type (%AddWith.type.51e) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @AddWith.%Self (constants.%Self.895)]
 // CHECK:STDOUT:   %Core.import_ref.4ac: @AddWith.%AddWith.Op.type (%AddWith.Op.type.e78) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @AddWith.%AddWith.Op (constants.%AddWith.Op.e03)]
 // CHECK:STDOUT:   %Core.import_ref.91e = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.8af: <witness> = import_ref Core//default, loc{{\d+_\d+}}, loaded [concrete = constants.%AddWith.impl_witness]
@@ -794,11 +794,11 @@ var arr: array(i32, (1 as i32) + (2 as i32)) = (3, 4, (3 as i32) + (4 as i32));
 // CHECK:STDOUT:   %AddWith.impl_witness_table = impl_witness_table (%Core.import_ref.980), @i32.builtin.as.AddWith.impl [concrete]
 // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//default, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.5: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.b9c: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.8b5) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.7b6)]
 // CHECK:STDOUT:   %Core.Convert.acf = import_ref Core//default, Convert, unloaded
 // CHECK:STDOUT:   %Core.import_ref.efcd44.6: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%T (constants.%T)]
-// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
+// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
 // CHECK:STDOUT:   %Core.import_ref.b91295.1: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type.4c8) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert.e9f)]
 // CHECK:STDOUT:   %Core.import_ref.d11 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.8a9: <witness> = import_ref Core//default, loc{{\d+_\d+}}, loaded [concrete = constants.%ImplicitAs.impl_witness.c15]

toolchain/check/testdata/function/generic/call_method_on_generic_facet.carbon

@@ -166,19 +166,19 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%Scalar.loc15_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68bb8d.1)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:   %Self.loc15_34.2: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc15_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:   %Generic.F.type: type = fn_type @Generic.F, @Generic(%Scalar.loc15_19.1) [symbolic = %Generic.F.type (constants.%Generic.F.type.fc1c8a.1)]
 // CHECK:STDOUT:   %Generic.F: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = struct_value () [symbolic = %Generic.F (constants.%Generic.F.d952d5.1)]
 // CHECK:STDOUT:   %Generic.assoc_type: type = assoc_entity_type @Generic, @Generic(%Scalar.loc15_19.1) [symbolic = %Generic.assoc_type (constants.%Generic.assoc_type.414a90.1)]
 // CHECK:STDOUT:   %assoc0.loc16_9.2: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc16_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1c73.1)]
+// CHECK:STDOUT:     %Self.loc15_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc15_34.2 (constants.%Self.fc1c73.1)]
 // CHECK:STDOUT:     %Generic.F.decl: @Generic.%Generic.F.type (%Generic.F.type.fc1c8a.1) = fn_decl @Generic.F [symbolic = @Generic.%Generic.F (constants.%Generic.F.d952d5.1)] {} {}
 // CHECK:STDOUT:     %assoc0.loc16_9.1: @Generic.%Generic.assoc_type (%Generic.assoc_type.414a90.1) = assoc_entity element0, %Generic.F.decl [symbolic = %assoc0.loc16_9.2 (constants.%assoc0.3122a2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_34.1
 // CHECK:STDOUT:     .F = %assoc0.loc16_9.1
 // CHECK:STDOUT:     witness = (%Generic.F.decl)
 // CHECK:STDOUT:   }
@@ -227,7 +227,7 @@ fn G() {
 // CHECK:STDOUT:   .Self = constants.%ImplsGeneric
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc15_19.2: type, @Generic.%Self.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
+// CHECK:STDOUT: generic fn @Generic.F(@Generic.%Scalar.loc15_19.2: type, @Generic.%Self.loc15_34.1: @Generic.%Generic.type (%Generic.type.68bb8d.1)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -296,7 +296,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.621
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ae2
+// CHECK:STDOUT:   %Self.loc15_34.2 => constants.%Self.ae2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.4cf
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.118
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.713
@@ -314,7 +314,7 @@ fn G() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.68bb8d.2
-// CHECK:STDOUT:   %Self.2 => constants.%Self.fc1c73.2
+// CHECK:STDOUT:   %Self.loc15_34.2 => constants.%Self.fc1c73.2
 // CHECK:STDOUT:   %Generic.F.type => constants.%Generic.F.type.fc1c8a.2
 // CHECK:STDOUT:   %Generic.F => constants.%Generic.F.d952d5.2
 // CHECK:STDOUT:   %Generic.assoc_type => constants.%Generic.assoc_type.414a90.2

toolchain/check/testdata/function/generic/fail_deduce_imported_function.carbon

@@ -148,7 +148,7 @@ fn B() {
 // CHECK:STDOUT:     import Lib//default
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Lib.Z: type = import_ref Lib//default, Z, loaded [concrete = constants.%Z.type]
-// CHECK:STDOUT:   %Lib.import_ref.462 = import_ref Lib//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Lib.import_ref.462 = import_ref Lib//default, loc3_13, unloaded
 // CHECK:STDOUT:   %Lib.A: %A.type.fad = import_ref Lib//default, A, loaded [concrete = constants.%A.7a0]
 // CHECK:STDOUT:   %Lib.import_ref.552: %Z.type = import_ref Lib//default, loc4_6, loaded [symbolic = @A.1.%T (constants.%T)]
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/assoc_const_self.carbon

@@ -656,25 +656,25 @@ fn CallF() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%N.loc4_13.1)> [symbolic = %I.type (constants.%I.type.f7b)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.f7b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d78)]
+// CHECK:STDOUT:   %Self.loc4_36.2: @I.%I.type (%I.type.f7b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_36.2 (constants.%Self.d78)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%N.loc4_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type.44f)]
 // CHECK:STDOUT:   %assoc0: @I.%I.assoc_type (%I.assoc_type.44f) = assoc_entity element0, %V [symbolic = %assoc0 (constants.%assoc0.8bd)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.f7b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d78)]
+// CHECK:STDOUT:     %Self.loc4_36.1: @I.%I.type (%I.type.f7b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_36.2 (constants.%Self.d78)]
 // CHECK:STDOUT:     %V: @V.%array_type (%array_type) = assoc_const_decl @V [concrete] {
 // CHECK:STDOUT:       %assoc0: @I.%I.assoc_type (%I.assoc_type.44f) = assoc_entity element0, @I.%V [symbolic = @I.%assoc0 (constants.%assoc0.8bd)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_36.1
 // CHECK:STDOUT:     .N = <poisoned>
 // CHECK:STDOUT:     .V = @V.%assoc0
 // CHECK:STDOUT:     witness = (%V)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @V(@I.%N.loc4_13.2: Core.IntLiteral, @I.%Self.1: @I.%I.type (%I.type.f7b)) {
+// CHECK:STDOUT: generic assoc_const @V(@I.%N.loc4_13.2: Core.IntLiteral, @I.%Self.loc4_36.1: @I.%I.type (%I.type.f7b)) {
 // CHECK:STDOUT:   %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic = %N (constants.%N)]
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%N)> [symbolic = %I.type (constants.%I.type.f7b)]
 // CHECK:STDOUT:   %Self: @V.%I.type (%I.type.f7b) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.d78)]
@@ -708,7 +708,7 @@ fn CallF() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.f11
-// CHECK:STDOUT:   %Self.2 => constants.%Self.623
+// CHECK:STDOUT:   %Self.loc4_36.2 => constants.%Self.623
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.247
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.63a
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/compound.carbon

@@ -157,14 +157,14 @@ fn InstanceCallFail() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest.loc3_22.1)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
-// CHECK:STDOUT:   %Self.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc3_35.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:   %ImplicitAs.Convert.type: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.Convert.type (constants.%ImplicitAs.Convert.type)]
 // CHECK:STDOUT:   %ImplicitAs.Convert: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = struct_value () [symbolic = %ImplicitAs.Convert (constants.%ImplicitAs.Convert)]
 // CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc4_35.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:     %ImplicitAs.Convert.decl: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = fn_decl @ImplicitAs.Convert [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert)] {
 // CHECK:STDOUT:       %self.patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -174,7 +174,7 @@ fn InstanceCallFail() {
 // CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @ImplicitAs.%Dest.loc3_22.2 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:       %self.param: @ImplicitAs.Convert.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc4_20.1: type = splice_block %.loc4_20.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.loc3_35.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.ref: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = name_ref Self, %.loc4_20.2 [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc4_20.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -186,14 +186,14 @@ fn InstanceCallFail() {
 // CHECK:STDOUT:     %assoc0.loc4_35.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_35.1
 // CHECK:STDOUT:     .Dest = <poisoned>
 // CHECK:STDOUT:     .Convert = %assoc0.loc4_35.1
 // CHECK:STDOUT:     witness = (%ImplicitAs.Convert.decl)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
+// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
 // CHECK:STDOUT:   %Dest: type = symbolic_binding Dest, 0 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
 // CHECK:STDOUT:   %Self: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self)]
@@ -346,11 +346,11 @@ fn InstanceCallFail() {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//default, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.1: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.b9c: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.8b5) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.7b6)]
 // CHECK:STDOUT:   %Core.Convert = import_ref Core//default, Convert, unloaded
 // CHECK:STDOUT:   %Core.import_ref.efcd44.2: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
+// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
 // CHECK:STDOUT:   %Core.import_ref.b91: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type.4c8) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert.e9f)]
 // CHECK:STDOUT:   %Core.import_ref.d11 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT: }
@@ -528,11 +528,11 @@ fn InstanceCallFail() {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//default, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.1: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.d6f = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.b9c: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type.8b5) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%assoc0 (constants.%assoc0.7b6)]
 // CHECK:STDOUT:   %Core.Convert = import_ref Core//default, Convert, unloaded
 // CHECK:STDOUT:   %Core.import_ref.efcd44.2: type = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Dest (constants.%Dest)]
-// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
+// CHECK:STDOUT:   %Core.import_ref.4ff: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2d9) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%Self (constants.%Self.4f1)]
 // CHECK:STDOUT:   %Core.import_ref.b91: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type.4c8) = import_ref Core//default, loc{{\d+_\d+}}, loaded [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert.e9f)]
 // CHECK:STDOUT:   %Core.import_ref.d11 = import_ref Core//default, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/extend_impl_generic.carbon

@@ -190,14 +190,14 @@ class X(U:! type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type: type = facet_type <@HasF, @HasF(%T.loc4_16.1)> [symbolic = %HasF.type (constants.%HasF.type.59b)]
-// CHECK:STDOUT:   %Self.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:   %Self.loc4_26.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:   %HasF.F.type: type = fn_type @HasF.F, @HasF(%T.loc4_16.1) [symbolic = %HasF.F.type (constants.%HasF.F.type.940)]
 // CHECK:STDOUT:   %HasF.F: @HasF.%HasF.F.type (%HasF.F.type.940) = struct_value () [symbolic = %HasF.F (constants.%HasF.F.86b)]
 // CHECK:STDOUT:   %HasF.assoc_type: type = assoc_entity_type @HasF, @HasF(%T.loc4_16.1) [symbolic = %HasF.assoc_type (constants.%HasF.assoc_type.1aa)]
 // CHECK:STDOUT:   %assoc0.loc5_14.2: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_14.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:     %Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:     %HasF.F.decl: @HasF.%HasF.F.type (%HasF.F.type.940) = fn_decl @HasF.F [symbolic = @HasF.%HasF.F (constants.%HasF.F.86b)] {
 // CHECK:STDOUT:       %return.patt: @HasF.F.%pattern_type (%pattern_type.e6836e.1) = return_slot_pattern [concrete]
 // CHECK:STDOUT:       %return.param_patt: @HasF.F.%pattern_type (%pattern_type.e6836e.1) = out_param_pattern %return.patt, call_param0 [concrete]
@@ -209,7 +209,7 @@ class X(U:! type) {
 // CHECK:STDOUT:     %assoc0.loc5_14.1: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_14.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_26.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc5_14.1
 // CHECK:STDOUT:     .Param = <poisoned>
@@ -265,7 +265,7 @@ class X(U:! type) {
 // CHECK:STDOUT:   extend @C.as.HasF.impl.%HasF.type
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.1: @HasF.%HasF.type (%HasF.type.59b)) {
+// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T.d9f)]
 // CHECK:STDOUT:   %pattern_type: type = pattern_type %T [symbolic = %pattern_type (constants.%pattern_type.e6836e.1)]
 // CHECK:STDOUT:
@@ -367,7 +367,7 @@ class X(U:! type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type => constants.%HasF.type.aca
-// CHECK:STDOUT:   %Self.2 => constants.%Self.026
+// CHECK:STDOUT:   %Self.loc4_26.2 => constants.%Self.026
 // CHECK:STDOUT:   %HasF.F.type => constants.%HasF.F.type.7f1
 // CHECK:STDOUT:   %HasF.F => constants.%HasF.F.eff
 // CHECK:STDOUT:   %HasF.assoc_type => constants.%HasF.assoc_type.257
@@ -453,14 +453,14 @@ class X(U:! type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T.loc4_13.1)> [symbolic = %I.type (constants.%I.type.07036d.1)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.07036d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.2694d8.1)]
+// CHECK:STDOUT:   %Self.loc4_23.2: @I.%I.type (%I.type.07036d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self.2694d8.1)]
 // CHECK:STDOUT:   %I.F.type: type = fn_type @I.F, @I(%T.loc4_13.1) [symbolic = %I.F.type (constants.%I.F.type.76d346.1)]
 // CHECK:STDOUT:   %I.F: @I.%I.F.type (%I.F.type.76d346.1) = struct_value () [symbolic = %I.F (constants.%I.F.dde9b0.1)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%T.loc4_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type.b650b2.1)]
 // CHECK:STDOUT:   %assoc0.loc5_25.2: @I.%I.assoc_type (%I.assoc_type.b650b2.1) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc5_25.2 (constants.%assoc0.b4fda0.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.07036d.1) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.2694d8.1)]
+// CHECK:STDOUT:     %Self.loc4_23.1: @I.%I.type (%I.type.07036d.1) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self.2694d8.1)]
 // CHECK:STDOUT:     %I.F.decl: @I.%I.F.type (%I.F.type.76d346.1) = fn_decl @I.F [symbolic = @I.%I.F (constants.%I.F.dde9b0.1)] {
 // CHECK:STDOUT:       %self.patt: @I.F.%pattern_type.loc5_8 (%pattern_type.dbc) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @I.F.%pattern_type.loc5_8 (%pattern_type.dbc) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -469,7 +469,7 @@ class X(U:! type) {
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %self.param: @I.F.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc5_14.1: type = splice_block %.loc5_14.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc5_14.2: @I.F.%I.type (%I.type.07036d.1) = specific_constant @I.%Self.1, @I(constants.%T) [symbolic = %Self (constants.%Self.2694d8.1)]
+// CHECK:STDOUT:         %.loc5_14.2: @I.F.%I.type (%I.type.07036d.1) = specific_constant @I.%Self.loc4_23.1, @I(constants.%T) [symbolic = %Self (constants.%Self.2694d8.1)]
 // CHECK:STDOUT:         %Self.ref: @I.F.%I.type (%I.type.07036d.1) = name_ref Self, %.loc5_14.2 [symbolic = %Self (constants.%Self.2694d8.1)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc5_14.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -482,7 +482,7 @@ class X(U:! type) {
 // CHECK:STDOUT:     %assoc0.loc5_25.1: @I.%I.assoc_type (%I.assoc_type.b650b2.1) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc5_25.2 (constants.%assoc0.b4fda0.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_23.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc5_25.1
 // CHECK:STDOUT:     .U = <poisoned>
@@ -554,7 +554,7 @@ class X(U:! type) {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @I.F(@I.%T.loc4_13.2: type, @I.%Self.1: @I.%I.type (%I.type.07036d.1)) {
+// CHECK:STDOUT: generic fn @I.F(@I.%T.loc4_13.2: type, @I.%Self.loc4_23.1: @I.%I.type (%I.type.07036d.1)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T)> [symbolic = %I.type (constants.%I.type.07036d.1)]
 // CHECK:STDOUT:   %Self: @I.F.%I.type (%I.type.07036d.1) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.2694d8.1)]
@@ -609,7 +609,7 @@ class X(U:! type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.07036d.2
-// CHECK:STDOUT:   %Self.2 => constants.%Self.2694d8.2
+// CHECK:STDOUT:   %Self.loc4_23.2 => constants.%Self.2694d8.2
 // CHECK:STDOUT:   %I.F.type => constants.%I.F.type.76d346.2
 // CHECK:STDOUT:   %I.F => constants.%I.F.dde9b0.2
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.b650b2.2

toolchain/check/testdata/impl/fail_extend_impl_forall.carbon

@@ -71,14 +71,14 @@ class C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %GenericInterface.type: type = facet_type <@GenericInterface, @GenericInterface(%T.loc15_28.1)> [symbolic = %GenericInterface.type (constants.%GenericInterface.type.114)]
-// CHECK:STDOUT:   %Self.2: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc15_38.2: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.loc15_38.2 (constants.%Self)]
 // CHECK:STDOUT:   %GenericInterface.F.type: type = fn_type @GenericInterface.F, @GenericInterface(%T.loc15_28.1) [symbolic = %GenericInterface.F.type (constants.%GenericInterface.F.type)]
 // CHECK:STDOUT:   %GenericInterface.F: @GenericInterface.%GenericInterface.F.type (%GenericInterface.F.type) = struct_value () [symbolic = %GenericInterface.F (constants.%GenericInterface.F)]
 // CHECK:STDOUT:   %GenericInterface.assoc_type: type = assoc_entity_type @GenericInterface, @GenericInterface(%T.loc15_28.1) [symbolic = %GenericInterface.assoc_type (constants.%GenericInterface.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc16_13.2: @GenericInterface.%GenericInterface.assoc_type (%GenericInterface.assoc_type) = assoc_entity element0, %GenericInterface.F.decl [symbolic = %assoc0.loc16_13.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc15_38.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.loc15_38.2 (constants.%Self)]
 // CHECK:STDOUT:     %GenericInterface.F.decl: @GenericInterface.%GenericInterface.F.type (%GenericInterface.F.type) = fn_decl @GenericInterface.F [symbolic = @GenericInterface.%GenericInterface.F (constants.%GenericInterface.F)] {
 // CHECK:STDOUT:       %x.patt: @GenericInterface.F.%pattern_type (%pattern_type.e68) = value_binding_pattern x [concrete]
 // CHECK:STDOUT:       %x.param_patt: @GenericInterface.F.%pattern_type (%pattern_type.e68) = value_param_pattern %x.patt, call_param0 [concrete]
@@ -90,7 +90,7 @@ class C {
 // CHECK:STDOUT:     %assoc0.loc16_13.1: @GenericInterface.%GenericInterface.assoc_type (%GenericInterface.assoc_type) = assoc_entity element0, %GenericInterface.F.decl [symbolic = %assoc0.loc16_13.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_38.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc16_13.1
 // CHECK:STDOUT:     witness = (%GenericInterface.F.decl)
@@ -147,7 +147,7 @@ class C {
 // CHECK:STDOUT:   has_error
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @GenericInterface.F(@GenericInterface.%T.loc15_28.2: type, @GenericInterface.%Self.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114)) {
+// CHECK:STDOUT: generic fn @GenericInterface.F(@GenericInterface.%T.loc15_28.2: type, @GenericInterface.%Self.loc15_38.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %pattern_type: type = pattern_type %T [symbolic = %pattern_type (constants.%pattern_type.e68)]
 // CHECK:STDOUT:
@@ -172,7 +172,7 @@ class C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %GenericInterface.type => constants.%GenericInterface.type.114
-// CHECK:STDOUT:   %Self.2 => constants.%Self
+// CHECK:STDOUT:   %Self.loc15_38.2 => constants.%Self
 // CHECK:STDOUT:   %GenericInterface.F.type => constants.%GenericInterface.F.type
 // CHECK:STDOUT:   %GenericInterface.F => constants.%GenericInterface.F
 // CHECK:STDOUT:   %GenericInterface.assoc_type => constants.%GenericInterface.assoc_type

toolchain/check/testdata/impl/forward_decls.carbon

@@ -1126,24 +1126,24 @@ interface I {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%U.loc3_13.1)> [symbolic = %I.type (constants.%I.type.070)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:   %Self.loc3_23.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%U.loc3_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type.b65)]
 // CHECK:STDOUT:   %assoc0: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, %T [symbolic = %assoc0 (constants.%assoc0.d48)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:     %Self.loc3_23.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:     %T: type = assoc_const_decl @T [concrete] {
 // CHECK:STDOUT:       %assoc0: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, @I.%T [symbolic = @I.%assoc0 (constants.%assoc0.d48)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_23.1
 // CHECK:STDOUT:     .T = @T.%assoc0
 // CHECK:STDOUT:     witness = (%T)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @T(@I.%U.loc3_13.2: type, @I.%Self.1: @I.%I.type (%I.type.070)) {
+// CHECK:STDOUT: generic assoc_const @T(@I.%U.loc3_13.2: type, @I.%Self.loc3_23.1: @I.%I.type (%I.type.070)) {
 // CHECK:STDOUT:   assoc_const T:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -1179,7 +1179,7 @@ interface I {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.fc3
-// CHECK:STDOUT:   %Self.2 => constants.%Self.8a8
+// CHECK:STDOUT:   %Self.loc3_23.2 => constants.%Self.8a8
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.b3c
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.3e4
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/import_builtin_call.carbon

@@ -474,11 +474,11 @@ var n: Int(64) = MakeFromClass(FromLiteral(64) as OtherInt);
 // CHECK:STDOUT:   %Main.import_ref.40af26.1: Core.IntLiteral = import_ref Main//generic_impl, loc11_13, loaded [symbolic = @MyInt.%N (constants.%N)]
 // CHECK:STDOUT:   %Main.import_ref.ac2: <witness> = import_ref Main//generic_impl, loc13_1, loaded [symbolic = @MyInt.%complete_type (constants.%complete_type.a2d)]
 // CHECK:STDOUT:   %Main.import_ref.0ad = import_ref Main//generic_impl, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.c52 = import_ref Main//generic_impl, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.c52 = import_ref Main//generic_impl, loc4_15, unloaded
 // CHECK:STDOUT:   %Main.import_ref.f99: %Add.assoc_type = import_ref Main//generic_impl, loc5_41, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.Op = import_ref Main//generic_impl, Op, unloaded
 // CHECK:STDOUT:   %Main.import_ref.5a3: %Add.Op.type = import_ref Main//generic_impl, loc5_41, loaded [concrete = constants.%Add.Op]
-// CHECK:STDOUT:   %Main.import_ref.a78: %Add.type = import_ref Main//generic_impl, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.a78: %Add.type = import_ref Main//generic_impl, loc4_15, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.06e: <witness> = import_ref Main//generic_impl, loc15_48, loaded [symbolic = @MyInt.as.Add.impl.%Add.impl_witness (constants.%Add.impl_witness.ec1)]
 // CHECK:STDOUT:   %Main.import_ref.40af26.2: Core.IntLiteral = import_ref Main//generic_impl, loc15_14, loaded [symbolic = @MyInt.as.Add.impl.%N (constants.%N)]
 // CHECK:STDOUT:   %Main.import_ref.fbc: type = import_ref Main//generic_impl, loc15_39, loaded [symbolic = @MyInt.as.Add.impl.%MyInt (constants.%MyInt.19f)]

toolchain/check/testdata/impl/import_compound.carbon

@@ -283,11 +283,11 @@ fn InstanceCallImportFail() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, loc3_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e3c: %NonInstance.assoc_type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.F = import_ref Main//lib, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.474: %NonInstance.F.type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%NonInstance.F]
-// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, loc3_23, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.890: <witness> = import_ref Main//lib, loc7_30, loaded [concrete = constants.%NonInstance.impl_witness]
 // CHECK:STDOUT:   %Main.import_ref.c9a: type = import_ref Main//lib, loc7_13, loaded [concrete = constants.%struct_type.i]
 // CHECK:STDOUT:   %Main.import_ref.ef5: type = import_ref Main//lib, loc7_18, loaded [concrete = constants.%NonInstance.type]
@@ -367,11 +367,11 @@ fn InstanceCallImportFail() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, loc3_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e3c: %NonInstance.assoc_type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%assoc0.8ce]
 // CHECK:STDOUT:   %Main.F = import_ref Main//lib, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.474: %NonInstance.F.type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%NonInstance.F]
-// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.381]
+// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, loc3_23, loaded [symbolic = constants.%Self.381]
 // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -447,11 +447,11 @@ fn InstanceCallImportFail() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.700 = import_ref Main//lib, loc3_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e3c: %NonInstance.assoc_type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%assoc0.8ce]
 // CHECK:STDOUT:   %Main.F = import_ref Main//lib, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.474: %NonInstance.F.type = import_ref Main//lib, loc4_9, loaded [concrete = constants.%NonInstance.F]
-// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.381]
+// CHECK:STDOUT:   %Main.import_ref.1ee: %NonInstance.type = import_ref Main//lib, loc3_23, loaded [symbolic = constants.%Self.381]
 // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -538,11 +538,11 @@ fn InstanceCallImportFail() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.34d = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.34d = import_ref Main//lib, loc11_20, unloaded
 // CHECK:STDOUT:   %Main.import_ref.124: %Instance.assoc_type = import_ref Main//lib, loc12_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.G = import_ref Main//lib, G, unloaded
 // CHECK:STDOUT:   %Main.import_ref.b4d: %Instance.G.type = import_ref Main//lib, loc12_21, loaded [concrete = constants.%Instance.G]
-// CHECK:STDOUT:   %Main.import_ref.2d8: %Instance.type = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.2d8: %Instance.type = import_ref Main//lib, loc11_20, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.4df: <witness> = import_ref Main//lib, loc15_27, loaded [concrete = constants.%Instance.impl_witness]
 // CHECK:STDOUT:   %Main.import_ref.c9a: type = import_ref Main//lib, loc15_13, loaded [concrete = constants.%struct_type.i]
 // CHECK:STDOUT:   %Main.import_ref.b49: type = import_ref Main//lib, loc15_18, loaded [concrete = constants.%Instance.type]
@@ -667,11 +667,11 @@ fn InstanceCallImportFail() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.34d = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.34d = import_ref Main//lib, loc11_20, unloaded
 // CHECK:STDOUT:   %Main.import_ref.124: %Instance.assoc_type = import_ref Main//lib, loc12_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.G = import_ref Main//lib, G, unloaded
 // CHECK:STDOUT:   %Main.import_ref.b4d: %Instance.G.type = import_ref Main//lib, loc12_21, loaded [concrete = constants.%Instance.G]
-// CHECK:STDOUT:   %Main.import_ref.2d8: %Instance.type = import_ref Main//lib, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.2d8: %Instance.type = import_ref Main//lib, loc11_20, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.8a7 = import_ref Main//lib, loc15_27, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c9a: type = import_ref Main//lib, loc15_13, loaded [concrete = constants.%struct_type.i]
 // CHECK:STDOUT:   %Main.import_ref.b49: type = import_ref Main//lib, loc15_18, loaded [concrete = constants.%Instance.type]

toolchain/check/testdata/impl/import_extend_impl.carbon

@@ -141,7 +141,7 @@ fn G(c: C) {
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//extend_impl_library, loc12_1, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.2c4 = import_ref Main//extend_impl_library, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.3019d1.1: type = import_ref Main//extend_impl_library, loc9_18, loaded [concrete = constants.%I.type]
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//extend_impl_library, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//extend_impl_library, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c44: %I.assoc_type = import_ref Main//extend_impl_library, loc5_9, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.F = import_ref Main//extend_impl_library, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e03: %I.F.type = import_ref Main//extend_impl_library, loc5_9, loaded [concrete = constants.%I.F]
@@ -150,7 +150,7 @@ fn G(c: C) {
 // CHECK:STDOUT:   %Main.import_ref.3019d1.2: type = import_ref Main//extend_impl_library, loc9_18, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.import_ref.863: %C.as.I.impl.F.type = import_ref Main//extend_impl_library, loc10_12, loaded [concrete = constants.%C.as.I.impl.F]
 // CHECK:STDOUT:   %I.impl_witness_table = impl_witness_table (%Main.import_ref.863), @C.as.I.impl [concrete]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//extend_impl_library, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//extend_impl_library, loc4_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {

toolchain/check/testdata/impl/import_generic.carbon

@@ -178,13 +178,13 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T.loc5_13.1)> [symbolic = %I.type (constants.%I.type.070)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:   %Self.loc5_23.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:     %Self.loc5_23.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc5_23.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -231,7 +231,7 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.070
-// CHECK:STDOUT:   %Self.2 => constants.%Self.269
+// CHECK:STDOUT:   %Self.loc5_23.2 => constants.%Self.269
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @C.as.I.impl.f3e(constants.%T) {
@@ -245,7 +245,7 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.229
-// CHECK:STDOUT:   %Self.2 => constants.%Self.6d0
+// CHECK:STDOUT:   %Self.loc5_23.2 => constants.%Self.6d0
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @C.as.I.impl.1fd(constants.%T) {
@@ -283,7 +283,7 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:   %Main.C: type = import_ref Main//import_generic, C, loaded [concrete = constants.%C]
 // CHECK:STDOUT:   %Main.I: %I.type.dac = import_ref Main//import_generic, I, loaded [concrete = constants.%I.generic]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//import_generic, loc5_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//import_generic, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//import_generic, loc5_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e46 = import_ref Main//import_generic, loc8_33, unloaded
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//import_generic, loc4_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.2c4 = import_ref Main//import_generic, inst{{[0-9A-F]+}} [no loc], unloaded
@@ -555,13 +555,13 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %J.type: type = facet_type <@J, @J(%T.loc5_13.1)> [symbolic = %J.type (constants.%J.type.8ec)]
-// CHECK:STDOUT:   %Self.2: @J.%J.type (%J.type.8ec) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc5_23.2: @J.%J.type (%J.type.8ec) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @J.%J.type (%J.type.8ec) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc5_23.1: @J.%J.type (%J.type.8ec) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc5_23.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -636,7 +636,7 @@ impl forall [T:! type] D as J(T*) {}
 // CHECK:STDOUT:   %Main.D: type = import_ref Main//import_generic_decl, D, loaded [concrete = constants.%D]
 // CHECK:STDOUT:   %Main.J: %J.type.2b8 = import_ref Main//import_generic_decl, J, loaded [concrete = constants.%J.generic]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//import_generic_decl, loc5_13, loaded [symbolic = @J.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.b3b = import_ref Main//import_generic_decl, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.b3b = import_ref Main//import_generic_decl, loc5_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//import_generic_decl, loc4_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.cab = import_ref Main//import_generic_decl, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//import_generic_decl, loc11_14, loaded [symbolic = @D.as.J.impl.b470bf.1.%T (constants.%T)]

toolchain/check/testdata/impl/import_interface_assoc_const.carbon

@@ -330,12 +330,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -418,12 +418,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -523,12 +523,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -622,12 +622,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -735,7 +735,7 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I = import_ref Main//interface, I, unloaded
 // CHECK:STDOUT:   %Main.I3: type = import_ref Main//interface, I3, loaded [concrete = constants.%I3.type]
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.cd2 = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.cd2 = import_ref Main//interface, loc5_14, unloaded
 // CHECK:STDOUT:   %Main.import_ref.f5f: %I3.assoc_type = import_ref Main//interface, loc6_9, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.import_ref.680: %I3.assoc_type = import_ref Main//interface, loc7_9, loaded [concrete = constants.%assoc1]
 // CHECK:STDOUT:   %Main.import_ref.181: %I3.assoc_type = import_ref Main//interface, loc8_9, loaded [concrete = constants.%assoc2]
@@ -744,13 +744,13 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.T3 = import_ref Main//interface, T3, unloaded
 // CHECK:STDOUT:   %Main.import_ref.5fb: type = import_ref Main//interface, loc6_9, loaded [concrete = %T1]
 // CHECK:STDOUT:   %T1: type = assoc_const_decl @T1 [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.fbb73e.1: %I3.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.fbb73e.1: %I3.type = import_ref Main//interface, loc5_14, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.e26: type = import_ref Main//interface, loc7_9, loaded [concrete = %T2]
 // CHECK:STDOUT:   %T2: type = assoc_const_decl @T2 [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.fbb73e.2: %I3.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.fbb73e.2: %I3.type = import_ref Main//interface, loc5_14, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.e32: type = import_ref Main//interface, loc8_9, loaded [concrete = %T3]
 // CHECK:STDOUT:   %T3: type = assoc_const_decl @T3 [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.fbb73e.3: %I3.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.fbb73e.3: %I3.type = import_ref Main//interface, loc5_14, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -901,12 +901,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -996,12 +996,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T = import_ref Main//interface, T, unloaded
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1089,12 +1089,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T = import_ref Main//interface, T, unloaded
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1181,12 +1181,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T = import_ref Main//interface, T, unloaded
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1273,12 +1273,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T = import_ref Main//interface, T, unloaded
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1367,12 +1367,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//interface, I, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType = import_ref Main//interface, NonType, unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//interface, loc3_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.4fb: %I.assoc_type = import_ref Main//interface, loc3_20, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.T: type = import_ref Main//interface, T, loaded [concrete = %T]
 // CHECK:STDOUT:   %Main.import_ref.652: type = import_ref Main//interface, loc3_20, loaded [concrete = %T]
 // CHECK:STDOUT:   %T: type = assoc_const_decl @T [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//interface, loc3_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1467,12 +1467,12 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:   %Main.I = import_ref Main//interface, I, unloaded
 // CHECK:STDOUT:   %Main.I3 = import_ref Main//interface, I3, unloaded
 // CHECK:STDOUT:   %Main.NonType: type = import_ref Main//interface, NonType, loaded [concrete = constants.%NonType.type]
-// CHECK:STDOUT:   %Main.import_ref.b1e = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.b1e = import_ref Main//interface, loc11_19, unloaded
 // CHECK:STDOUT:   %Main.import_ref.9fa: %NonType.assoc_type = import_ref Main//interface, loc12_8, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.Y: %struct_type.a.225 = import_ref Main//interface, Y, loaded [concrete = %Y]
 // CHECK:STDOUT:   %Main.import_ref.f3d: %struct_type.a.225 = import_ref Main//interface, loc12_8, loaded [concrete = %Y]
 // CHECK:STDOUT:   %Y: %struct_type.a.225 = assoc_const_decl @Y [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.046: %NonType.type = import_ref Main//interface, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.046: %NonType.type = import_ref Main//interface, loc11_19, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -1599,11 +1599,11 @@ impl CD as IF where .F = 0 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.IF: type = import_ref Main//interface_with_function, IF, loaded [concrete = constants.%IF.type]
-// CHECK:STDOUT:   %Main.import_ref.14d = import_ref Main//interface_with_function, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.14d = import_ref Main//interface_with_function, loc3_14, unloaded
 // CHECK:STDOUT:   %Main.import_ref.f22: %IF.assoc_type = import_ref Main//interface_with_function, loc3_22, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.F: %IF.F.type = import_ref Main//interface_with_function, F, loaded [concrete = constants.%IF.F]
 // CHECK:STDOUT:   %Main.import_ref.4b7: %IF.F.type = import_ref Main//interface_with_function, loc3_22, loaded [concrete = constants.%IF.F]
-// CHECK:STDOUT:   %Main.import_ref.e8b: %IF.type = import_ref Main//interface_with_function, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e8b: %IF.type = import_ref Main//interface_with_function, loc3_14, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {

toolchain/check/testdata/impl/import_self.carbon

@@ -144,10 +144,10 @@ fn F(x: (), y: ()) -> () {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.c52 = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.c52 = import_ref Main//a, loc4_15, unloaded
 // CHECK:STDOUT:   %Main.import_ref.f99: %Add.assoc_type = import_ref Main//a, loc5_41, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.Op: %Add.Op.type = import_ref Main//a, Op, loaded [concrete = constants.%Add.Op]
-// CHECK:STDOUT:   %Main.import_ref.a78: %Add.type = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.a78: %Add.type = import_ref Main//a, loc4_15, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.5a3: %Add.Op.type = import_ref Main//a, loc5_41, loaded [concrete = constants.%Add.Op]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:

toolchain/check/testdata/impl/import_self_specific.carbon

@@ -345,25 +345,25 @@ impl forall [N:! E] D(N) as I where .Assoc = () {
 // CHECK:STDOUT:   %Main.Z = import_ref Main//impl_def, Z, unloaded
 // CHECK:STDOUT:   %Main.C: %C.type = import_ref Main//impl_def, C, loaded [concrete = constants.%C.generic]
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//impl_def, I, loaded [concrete = constants.%I.type]
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//impl_def, loc15_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.9ff: %I.assoc_type = import_ref Main//impl_def, loc16_12, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.import_ref.abf = import_ref Main//impl_def, loc24_20, unloaded
 // CHECK:STDOUT:   %Main.Assoc: %Y.type = import_ref Main//impl_def, Assoc, loaded [concrete = %Assoc]
 // CHECK:STDOUT:   %Main.F: %I.F.type = import_ref Main//impl_def, F, loaded [concrete = constants.%I.F]
 // CHECK:STDOUT:   %Main.import_ref.1d8: %Y.type = import_ref Main//impl_def, loc16_12, loaded [concrete = %Assoc]
-// CHECK:STDOUT:   %Main.import_ref.581 = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.581 = import_ref Main//impl_def, loc4_13, unloaded
 // CHECK:STDOUT:   %Assoc: %Y.type = assoc_const_decl @Assoc [concrete] {}
-// CHECK:STDOUT:   %Main.import_ref.e339be.1: %I.type = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9f2]
+// CHECK:STDOUT:   %Main.import_ref.e339be.1: %I.type = import_ref Main//impl_def, loc15_13, loaded [symbolic = constants.%Self.9f2]
 // CHECK:STDOUT:   %Main.import_ref.338: <witness> = import_ref Main//impl_def, loc5_31, loaded [symbolic = @T.as.Y.impl.%Y.impl_witness (constants.%Y.impl_witness.278)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//impl_def, loc5_14, loaded [symbolic = @T.as.Y.impl.%T (constants.%T)]
 // CHECK:STDOUT:   %Main.import_ref.cb5: type = import_ref Main//impl_def, loc5_24, loaded [symbolic = @T.as.Y.impl.%T (constants.%T)]
 // CHECK:STDOUT:   %Main.import_ref.0a1: type = import_ref Main//impl_def, loc5_29, loaded [concrete = constants.%Y.type]
 // CHECK:STDOUT:   %Y.impl_witness_table = impl_witness_table (), @T.as.Y.impl [concrete]
-// CHECK:STDOUT:   %Main.import_ref.462 = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.462 = import_ref Main//impl_def, loc8_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.62f: %Z.type = import_ref Main//impl_def, loc11_9, loaded [symbolic = @C.%V (constants.%V)]
 // CHECK:STDOUT:   %Main.import_ref.3fc: <witness> = import_ref Main//impl_def, loc13_1, loaded [concrete = constants.%complete_type.782]
 // CHECK:STDOUT:   %Main.import_ref.f7e = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.e339be.2: %I.type = import_ref Main//impl_def, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9f2]
+// CHECK:STDOUT:   %Main.import_ref.e339be.2: %I.type = import_ref Main//impl_def, loc15_13, loaded [symbolic = constants.%Self.9f2]
 // CHECK:STDOUT:   %Main.import_ref.cfb: <witness> = import_ref Main//impl_def, loc9_31, loaded [symbolic = @U.as.Z.impl.%Z.impl_witness (constants.%Z.impl_witness.5e4)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//impl_def, loc9_14, loaded [symbolic = @U.as.Z.impl.%U (constants.%U)]
 // CHECK:STDOUT:   %Main.import_ref.ff3: type = import_ref Main//impl_def, loc9_24, loaded [symbolic = @U.as.Z.impl.%U (constants.%U)]

toolchain/check/testdata/impl/import_thunk.carbon

@@ -154,10 +154,10 @@ fn G() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//a, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.507 = import_ref Main//a, loc5_14, unloaded
 // CHECK:STDOUT:   %Main.F: %I.F.type = import_ref Main//a, F, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9f2]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//a, loc4_13, loaded [symbolic = constants.%Self.9f2]
 // CHECK:STDOUT:   %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
 // CHECK:STDOUT:   %Core.import_ref.f99: %Destroy.assoc_type = import_ref Core//prelude/parts/destroy, loc{{\d+_\d+}}, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Core.import_ref.725: %Destroy.Op.type = import_ref Core//prelude/parts/destroy, loc{{\d+_\d+}}, loaded [concrete = constants.%Destroy.Op]
@@ -438,11 +438,11 @@ fn G() {
 // CHECK:STDOUT:   %Main.import_ref.7a8327.1: %empty_tuple.type = import_ref Main//b, loc5_9, loaded [symbolic = @C.%X (constants.%X)]
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//b, loc5_18, loaded [concrete = constants.%complete_type.357]
 // CHECK:STDOUT:   %Main.import_ref.176 = import_ref Main//b, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//a, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c44: %I.assoc_type = import_ref Main//a, loc5_14, loaded [concrete = constants.%assoc0.3f3]
 // CHECK:STDOUT:   %Main.F.8b9 = import_ref Main//a, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e03: %I.F.type = import_ref Main//a, loc5_14, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9f2]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//a, loc4_13, loaded [symbolic = constants.%Self.9f2]
 // CHECK:STDOUT:   %Main.import_ref.c03: <witness> = import_ref Main//b, loc7_32, loaded [symbolic = @C.as.I.impl.%I.impl_witness (constants.%I.impl_witness.9b0)]
 // CHECK:STDOUT:   %Main.import_ref.7a8327.2: %empty_tuple.type = import_ref Main//b, loc7_14, loaded [symbolic = @C.as.I.impl.%Y (constants.%Y)]
 // CHECK:STDOUT:   %Main.import_ref.801: type = import_ref Main//b, loc7_25, loaded [symbolic = @C.as.I.impl.%C (constants.%C.32c8ec.2)]

toolchain/check/testdata/impl/import_use_generic.carbon

@@ -219,11 +219,11 @@ fn H() -> C({}).(I.F)() {}
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//import_generic, loc4_9, loaded [symbolic = @C.%T (constants.%T)]
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//import_generic, loc4_20, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.034 = import_ref Main//import_generic, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//import_generic, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//import_generic, loc6_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c44: %I.assoc_type = import_ref Main//import_generic, loc7_9, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %Main.F = import_ref Main//import_generic, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e03: %I.F.type = import_ref Main//import_generic, loc7_9, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//import_generic, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//import_generic, loc6_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %Main.import_ref.bc1: <witness> = import_ref Main//import_generic, loc10_34, loaded [symbolic = @C.as.I.impl.%I.impl_witness (constants.%I.impl_witness.2ba)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//import_generic, loc10_14, loaded [symbolic = @C.as.I.impl.%T (constants.%T)]
 // CHECK:STDOUT:   %Main.import_ref.4d2: type = import_ref Main//import_generic, loc10_27, loaded [symbolic = @C.as.I.impl.%C (constants.%C.3f0)]

toolchain/check/testdata/impl/interface_args.carbon

@@ -144,14 +144,14 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest.loc3_22.1)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
-// CHECK:STDOUT:   %Self.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc3_35.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:   %ImplicitAs.Convert.type: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.Convert.type (constants.%ImplicitAs.Convert.type)]
 // CHECK:STDOUT:   %ImplicitAs.Convert: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = struct_value () [symbolic = %ImplicitAs.Convert (constants.%ImplicitAs.Convert)]
 // CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc4_35.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:     %ImplicitAs.Convert.decl: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = fn_decl @ImplicitAs.Convert [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert)] {
 // CHECK:STDOUT:       %self.patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -161,7 +161,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @ImplicitAs.%Dest.loc3_22.2 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:       %self.param: @ImplicitAs.Convert.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc4_20.1: type = splice_block %.loc4_20.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.loc3_35.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.ref: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = name_ref Self, %.loc4_20.2 [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc4_20.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -173,14 +173,14 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:     %assoc0.loc4_35.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_35.1
 // CHECK:STDOUT:     .Dest = <poisoned>
 // CHECK:STDOUT:     .Convert = %assoc0.loc4_35.1
 // CHECK:STDOUT:     witness = (%ImplicitAs.Convert.decl)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
+// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
 // CHECK:STDOUT:   %Dest: type = symbolic_binding Dest, 0 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
 // CHECK:STDOUT:   %Self: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self)]
@@ -292,21 +292,21 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Action.type: type = facet_type <@Action, @Action(%T.loc4_18.1)> [symbolic = %Action.type (constants.%Action.type.f0c)]
-// CHECK:STDOUT:   %Self.2: @Action.%Action.type (%Action.type.f0c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.e34)]
+// CHECK:STDOUT:   %Self.loc4_28.2: @Action.%Action.type (%Action.type.f0c) = symbolic_binding Self, 1 [symbolic = %Self.loc4_28.2 (constants.%Self.e34)]
 // CHECK:STDOUT:   %Action.Op.type: type = fn_type @Action.Op, @Action(%T.loc4_18.1) [symbolic = %Action.Op.type (constants.%Action.Op.type.0af)]
 // CHECK:STDOUT:   %Action.Op: @Action.%Action.Op.type (%Action.Op.type.0af) = struct_value () [symbolic = %Action.Op (constants.%Action.Op.afb)]
 // CHECK:STDOUT:   %Action.assoc_type: type = assoc_entity_type @Action, @Action(%T.loc4_18.1) [symbolic = %Action.assoc_type (constants.%Action.assoc_type.63f)]
 // CHECK:STDOUT:   %assoc0.loc5_22.2: @Action.%Action.assoc_type (%Action.assoc_type.63f) = assoc_entity element0, %Action.Op.decl [symbolic = %assoc0.loc5_22.2 (constants.%assoc0.ba9)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Action.%Action.type (%Action.type.f0c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.e34)]
+// CHECK:STDOUT:     %Self.loc4_28.1: @Action.%Action.type (%Action.type.f0c) = symbolic_binding Self, 1 [symbolic = %Self.loc4_28.2 (constants.%Self.e34)]
 // CHECK:STDOUT:     %Action.Op.decl: @Action.%Action.Op.type (%Action.Op.type.0af) = fn_decl @Action.Op [symbolic = @Action.%Action.Op (constants.%Action.Op.afb)] {
 // CHECK:STDOUT:       %self.patt: @Action.Op.%pattern_type (%pattern_type.29e) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @Action.Op.%pattern_type (%pattern_type.29e) = value_param_pattern %self.patt, call_param0 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %self.param: @Action.Op.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc5_15.1: type = splice_block %.loc5_15.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc5_15.2: @Action.Op.%Action.type (%Action.type.f0c) = specific_constant @Action.%Self.1, @Action(constants.%T) [symbolic = %Self (constants.%Self.e34)]
+// CHECK:STDOUT:         %.loc5_15.2: @Action.Op.%Action.type (%Action.type.f0c) = specific_constant @Action.%Self.loc4_28.1, @Action(constants.%T) [symbolic = %Self (constants.%Self.e34)]
 // CHECK:STDOUT:         %Self.ref: @Action.Op.%Action.type (%Action.type.f0c) = name_ref Self, %.loc5_15.2 [symbolic = %Self (constants.%Self.e34)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc5_15.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -316,7 +316,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:     %assoc0.loc5_22.1: @Action.%Action.assoc_type (%Action.assoc_type.63f) = assoc_entity element0, %Action.Op.decl [symbolic = %assoc0.loc5_22.2 (constants.%assoc0.ba9)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_28.1
 // CHECK:STDOUT:     .Op = %assoc0.loc5_22.1
 // CHECK:STDOUT:     witness = (%Action.Op.decl)
 // CHECK:STDOUT:   }
@@ -361,7 +361,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   .Self = constants.%C
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Action.Op(@Action.%T.loc4_18.2: type, @Action.%Self.1: @Action.%Action.type (%Action.type.f0c)) {
+// CHECK:STDOUT: generic fn @Action.Op(@Action.%T.loc4_18.2: type, @Action.%Self.loc4_28.1: @Action.%Action.type (%Action.type.f0c)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %Action.type: type = facet_type <@Action, @Action(%T)> [symbolic = %Action.type (constants.%Action.type.f0c)]
 // CHECK:STDOUT:   %Self: @Action.Op.%Action.type (%Action.type.f0c) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.e34)]
@@ -407,7 +407,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Action.type => constants.%Action.type.74f
-// CHECK:STDOUT:   %Self.2 => constants.%Self.1b9
+// CHECK:STDOUT:   %Self.loc4_28.2 => constants.%Self.1b9
 // CHECK:STDOUT:   %Action.Op.type => constants.%Action.Op.type.54d
 // CHECK:STDOUT:   %Action.Op => constants.%Action.Op.dba
 // CHECK:STDOUT:   %Action.assoc_type => constants.%Action.assoc_type.4ee
@@ -471,7 +471,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//action, loc9_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.54a = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//action, loc4_18, loaded [symbolic = @Action.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.0fd = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.0fd = import_ref Main//action, loc4_28, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2c8: @Action.%Action.assoc_type (%Action.assoc_type.63f) = import_ref Main//action, loc5_22, loaded [symbolic = @Action.%assoc0 (constants.%assoc0.185053.2)]
 // CHECK:STDOUT:   %Main.Op = import_ref Main//action, Op, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c2f: <witness> = import_ref Main//action, loc12_21, loaded [concrete = constants.%Action.impl_witness]
@@ -481,7 +481,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.99f: type = import_ref Main//action, loc12_19, loaded [concrete = constants.%Action.type.74f]
 // CHECK:STDOUT:   %Main.import_ref.8c4 = import_ref Main//action, loc13_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//action, loc4_18, loaded [symbolic = @Action.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.e3c: @Action.%Action.type (%Action.type.f0c) = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Action.%Self (constants.%Self.e34)]
+// CHECK:STDOUT:   %Main.import_ref.e3c: @Action.%Action.type (%Action.type.f0c) = import_ref Main//action, loc4_28, loaded [symbolic = @Action.%Self (constants.%Self.e34)]
 // CHECK:STDOUT:   %Main.import_ref.35cfc8.1 = import_ref Main//action, loc5_22, unloaded
 // CHECK:STDOUT:   %Main.import_ref.38d: @Action.%Action.Op.type (%Action.Op.type.0af) = import_ref Main//action, loc5_22, loaded [symbolic = @Action.%Action.Op (constants.%Action.Op.afb)]
 // CHECK:STDOUT:   %Main.import_ref.35cfc8.2 = import_ref Main//action, loc5_22, unloaded
@@ -651,7 +651,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//action, loc9_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.54a = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//action, loc4_18, loaded [symbolic = @Action.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.0fd = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.0fd = import_ref Main//action, loc4_28, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2c8: @Action.%Action.assoc_type (%Action.assoc_type.63f) = import_ref Main//action, loc5_22, loaded [symbolic = @Action.%assoc0 (constants.%assoc0.185)]
 // CHECK:STDOUT:   %Main.Op = import_ref Main//action, Op, unloaded
 // CHECK:STDOUT:   %Main.import_ref.7bf = import_ref Main//action, loc12_21, unloaded
@@ -661,7 +661,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.99f: type = import_ref Main//action, loc12_19, loaded [concrete = constants.%Action.type.74f]
 // CHECK:STDOUT:   %Main.import_ref.8c4 = import_ref Main//action, loc13_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//action, loc4_18, loaded [symbolic = @Action.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.e3c: @Action.%Action.type (%Action.type.f0c) = import_ref Main//action, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Action.%Self (constants.%Self.e34)]
+// CHECK:STDOUT:   %Main.import_ref.e3c: @Action.%Action.type (%Action.type.f0c) = import_ref Main//action, loc4_28, loaded [symbolic = @Action.%Self (constants.%Self.e34)]
 // CHECK:STDOUT:   %Main.import_ref.38d: @Action.%Action.Op.type (%Action.Op.type.0af) = import_ref Main//action, loc5_22, loaded [symbolic = @Action.%Action.Op (constants.%Action.Op.afb)]
 // CHECK:STDOUT:   %Main.import_ref.35cfc8.1 = import_ref Main//action, loc5_22, unloaded
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.3: <witness> = import_ref Main//action, loc10_10, loaded [concrete = constants.%complete_type]
@@ -877,7 +877,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Factory.type: type = facet_type <@Factory, @Factory(%T.loc4_19.1)> [symbolic = %Factory.type (constants.%Factory.type.fc2)]
-// CHECK:STDOUT:   %Self.2: @Factory.%Factory.type (%Factory.type.fc2) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.96a)]
+// CHECK:STDOUT:   %Self.loc4_29.2: @Factory.%Factory.type (%Factory.type.fc2) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self.96a)]
 // CHECK:STDOUT:   %Factory.Make.type: type = fn_type @Factory.Make, @Factory(%T.loc4_19.1) [symbolic = %Factory.Make.type (constants.%Factory.Make.type.b89)]
 // CHECK:STDOUT:   %Factory.Make: @Factory.%Factory.Make.type (%Factory.Make.type.b89) = struct_value () [symbolic = %Factory.Make (constants.%Factory.Make.af4)]
 // CHECK:STDOUT:   %Factory.assoc_type: type = assoc_entity_type @Factory, @Factory(%T.loc4_19.1) [symbolic = %Factory.assoc_type (constants.%Factory.assoc_type.f84)]
@@ -887,7 +887,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %assoc1.loc8_31.2: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = assoc_entity element1, %Factory.Method.decl [symbolic = %assoc1.loc8_31.2 (constants.%assoc1.45b)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Factory.%Factory.type (%Factory.type.fc2) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.96a)]
+// CHECK:STDOUT:     %Self.loc4_29.1: @Factory.%Factory.type (%Factory.type.fc2) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self.96a)]
 // CHECK:STDOUT:     %Factory.Make.decl: @Factory.%Factory.Make.type (%Factory.Make.type.b89) = fn_decl @Factory.Make [symbolic = @Factory.%Factory.Make (constants.%Factory.Make.af4)] {
 // CHECK:STDOUT:       %return.patt: @Factory.Make.%pattern_type (%pattern_type.e68) = return_slot_pattern [concrete]
 // CHECK:STDOUT:       %return.param_patt: @Factory.Make.%pattern_type (%pattern_type.e68) = out_param_pattern %return.patt, call_param0 [concrete]
@@ -906,7 +906,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @Factory.%T.loc4_19.2 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:       %self.param: @Factory.Method.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc8_19.1: type = splice_block %.loc8_19.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc8_19.2: @Factory.Method.%Factory.type (%Factory.type.fc2) = specific_constant @Factory.%Self.1, @Factory(constants.%T) [symbolic = %Self (constants.%Self.96a)]
+// CHECK:STDOUT:         %.loc8_19.2: @Factory.Method.%Factory.type (%Factory.type.fc2) = specific_constant @Factory.%Self.loc4_29.1, @Factory(constants.%T) [symbolic = %Self (constants.%Self.96a)]
 // CHECK:STDOUT:         %Self.ref: @Factory.Method.%Factory.type (%Factory.type.fc2) = name_ref Self, %.loc8_19.2 [symbolic = %Self (constants.%Self.96a)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc8_19.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -918,7 +918,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:     %assoc1.loc8_31.1: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = assoc_entity element1, %Factory.Method.decl [symbolic = %assoc1.loc8_31.2 (constants.%assoc1.45b)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_29.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .Make = %assoc0.loc6_17.1
 // CHECK:STDOUT:     .Method = %assoc1.loc8_31.1
@@ -972,14 +972,14 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   .Self = constants.%B
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Factory.Make(@Factory.%T.loc4_19.2: type, @Factory.%Self.1: @Factory.%Factory.type (%Factory.type.fc2)) {
+// CHECK:STDOUT: generic fn @Factory.Make(@Factory.%T.loc4_19.2: type, @Factory.%Self.loc4_29.1: @Factory.%Factory.type (%Factory.type.fc2)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %pattern_type: type = pattern_type %T [symbolic = %pattern_type (constants.%pattern_type.e68)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   fn() -> @Factory.Make.%T (%T);
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Factory.Method(@Factory.%T.loc4_19.2: type, @Factory.%Self.1: @Factory.%Factory.type (%Factory.type.fc2)) {
+// CHECK:STDOUT: generic fn @Factory.Method(@Factory.%T.loc4_19.2: type, @Factory.%Self.loc4_29.1: @Factory.%Factory.type (%Factory.type.fc2)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %Factory.type: type = facet_type <@Factory, @Factory(%T)> [symbolic = %Factory.type (constants.%Factory.type.fc2)]
 // CHECK:STDOUT:   %Self: @Factory.Method.%Factory.type (%Factory.type.fc2) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.96a)]
@@ -1017,7 +1017,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Factory.type => constants.%Factory.type.3cb
-// CHECK:STDOUT:   %Self.2 => constants.%Self.197
+// CHECK:STDOUT:   %Self.loc4_29.2 => constants.%Self.197
 // CHECK:STDOUT:   %Factory.Make.type => constants.%Factory.Make.type.c59
 // CHECK:STDOUT:   %Factory.Make => constants.%Factory.Make.efe
 // CHECK:STDOUT:   %Factory.assoc_type => constants.%Factory.assoc_type.579
@@ -1101,7 +1101,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//factory, loc12_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.54a = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.1b4 = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.1b4 = import_ref Main//factory, loc4_29, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2a0: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = import_ref Main//factory, loc6_17, loaded [symbolic = @Factory.%assoc0 (constants.%assoc0.a6dba1.2)]
 // CHECK:STDOUT:   %Main.import_ref.da9: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = import_ref Main//factory, loc8_31, loaded [symbolic = @Factory.%assoc1 (constants.%assoc1.ed9a05.2)]
 // CHECK:STDOUT:   %Main.Make = import_ref Main//factory, Make, unloaded
@@ -1114,10 +1114,10 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.22f = import_ref Main//factory, loc15_17, unloaded
 // CHECK:STDOUT:   %Main.import_ref.5a9 = import_ref Main//factory, loc16_31, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.85fa76.1: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
+// CHECK:STDOUT:   %Main.import_ref.85fa76.1: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, loc4_29, loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
 // CHECK:STDOUT:   %Main.import_ref.b0ae2d.1 = import_ref Main//factory, loc6_17, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.3: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.85fa76.2: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
+// CHECK:STDOUT:   %Main.import_ref.85fa76.2: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, loc4_29, loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
 // CHECK:STDOUT:   %Main.import_ref.b6f0d8.1 = import_ref Main//factory, loc8_31, unloaded
 // CHECK:STDOUT:   %Main.import_ref.b49: @Factory.%Factory.Make.type (%Factory.Make.type.b89) = import_ref Main//factory, loc6_17, loaded [symbolic = @Factory.%Factory.Make (constants.%Factory.Make.af4)]
 // CHECK:STDOUT:   %Main.import_ref.a6b: @Factory.%Factory.Method.type (%Factory.Method.type.159) = import_ref Main//factory, loc8_31, loaded [symbolic = @Factory.%Factory.Method (constants.%Factory.Method.8f7)]
@@ -1356,7 +1356,7 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//factory, loc12_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.54a = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.1b4 = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.1b4 = import_ref Main//factory, loc4_29, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2a0: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = import_ref Main//factory, loc6_17, loaded [symbolic = @Factory.%assoc0 (constants.%assoc0.a6d)]
 // CHECK:STDOUT:   %Main.import_ref.da9: @Factory.%Factory.assoc_type (%Factory.assoc_type.f84) = import_ref Main//factory, loc8_31, loaded [symbolic = @Factory.%assoc1 (constants.%assoc1.ed9)]
 // CHECK:STDOUT:   %Main.Make = import_ref Main//factory, Make, unloaded
@@ -1369,10 +1369,10 @@ fn InstanceC(a: A) -> C {
 // CHECK:STDOUT:   %Main.import_ref.22f = import_ref Main//factory, loc15_17, unloaded
 // CHECK:STDOUT:   %Main.import_ref.5a9 = import_ref Main//factory, loc16_31, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.85fa76.1: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
+// CHECK:STDOUT:   %Main.import_ref.85fa76.1: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, loc4_29, loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
 // CHECK:STDOUT:   %Main.import_ref.b49: @Factory.%Factory.Make.type (%Factory.Make.type.b89) = import_ref Main//factory, loc6_17, loaded [symbolic = @Factory.%Factory.Make (constants.%Factory.Make.af4)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.3: type = import_ref Main//factory, loc4_19, loaded [symbolic = @Factory.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.85fa76.2: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
+// CHECK:STDOUT:   %Main.import_ref.85fa76.2: @Factory.%Factory.type (%Factory.type.fc2) = import_ref Main//factory, loc4_29, loaded [symbolic = @Factory.%Self (constants.%Self.96a)]
 // CHECK:STDOUT:   %Main.import_ref.a6b: @Factory.%Factory.Method.type (%Factory.Method.type.159) = import_ref Main//factory, loc8_31, loaded [symbolic = @Factory.%Factory.Method (constants.%Factory.Method.8f7)]
 // CHECK:STDOUT:   %Main.import_ref.b0ae2d.1 = import_ref Main//factory, loc6_17, unloaded
 // CHECK:STDOUT:   %Main.import_ref.b6f0d8.1 = import_ref Main//factory, loc8_31, unloaded

toolchain/check/testdata/impl/lookup/generic.carbon

@@ -920,21 +920,21 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type: type = facet_type <@HasF, @HasF(%T.loc4_16.1)> [symbolic = %HasF.type (constants.%HasF.type.59b)]
-// CHECK:STDOUT:   %Self.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:   %Self.loc4_26.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:   %HasF.F.type: type = fn_type @HasF.F, @HasF(%T.loc4_16.1) [symbolic = %HasF.F.type (constants.%HasF.F.type.940)]
 // CHECK:STDOUT:   %HasF.F: @HasF.%HasF.F.type (%HasF.F.type.940) = struct_value () [symbolic = %HasF.F (constants.%HasF.F.86b)]
 // CHECK:STDOUT:   %HasF.assoc_type: type = assoc_entity_type @HasF, @HasF(%T.loc4_16.1) [symbolic = %HasF.assoc_type (constants.%HasF.assoc_type.1aa)]
 // CHECK:STDOUT:   %assoc0.loc5_21.2: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_21.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:     %Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:     %HasF.F.decl: @HasF.%HasF.F.type (%HasF.F.type.940) = fn_decl @HasF.F [symbolic = @HasF.%HasF.F (constants.%HasF.F.86b)] {
 // CHECK:STDOUT:       %self.patt: @HasF.F.%pattern_type (%pattern_type.429) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @HasF.F.%pattern_type (%pattern_type.429) = value_param_pattern %self.patt, call_param0 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %self.param: @HasF.F.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc5_14.1: type = splice_block %.loc5_14.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc5_14.2: @HasF.F.%HasF.type (%HasF.type.59b) = specific_constant @HasF.%Self.1, @HasF(constants.%T) [symbolic = %Self (constants.%Self.69f)]
+// CHECK:STDOUT:         %.loc5_14.2: @HasF.F.%HasF.type (%HasF.type.59b) = specific_constant @HasF.%Self.loc4_26.1, @HasF(constants.%T) [symbolic = %Self (constants.%Self.69f)]
 // CHECK:STDOUT:         %Self.ref: @HasF.F.%HasF.type (%HasF.type.59b) = name_ref Self, %.loc5_14.2 [symbolic = %Self (constants.%Self.69f)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc5_14.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -944,7 +944,7 @@ fn G(x: A) {
 // CHECK:STDOUT:     %assoc0.loc5_21.1: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_21.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_26.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_21.1
 // CHECK:STDOUT:     witness = (%HasF.F.decl)
 // CHECK:STDOUT:   }
@@ -976,7 +976,7 @@ fn G(x: A) {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.1: @HasF.%HasF.type (%HasF.type.59b)) {
+// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %HasF.type: type = facet_type <@HasF, @HasF(%T)> [symbolic = %HasF.type (constants.%HasF.type.59b)]
 // CHECK:STDOUT:   %Self: @HasF.F.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.69f)]
@@ -1017,7 +1017,7 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type => constants.%HasF.type.59b
-// CHECK:STDOUT:   %Self.2 => constants.%Self.69f
+// CHECK:STDOUT:   %Self.loc4_26.2 => constants.%Self.69f
 // CHECK:STDOUT:   %HasF.F.type => constants.%HasF.F.type.940
 // CHECK:STDOUT:   %HasF.F => constants.%HasF.F.86b
 // CHECK:STDOUT:   %HasF.assoc_type => constants.%HasF.assoc_type.1aa
@@ -1058,7 +1058,7 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type => constants.%HasF.type.48b
-// CHECK:STDOUT:   %Self.2 => constants.%Self.82e
+// CHECK:STDOUT:   %Self.loc4_26.2 => constants.%Self.82e
 // CHECK:STDOUT:   %HasF.F.type => constants.%HasF.F.type.b0b
 // CHECK:STDOUT:   %HasF.F => constants.%HasF.F.418
 // CHECK:STDOUT:   %HasF.assoc_type => constants.%HasF.assoc_type.9e4
@@ -1335,21 +1335,21 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type: type = facet_type <@HasF, @HasF(%T.loc4_16.1)> [symbolic = %HasF.type (constants.%HasF.type.59b)]
-// CHECK:STDOUT:   %Self.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:   %Self.loc4_26.2: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:   %HasF.F.type: type = fn_type @HasF.F, @HasF(%T.loc4_16.1) [symbolic = %HasF.F.type (constants.%HasF.F.type.940)]
 // CHECK:STDOUT:   %HasF.F: @HasF.%HasF.F.type (%HasF.F.type.940) = struct_value () [symbolic = %HasF.F (constants.%HasF.F.86b)]
 // CHECK:STDOUT:   %HasF.assoc_type: type = assoc_entity_type @HasF, @HasF(%T.loc4_16.1) [symbolic = %HasF.assoc_type (constants.%HasF.assoc_type.1aa)]
 // CHECK:STDOUT:   %assoc0.loc5_21.2: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_21.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.69f)]
+// CHECK:STDOUT:     %Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_26.2 (constants.%Self.69f)]
 // CHECK:STDOUT:     %HasF.F.decl: @HasF.%HasF.F.type (%HasF.F.type.940) = fn_decl @HasF.F [symbolic = @HasF.%HasF.F (constants.%HasF.F.86b)] {
 // CHECK:STDOUT:       %self.patt: @HasF.F.%pattern_type (%pattern_type.429) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @HasF.F.%pattern_type (%pattern_type.429) = value_param_pattern %self.patt, call_param0 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %self.param: @HasF.F.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc5_14.1: type = splice_block %.loc5_14.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc5_14.2: @HasF.F.%HasF.type (%HasF.type.59b) = specific_constant @HasF.%Self.1, @HasF(constants.%T) [symbolic = %Self (constants.%Self.69f)]
+// CHECK:STDOUT:         %.loc5_14.2: @HasF.F.%HasF.type (%HasF.type.59b) = specific_constant @HasF.%Self.loc4_26.1, @HasF(constants.%T) [symbolic = %Self (constants.%Self.69f)]
 // CHECK:STDOUT:         %Self.ref: @HasF.F.%HasF.type (%HasF.type.59b) = name_ref Self, %.loc5_14.2 [symbolic = %Self (constants.%Self.69f)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc5_14.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -1359,7 +1359,7 @@ fn G(x: A) {
 // CHECK:STDOUT:     %assoc0.loc5_21.1: @HasF.%HasF.assoc_type (%HasF.assoc_type.1aa) = assoc_entity element0, %HasF.F.decl [symbolic = %assoc0.loc5_21.2 (constants.%assoc0.bd3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_26.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_21.1
 // CHECK:STDOUT:     witness = (%HasF.F.decl)
 // CHECK:STDOUT:   }
@@ -1407,7 +1407,7 @@ fn G(x: A) {
 // CHECK:STDOUT:   .Self = constants.%B
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.1: @HasF.%HasF.type (%HasF.type.59b)) {
+// CHECK:STDOUT: generic fn @HasF.F(@HasF.%T.loc4_16.2: type, @HasF.%Self.loc4_26.1: @HasF.%HasF.type (%HasF.type.59b)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %HasF.type: type = facet_type <@HasF, @HasF(%T)> [symbolic = %HasF.type (constants.%HasF.type.59b)]
 // CHECK:STDOUT:   %Self: @HasF.F.%HasF.type (%HasF.type.59b) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self.69f)]
@@ -1446,7 +1446,7 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type => constants.%HasF.type.59b
-// CHECK:STDOUT:   %Self.2 => constants.%Self.69f
+// CHECK:STDOUT:   %Self.loc4_26.2 => constants.%Self.69f
 // CHECK:STDOUT:   %HasF.F.type => constants.%HasF.F.type.940
 // CHECK:STDOUT:   %HasF.F => constants.%HasF.F.86b
 // CHECK:STDOUT:   %HasF.assoc_type => constants.%HasF.assoc_type.1aa
@@ -1490,7 +1490,7 @@ fn G(x: A) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %HasF.type => constants.%HasF.type.296
-// CHECK:STDOUT:   %Self.2 => constants.%Self.3f1
+// CHECK:STDOUT:   %Self.loc4_26.2 => constants.%Self.3f1
 // CHECK:STDOUT:   %HasF.F.type => constants.%HasF.F.type.1c6
 // CHECK:STDOUT:   %HasF.F => constants.%HasF.F.7cf
 // CHECK:STDOUT:   %HasF.assoc_type => constants.%HasF.assoc_type.1af

toolchain/check/testdata/impl/lookup/import.carbon

@@ -389,10 +389,10 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageA.import_ref.8f2: <witness> = import_ref PackageA//default, loc8_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageA.import_ref.2c4 = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageA.HasF: type = import_ref PackageA//default, HasF, loaded [concrete = constants.%HasF.type]
-// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, loc4_16, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.c63 = import_ref PackageA//default, loc5_21, unloaded
 // CHECK:STDOUT:   %PackageA.F: %HasF.F.type = import_ref PackageA//default, F, loaded [concrete = constants.%HasF.F]
-// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9ba]
+// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, loc4_16, loaded [symbolic = constants.%Self.9ba]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -617,11 +617,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageA.import_ref.8f2: <witness> = import_ref PackageA//default, loc8_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageA.import_ref.2c4 = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageA.HasF: type = import_ref PackageA//default, HasF, loaded [concrete = constants.%HasF.type]
-// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, loc4_16, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.b36: %HasF.assoc_type = import_ref PackageA//default, loc5_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %PackageA.F = import_ref PackageA//default, F, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.ab2: %HasF.F.type = import_ref PackageA//default, loc5_21, loaded [concrete = constants.%HasF.F]
-// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, loc4_16, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %PackageA.import_ref.a12: <witness> = import_ref PackageA//default, loc11_16, loaded [concrete = constants.%HasF.impl_witness]
 // CHECK:STDOUT:   %PackageA.import_ref.29a: type = import_ref PackageA//default, loc11_6, loaded [concrete = constants.%C]
 // CHECK:STDOUT:   %PackageA.import_ref.e8c: type = import_ref PackageA//default, loc11_11, loaded [concrete = constants.%HasF.type]
@@ -740,11 +740,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageB.import_ref.8f2: <witness> = import_ref PackageB//default, loc10_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageB.import_ref.cab = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageA.HasF: type = import_ref PackageA//default, HasF, loaded [concrete = constants.%HasF.type]
-// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageA.import_ref.2fb = import_ref PackageA//default, loc4_16, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.b36: %HasF.assoc_type = import_ref PackageA//default, loc5_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %PackageA.F = import_ref PackageA//default, F, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.ab2: %HasF.F.type = import_ref PackageA//default, loc5_21, loaded [concrete = constants.%HasF.F]
-// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %PackageA.import_ref.512: %HasF.type = import_ref PackageA//default, loc4_16, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %PackageA.import_ref.54d = import_ref PackageA//default, loc11_16, unloaded
 // CHECK:STDOUT:   %PackageA.import_ref.8f2: <witness> = import_ref PackageA//default, loc8_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageA.import_ref.2c4 = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
@@ -882,11 +882,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageA.import_ref.8f2: <witness> = import_ref PackageA//default, loc8_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageA.import_ref.2c4 = import_ref PackageA//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageB.HasG: type = import_ref PackageB//default, HasG, loaded [concrete = constants.%HasG.type]
-// CHECK:STDOUT:   %PackageB.import_ref.103 = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageB.import_ref.103 = import_ref PackageB//default, loc6_16, unloaded
 // CHECK:STDOUT:   %PackageB.import_ref.6c2: %HasG.assoc_type = import_ref PackageB//default, loc7_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %PackageB.G = import_ref PackageB//default, G, unloaded
 // CHECK:STDOUT:   %PackageB.import_ref.70a: %HasG.G.type = import_ref PackageB//default, loc7_21, loaded [concrete = constants.%HasG.G]
-// CHECK:STDOUT:   %PackageB.import_ref.175: %HasG.type = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %PackageB.import_ref.175: %HasG.type = import_ref PackageB//default, loc6_16, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %PackageB.import_ref.f06: <witness> = import_ref PackageB//default, loc13_25, loaded [concrete = constants.%HasG.impl_witness]
 // CHECK:STDOUT:   %PackageB.import_ref.dfb: type = import_ref PackageB//default, loc13_14, loaded [concrete = constants.%C]
 // CHECK:STDOUT:   %PackageB.import_ref.cee586.1: type = import_ref PackageB//default, loc13_20, loaded [concrete = constants.%HasG.type]
@@ -1021,11 +1021,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageB.import_ref.8f2: <witness> = import_ref PackageB//default, loc10_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageB.import_ref.cab = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageB.HasG: type = import_ref PackageB//default, HasG, loaded [concrete = constants.%HasG.type]
-// CHECK:STDOUT:   %PackageB.import_ref.103 = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageB.import_ref.103 = import_ref PackageB//default, loc6_16, unloaded
 // CHECK:STDOUT:   %PackageB.import_ref.6c2: %HasG.assoc_type = import_ref PackageB//default, loc7_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %PackageB.G = import_ref PackageB//default, G, unloaded
 // CHECK:STDOUT:   %PackageB.import_ref.70a: %HasG.G.type = import_ref PackageB//default, loc7_21, loaded [concrete = constants.%HasG.G]
-// CHECK:STDOUT:   %PackageB.import_ref.175: %HasG.type = import_ref PackageB//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %PackageB.import_ref.175: %HasG.type = import_ref PackageB//default, loc6_16, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %PackageB.import_ref.f94 = import_ref PackageB//default, loc13_25, unloaded
 // CHECK:STDOUT:   %PackageB.import_ref.8db: <witness> = import_ref PackageB//default, inst{{[0-9A-F]+}} [indirect], loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %PackageB.import_ref.6a9 = import_ref PackageB//default, inst{{[0-9A-F]+}} [indirect], unloaded
@@ -1254,11 +1254,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:     import PackageAssociatedInterface//default
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %PackageAssociatedInterface.Z: type = import_ref PackageAssociatedInterface//default, Z, loaded [concrete = constants.%Z.type]
-// CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.462 = import_ref PackageAssociatedInterface//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.462 = import_ref PackageAssociatedInterface//default, loc4_13, unloaded
 // CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.609: %Z.assoc_type = import_ref PackageAssociatedInterface//default, loc5_21, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %PackageAssociatedInterface.H = import_ref PackageAssociatedInterface//default, H, unloaded
 // CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.250: %Z.H.type = import_ref PackageAssociatedInterface//default, loc5_21, loaded [concrete = constants.%Z.H]
-// CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.837: %Z.type = import_ref PackageAssociatedInterface//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.837: %Z.type = import_ref PackageAssociatedInterface//default, loc4_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.915: <witness> = import_ref PackageAssociatedInterface//default, loc8_14, loaded [concrete = constants.%Z.impl_witness]
 // CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.e5c: type = import_ref PackageAssociatedInterface//default, loc8_7, loaded [concrete = constants.%empty_tuple.type]
 // CHECK:STDOUT:   %PackageAssociatedInterface.import_ref.df1: type = import_ref PackageAssociatedInterface//default, loc8_12, loaded [concrete = constants.%Z.type]
@@ -1502,10 +1502,10 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageHasParam.import_ref.8f2: <witness> = import_ref PackageHasParam//default, loc4_34, loaded [concrete = constants.%complete_type.357]
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f6b = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageHasParam.Y: type = import_ref PackageHasParam//default, Y, loaded [concrete = constants.%Y.type]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, loc6_13, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f69: %Y.assoc_type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%assoc0.494]
 // CHECK:STDOUT:   %PackageHasParam.K: %Y.K.type = import_ref PackageHasParam//default, K, loaded [concrete = constants.%Y.K]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.ad2]
+// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, loc6_13, loaded [symbolic = constants.%Self.ad2]
 // CHECK:STDOUT:   %PackageHasParam.import_ref.ce2: %Y.K.type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%Y.K]
 // CHECK:STDOUT:   %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
 // CHECK:STDOUT: }
@@ -1543,13 +1543,13 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %GenericInterface.type: type = facet_type <@GenericInterface, @GenericInterface(%U.loc6_28.1)> [symbolic = %GenericInterface.type (constants.%GenericInterface.type.114)]
-// CHECK:STDOUT:   %Self.2: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1f6)]
+// CHECK:STDOUT:   %Self.loc6_38.2: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.loc6_38.2 (constants.%Self.1f6)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1f6)]
+// CHECK:STDOUT:     %Self.loc6_38.1: @GenericInterface.%GenericInterface.type (%GenericInterface.type.114) = symbolic_binding Self, 1 [symbolic = %Self.loc6_38.2 (constants.%Self.1f6)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc6_38.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -1738,13 +1738,13 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f6b = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageGenericInterface.GenericInterface: %GenericInterface.type.0da = import_ref PackageGenericInterface//default, GenericInterface, loaded [concrete = constants.%GenericInterface.generic]
 // CHECK:STDOUT:   %PackageGenericInterface.import_ref.efc: type = import_ref PackageGenericInterface//default, loc6_28, loaded [symbolic = @GenericInterface.%U (constants.%U)]
-// CHECK:STDOUT:   %PackageGenericInterface.import_ref.4d7 = import_ref PackageGenericInterface//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageGenericInterface.import_ref.4d7 = import_ref PackageGenericInterface//default, loc6_38, unloaded
 // CHECK:STDOUT:   %PackageHasParam.Y: type = import_ref PackageHasParam//default, Y, loaded [concrete = constants.%Y.type]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, loc6_13, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f69: %Y.assoc_type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%assoc0.494]
 // CHECK:STDOUT:   %PackageHasParam.K = import_ref PackageHasParam//default, K, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.ce2: %Y.K.type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%Y.K]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.ad2]
+// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, loc6_13, loaded [symbolic = constants.%Self.ad2]
 // CHECK:STDOUT:   %PackageGenericInterface.import_ref.ba6: <witness> = import_ref PackageGenericInterface//default, loc8_70, loaded [concrete = constants.%Y.impl_witness]
 // CHECK:STDOUT:   %PackageGenericInterface.import_ref.321: type = import_ref PackageGenericInterface//default, loc8_47, loaded [concrete = constants.%AnyParam.861]
 // CHECK:STDOUT:   %PackageGenericInterface.import_ref.ca6: type = import_ref PackageGenericInterface//default, loc8_67, loaded [concrete = constants.%Y.type]
@@ -1943,10 +1943,10 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageHasParam.import_ref.8f2: <witness> = import_ref PackageHasParam//default, loc4_34, loaded [concrete = constants.%complete_type.357]
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f6b = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageHasParam.Y: type = import_ref PackageHasParam//default, Y, loaded [concrete = constants.%Y.type]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, loc6_13, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f69: %Y.assoc_type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%assoc0.494]
 // CHECK:STDOUT:   %PackageHasParam.K: %Y.K.type = import_ref PackageHasParam//default, K, loaded [concrete = constants.%Y.K]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.ad2]
+// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, loc6_13, loaded [symbolic = constants.%Self.ad2]
 // CHECK:STDOUT:   %PackageHasParam.import_ref.ce2: %Y.K.type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%Y.K]
 // CHECK:STDOUT:   %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
 // CHECK:STDOUT: }
@@ -2178,11 +2178,11 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %PackageGenericClass.import_ref.8f2: <witness> = import_ref PackageGenericClass//default, loc6_31, loaded [concrete = constants.%complete_type.357]
 // CHECK:STDOUT:   %PackageGenericClass.import_ref.ec6 = import_ref PackageGenericClass//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %PackageHasParam.Y: type = import_ref PackageHasParam//default, Y, loaded [concrete = constants.%Y.type]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %PackageHasParam.import_ref.581 = import_ref PackageHasParam//default, loc6_13, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.f69: %Y.assoc_type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%assoc0.494]
 // CHECK:STDOUT:   %PackageHasParam.K = import_ref PackageHasParam//default, K, unloaded
 // CHECK:STDOUT:   %PackageHasParam.import_ref.ce2: %Y.K.type = import_ref PackageHasParam//default, loc7_22, loaded [concrete = constants.%Y.K]
-// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.ad2]
+// CHECK:STDOUT:   %PackageHasParam.import_ref.3d5: %Y.type = import_ref PackageHasParam//default, loc6_13, loaded [symbolic = constants.%Self.ad2]
 // CHECK:STDOUT:   %PackageGenericClass.import_ref.812: <witness> = import_ref PackageGenericClass//default, loc8_66, loaded [concrete = constants.%Y.impl_witness]
 // CHECK:STDOUT:   %PackageGenericClass.import_ref.a0e: type = import_ref PackageGenericClass//default, loc8_43, loaded [concrete = constants.%AnyParam.d71]
 // CHECK:STDOUT:   %PackageGenericClass.import_ref.ca6: type = import_ref PackageGenericClass//default, loc8_63, loaded [concrete = constants.%Y.type]
@@ -2615,20 +2615,20 @@ fn Test(c: HasExtraInterfaces.C(type)) {
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.8f2: <witness> = import_ref HasExtraInterfaces//default, loc13_20, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.034 = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %HasExtraInterfaces.I: type = import_ref HasExtraInterfaces//default, I, loaded [concrete = constants.%I.type]
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.8df = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.8df = import_ref HasExtraInterfaces//default, loc14_13, unloaded
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.be9: %I.assoc_type = import_ref HasExtraInterfaces//default, loc14_33, loaded [concrete = constants.%assoc0]
 // CHECK:STDOUT:   %HasExtraInterfaces.F = import_ref HasExtraInterfaces//default, F, unloaded
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.d54: %I.F.type = import_ref HasExtraInterfaces//default, loc14_33, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.909: %I.type = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.e04]
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.909: %I.type = import_ref HasExtraInterfaces//default, loc14_13, loaded [symbolic = constants.%Self.e04]
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.80c = import_ref HasExtraInterfaces//default, loc16_79, unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.c8c = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.591 = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.16e = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.e5e = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.178 = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.e5d = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.7fd = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.642 = import_ref HasExtraInterfaces//default, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.c8c = import_ref HasExtraInterfaces//default, loc11_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.591 = import_ref HasExtraInterfaces//default, loc10_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.16e = import_ref HasExtraInterfaces//default, loc9_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.e5e = import_ref HasExtraInterfaces//default, loc8_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.178 = import_ref HasExtraInterfaces//default, loc7_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.e5d = import_ref HasExtraInterfaces//default, loc6_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.7fd = import_ref HasExtraInterfaces//default, loc5_18, unloaded
+// CHECK:STDOUT:   %HasExtraInterfaces.import_ref.642 = import_ref HasExtraInterfaces//default, loc4_18, unloaded
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.ef7: type = import_ref HasExtraInterfaces//default, loc16_72, loaded [concrete = constants.%C.c07]
 // CHECK:STDOUT:   %HasExtraInterfaces.import_ref.301: type = import_ref HasExtraInterfaces//default, loc16_77, loaded [concrete = constants.%I.type]
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/lookup/lookup_interface_with_enclosing_generic_inside_rewrite_constraint.carbon

@@ -203,24 +203,24 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam: type = symbolic_binding OuterParam, 0 [symbolic = %OuterParam (constants.%OuterParam)]
 // CHECK:STDOUT:   %Y.type: type = facet_type <@Y, @Y(%OuterParam)> [symbolic = %Y.type (constants.%Y.type.c70)]
-// CHECK:STDOUT:   %Self.2: @Y.%Y.type (%Y.type.c70) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.2a9)]
+// CHECK:STDOUT:   %Self.loc50_15.2: @Y.%Y.type (%Y.type.c70) = symbolic_binding Self, 1 [symbolic = %Self.loc50_15.2 (constants.%Self.2a9)]
 // CHECK:STDOUT:   %Y.assoc_type: type = assoc_entity_type @Y, @Y(%OuterParam) [symbolic = %Y.assoc_type (constants.%Y.assoc_type.f4b)]
 // CHECK:STDOUT:   %assoc0: @Y.%Y.assoc_type (%Y.assoc_type.f4b) = assoc_entity element0, %T [symbolic = %assoc0 (constants.%assoc0.97a)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Y.%Y.type (%Y.type.c70) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.2a9)]
+// CHECK:STDOUT:     %Self.loc50_15.1: @Y.%Y.type (%Y.type.c70) = symbolic_binding Self, 1 [symbolic = %Self.loc50_15.2 (constants.%Self.2a9)]
 // CHECK:STDOUT:     %T: type = assoc_const_decl @T [concrete] {
 // CHECK:STDOUT:       %assoc0: @Y.%Y.assoc_type (%Y.assoc_type.f4b) = assoc_entity element0, @Y.%T [symbolic = @Y.%assoc0 (constants.%assoc0.97a)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc50_15.1
 // CHECK:STDOUT:     .T = @T.%assoc0
 // CHECK:STDOUT:     witness = (%T)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @T(@Outer.%OuterParam.loc49_13.2: type, @Y.%Self.1: @Y.%Y.type (%Y.type.c70)) {
+// CHECK:STDOUT: generic assoc_const @T(@Outer.%OuterParam.loc49_13.2: type, @Y.%Self.loc50_15.1: @Y.%Y.type (%Y.type.c70)) {
 // CHECK:STDOUT:   assoc_const T:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -325,7 +325,7 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam => constants.%OuterParam
 // CHECK:STDOUT:   %Y.type => constants.%Y.type.c70
-// CHECK:STDOUT:   %Self.2 => constants.%Self.2a9
+// CHECK:STDOUT:   %Self.loc50_15.2 => constants.%Self.2a9
 // CHECK:STDOUT:   %Y.assoc_type => constants.%Y.assoc_type.f4b
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.97a
 // CHECK:STDOUT: }
@@ -362,7 +362,7 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam => constants.%empty_tuple.type
 // CHECK:STDOUT:   %Y.type => constants.%Y.type.c91
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d55
+// CHECK:STDOUT:   %Self.loc50_15.2 => constants.%Self.d55
 // CHECK:STDOUT:   %Y.assoc_type => constants.%Y.assoc_type.06e
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.0a6
 // CHECK:STDOUT: }
@@ -526,24 +526,24 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam: %Z1.type = symbolic_binding OuterParam, 0 [symbolic = %OuterParam (constants.%OuterParam)]
 // CHECK:STDOUT:   %Y.type: type = facet_type <@Y, @Y(%OuterParam)> [symbolic = %Y.type (constants.%Y.type.bfe)]
-// CHECK:STDOUT:   %Self.2: @Y.%Y.type (%Y.type.bfe) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.6b9)]
+// CHECK:STDOUT:   %Self.loc7_15.2: @Y.%Y.type (%Y.type.bfe) = symbolic_binding Self, 1 [symbolic = %Self.loc7_15.2 (constants.%Self.6b9)]
 // CHECK:STDOUT:   %Y.assoc_type: type = assoc_entity_type @Y, @Y(%OuterParam) [symbolic = %Y.assoc_type (constants.%Y.assoc_type.476)]
 // CHECK:STDOUT:   %assoc0: @Y.%Y.assoc_type (%Y.assoc_type.476) = assoc_entity element0, %T [symbolic = %assoc0 (constants.%assoc0.1b6)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Y.%Y.type (%Y.type.bfe) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.6b9)]
+// CHECK:STDOUT:     %Self.loc7_15.1: @Y.%Y.type (%Y.type.bfe) = symbolic_binding Self, 1 [symbolic = %Self.loc7_15.2 (constants.%Self.6b9)]
 // CHECK:STDOUT:     %T: type = assoc_const_decl @T [concrete] {
 // CHECK:STDOUT:       %assoc0: @Y.%Y.assoc_type (%Y.assoc_type.476) = assoc_entity element0, @Y.%T [symbolic = @Y.%assoc0 (constants.%assoc0.1b6)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc7_15.1
 // CHECK:STDOUT:     .T = @T.%assoc0
 // CHECK:STDOUT:     witness = (%T)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @T(@Outer.%OuterParam.loc6_13.2: %Z1.type, @Y.%Self.1: @Y.%Y.type (%Y.type.bfe)) {
+// CHECK:STDOUT: generic assoc_const @T(@Outer.%OuterParam.loc6_13.2: %Z1.type, @Y.%Self.loc7_15.1: @Y.%Y.type (%Y.type.bfe)) {
 // CHECK:STDOUT:   assoc_const T:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -731,7 +731,7 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam => constants.%OuterParam
 // CHECK:STDOUT:   %Y.type => constants.%Y.type.bfe
-// CHECK:STDOUT:   %Self.2 => constants.%Self.6b9
+// CHECK:STDOUT:   %Self.loc7_15.2 => constants.%Self.6b9
 // CHECK:STDOUT:   %Y.assoc_type => constants.%Y.assoc_type.476
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.1b6
 // CHECK:STDOUT: }
@@ -787,7 +787,7 @@ fn F() {
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %OuterParam => constants.%Z1.facet
 // CHECK:STDOUT:   %Y.type => constants.%Y.type.048
-// CHECK:STDOUT:   %Self.2 => constants.%Self.ece
+// CHECK:STDOUT:   %Self.loc7_15.2 => constants.%Self.ece
 // CHECK:STDOUT:   %Y.assoc_type => constants.%Y.assoc_type.38c
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.84b
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/lookup/specialization_with_symbolic_rewrite.carbon

@@ -250,24 +250,24 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type: type = facet_type <@Z, @Z(%T.loc3_13.1)> [symbolic = %Z.type (constants.%Z.type.4d7)]
-// CHECK:STDOUT:   %Self.2: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c41)]
+// CHECK:STDOUT:   %Self.loc3_23.2: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.c41)]
 // CHECK:STDOUT:   %Z.assoc_type: type = assoc_entity_type @Z, @Z(%T.loc3_13.1) [symbolic = %Z.assoc_type (constants.%Z.assoc_type.815)]
 // CHECK:STDOUT:   %assoc0: @Z.%Z.assoc_type (%Z.assoc_type.815) = assoc_entity element0, %X [symbolic = %assoc0 (constants.%assoc0.6bf)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c41)]
+// CHECK:STDOUT:     %Self.loc3_23.1: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.c41)]
 // CHECK:STDOUT:     %X: type = assoc_const_decl @X [concrete] {
 // CHECK:STDOUT:       %assoc0: @Z.%Z.assoc_type (%Z.assoc_type.815) = assoc_entity element0, @Z.%X [symbolic = @Z.%assoc0 (constants.%assoc0.6bf)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_23.1
 // CHECK:STDOUT:     .X = @X.%assoc0
 // CHECK:STDOUT:     witness = (%X)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @X(@Z.%T.loc3_13.2: type, @Z.%Self.1: @Z.%Z.type (%Z.type.4d7)) {
+// CHECK:STDOUT: generic assoc_const @X(@Z.%T.loc3_13.2: type, @Z.%Self.loc3_23.1: @Z.%Z.type (%Z.type.4d7)) {
 // CHECK:STDOUT:   assoc_const X:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -355,7 +355,7 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type => constants.%Z.type.c56
-// CHECK:STDOUT:   %Self.2 => constants.%Self.af2
+// CHECK:STDOUT:   %Self.loc3_23.2 => constants.%Self.af2
 // CHECK:STDOUT:   %Z.assoc_type => constants.%Z.assoc_type.fae
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.175
 // CHECK:STDOUT: }
@@ -383,7 +383,7 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type => constants.%Z.type.a71
-// CHECK:STDOUT:   %Self.2 => constants.%Self.6ec
+// CHECK:STDOUT:   %Self.loc3_23.2 => constants.%Self.6ec
 // CHECK:STDOUT:   %Z.assoc_type => constants.%Z.assoc_type.252
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.ea4
 // CHECK:STDOUT: }
@@ -591,18 +591,18 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type: type = facet_type <@Z, @Z(%T.loc3_13.1)> [symbolic = %Z.type (constants.%Z.type.4d7)]
-// CHECK:STDOUT:   %Self.2: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c41)]
+// CHECK:STDOUT:   %Self.loc3_23.2: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.c41)]
 // CHECK:STDOUT:   %Z.assoc_type: type = assoc_entity_type @Z, @Z(%T.loc3_13.1) [symbolic = %Z.assoc_type (constants.%Z.assoc_type.815)]
 // CHECK:STDOUT:   %assoc0: @Z.%Z.assoc_type (%Z.assoc_type.815) = assoc_entity element0, %X [symbolic = %assoc0 (constants.%assoc0.6bf)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c41)]
+// CHECK:STDOUT:     %Self.loc3_23.1: @Z.%Z.type (%Z.type.4d7) = symbolic_binding Self, 1 [symbolic = %Self.loc3_23.2 (constants.%Self.c41)]
 // CHECK:STDOUT:     %X: type = assoc_const_decl @X [concrete] {
 // CHECK:STDOUT:       %assoc0: @Z.%Z.assoc_type (%Z.assoc_type.815) = assoc_entity element0, @Z.%X [symbolic = @Z.%assoc0 (constants.%assoc0.6bf)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_23.1
 // CHECK:STDOUT:     .X = @X.%assoc0
 // CHECK:STDOUT:     witness = (%X)
 // CHECK:STDOUT:   }
@@ -616,7 +616,7 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:   witness = ()
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @X(@Z.%T.loc3_13.2: type, @Z.%Self.1: @Z.%Z.type (%Z.type.4d7)) {
+// CHECK:STDOUT: generic assoc_const @X(@Z.%T.loc3_13.2: type, @Z.%Self.loc3_23.1: @Z.%Z.type (%Z.type.4d7)) {
 // CHECK:STDOUT:   assoc_const X:! type;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -715,7 +715,7 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type => constants.%Z.type.c56
-// CHECK:STDOUT:   %Self.2 => constants.%Self.af2
+// CHECK:STDOUT:   %Self.loc3_23.2 => constants.%Self.af2
 // CHECK:STDOUT:   %Z.assoc_type => constants.%Z.assoc_type.fae
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.175
 // CHECK:STDOUT: }
@@ -743,7 +743,7 @@ fn F[T:! Ptr](var t: T) -> T.(Ptr.Type) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Z.type => constants.%Z.type.a71
-// CHECK:STDOUT:   %Self.2 => constants.%Self.6ec
+// CHECK:STDOUT:   %Self.loc3_23.2 => constants.%Self.6ec
 // CHECK:STDOUT:   %Z.assoc_type => constants.%Z.assoc_type.252
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.ea4
 // CHECK:STDOUT: }

toolchain/check/testdata/impl/lookup/specific_args.carbon

@@ -106,21 +106,21 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T.loc4_13.1)> [symbolic = %I.type (constants.%I.type.070)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc4_23.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self)]
 // CHECK:STDOUT:   %I.F.type: type = fn_type @I.F, @I(%T.loc4_13.1) [symbolic = %I.F.type (constants.%I.F.type)]
 // CHECK:STDOUT:   %I.F: @I.%I.F.type (%I.F.type) = struct_value () [symbolic = %I.F (constants.%I.F)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%T.loc4_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc4_43.2: @I.%I.assoc_type (%I.assoc_type) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc4_43.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc4_23.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc4_23.2 (constants.%Self)]
 // CHECK:STDOUT:     %I.F.decl: @I.%I.F.type (%I.F.type) = fn_decl @I.F [symbolic = @I.%I.F (constants.%I.F)] {
 // CHECK:STDOUT:       %self.patt: @I.F.%pattern_type (%pattern_type.dbc) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @I.F.%pattern_type (%pattern_type.dbc) = value_param_pattern %self.patt, call_param0 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %self.param: @I.F.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc4_36.1: type = splice_block %.loc4_36.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc4_36.2: @I.F.%I.type (%I.type.070) = specific_constant @I.%Self.1, @I(constants.%T) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %.loc4_36.2: @I.F.%I.type (%I.type.070) = specific_constant @I.%Self.loc4_23.1, @I(constants.%T) [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.ref: @I.F.%I.type (%I.type.070) = name_ref Self, %.loc4_36.2 [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc4_36.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -130,7 +130,7 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:     %assoc0.loc4_43.1: @I.%I.assoc_type (%I.assoc_type) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc4_43.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_23.1
 // CHECK:STDOUT:     .F = %assoc0.loc4_43.1
 // CHECK:STDOUT:     witness = (%I.F.decl)
 // CHECK:STDOUT:   }
@@ -158,7 +158,7 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:   .Self = constants.%X
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @I.F(@I.%T.loc4_13.2: type, @I.%Self.1: @I.%I.type (%I.type.070)) {
+// CHECK:STDOUT: generic fn @I.F(@I.%T.loc4_13.2: type, @I.%Self.loc4_23.1: @I.%I.type (%I.type.070)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T)> [symbolic = %I.type (constants.%I.type.070)]
 // CHECK:STDOUT:   %Self: @I.F.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self)]
@@ -222,11 +222,11 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//types, loc7_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.acf = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, loc4_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2de = import_ref Main//types, loc4_43, unloaded
 // CHECK:STDOUT:   %Main.F: @I.%I.F.type (%I.F.type.76d) = import_ref Main//types, F, loaded [symbolic = @I.%I.F (constants.%I.F.dde)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @I.%Self (constants.%Self.269)]
+// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, loc4_23, loaded [symbolic = @I.%Self (constants.%Self.269)]
 // CHECK:STDOUT:   %Main.import_ref.e2f = import_ref Main//types, loc4_43, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -389,11 +389,11 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//types, loc7_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.acf = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, loc4_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.715: @I.%I.assoc_type (%I.assoc_type.b65) = import_ref Main//types, loc4_43, loaded [symbolic = @I.%assoc0 (constants.%assoc0.254)]
 // CHECK:STDOUT:   %Main.F = import_ref Main//types, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @I.%Self (constants.%Self.269)]
+// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, loc4_23, loaded [symbolic = @I.%Self (constants.%Self.269)]
 // CHECK:STDOUT:   %Main.import_ref.21c: @I.%I.F.type (%I.F.type.76d) = import_ref Main//types, loc4_43, loaded [symbolic = @I.%I.F (constants.%I.F.dde)]
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.2: <witness> = import_ref Main//impl_in_interface_args, loc5_24, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.bf8 = import_ref Main//impl_in_interface_args, inst{{[0-9A-F]+}} [no loc], unloaded
@@ -554,11 +554,11 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.1: <witness> = import_ref Main//types, loc5_20, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.034 = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, loc4_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.2de = import_ref Main//types, loc4_43, unloaded
 // CHECK:STDOUT:   %Main.F: @I.%I.F.type (%I.F.type.76d) = import_ref Main//types, F, loaded [symbolic = @I.%I.F (constants.%I.F.dde)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.3: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @I.%Self (constants.%Self.269)]
+// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, loc4_23, loaded [symbolic = @I.%Self (constants.%Self.269)]
 // CHECK:STDOUT:   %Main.import_ref.e2f = import_ref Main//types, loc4_43, unloaded
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.2: <witness> = import_ref Main//types, loc7_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.acf = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
@@ -754,11 +754,11 @@ fn H(c: C(InClassArgs)) { c.(I(X).F)(); }
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.2: <witness> = import_ref Main//impl_in_class_args, loc5_20, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.683 = import_ref Main//impl_in_class_args, inst{{[0-9A-F]+}} [no loc], unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.769 = import_ref Main//types, loc4_23, unloaded
 // CHECK:STDOUT:   %Main.import_ref.715: @I.%I.assoc_type (%I.assoc_type.b65) = import_ref Main//types, loc4_43, loaded [symbolic = @I.%assoc0 (constants.%assoc0.254)]
 // CHECK:STDOUT:   %Main.F = import_ref Main//types, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.efcd44.3: type = import_ref Main//types, loc4_13, loaded [symbolic = @I.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @I.%Self (constants.%Self.269)]
+// CHECK:STDOUT:   %Main.import_ref.781: @I.%I.type (%I.type.070) = import_ref Main//types, loc4_23, loaded [symbolic = @I.%Self (constants.%Self.269)]
 // CHECK:STDOUT:   %Main.import_ref.21c: @I.%I.F.type (%I.F.type.76d) = import_ref Main//types, loc4_43, loaded [symbolic = @I.%I.F (constants.%I.F.dde)]
 // CHECK:STDOUT:   %Main.import_ref.8f24d3.3: <witness> = import_ref Main//types, loc7_10, loaded [concrete = constants.%complete_type]
 // CHECK:STDOUT:   %Main.import_ref.acf = import_ref Main//types, inst{{[0-9A-F]+}} [no loc], unloaded

toolchain/check/testdata/impl/lookup/transitive.carbon

@@ -137,10 +137,10 @@ fn Call() {
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//i, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//i, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.507 = import_ref Main//i, loc4_33, unloaded
 // CHECK:STDOUT:   %Main.F: %I.F.type = import_ref Main//i, F, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//i, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//i, loc4_13, loaded [symbolic = constants.%Self]
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -306,11 +306,11 @@ fn Call() {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Main.import_ref.8db: <witness> = import_ref Main//get, inst{{[0-9A-F]+}} [indirect], loaded [concrete = constants.%complete_type.357]
 // CHECK:STDOUT:   %Main.import_ref.6a9 = import_ref Main//get, inst{{[0-9A-F]+}} [indirect], unloaded
-// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//i, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.8df = import_ref Main//i, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.c44: %I.assoc_type = import_ref Main//i, loc4_33, loaded [concrete = constants.%assoc0.3f3]
 // CHECK:STDOUT:   %Main.F = import_ref Main//i, F, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e03: %I.F.type = import_ref Main//i, loc4_33, loaded [concrete = constants.%I.F]
-// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//i, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = constants.%Self.9f2]
+// CHECK:STDOUT:   %Main.import_ref.e33: %I.type = import_ref Main//i, loc4_13, loaded [symbolic = constants.%Self.9f2]
 // CHECK:STDOUT:   %Main.import_ref.f2d: <witness> = import_ref Main//c, loc7_13, loaded [concrete = constants.%I.impl_witness]
 // CHECK:STDOUT:   %Main.import_ref.29a: type = import_ref Main//c, loc7_6, loaded [concrete = constants.%C]
 // CHECK:STDOUT:   %Main.import_ref.f50: type = import_ref Main//c, loc7_11, loaded [concrete = constants.%I.type]

toolchain/check/testdata/impl/no_definition_in_impl_file.carbon

@@ -146,7 +146,7 @@ impl () as D;
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.A: type = import_ref Main//decl_in_api_definition_in_impl, A, loaded [concrete = constants.%A.type]
-// CHECK:STDOUT:   %Main.import_ref.3b8 = import_ref Main//decl_in_api_definition_in_impl, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.3b8 = import_ref Main//decl_in_api_definition_in_impl, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e5c: type = import_ref Main//decl_in_api_definition_in_impl, loc10_7, loaded [concrete = constants.%empty_tuple.type]
 // CHECK:STDOUT:   %Main.import_ref.831: type = import_ref Main//decl_in_api_definition_in_impl, loc10_12, loaded [concrete = constants.%A.type]
 // CHECK:STDOUT: }
@@ -246,7 +246,7 @@ impl () as D;
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.B = import_ref Main//decl_only_in_api, B, unloaded
-// CHECK:STDOUT:   %Main.import_ref.5c0 = import_ref Main//decl_only_in_api, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.5c0 = import_ref Main//decl_only_in_api, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e5c: type = import_ref Main//decl_only_in_api, loc10_7, loaded [concrete = constants.%empty_tuple.type]
 // CHECK:STDOUT:   %Main.import_ref.171: type = import_ref Main//decl_only_in_api, loc10_12, loaded [concrete = constants.%B.type]
 // CHECK:STDOUT: }
@@ -309,7 +309,7 @@ impl () as D;
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.C: type = import_ref Main//decl_in_api_decl_in_impl, C, loaded [concrete = constants.%C.type]
-// CHECK:STDOUT:   %Main.import_ref.a1a = import_ref Main//decl_in_api_decl_in_impl, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.a1a = import_ref Main//decl_in_api_decl_in_impl, loc4_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e5c: type = import_ref Main//decl_in_api_decl_in_impl, loc10_7, loaded [concrete = constants.%empty_tuple.type]
 // CHECK:STDOUT:   %Main.import_ref.653: type = import_ref Main//decl_in_api_decl_in_impl, loc10_12, loaded [concrete = constants.%C.type]
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/assoc_const_in_generic.carbon

@@ -89,14 +89,14 @@ fn H() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type: type = facet_type <@I, @I(%T.loc15_13.1)> [symbolic = %I.type (constants.%I.type.070)]
-// CHECK:STDOUT:   %Self.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:   %Self.loc15_23.2: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc15_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:   %I.F.type: type = fn_type @I.F, @I(%T.loc15_13.1) [symbolic = %I.F.type (constants.%I.F.type.76d)]
 // CHECK:STDOUT:   %I.F: @I.%I.F.type (%I.F.type.76d) = struct_value () [symbolic = %I.F (constants.%I.F.dde)]
 // CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I, @I(%T.loc15_13.1) [symbolic = %I.assoc_type (constants.%I.assoc_type.b65)]
 // CHECK:STDOUT:   %assoc0.loc16_22.2: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc16_22.2 (constants.%assoc0.b4f)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.269)]
+// CHECK:STDOUT:     %Self.loc15_23.1: @I.%I.type (%I.type.070) = symbolic_binding Self, 1 [symbolic = %Self.loc15_23.2 (constants.%Self.269)]
 // CHECK:STDOUT:     %I.F.decl: @I.%I.F.type (%I.F.type.76d) = fn_decl @I.F [symbolic = @I.%I.F (constants.%I.F.dde)] {
 // CHECK:STDOUT:       %U.patt: %pattern_type.98f = symbolic_binding_pattern U, 2 [concrete]
 // CHECK:STDOUT:       %return.patt: @I.F.%pattern_type (%pattern_type.533) = return_slot_pattern [concrete]
@@ -111,13 +111,13 @@ fn H() {
 // CHECK:STDOUT:     %assoc0.loc16_22.1: @I.%I.assoc_type (%I.assoc_type.b65) = assoc_entity element0, %I.F.decl [symbolic = %assoc0.loc16_22.2 (constants.%assoc0.b4f)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_23.1
 // CHECK:STDOUT:     .F = %assoc0.loc16_22.1
 // CHECK:STDOUT:     witness = (%I.F.decl)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @I.F(@I.%T.loc15_13.2: type, @I.%Self.1: @I.%I.type (%I.type.070), %U.loc16_8.2: type) {
+// CHECK:STDOUT: generic fn @I.F(@I.%T.loc15_13.2: type, @I.%Self.loc15_23.1: @I.%I.type (%I.type.070), %U.loc16_8.2: type) {
 // CHECK:STDOUT:   %U.loc16_8.1: type = symbolic_binding U, 2 [symbolic = %U.loc16_8.1 (constants.%U)]
 // CHECK:STDOUT:   %pattern_type: type = pattern_type %U.loc16_8.1 [symbolic = %pattern_type (constants.%pattern_type.533)]
 // CHECK:STDOUT:
@@ -160,7 +160,7 @@ fn H() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.070
-// CHECK:STDOUT:   %Self.2 => constants.%Self.269
+// CHECK:STDOUT:   %Self.loc15_23.2 => constants.%Self.269
 // CHECK:STDOUT:   %I.F.type => constants.%I.F.type.76d
 // CHECK:STDOUT:   %I.F => constants.%I.F.dde
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.b65
@@ -192,7 +192,7 @@ fn H() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %I.type => constants.%I.type.399
-// CHECK:STDOUT:   %Self.2 => constants.%Self.32d
+// CHECK:STDOUT:   %Self.loc15_23.2 => constants.%Self.32d
 // CHECK:STDOUT:   %I.F.type => constants.%I.F.type.684
 // CHECK:STDOUT:   %I.F => constants.%I.F.a8d
 // CHECK:STDOUT:   %I.assoc_type => constants.%I.assoc_type.22c

toolchain/check/testdata/interface/export_name.carbon

@@ -72,7 +72,7 @@ fn UseEmpty(i: I) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.I: type = import_ref Main//base, I, loaded [concrete = constants.%I.type]
-// CHECK:STDOUT:   %Main.import_ref = import_ref Main//base, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref = import_ref Main//base, loc4_13, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {

toolchain/check/testdata/interface/fail_add_member_outside_definition.carbon

@@ -85,18 +85,18 @@ interface Outer {
 // CHECK:STDOUT:
 // CHECK:STDOUT: generic interface @Inner(@Outer.%Self: %Outer.type) {
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %Self.2: %Outer.type = symbolic_binding Self, 0 [symbolic = %Self.2 (constants.%Self.b6a)]
-// CHECK:STDOUT:   %Inner.type: type = facet_type <@Inner, @Inner(%Self.2)> [symbolic = %Inner.type (constants.%Inner.type)]
-// CHECK:STDOUT:   %Self.3: @Inner.%Inner.type (%Inner.type) = symbolic_binding Self, 1 [symbolic = %Self.3 (constants.%Self.bcd)]
-// CHECK:STDOUT:   %Inner.F.type: type = fn_type @Inner.F.loc30, @Inner(%Self.2) [symbolic = %Inner.F.type (constants.%Inner.F.type.cda642.1)]
+// CHECK:STDOUT:   %Self.loc25_19.2: %Outer.type = symbolic_binding Self, 0 [symbolic = %Self.loc25_19.2 (constants.%Self.b6a)]
+// CHECK:STDOUT:   %Inner.type: type = facet_type <@Inner, @Inner(%Self.loc25_19.2)> [symbolic = %Inner.type (constants.%Inner.type)]
+// CHECK:STDOUT:   %Self.loc25_19.3: @Inner.%Inner.type (%Inner.type) = symbolic_binding Self, 1 [symbolic = %Self.loc25_19.3 (constants.%Self.bcd)]
+// CHECK:STDOUT:   %Inner.F.type: type = fn_type @Inner.F.loc30, @Inner(%Self.loc25_19.2) [symbolic = %Inner.F.type (constants.%Inner.F.type.cda642.1)]
 // CHECK:STDOUT:   %Inner.F: @Inner.%Inner.F.type (%Inner.F.type.cda642.1) = struct_value () [symbolic = %Inner.F (constants.%Inner.F.f944d2.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Inner.%Inner.type (%Inner.type) = symbolic_binding Self, 1 [symbolic = %Self.3 (constants.%Self.bcd)]
+// CHECK:STDOUT:     %Self.loc25_19.1: @Inner.%Inner.type (%Inner.type) = symbolic_binding Self, 1 [symbolic = %Self.loc25_19.3 (constants.%Self.bcd)]
 // CHECK:STDOUT:     %Inner.F.decl: @Inner.%Inner.F.type (%Inner.F.type.cda642.1) = fn_decl @Inner.F.loc30 [symbolic = @Inner.%Inner.F (constants.%Inner.F.f944d2.1)] {} {}
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc25_19.1
 // CHECK:STDOUT:     .F = @Outer.%Inner.F.decl
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
@@ -111,11 +111,11 @@ interface Outer {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Inner.F.loc30(@Outer.%Self: %Outer.type, @Inner.%Self.1: @Inner.%Inner.type (%Inner.type)) {
+// CHECK:STDOUT: generic fn @Inner.F.loc30(@Outer.%Self: %Outer.type, @Inner.%Self.loc25_19.1: @Inner.%Inner.type (%Inner.type)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @Inner.F.loc36(@Outer.%Self: %Outer.type, @Inner.%Self.1: @Inner.%Inner.type (%Inner.type)) {
+// CHECK:STDOUT: generic fn @Inner.F.loc36(@Outer.%Self: %Outer.type, @Inner.%Self.loc25_19.1: @Inner.%Inner.type (%Inner.type)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -123,9 +123,9 @@ interface Outer {
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @Inner(constants.%Self.b6a) {
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %Self.2 => constants.%Self.b6a
+// CHECK:STDOUT:   %Self.loc25_19.2 => constants.%Self.b6a
 // CHECK:STDOUT:   %Inner.type => constants.%Inner.type
-// CHECK:STDOUT:   %Self.3 => constants.%Self.bcd
+// CHECK:STDOUT:   %Self.loc25_19.3 => constants.%Self.bcd
 // CHECK:STDOUT:   %Inner.F.type => constants.%Inner.F.type.cda642.1
 // CHECK:STDOUT:   %Inner.F => constants.%Inner.F.f944d2.1
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/fail_assoc_const_alias.carbon

@@ -123,14 +123,14 @@ interface C {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest.loc3_22.1)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
-// CHECK:STDOUT:   %Self.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc3_35.2: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:   %ImplicitAs.Convert.type: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.Convert.type (constants.%ImplicitAs.Convert.type)]
 // CHECK:STDOUT:   %ImplicitAs.Convert: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = struct_value () [symbolic = %ImplicitAs.Convert (constants.%ImplicitAs.Convert)]
 // CHECK:STDOUT:   %ImplicitAs.assoc_type: type = assoc_entity_type @ImplicitAs, @ImplicitAs(%Dest.loc3_22.1) [symbolic = %ImplicitAs.assoc_type (constants.%ImplicitAs.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc4_35.2: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self.loc3_35.2 (constants.%Self)]
 // CHECK:STDOUT:     %ImplicitAs.Convert.decl: @ImplicitAs.%ImplicitAs.Convert.type (%ImplicitAs.Convert.type) = fn_decl @ImplicitAs.Convert [symbolic = @ImplicitAs.%ImplicitAs.Convert (constants.%ImplicitAs.Convert)] {
 // CHECK:STDOUT:       %self.patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @ImplicitAs.Convert.%pattern_type.loc4_14 (%pattern_type.4e2) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -140,7 +140,7 @@ interface C {
 // CHECK:STDOUT:       %Dest.ref: type = name_ref Dest, @ImplicitAs.%Dest.loc3_22.2 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:       %self.param: @ImplicitAs.Convert.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc4_20.1: type = splice_block %.loc4_20.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %.loc4_20.2: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = specific_constant @ImplicitAs.%Self.loc3_35.1, @ImplicitAs(constants.%Dest) [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.ref: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = name_ref Self, %.loc4_20.2 [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc4_20.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -152,14 +152,14 @@ interface C {
 // CHECK:STDOUT:     %assoc0.loc4_35.1: @ImplicitAs.%ImplicitAs.assoc_type (%ImplicitAs.assoc_type) = assoc_entity element0, %ImplicitAs.Convert.decl [symbolic = %assoc0.loc4_35.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_35.1
 // CHECK:STDOUT:     .Dest = <poisoned>
 // CHECK:STDOUT:     .Convert = %assoc0.loc4_35.1
 // CHECK:STDOUT:     witness = (%ImplicitAs.Convert.decl)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
+// CHECK:STDOUT: generic fn @ImplicitAs.Convert(@ImplicitAs.%Dest.loc3_22.2: type, @ImplicitAs.%Self.loc3_35.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.841)) {
 // CHECK:STDOUT:   %Dest: type = symbolic_binding Dest, 0 [symbolic = %Dest (constants.%Dest)]
 // CHECK:STDOUT:   %ImplicitAs.type: type = facet_type <@ImplicitAs, @ImplicitAs(%Dest)> [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.841)]
 // CHECK:STDOUT:   %Self: @ImplicitAs.Convert.%ImplicitAs.type (%ImplicitAs.type.841) = symbolic_binding Self, 1 [symbolic = %Self (constants.%Self)]

toolchain/check/testdata/interface/fail_generic_redeclaration.carbon

@@ -114,13 +114,13 @@ interface DifferentParams(T:! ()) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %NotGeneric.type: type = facet_type <@NotGeneric.loc23, @NotGeneric.loc23(%T.loc23_22.1)> [symbolic = %NotGeneric.type (constants.%NotGeneric.type.50a)]
-// CHECK:STDOUT:   %Self.2: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.50a) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.242)]
+// CHECK:STDOUT:   %Self.loc23_32.2: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.50a) = symbolic_binding Self, 1 [symbolic = %Self.loc23_32.2 (constants.%Self.242)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.50a) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.242)]
+// CHECK:STDOUT:     %Self.loc23_32.1: @NotGeneric.loc23.%NotGeneric.type (%NotGeneric.type.50a) = symbolic_binding Self, 1 [symbolic = %Self.loc23_32.2 (constants.%Self.242)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc23_32.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -150,13 +150,13 @@ interface DifferentParams(T:! ()) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %DifferentParams.type: type = facet_type <@DifferentParams.loc43, @DifferentParams.loc43(%T.loc43_27.1)> [symbolic = %DifferentParams.type (constants.%DifferentParams.type.0ec)]
-// CHECK:STDOUT:   %Self.2: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.0ec) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c69)]
+// CHECK:STDOUT:   %Self.loc43_35.2: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.0ec) = symbolic_binding Self, 1 [symbolic = %Self.loc43_35.2 (constants.%Self.c69)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.0ec) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.c69)]
+// CHECK:STDOUT:     %Self.loc43_35.1: @DifferentParams.loc43.%DifferentParams.type (%DifferentParams.type.0ec) = symbolic_binding Self, 1 [symbolic = %Self.loc43_35.2 (constants.%Self.c69)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc43_35.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/generic.carbon

@@ -193,13 +193,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Simple.type: type = facet_type <@Simple, @Simple(%T.loc4_18.1)> [symbolic = %Simple.type (constants.%Simple.type.85b)]
-// CHECK:STDOUT:   %Self.2: @Simple.%Simple.type (%Simple.type.85b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.355)]
+// CHECK:STDOUT:   %Self.loc4_28.2: @Simple.%Simple.type (%Simple.type.85b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_28.2 (constants.%Self.355)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Simple.%Simple.type (%Simple.type.85b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.355)]
+// CHECK:STDOUT:     %Self.loc4_28.1: @Simple.%Simple.type (%Simple.type.85b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_28.2 (constants.%Self.355)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_28.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -209,14 +209,14 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %WithAssocFn.type: type = facet_type <@WithAssocFn, @WithAssocFn(%T.loc8_23.1)> [symbolic = %WithAssocFn.type (constants.%WithAssocFn.type.507)]
-// CHECK:STDOUT:   %Self.2: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.33c)]
+// CHECK:STDOUT:   %Self.loc8_33.2: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507) = symbolic_binding Self, 1 [symbolic = %Self.loc8_33.2 (constants.%Self.33c)]
 // CHECK:STDOUT:   %WithAssocFn.F.type: type = fn_type @WithAssocFn.F, @WithAssocFn(%T.loc8_23.1) [symbolic = %WithAssocFn.F.type (constants.%WithAssocFn.F.type.c9b)]
 // CHECK:STDOUT:   %WithAssocFn.F: @WithAssocFn.%WithAssocFn.F.type (%WithAssocFn.F.type.c9b) = struct_value () [symbolic = %WithAssocFn.F (constants.%WithAssocFn.F.deb)]
 // CHECK:STDOUT:   %WithAssocFn.assoc_type: type = assoc_entity_type @WithAssocFn, @WithAssocFn(%T.loc8_23.1) [symbolic = %WithAssocFn.assoc_type (constants.%WithAssocFn.assoc_type.7e6)]
 // CHECK:STDOUT:   %assoc0.loc10_14.2: @WithAssocFn.%WithAssocFn.assoc_type (%WithAssocFn.assoc_type.7e6) = assoc_entity element0, %WithAssocFn.F.decl [symbolic = %assoc0.loc10_14.2 (constants.%assoc0.141)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.33c)]
+// CHECK:STDOUT:     %Self.loc8_33.1: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507) = symbolic_binding Self, 1 [symbolic = %Self.loc8_33.2 (constants.%Self.33c)]
 // CHECK:STDOUT:     %WithAssocFn.F.decl: @WithAssocFn.%WithAssocFn.F.type (%WithAssocFn.F.type.c9b) = fn_decl @WithAssocFn.F [symbolic = @WithAssocFn.%WithAssocFn.F (constants.%WithAssocFn.F.deb)] {
 // CHECK:STDOUT:       %return.patt: %pattern_type.019 = return_slot_pattern [concrete]
 // CHECK:STDOUT:       %return.param_patt: %pattern_type.019 = out_param_pattern %return.patt, call_param0 [concrete]
@@ -228,7 +228,7 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:     %assoc0.loc10_14.1: @WithAssocFn.%WithAssocFn.assoc_type (%WithAssocFn.assoc_type.7e6) = assoc_entity element0, %WithAssocFn.F.decl [symbolic = %assoc0.loc10_14.2 (constants.%assoc0.141)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc8_33.1
 // CHECK:STDOUT:     .X = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc10_14.1
 // CHECK:STDOUT:     witness = (%WithAssocFn.F.decl)
@@ -300,7 +300,7 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:   .X = <poisoned>
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @WithAssocFn.F(@WithAssocFn.%T.loc8_23.2: type, @WithAssocFn.%Self.1: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507)) {
+// CHECK:STDOUT: generic fn @WithAssocFn.F(@WithAssocFn.%T.loc8_23.2: type, @WithAssocFn.%Self.loc8_33.1: @WithAssocFn.%WithAssocFn.type (%WithAssocFn.type.507)) {
 // CHECK:STDOUT:   fn() -> %return.param: %X;
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -354,7 +354,7 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Simple.type => constants.%Simple.type.ebf
-// CHECK:STDOUT:   %Self.2 => constants.%Self.671
+// CHECK:STDOUT:   %Self.loc4_28.2 => constants.%Self.671
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @WithAssocFn(constants.%C) {
@@ -362,7 +362,7 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %WithAssocFn.type => constants.%WithAssocFn.type.fc9
-// CHECK:STDOUT:   %Self.2 => constants.%Self.669
+// CHECK:STDOUT:   %Self.loc8_33.2 => constants.%Self.669
 // CHECK:STDOUT:   %WithAssocFn.F.type => constants.%WithAssocFn.F.type.18c
 // CHECK:STDOUT:   %WithAssocFn.F => constants.%WithAssocFn.F.e46
 // CHECK:STDOUT:   %WithAssocFn.assoc_type => constants.%WithAssocFn.assoc_type.9ea
@@ -461,13 +461,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%T.loc4_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68b)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:   %Self.loc4_29.2: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.fc1)]
+// CHECK:STDOUT:     %Self.loc4_29.1: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self.fc1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_29.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -526,7 +526,7 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type => constants.%Generic.type.227
-// CHECK:STDOUT:   %Self.2 => constants.%Self.fc0
+// CHECK:STDOUT:   %Self.loc4_29.2 => constants.%Self.fc0
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @G(constants.%T.7ca) {
@@ -578,13 +578,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Generic.type: type = facet_type <@Generic, @Generic(%T.loc3_19.1)> [symbolic = %Generic.type (constants.%Generic.type.68b)]
-// CHECK:STDOUT:   %Self.2: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc3_29.2: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.loc3_29.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc3_29.1: @Generic.%Generic.type (%Generic.type.68b) = symbolic_binding Self, 1 [symbolic = %Self.loc3_29.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc3_29.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/generic_import.carbon

@@ -65,25 +65,25 @@ impl C as AddWith(C) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %AddWith.type: type = facet_type <@AddWith, @AddWith(%T.loc4_19.1)> [symbolic = %AddWith.type (constants.%AddWith.type.302)]
-// CHECK:STDOUT:   %Self.2: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc4_29.2: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self)]
 // CHECK:STDOUT:   %AddWith.F.type: type = fn_type @AddWith.F, @AddWith(%T.loc4_19.1) [symbolic = %AddWith.F.type (constants.%AddWith.F.type)]
 // CHECK:STDOUT:   %AddWith.F: @AddWith.%AddWith.F.type (%AddWith.F.type) = struct_value () [symbolic = %AddWith.F (constants.%AddWith.F)]
 // CHECK:STDOUT:   %AddWith.assoc_type: type = assoc_entity_type @AddWith, @AddWith(%T.loc4_19.1) [symbolic = %AddWith.assoc_type (constants.%AddWith.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc5_9.2: @AddWith.%AddWith.assoc_type (%AddWith.assoc_type) = assoc_entity element0, %AddWith.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc4_29.1: @AddWith.%AddWith.type (%AddWith.type.302) = symbolic_binding Self, 1 [symbolic = %Self.loc4_29.2 (constants.%Self)]
 // CHECK:STDOUT:     %AddWith.F.decl: @AddWith.%AddWith.F.type (%AddWith.F.type) = fn_decl @AddWith.F [symbolic = @AddWith.%AddWith.F (constants.%AddWith.F)] {} {}
 // CHECK:STDOUT:     %assoc0.loc5_9.1: @AddWith.%AddWith.assoc_type (%AddWith.assoc_type) = assoc_entity element0, %AddWith.F.decl [symbolic = %assoc0.loc5_9.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_29.1
 // CHECK:STDOUT:     .F = %assoc0.loc5_9.1
 // CHECK:STDOUT:     witness = (%AddWith.F.decl)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @AddWith.F(@AddWith.%T.loc4_19.2: type, @AddWith.%Self.1: @AddWith.%AddWith.type (%AddWith.type.302)) {
+// CHECK:STDOUT: generic fn @AddWith.F(@AddWith.%T.loc4_19.2: type, @AddWith.%Self.loc4_29.1: @AddWith.%AddWith.type (%AddWith.type.302)) {
 // CHECK:STDOUT:   fn();
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -123,11 +123,11 @@ impl C as AddWith(C) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.AddWith: %AddWith.type.b35 = import_ref Main//a, AddWith, loaded [concrete = constants.%AddWith.generic]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.1: type = import_ref Main//a, loc4_19, loaded [symbolic = @AddWith.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.833 = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.833 = import_ref Main//a, loc4_29, unloaded
 // CHECK:STDOUT:   %Main.import_ref.073 = import_ref Main//a, loc5_9, unloaded
 // CHECK:STDOUT:   %Main.F: @AddWith.%AddWith.F.type (%AddWith.F.type.d64) = import_ref Main//a, F, loaded [symbolic = @AddWith.%AddWith.F (constants.%AddWith.F.fa8)]
 // CHECK:STDOUT:   %Main.import_ref.efcd44.2: type = import_ref Main//a, loc4_19, loaded [symbolic = @AddWith.%T (constants.%T)]
-// CHECK:STDOUT:   %Main.import_ref.2bd: @AddWith.%AddWith.type (%AddWith.type.302) = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @AddWith.%Self (constants.%Self.236)]
+// CHECK:STDOUT:   %Main.import_ref.2bd: @AddWith.%AddWith.type (%AddWith.type.302) = import_ref Main//a, loc4_29, loaded [symbolic = @AddWith.%Self (constants.%Self.236)]
 // CHECK:STDOUT:   %Main.import_ref.543 = import_ref Main//a, loc5_9, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT:

toolchain/check/testdata/interface/generic_method.carbon

@@ -269,14 +269,14 @@ fn CallIndirect() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %A.type: type = facet_type <@A, @A(%T.loc5_13.1)> [symbolic = %A.type (constants.%A.type.c1c)]
-// CHECK:STDOUT:   %Self.2: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.27c)]
+// CHECK:STDOUT:   %Self.loc5_23.2: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.27c)]
 // CHECK:STDOUT:   %A.F.type: type = fn_type @A.F, @A(%T.loc5_13.1) [symbolic = %A.F.type (constants.%A.F.type.de8)]
 // CHECK:STDOUT:   %A.F: @A.%A.F.type (%A.F.type.de8) = struct_value () [symbolic = %A.F (constants.%A.F.bd2)]
 // CHECK:STDOUT:   %A.assoc_type: type = assoc_entity_type @A, @A(%T.loc5_13.1) [symbolic = %A.assoc_type (constants.%A.assoc_type.23a)]
 // CHECK:STDOUT:   %assoc0.loc6_41.2: @A.%A.assoc_type (%A.assoc_type.23a) = assoc_entity element0, %A.F.decl [symbolic = %assoc0.loc6_41.2 (constants.%assoc0.1c7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.27c)]
+// CHECK:STDOUT:     %Self.loc5_23.1: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.27c)]
 // CHECK:STDOUT:     %A.F.decl: @A.%A.F.type (%A.F.type.de8) = fn_decl @A.F [symbolic = @A.%A.F (constants.%A.F.bd2)] {
 // CHECK:STDOUT:       %U.patt: %pattern_type.98f = symbolic_binding_pattern U, 2 [concrete]
 // CHECK:STDOUT:       %u.patt: @A.F.%pattern_type.loc6_18 (%pattern_type.854) = value_binding_pattern u [concrete]
@@ -285,7 +285,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:       %return.param_patt: @A.F.%pattern_type.loc6_25 (%pattern_type.85c) = out_param_pattern %return.patt, call_param1 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @A.%T.loc5_13.2 [symbolic = %T (constants.%T.d9f)]
-// CHECK:STDOUT:       %.loc6_32: @A.F.%A.type (%A.type.c1c) = specific_constant @A.%Self.1, @A(constants.%T.d9f) [symbolic = %Self (constants.%Self.27c)]
+// CHECK:STDOUT:       %.loc6_32: @A.F.%A.type (%A.type.c1c) = specific_constant @A.%Self.loc5_23.1, @A(constants.%T.d9f) [symbolic = %Self (constants.%Self.27c)]
 // CHECK:STDOUT:       %Self.ref: @A.F.%A.type (%A.type.c1c) = name_ref Self, %.loc6_32 [symbolic = %Self (constants.%Self.27c)]
 // CHECK:STDOUT:       %U.ref.loc6_38: type = name_ref U, %U.loc6_8.2 [symbolic = %U.loc6_8.1 (constants.%U.63a)]
 // CHECK:STDOUT:       %ptr.loc6_39: type = ptr_type %U.ref.loc6_38 [symbolic = %ptr.loc6_22.1 (constants.%ptr.e49)]
@@ -307,7 +307,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:     %assoc0.loc6_41.1: @A.%A.assoc_type (%A.assoc_type.23a) = assoc_entity element0, %A.F.decl [symbolic = %assoc0.loc6_41.2 (constants.%assoc0.1c7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc5_23.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc6_41.1
 // CHECK:STDOUT:     witness = (%A.F.decl)
@@ -371,7 +371,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:   .Self = constants.%Z
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @A.F(@A.%T.loc5_13.2: type, @A.%Self.1: @A.%A.type (%A.type.c1c), %U.loc6_8.2: type) {
+// CHECK:STDOUT: generic fn @A.F(@A.%T.loc5_13.2: type, @A.%Self.loc5_23.1: @A.%A.type (%A.type.c1c), %U.loc6_8.2: type) {
 // CHECK:STDOUT:   %U.loc6_8.1: type = symbolic_binding U, 2 [symbolic = %U.loc6_8.1 (constants.%U.63a)]
 // CHECK:STDOUT:   %ptr.loc6_22.1: type = ptr_type %U.loc6_8.1 [symbolic = %ptr.loc6_22.1 (constants.%ptr.e49)]
 // CHECK:STDOUT:   %pattern_type.loc6_18: type = pattern_type %ptr.loc6_22.1 [symbolic = %pattern_type.loc6_18 (constants.%pattern_type.854)]
@@ -559,7 +559,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %A.type => constants.%A.type.0a4
-// CHECK:STDOUT:   %Self.2 => constants.%Self.789
+// CHECK:STDOUT:   %Self.loc5_23.2 => constants.%Self.789
 // CHECK:STDOUT:   %A.F.type => constants.%A.F.type.13d
 // CHECK:STDOUT:   %A.F => constants.%A.F.d83
 // CHECK:STDOUT:   %A.assoc_type => constants.%A.assoc_type.296
@@ -853,14 +853,14 @@ fn CallIndirect() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %A.type: type = facet_type <@A, @A(%T.loc5_13.1)> [symbolic = %A.type (constants.%A.type.c1c)]
-// CHECK:STDOUT:   %Self.2: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.27c)]
+// CHECK:STDOUT:   %Self.loc5_23.2: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.27c)]
 // CHECK:STDOUT:   %A.F.type: type = fn_type @A.F, @A(%T.loc5_13.1) [symbolic = %A.F.type (constants.%A.F.type.de8)]
 // CHECK:STDOUT:   %A.F: @A.%A.F.type (%A.F.type.de8) = struct_value () [symbolic = %A.F (constants.%A.F.bd2)]
 // CHECK:STDOUT:   %A.assoc_type: type = assoc_entity_type @A, @A(%T.loc5_13.1) [symbolic = %A.assoc_type (constants.%A.assoc_type.23a)]
 // CHECK:STDOUT:   %assoc0.loc6_39.2: @A.%A.assoc_type (%A.assoc_type.23a) = assoc_entity element0, %A.F.decl [symbolic = %assoc0.loc6_39.2 (constants.%assoc0.1c7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.27c)]
+// CHECK:STDOUT:     %Self.loc5_23.1: @A.%A.type (%A.type.c1c) = symbolic_binding Self, 1 [symbolic = %Self.loc5_23.2 (constants.%Self.27c)]
 // CHECK:STDOUT:     %A.F.decl: @A.%A.F.type (%A.F.type.de8) = fn_decl @A.F [symbolic = @A.%A.F (constants.%A.F.bd2)] {
 // CHECK:STDOUT:       %U.patt: %pattern_type.98f = symbolic_binding_pattern U, 2 [concrete]
 // CHECK:STDOUT:       %u.patt: @A.F.%pattern_type.loc6_18 (%pattern_type.533) = value_binding_pattern u [concrete]
@@ -869,7 +869,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:       %return.param_patt: @A.F.%pattern_type.loc6_24 (%pattern_type.845) = out_param_pattern %return.patt, call_param1 [concrete]
 // CHECK:STDOUT:     } {
 // CHECK:STDOUT:       %T.ref: type = name_ref T, @A.%T.loc5_13.2 [symbolic = %T (constants.%T.d9f)]
-// CHECK:STDOUT:       %.loc6_31: @A.F.%A.type (%A.type.c1c) = specific_constant @A.%Self.1, @A(constants.%T.d9f) [symbolic = %Self (constants.%Self.27c)]
+// CHECK:STDOUT:       %.loc6_31: @A.F.%A.type (%A.type.c1c) = specific_constant @A.%Self.loc5_23.1, @A(constants.%T.d9f) [symbolic = %Self (constants.%Self.27c)]
 // CHECK:STDOUT:       %Self.ref: @A.F.%A.type (%A.type.c1c) = name_ref Self, %.loc6_31 [symbolic = %Self (constants.%Self.27c)]
 // CHECK:STDOUT:       %U.ref.loc6_37: type = name_ref U, %U.loc6_8.2 [symbolic = %U.loc6_8.1 (constants.%U.63a)]
 // CHECK:STDOUT:       %.loc6_38.1: @A.F.%tuple.type.loc6_38.1 (%tuple.type.004) = tuple_literal (%T.ref, %Self.ref, %U.ref.loc6_37)
@@ -887,7 +887,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:     %assoc0.loc6_39.1: @A.%A.assoc_type (%A.assoc_type.23a) = assoc_entity element0, %A.F.decl [symbolic = %assoc0.loc6_39.2 (constants.%assoc0.1c7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc5_23.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .F = %assoc0.loc6_39.1
 // CHECK:STDOUT:     witness = (%A.F.decl)
@@ -973,7 +973,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:   .Self = constants.%Z
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @A.F(@A.%T.loc5_13.2: type, @A.%Self.1: @A.%A.type (%A.type.c1c), %U.loc6_8.2: type) {
+// CHECK:STDOUT: generic fn @A.F(@A.%T.loc5_13.2: type, @A.%Self.loc5_23.1: @A.%A.type (%A.type.c1c), %U.loc6_8.2: type) {
 // CHECK:STDOUT:   %U.loc6_8.1: type = symbolic_binding U, 2 [symbolic = %U.loc6_8.1 (constants.%U.63a)]
 // CHECK:STDOUT:   %pattern_type.loc6_18: type = pattern_type %U.loc6_8.1 [symbolic = %pattern_type.loc6_18 (constants.%pattern_type.533)]
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T.d9f)]
@@ -1147,7 +1147,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %A.type => constants.%A.type.2ec
-// CHECK:STDOUT:   %Self.2 => constants.%Self.b6c
+// CHECK:STDOUT:   %Self.loc5_23.2 => constants.%Self.b6c
 // CHECK:STDOUT:   %A.F.type => constants.%A.F.type.f65
 // CHECK:STDOUT:   %A.F => constants.%A.F.d51
 // CHECK:STDOUT:   %A.assoc_type => constants.%A.assoc_type.abb
@@ -1203,7 +1203,7 @@ fn CallIndirect() {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %A.type => constants.%A.type.0a4
-// CHECK:STDOUT:   %Self.2 => constants.%Self.789
+// CHECK:STDOUT:   %Self.loc5_23.2 => constants.%Self.789
 // CHECK:STDOUT:   %A.F.type => constants.%A.F.type.13d
 // CHECK:STDOUT:   %A.F => constants.%A.F.d83
 // CHECK:STDOUT:   %A.assoc_type => constants.%A.assoc_type.296

toolchain/check/testdata/interface/generic_vs_params.carbon

@@ -207,13 +207,13 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %GenericAndParams.type: type = facet_type <@GenericAndParams.loc6, @GenericAndParams.loc6(%T.loc6_28.1)> [symbolic = %GenericAndParams.type (constants.%GenericAndParams.type.741)]
-// CHECK:STDOUT:   %Self.2: @GenericAndParams.loc6.%GenericAndParams.type (%GenericAndParams.type.741) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.a56)]
+// CHECK:STDOUT:   %Self.loc6_38.2: @GenericAndParams.loc6.%GenericAndParams.type (%GenericAndParams.type.741) = symbolic_binding Self, 1 [symbolic = %Self.loc6_38.2 (constants.%Self.a56)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @GenericAndParams.loc6.%GenericAndParams.type (%GenericAndParams.type.741) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.a56)]
+// CHECK:STDOUT:     %Self.loc6_38.1: @GenericAndParams.loc6.%GenericAndParams.type (%GenericAndParams.type.741) = symbolic_binding Self, 1 [symbolic = %Self.loc6_38.2 (constants.%Self.a56)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc6_38.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -222,13 +222,13 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %GenericNoParams.type: type = facet_type <@GenericNoParams, @GenericNoParams(%T)> [symbolic = %GenericNoParams.type (constants.%GenericNoParams.type.672)]
-// CHECK:STDOUT:   %Self.2: @GenericNoParams.%GenericNoParams.type (%GenericNoParams.type.672) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.ed2)]
+// CHECK:STDOUT:   %Self.loc9_29.2: @GenericNoParams.%GenericNoParams.type (%GenericNoParams.type.672) = symbolic_binding Self, 1 [symbolic = %Self.loc9_29.2 (constants.%Self.ed2)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @GenericNoParams.%GenericNoParams.type (%GenericNoParams.type.672) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.ed2)]
+// CHECK:STDOUT:     %Self.loc9_29.1: @GenericNoParams.%GenericNoParams.type (%GenericNoParams.type.672) = symbolic_binding Self, 1 [symbolic = %Self.loc9_29.2 (constants.%Self.ed2)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc9_29.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -239,13 +239,13 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %GenericAndParams.type: type = facet_type <@GenericAndParams.loc10, @GenericAndParams.loc10(%T, %U.loc10_30.1)> [symbolic = %GenericAndParams.type (constants.%GenericAndParams.type.506)]
-// CHECK:STDOUT:   %Self.2: @GenericAndParams.loc10.%GenericAndParams.type (%GenericAndParams.type.506) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.202)]
+// CHECK:STDOUT:   %Self.loc10_40.2: @GenericAndParams.loc10.%GenericAndParams.type (%GenericAndParams.type.506) = symbolic_binding Self, 2 [symbolic = %Self.loc10_40.2 (constants.%Self.202)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @GenericAndParams.loc10.%GenericAndParams.type (%GenericAndParams.type.506) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self.202)]
+// CHECK:STDOUT:     %Self.loc10_40.1: @GenericAndParams.loc10.%GenericAndParams.type (%GenericAndParams.type.506) = symbolic_binding Self, 2 [symbolic = %Self.loc10_40.2 (constants.%Self.202)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc10_40.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -328,7 +328,7 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %GenericAndParams.type => constants.%GenericAndParams.type.674
-// CHECK:STDOUT:   %Self.2 => constants.%Self.1d4
+// CHECK:STDOUT:   %Self.loc6_38.2 => constants.%Self.1d4
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @C(constants.%X) {
@@ -344,7 +344,7 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T => constants.%X
 // CHECK:STDOUT:   %GenericNoParams.type => constants.%GenericNoParams.type.7ce
-// CHECK:STDOUT:   %Self.2 => constants.%Self.96e
+// CHECK:STDOUT:   %Self.loc9_29.2 => constants.%Self.96e
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: specific @GenericAndParams.loc10(constants.%X, constants.%X) {
@@ -353,7 +353,7 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %T => constants.%X
 // CHECK:STDOUT:   %GenericAndParams.type => constants.%GenericAndParams.type.e77
-// CHECK:STDOUT:   %Self.2 => constants.%Self.b70
+// CHECK:STDOUT:   %Self.loc10_40.2 => constants.%Self.b70
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: --- fail_non_generic_implicit_params.carbon
@@ -458,13 +458,13 @@ interface Bar[T:! type] {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Bar.type: type = facet_type <@Bar, @Bar(%T.loc8_15.1)> [symbolic = %Bar.type (constants.%Bar.type.70d)]
-// CHECK:STDOUT:   %Self.2: @Bar.%Bar.type (%Bar.type.70d) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc8_25.2: @Bar.%Bar.type (%Bar.type.70d) = symbolic_binding Self, 1 [symbolic = %Self.loc8_25.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Bar.%Bar.type (%Bar.type.70d) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc8_25.1: @Bar.%Bar.type (%Bar.type.70d) = symbolic_binding Self, 1 [symbolic = %Self.loc8_25.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc8_25.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/import.carbon

@@ -220,13 +220,13 @@ var f: ForwardDeclared* = &f_ref.f;
 // CHECK:STDOUT:     import Core//prelude
 // CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Main.import_ref.257 = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
-// CHECK:STDOUT:   %Main.import_ref.58d = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.257 = import_ref Main//a, loc4_17, unloaded
+// CHECK:STDOUT:   %Main.import_ref.58d = import_ref Main//a, loc7_17, unloaded
 // CHECK:STDOUT:   %Main.import_ref.3d5: %Basic.assoc_type = import_ref Main//a, loc8_8, loaded [concrete = constants.%assoc0.fee]
 // CHECK:STDOUT:   %Main.import_ref.760: %Basic.assoc_type = import_ref Main//a, loc9_9, loaded [concrete = constants.%assoc1.4ea]
 // CHECK:STDOUT:   %Main.T.44f = import_ref Main//a, T, unloaded
 // CHECK:STDOUT:   %Main.F.eea = import_ref Main//a, F, unloaded
-// CHECK:STDOUT:   %Main.import_ref.60d = import_ref Main//a, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.60d = import_ref Main//a, loc15_27, unloaded
 // CHECK:STDOUT:   %Main.import_ref.ad1: %ForwardDeclared.assoc_type = import_ref Main//a, loc16_8, loaded [concrete = constants.%assoc0.d40]
 // CHECK:STDOUT:   %Main.import_ref.339: %ForwardDeclared.assoc_type = import_ref Main//a, loc17_9, loaded [concrete = constants.%assoc1.e3d]
 // CHECK:STDOUT:   %Main.T.6ee = import_ref Main//a, T, unloaded

toolchain/check/testdata/interface/import_access.carbon

@@ -214,7 +214,7 @@ private interface Redecl {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Test.Def: type = import_ref Test//def, Def, loaded [concrete = constants.%Def.type]
-// CHECK:STDOUT:   %Test.import_ref = import_ref Test//def, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Test.import_ref = import_ref Test//def, loc4_23, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {
@@ -322,7 +322,7 @@ private interface Redecl {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Test.ForwardWithDef: type = import_ref Test//forward_with_def, ForwardWithDef, loaded [concrete = constants.%ForwardWithDef.type]
-// CHECK:STDOUT:   %Test.import_ref = import_ref Test//forward_with_def, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Test.import_ref = import_ref Test//forward_with_def, loc6_26, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
 // CHECK:STDOUT: file {

toolchain/check/testdata/interface/import_interface_decl.carbon

@@ -102,7 +102,7 @@ impl library "[[@TEST_NAME]]";
 // CHECK:STDOUT:
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Main.B = import_ref Main//b, B, unloaded
-// CHECK:STDOUT:   %Main.import_ref.5c0 = import_ref Main//b, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Main.import_ref.5c0 = import_ref Main//b, loc2_13, unloaded
 // CHECK:STDOUT:   %Main.import_ref.e5c: type = import_ref Main//b, loc7_7, loaded [concrete = constants.%empty_tuple.type]
 // CHECK:STDOUT:   %Main.import_ref.171: type = import_ref Main//b, loc7_12, loaded [concrete = constants.%B.type]
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/member_lookup.carbon

@@ -188,25 +188,25 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type: type = facet_type <@Interface, @Interface(%T.loc4_21.1)> [symbolic = %Interface.type (constants.%Interface.type.06b)]
-// CHECK:STDOUT:   %Self.2: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d36)]
+// CHECK:STDOUT:   %Self.loc4_31.2: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_31.2 (constants.%Self.d36)]
 // CHECK:STDOUT:   %Interface.assoc_type: type = assoc_entity_type @Interface, @Interface(%T.loc4_21.1) [symbolic = %Interface.assoc_type (constants.%Interface.assoc_type.e9d)]
 // CHECK:STDOUT:   %assoc0: @Interface.%Interface.assoc_type (%Interface.assoc_type.e9d) = assoc_entity element0, %X [symbolic = %assoc0 (constants.%assoc0.39b)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d36)]
+// CHECK:STDOUT:     %Self.loc4_31.1: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_31.2 (constants.%Self.d36)]
 // CHECK:STDOUT:     %X: @X.%ptr (%ptr.4f0) = assoc_const_decl @X [concrete] {
 // CHECK:STDOUT:       %assoc0: @Interface.%Interface.assoc_type (%Interface.assoc_type.e9d) = assoc_entity element0, @Interface.%X [symbolic = @Interface.%assoc0 (constants.%assoc0.39b)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_31.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .X = @X.%assoc0
 // CHECK:STDOUT:     witness = (%X)
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @X(@Interface.%T.loc4_21.2: type, @Interface.%Self.1: @Interface.%Interface.type (%Interface.type.06b)) {
+// CHECK:STDOUT: generic assoc_const @X(@Interface.%T.loc4_21.2: type, @Interface.%Self.loc4_31.1: @Interface.%Interface.type (%Interface.type.06b)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T.d9f)]
 // CHECK:STDOUT:   %ptr: type = ptr_type %T [symbolic = %ptr (constants.%ptr.4f0)]
 // CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %ptr [symbolic = %require_complete (constants.%require_complete.482)]
@@ -287,7 +287,7 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type => constants.%Interface.type.06b
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d36
+// CHECK:STDOUT:   %Self.loc4_31.2 => constants.%Self.d36
 // CHECK:STDOUT:   %Interface.assoc_type => constants.%Interface.assoc_type.e9d
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.39b
 // CHECK:STDOUT: }
@@ -318,7 +318,7 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type => constants.%Interface.type.02f
-// CHECK:STDOUT:   %Self.2 => constants.%Self.1f1
+// CHECK:STDOUT:   %Self.loc4_31.2 => constants.%Self.1f1
 // CHECK:STDOUT:   %Interface.assoc_type => constants.%Interface.assoc_type.aaa
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.c50
 // CHECK:STDOUT: }
@@ -437,18 +437,18 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type: type = facet_type <@Interface, @Interface(%T.loc4_21.1)> [symbolic = %Interface.type (constants.%Interface.type.06b)]
-// CHECK:STDOUT:   %Self.2: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d36)]
+// CHECK:STDOUT:   %Self.loc4_31.2: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_31.2 (constants.%Self.d36)]
 // CHECK:STDOUT:   %Interface.assoc_type: type = assoc_entity_type @Interface, @Interface(%T.loc4_21.1) [symbolic = %Interface.assoc_type (constants.%Interface.assoc_type.e9d)]
 // CHECK:STDOUT:   %assoc0: @Interface.%Interface.assoc_type (%Interface.assoc_type.e9d) = assoc_entity element0, %X [symbolic = %assoc0 (constants.%assoc0.39b)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.d36)]
+// CHECK:STDOUT:     %Self.loc4_31.1: @Interface.%Interface.type (%Interface.type.06b) = symbolic_binding Self, 1 [symbolic = %Self.loc4_31.2 (constants.%Self.d36)]
 // CHECK:STDOUT:     %X: @X.%ptr (%ptr) = assoc_const_decl @X [concrete] {
 // CHECK:STDOUT:       %assoc0: @Interface.%Interface.assoc_type (%Interface.assoc_type.e9d) = assoc_entity element0, @Interface.%X [symbolic = @Interface.%assoc0 (constants.%assoc0.39b)]
 // CHECK:STDOUT:     }
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_31.1
 // CHECK:STDOUT:     .T = <poisoned>
 // CHECK:STDOUT:     .X = @X.%assoc0
 // CHECK:STDOUT:     .nonesuch = <poisoned>
@@ -456,7 +456,7 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic assoc_const @X(@Interface.%T.loc4_21.2: type, @Interface.%Self.1: @Interface.%Interface.type (%Interface.type.06b)) {
+// CHECK:STDOUT: generic assoc_const @X(@Interface.%T.loc4_21.2: type, @Interface.%Self.loc4_31.1: @Interface.%Interface.type (%Interface.type.06b)) {
 // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
 // CHECK:STDOUT:   %ptr: type = ptr_type %T [symbolic = %ptr (constants.%ptr)]
 // CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %ptr [symbolic = %require_complete (constants.%require_complete.482)]
@@ -501,7 +501,7 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type => constants.%Interface.type.06b
-// CHECK:STDOUT:   %Self.2 => constants.%Self.d36
+// CHECK:STDOUT:   %Self.loc4_31.2 => constants.%Self.d36
 // CHECK:STDOUT:   %Interface.assoc_type => constants.%Interface.assoc_type.e9d
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.39b
 // CHECK:STDOUT: }
@@ -525,7 +525,7 @@ fn AccessMissingConcrete(I:! Interface(i32)) -> i32 {
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Interface.type => constants.%Interface.type.02f
-// CHECK:STDOUT:   %Self.2 => constants.%Self.1f1
+// CHECK:STDOUT:   %Self.loc4_31.2 => constants.%Self.1f1
 // CHECK:STDOUT:   %Interface.assoc_type => constants.%Interface.assoc_type.aaa
 // CHECK:STDOUT:   %assoc0 => constants.%assoc0.c50
 // CHECK:STDOUT: }

toolchain/check/testdata/interface/require.carbon

@@ -185,7 +185,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Z {
 // CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}.loc8_13
 // CHECK:STDOUT:   witness = invalid
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -196,7 +196,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Z {
 // CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}.loc8_13
 // CHECK:STDOUT:   witness = invalid
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -207,7 +207,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Z {
 // CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}.loc8_13
 // CHECK:STDOUT:   witness = invalid
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -218,7 +218,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Z {
 // CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}.loc6_13
 // CHECK:STDOUT:   witness = invalid
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -233,7 +233,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:     .Self = <unexpected>.inst{{[0-9A-F]+}}.loc6_23
 // CHECK:STDOUT:     witness = invalid
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -253,7 +253,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:     .Self = <unexpected>.inst{{[0-9A-F]+}}.loc6_23
 // CHECK:STDOUT:     witness = invalid
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -269,7 +269,7 @@ fn F(T:! Z) {
 // CHECK:STDOUT:
 // CHECK:STDOUT: interface @Z {
 // CHECK:STDOUT: !members:
-// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}
+// CHECK:STDOUT:   .Self = <unexpected>.inst{{[0-9A-F]+}}.loc8_13
 // CHECK:STDOUT:   witness = invalid
 // CHECK:STDOUT: }
 // CHECK:STDOUT:

toolchain/check/testdata/interface/syntactic_merge.carbon

@@ -263,13 +263,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo, @Foo(%a.loc7_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1d4)]
+// CHECK:STDOUT:   %Self.loc8_22.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc8_22.2 (constants.%Self.1d4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1d4)]
+// CHECK:STDOUT:     %Self.loc8_22.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc8_22.2 (constants.%Self.1d4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc8_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -279,13 +279,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Bar.type: type = facet_type <@Bar, @Bar(%a.loc10_15.1)> [symbolic = %Bar.type (constants.%Bar.type.3d8)]
-// CHECK:STDOUT:   %Self.2: @Bar.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.3a7)]
+// CHECK:STDOUT:   %Self.loc11_22.2: @Bar.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.loc11_22.2 (constants.%Self.3a7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Bar.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.3a7)]
+// CHECK:STDOUT:     %Self.loc11_22.1: @Bar.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.loc11_22.2 (constants.%Self.3a7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc11_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -353,13 +353,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo, @Foo(%a.loc6_21.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc7_24.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc7_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc7_24.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc7_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc7_24.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -431,13 +431,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc14, @Foo.loc14(%a.loc14_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc14.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc14_24.2: @Foo.loc14.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc14_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc14.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc14_24.1: @Foo.loc14.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc14_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc14_24.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -505,13 +505,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo, @Foo(%a.loc6_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc7_24.2: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc7_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc7_24.1: @Foo.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc7_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc7_24.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -677,13 +677,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc12, @Foo.loc12(%a.loc12_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc12.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1d4)]
+// CHECK:STDOUT:   %Self.loc12_22.2: @Foo.loc12.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc12_22.2 (constants.%Self.1d4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc12.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.1d4)]
+// CHECK:STDOUT:     %Self.loc12_22.1: @Foo.loc12.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc12_22.2 (constants.%Self.1d4)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc12_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -699,13 +699,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Bar.type: type = facet_type <@Bar.loc21, @Bar.loc21(%a.loc21_15.1)> [symbolic = %Bar.type (constants.%Bar.type.3d8)]
-// CHECK:STDOUT:   %Self.2: @Bar.loc21.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.3a7)]
+// CHECK:STDOUT:   %Self.loc21_22.2: @Bar.loc21.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.loc21_22.2 (constants.%Self.3a7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Bar.loc21.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.3a7)]
+// CHECK:STDOUT:     %Self.loc21_22.1: @Bar.loc21.%Bar.type (%Bar.type.3d8) = symbolic_binding Self, 1 [symbolic = %Self.loc21_22.2 (constants.%Self.3a7)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc21_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -792,13 +792,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc15, @Foo.loc15(%b.loc15_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc15_22.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc15_22.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -877,13 +877,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc15, @Foo.loc15(%a.loc15_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc15_22.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc15_22.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -962,13 +962,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc15, @Foo.loc15(%a.loc15_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc15_24.2: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc15_24.1: @Foo.loc15.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc15_24.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc15_24.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -1096,13 +1096,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc17, @Foo.loc17(%a.loc17_15.1)> [symbolic = %Foo.type (constants.%Foo.type.354)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc17.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc17_22.2: @Foo.loc17.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc17_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc17.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc17_22.1: @Foo.loc17.%Foo.type (%Foo.type.354) = symbolic_binding Self, 1 [symbolic = %Self.loc17_22.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc17_22.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
@@ -1180,13 +1180,13 @@ interface Foo(a:! const (const C)) {}
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %Foo.type: type = facet_type <@Foo.loc18, @Foo.loc18(%a.loc18_15.1)> [symbolic = %Foo.type (constants.%Foo.type.2e2)]
-// CHECK:STDOUT:   %Self.2: @Foo.loc18.%Foo.type (%Foo.type.2e2) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc18_36.2: @Foo.loc18.%Foo.type (%Foo.type.2e2) = symbolic_binding Self, 1 [symbolic = %Self.loc18_36.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @Foo.loc18.%Foo.type (%Foo.type.2e2) = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc18_36.1: @Foo.loc18.%Foo.type (%Foo.type.2e2) = symbolic_binding Self, 1 [symbolic = %Self.loc18_36.2 (constants.%Self)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc18_36.1
 // CHECK:STDOUT:     witness = ()
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }

toolchain/check/testdata/named_constraint/empty_generic.carbon

@@ -37,6 +37,7 @@ fn G(T:! Z, U:! type, V:! Empty(T)) {
 // CHECK:STDOUT:   %Empty.type: type = generic_named_constaint_type @Empty [concrete]
 // CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
 // CHECK:STDOUT:   %empty_struct: %Empty.type = struct_value () [concrete]
+// CHECK:STDOUT:   %Self.aa1: %type = symbolic_binding Self, 1 [symbolic]
 // CHECK:STDOUT:   %U.d9f: type = symbolic_binding U, 0 [symbolic]
 // CHECK:STDOUT:   %T.aa1: %type = symbolic_binding T, 1 [symbolic]
 // CHECK:STDOUT:   %pattern_type.e25: type = pattern_type %type [concrete]
@@ -110,13 +111,13 @@ fn G(T:! Z, U:! type, V:! Empty(T)) {
 // CHECK:STDOUT:   %T.loc16_18.1: type = symbolic_binding T, 0 [symbolic = %T.loc16_18.1 (constants.%T.d9f)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %Self.loc16_28.2: %type = symbolic_binding Self, 1 [symbolic = %Self.loc16_28.2 (constants.%Self.aa1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   constraint {
-// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %Self.loc16_28.1: %type = symbolic_binding Self, 1 [symbolic = %Self.loc16_28.2 (constants.%Self.aa1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc16_28.1
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:

toolchain/check/testdata/named_constraint/generic.carbon

@@ -146,13 +146,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:   %T.loc4_24.1: type = symbolic_binding T, 0 [symbolic = %T.loc4_24.1 (constants.%T)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %Self.2: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.1)]
+// CHECK:STDOUT:   %Self.loc4_34.2: %type = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.aa1546.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   constraint {
-// CHECK:STDOUT:     %Self.1: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.1)]
+// CHECK:STDOUT:     %Self.loc4_34.1: %type = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.aa1546.1)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_34.1
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -160,13 +160,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:   %U.loc7_21.1: %Z.type = symbolic_binding U, 0 [symbolic = %U.loc7_21.1 (constants.%U)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %Self.2: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.2)]
+// CHECK:STDOUT:   %Self.loc7_28.2: %type = symbolic_binding Self, 1 [symbolic = %Self.loc7_28.2 (constants.%Self.aa1546.2)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   constraint {
-// CHECK:STDOUT:     %Self.1: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.2)]
+// CHECK:STDOUT:     %Self.loc7_28.1: %type = symbolic_binding Self, 1 [symbolic = %Self.loc7_28.2 (constants.%Self.aa1546.2)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc7_28.1
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -174,13 +174,13 @@ fn F(T:! Generic((), ())) {}
 // CHECK:STDOUT:   %T.loc9_35.1: type = symbolic_binding T, 0 [symbolic = %T.loc9_35.1 (constants.%T)]
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
-// CHECK:STDOUT:   %Self.2: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.3)]
+// CHECK:STDOUT:   %Self.loc10_45.2: %type = symbolic_binding Self, 1 [symbolic = %Self.loc10_45.2 (constants.%Self.aa1546.3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   constraint {
-// CHECK:STDOUT:     %Self.1: %type = symbolic_binding Self, 1 [symbolic = %Self.2 (constants.%Self.aa1546.3)]
+// CHECK:STDOUT:     %Self.loc10_45.1: %type = symbolic_binding Self, 1 [symbolic = %Self.loc10_45.2 (constants.%Self.aa1546.3)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc10_45.1
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:

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

@@ -205,14 +205,14 @@ fn F() { ()[()]; }
 // CHECK:STDOUT:
 // CHECK:STDOUT: !definition:
 // CHECK:STDOUT:   %IndexWith.type: type = facet_type <@IndexWith, @IndexWith(%SubscriptType.loc4_21.1, %ElementType.loc4_43.1)> [symbolic = %IndexWith.type (constants.%IndexWith.type.c35)]
-// CHECK:STDOUT:   %Self.2: @IndexWith.%IndexWith.type (%IndexWith.type.c35) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:   %Self.loc4_63.2: @IndexWith.%IndexWith.type (%IndexWith.type.c35) = symbolic_binding Self, 2 [symbolic = %Self.loc4_63.2 (constants.%Self)]
 // CHECK:STDOUT:   %IndexWith.At.type: type = fn_type @IndexWith.At, @IndexWith(%SubscriptType.loc4_21.1, %ElementType.loc4_43.1) [symbolic = %IndexWith.At.type (constants.%IndexWith.At.type)]
 // CHECK:STDOUT:   %IndexWith.At: @IndexWith.%IndexWith.At.type (%IndexWith.At.type) = struct_value () [symbolic = %IndexWith.At (constants.%IndexWith.At)]
 // CHECK:STDOUT:   %IndexWith.assoc_type: type = assoc_entity_type @IndexWith, @IndexWith(%SubscriptType.loc4_21.1, %ElementType.loc4_43.1) [symbolic = %IndexWith.assoc_type (constants.%IndexWith.assoc_type)]
 // CHECK:STDOUT:   %assoc0.loc5_61.2: @IndexWith.%IndexWith.assoc_type (%IndexWith.assoc_type) = assoc_entity element0, %IndexWith.At.decl [symbolic = %assoc0.loc5_61.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   interface {
-// CHECK:STDOUT:     %Self.1: @IndexWith.%IndexWith.type (%IndexWith.type.c35) = symbolic_binding Self, 2 [symbolic = %Self.2 (constants.%Self)]
+// CHECK:STDOUT:     %Self.loc4_63.1: @IndexWith.%IndexWith.type (%IndexWith.type.c35) = symbolic_binding Self, 2 [symbolic = %Self.loc4_63.2 (constants.%Self)]
 // CHECK:STDOUT:     %IndexWith.At.decl: @IndexWith.%IndexWith.At.type (%IndexWith.At.type) = fn_decl @IndexWith.At [symbolic = @IndexWith.%IndexWith.At (constants.%IndexWith.At)] {
 // CHECK:STDOUT:       %self.patt: @IndexWith.At.%pattern_type.loc5_9 (%pattern_type.c2e) = value_binding_pattern self [concrete]
 // CHECK:STDOUT:       %self.param_patt: @IndexWith.At.%pattern_type.loc5_9 (%pattern_type.c2e) = value_param_pattern %self.patt, call_param0 [concrete]
@@ -224,7 +224,7 @@ fn F() { ()[()]; }
 // CHECK:STDOUT:       %ElementType.ref: type = name_ref ElementType, @IndexWith.%ElementType.loc4_43.2 [symbolic = %ElementType (constants.%ElementType)]
 // CHECK:STDOUT:       %self.param: @IndexWith.At.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
 // CHECK:STDOUT:       %.loc5_15.1: type = splice_block %.loc5_15.3 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
-// CHECK:STDOUT:         %.loc5_15.2: @IndexWith.At.%IndexWith.type (%IndexWith.type.c35) = specific_constant @IndexWith.%Self.1, @IndexWith(constants.%SubscriptType, constants.%ElementType) [symbolic = %Self (constants.%Self)]
+// CHECK:STDOUT:         %.loc5_15.2: @IndexWith.At.%IndexWith.type (%IndexWith.type.c35) = specific_constant @IndexWith.%Self.loc4_63.1, @IndexWith(constants.%SubscriptType, constants.%ElementType) [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.ref: @IndexWith.At.%IndexWith.type (%IndexWith.type.c35) = name_ref Self, %.loc5_15.2 [symbolic = %Self (constants.%Self)]
 // CHECK:STDOUT:         %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
 // CHECK:STDOUT:         %.loc5_15.3: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
@@ -239,7 +239,7 @@ fn F() { ()[()]; }
 // CHECK:STDOUT:     %assoc0.loc5_61.1: @IndexWith.%IndexWith.assoc_type (%IndexWith.assoc_type) = assoc_entity element0, %IndexWith.At.decl [symbolic = %assoc0.loc5_61.2 (constants.%assoc0)]
 // CHECK:STDOUT:
 // CHECK:STDOUT:   !members:
-// CHECK:STDOUT:     .Self = %Self.1
+// CHECK:STDOUT:     .Self = %Self.loc4_63.1
 // CHECK:STDOUT:     .SubscriptType = <poisoned>
 // CHECK:STDOUT:     .ElementType = <poisoned>
 // CHECK:STDOUT:     .At = %assoc0.loc5_61.1
@@ -247,7 +247,7 @@ fn F() { ()[()]; }
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
-// CHECK:STDOUT: generic fn @IndexWith.At(@IndexWith.%SubscriptType.loc4_21.2: type, @IndexWith.%ElementType.loc4_43.2: type, @IndexWith.%Self.1: @IndexWith.%IndexWith.type (%IndexWith.type.c35)) {
+// CHECK:STDOUT: generic fn @IndexWith.At(@IndexWith.%SubscriptType.loc4_21.2: type, @IndexWith.%ElementType.loc4_43.2: type, @IndexWith.%Self.loc4_63.1: @IndexWith.%IndexWith.type (%IndexWith.type.c35)) {
 // CHECK:STDOUT:   %SubscriptType: type = symbolic_binding SubscriptType, 0 [symbolic = %SubscriptType (constants.%SubscriptType)]
 // CHECK:STDOUT:   %ElementType: type = symbolic_binding ElementType, 1 [symbolic = %ElementType (constants.%ElementType)]
 // CHECK:STDOUT:   %IndexWith.type: type = facet_type <@IndexWith, @IndexWith(%SubscriptType, %ElementType)> [symbolic = %IndexWith.type (constants.%IndexWith.type.c35)]
@@ -318,12 +318,12 @@ fn F() { ()[()]; }
 // CHECK:STDOUT:   %Core.IndexWith: %IndexWith.type.504 = import_ref Core//core_wrong_arg_count, IndexWith, loaded [concrete = constants.%IndexWith.generic]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.1: type = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, loaded [symbolic = @IndexWith.%SubscriptType (constants.%SubscriptType)]
 // CHECK:STDOUT:   %Core.import_ref.c5c78a.1: type = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, loaded [symbolic = @IndexWith.%ElementType (constants.%ElementType)]
-// CHECK:STDOUT:   %Core.import_ref.05e = import_ref Core//core_wrong_arg_count, inst{{[0-9A-F]+}} [no loc], unloaded
+// CHECK:STDOUT:   %Core.import_ref.05e = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.import_ref.1bb = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT:   %Core.At: @IndexWith.%IndexWith.At.type (%IndexWith.At.type.755) = import_ref Core//core_wrong_arg_count, At, loaded [symbolic = @IndexWith.%IndexWith.At (constants.%IndexWith.At.f92)]
 // CHECK:STDOUT:   %Core.import_ref.efcd44.2: type = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, loaded [symbolic = @IndexWith.%SubscriptType (constants.%SubscriptType)]
 // CHECK:STDOUT:   %Core.import_ref.c5c78a.2: type = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, loaded [symbolic = @IndexWith.%ElementType (constants.%ElementType)]
-// CHECK:STDOUT:   %Core.import_ref.c11: @IndexWith.%IndexWith.type (%IndexWith.type.b02) = import_ref Core//core_wrong_arg_count, inst{{[0-9A-F]+}} [no loc], loaded [symbolic = @IndexWith.%Self (constants.%Self.a98)]
+// CHECK:STDOUT:   %Core.import_ref.c11: @IndexWith.%IndexWith.type (%IndexWith.type.b02) = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, loaded [symbolic = @IndexWith.%Self (constants.%Self.a98)]
 // CHECK:STDOUT:   %Core.import_ref.118 = import_ref Core//core_wrong_arg_count, loc{{\d+_\d+}}, unloaded
 // CHECK:STDOUT: }
 // CHECK:STDOUT: