carbon-lang/toolchain/check/testdata/class/indirect_import_member.carbon

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/indirect_import_member.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/indirect_import_member.carbon

// ============================================================================
// Setup files
// ============================================================================

// --- a.carbon

library "[[@TEST_NAME]]";

class C {
  fn F() {}
}

// --- b.carbon

library "[[@TEST_NAME]]";

export import library "a";

// --- c.carbon

library "[[@TEST_NAME]]";

import library "b";

export C;

// --- d.carbon

library "[[@TEST_NAME]]";

export import library "c";

// --- e.carbon

library "[[@TEST_NAME]]";

import library "c";

class D {
  alias C = package.C;
}

// --- f.carbon

library "[[@TEST_NAME]]";

export import library "e";

// ============================================================================
// Test files
// ============================================================================

// --- use_b.carbon

library "[[@TEST_NAME]]";

import library "b";

var x: () = C.F();

// --- use_c.carbon

library "[[@TEST_NAME]]";

import library "c";

var x: () = C.F();

// --- use_d.carbon

library "[[@TEST_NAME]]";

import library "d";

var x: () = C.F();

// --- use_e.carbon

library "[[@TEST_NAME]]";

import library "e";

var x: () = D.C.F();

// --- use_f.carbon

library "[[@TEST_NAME]]";

import library "f";

var x: () = D.C.F();

// CHECK:STDOUT: --- a.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = %C.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT:   %C.F.decl: %C.F.type = fn_decl @C.F [concrete = constants.%C.F] {} {}
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete = constants.%empty_struct_type]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT:   complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = constants.%C
// CHECK:STDOUT:   .F = %C.F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- b.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C = import_ref Main//a, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- c.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C: type = import_ref Main//a, C, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//a, loc6_1, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.2c4 = import_ref Main//a, inst17 [no loc], unloaded
// CHECK:STDOUT:   %Main.import_ref.2cf = import_ref Main//a, loc5_10, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = %C
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   %C: type = export C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "a.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.2c4
// CHECK:STDOUT:   .F = imports.%Main.import_ref.2cf
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- d.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C = import_ref Main//c, C, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- e.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %D: type = class_type @D [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C: type = import_ref Main//c, C, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8db: <witness> = import_ref Main//c, inst22 [indirect], loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.6a9 = import_ref Main//c, inst23 [indirect], unloaded
// CHECK:STDOUT:   %Main.import_ref.230 = import_ref Main//c, inst24 [indirect], unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:     .D = %D.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   %D.decl: type = class_decl @D [concrete = constants.%D] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @D {
// CHECK:STDOUT:   %package.ref: <namespace> = name_ref package, package [concrete = package]
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT:   %C: type = bind_alias C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete = constants.%empty_struct_type]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT:   complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = constants.%D
// CHECK:STDOUT:   .C = %C
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "c.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8db
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.6a9
// CHECK:STDOUT:   .F = imports.%Main.import_ref.230
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- f.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.D = import_ref Main//e, D, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .D = imports.%Main.D
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- use_b.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C: type = import_ref Main//a, C, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//a, loc6_1, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.2c4 = import_ref Main//a, inst17 [no loc], unloaded
// CHECK:STDOUT:   %Main.import_ref.943: %C.F.type = import_ref Main//a, loc5_10, loaded [concrete = constants.%C.F]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:     .x = %x
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %x.patt: %pattern_type = binding_pattern x [concrete]
// CHECK:STDOUT:     %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x.var: ref %empty_tuple.type = var %x.var_patt [concrete]
// CHECK:STDOUT:   %.loc6_9.1: type = splice_block %.loc6_9.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT:     %.loc6_9.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT:     %.loc6_9.3: type = converted %.loc6_9.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x: ref %empty_tuple.type = bind_name x, %x.var [concrete = %x.var]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "a.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.2c4
// CHECK:STDOUT:   .F = imports.%Main.import_ref.943
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT:   %F.ref: %C.F.type = name_ref F, imports.%Main.import_ref.943 [concrete = constants.%C.F]
// CHECK:STDOUT:   %C.F.call: init %empty_tuple.type = call %F.ref()
// CHECK:STDOUT:   assign file.%x.var, %C.F.call
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- use_c.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C: type = import_ref Main//c, C, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8db: <witness> = import_ref Main//c, inst22 [indirect], loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.6a9 = import_ref Main//c, inst23 [indirect], unloaded
// CHECK:STDOUT:   %Main.import_ref.5d3: %C.F.type = import_ref Main//c, inst24 [indirect], loaded [concrete = constants.%C.F]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:     .x = %x
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %x.patt: %pattern_type = binding_pattern x [concrete]
// CHECK:STDOUT:     %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x.var: ref %empty_tuple.type = var %x.var_patt [concrete]
// CHECK:STDOUT:   %.loc6_9.1: type = splice_block %.loc6_9.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT:     %.loc6_9.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT:     %.loc6_9.3: type = converted %.loc6_9.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x: ref %empty_tuple.type = bind_name x, %x.var [concrete = %x.var]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "c.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8db
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.6a9
// CHECK:STDOUT:   .F = imports.%Main.import_ref.5d3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT:   %F.ref: %C.F.type = name_ref F, imports.%Main.import_ref.5d3 [concrete = constants.%C.F]
// CHECK:STDOUT:   %C.F.call: init %empty_tuple.type = call %F.ref()
// CHECK:STDOUT:   assign file.%x.var, %C.F.call
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- use_d.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.C: type = import_ref Main//c, C, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8db: <witness> = import_ref Main//c, inst22 [indirect], loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.6a9 = import_ref Main//c, inst23 [indirect], unloaded
// CHECK:STDOUT:   %Main.import_ref.5d3: %C.F.type = import_ref Main//c, inst24 [indirect], loaded [concrete = constants.%C.F]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .C = imports.%Main.C
// CHECK:STDOUT:     .x = %x
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %x.patt: %pattern_type = binding_pattern x [concrete]
// CHECK:STDOUT:     %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x.var: ref %empty_tuple.type = var %x.var_patt [concrete]
// CHECK:STDOUT:   %.loc6_9.1: type = splice_block %.loc6_9.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT:     %.loc6_9.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT:     %.loc6_9.3: type = converted %.loc6_9.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x: ref %empty_tuple.type = bind_name x, %x.var [concrete = %x.var]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "c.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8db
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.6a9
// CHECK:STDOUT:   .F = imports.%Main.import_ref.5d3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.C [concrete = constants.%C]
// CHECK:STDOUT:   %F.ref: %C.F.type = name_ref F, imports.%Main.import_ref.5d3 [concrete = constants.%C.F]
// CHECK:STDOUT:   %C.F.call: init %empty_tuple.type = call %F.ref()
// CHECK:STDOUT:   assign file.%x.var, %C.F.call
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- use_e.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %D: type = class_type @D [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.D: type = import_ref Main//e, D, loaded [concrete = constants.%D]
// CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//e, loc8_1, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.cab = import_ref Main//e, inst19 [no loc], unloaded
// CHECK:STDOUT:   %Main.import_ref.bf1: type = import_ref Main//e, loc7_9, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8f3: <witness> = import_ref Main//e, inst25 [indirect], loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.db8 = import_ref Main//e, inst26 [indirect], unloaded
// CHECK:STDOUT:   %Main.import_ref.c85: %C.F.type = import_ref Main//e, inst27 [indirect], loaded [concrete = constants.%C.F]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .D = imports.%Main.D
// CHECK:STDOUT:     .x = %x
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %x.patt: %pattern_type = binding_pattern x [concrete]
// CHECK:STDOUT:     %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x.var: ref %empty_tuple.type = var %x.var_patt [concrete]
// CHECK:STDOUT:   %.loc6_9.1: type = splice_block %.loc6_9.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT:     %.loc6_9.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT:     %.loc6_9.3: type = converted %.loc6_9.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x: ref %empty_tuple.type = bind_name x, %x.var [concrete = %x.var]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @D [from "e.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.cab
// CHECK:STDOUT:   .C = imports.%Main.import_ref.bf1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "e.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f3
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.db8
// CHECK:STDOUT:   .F = imports.%Main.import_ref.c85
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %D.ref: type = name_ref D, imports.%Main.D [concrete = constants.%D]
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.import_ref.bf1 [concrete = constants.%C]
// CHECK:STDOUT:   %F.ref: %C.F.type = name_ref F, imports.%Main.import_ref.c85 [concrete = constants.%C.F]
// CHECK:STDOUT:   %C.F.call: init %empty_tuple.type = call %F.ref()
// CHECK:STDOUT:   assign file.%x.var, %C.F.call
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- use_f.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %D: type = class_type @D [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %C.F.type: type = fn_type @C.F [concrete]
// CHECK:STDOUT:   %C.F: %C.F.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Main.D: type = import_ref Main//e, D, loaded [concrete = constants.%D]
// CHECK:STDOUT:   %Main.import_ref.8f2: <witness> = import_ref Main//e, loc8_1, loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.cab = import_ref Main//e, inst19 [no loc], unloaded
// CHECK:STDOUT:   %Main.import_ref.bf1: type = import_ref Main//e, loc7_9, loaded [concrete = constants.%C]
// CHECK:STDOUT:   %Main.import_ref.8f3: <witness> = import_ref Main//e, inst25 [indirect], loaded [concrete = constants.%complete_type]
// CHECK:STDOUT:   %Main.import_ref.db8 = import_ref Main//e, inst26 [indirect], unloaded
// CHECK:STDOUT:   %Main.import_ref.c85: %C.F.type = import_ref Main//e, inst27 [indirect], loaded [concrete = constants.%C.F]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .D = imports.%Main.D
// CHECK:STDOUT:     .x = %x
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %default.import = import <none>
// CHECK:STDOUT:   name_binding_decl {
// CHECK:STDOUT:     %x.patt: %pattern_type = binding_pattern x [concrete]
// CHECK:STDOUT:     %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x.var: ref %empty_tuple.type = var %x.var_patt [concrete]
// CHECK:STDOUT:   %.loc6_9.1: type = splice_block %.loc6_9.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT:     %.loc6_9.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT:     %.loc6_9.3: type = converted %.loc6_9.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %x: ref %empty_tuple.type = bind_name x, %x.var [concrete = %x.var]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @D [from "e.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f2
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.cab
// CHECK:STDOUT:   .C = imports.%Main.import_ref.bf1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C [from "e.carbon"] {
// CHECK:STDOUT:   complete_type_witness = imports.%Main.import_ref.8f3
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = imports.%Main.import_ref.db8
// CHECK:STDOUT:   .F = imports.%Main.import_ref.c85
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.F [from "a.carbon"];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %D.ref: type = name_ref D, imports.%Main.D [concrete = constants.%D]
// CHECK:STDOUT:   %C.ref: type = name_ref C, imports.%Main.import_ref.bf1 [concrete = constants.%C]
// CHECK:STDOUT:   %F.ref: %C.F.type = name_ref F, imports.%Main.import_ref.c85 [concrete = constants.%C.F]
// CHECK:STDOUT:   %C.F.call: init %empty_tuple.type = call %F.ref()
// CHECK:STDOUT:   assign file.%x.var, %C.F.call
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT: