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be56ff87c659b080b43c710667c2d6cb6917e105
carbon-lang/toolchain/check/testdata/function/definition/import.carbon
T
Jon Ross-Perkins be56ff87c6 Convert StructTypeField to a specific type. (#4492) 
This converts `StructTypeField` from an instruction to a dedicated type,
with its own store. This had originated from discussing how
`.GetAs<SemIR::StructTypeField>` was more prevalent than for other
instructions, but is probably more interesting for the storage savings
(16 bytes StructTypeField + 4 byte LocId + 4 byte InstId -> 8 byte
StructTypeField).

Due to the different structure, these now have their own stack during
construction, reducing (but not eliminating) `args_type_info_stack_`
use-cases.

The test changes of different InstIds is expected because structs and
classes generate fewer instructions now. Other than that, results should
remain the same.

I'm generally trying to avoid unrelated cleanup here due to the PR size,
though I did scrutinize the `VerifyOnFinish` calls, adding one and
commenting others (putting them in member order because that's how I was
checking what was verified and what wasn't).
2024-11-06 21:38:27 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/function/definition/import.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/definition/import.carbon
// ============================================================================
// Setup files
// ============================================================================
// --- fns.carbon
library "[[@TEST_NAME]]";
fn A() {}
fn B(b: i32) -> i32 { return b; }
fn C(c: (i32,)) -> {.c: i32} { return {.c = c.0}; }
fn D();
// --- extern.carbon
library "[[@TEST_NAME]]";
extern fn A();
// ============================================================================
// Test files
// ============================================================================
// --- basics.carbon
library "[[@TEST_NAME]]";
import library "fns";
var a: () = A();
var b: i32 = B(1);
var c: {.c: i32} = C((1,));
// --- fail_def_ownership.carbon
library "[[@TEST_NAME]]";
import library "fns";
// CHECK:STDERR: fail_def_ownership.carbon:[[@LINE+8]]:1: error: redeclaration of `fn A` is redundant [RedeclRedundant]
// CHECK:STDERR: fn A() {};
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_def_ownership.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: fns.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: fn A() {}
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
fn A() {};
// CHECK:STDERR: fail_def_ownership.carbon:[[@LINE+8]]:1: error: redeclaration of `fn B` is redundant [RedeclRedundant]
// CHECK:STDERR: fn B(b: i32) -> i32;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_def_ownership.carbon:[[@LINE-14]]:1: in import [InImport]
// CHECK:STDERR: fns.carbon:5:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: fn B(b: i32) -> i32 { return b; }
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
fn B(b: i32) -> i32;
// --- fail_redecl_then_def.carbon
library "[[@TEST_NAME]]";
import library "extern";
// CHECK:STDERR: fail_redecl_then_def.carbon:[[@LINE+8]]:1: error: redeclarations of `fn A` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: fn A();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_redecl_then_def.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: extern.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern fn A();
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR:
fn A();
// CHECK:STDERR: fail_redecl_then_def.carbon:[[@LINE+8]]:1: error: redeclarations of `fn A` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: fn A() {}
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_redecl_then_def.carbon:[[@LINE-15]]:1: in import [InImport]
// CHECK:STDERR: extern.carbon:4:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: extern fn A();
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR:
fn A() {}
// --- fail_mix_extern_decl.carbon
library "[[@TEST_NAME]]";
import library "fns";
// CHECK:STDERR: fail_mix_extern_decl.carbon:[[@LINE+7]]:1: error: redeclarations of `fn D` must match use of `extern` [RedeclExternMismatch]
// CHECK:STDERR: extern fn D();
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR: fail_mix_extern_decl.carbon:[[@LINE-5]]:1: in import [InImport]
// CHECK:STDERR: fns.carbon:7:1: note: previously declared here [RedeclPrevDecl]
// CHECK:STDERR: fn D();
// CHECK:STDERR: ^~~~~~~
extern fn D();
fn D() {}
// CHECK:STDOUT: --- fns.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %A.type: type = fn_type @A [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %A: %A.type = struct_value () [template]
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %B.type: type = fn_type @B [template]
// CHECK:STDOUT: %B: %B.type = struct_value () [template]
// CHECK:STDOUT: %.2: type = tuple_type (type) [template]
// CHECK:STDOUT: %.3: type = tuple_type (i32) [template]
// CHECK:STDOUT: %.4: type = struct_type {.c: i32} [template]
// CHECK:STDOUT: %C.type: type = fn_type @C [template]
// CHECK:STDOUT: %C: %C.type = struct_value () [template]
// CHECK:STDOUT: %.5: i32 = int_value 0 [template]
// CHECK:STDOUT: %D.type: type = fn_type @D [template]
// CHECK:STDOUT: %D: %D.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .A = %A.decl
// CHECK:STDOUT: .B = %B.decl
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .D = %D.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %A.decl: %A.type = fn_decl @A [template = constants.%A] {} {}
// CHECK:STDOUT: %B.decl: %B.type = fn_decl @B [template = constants.%B] {
// CHECK:STDOUT: %b.patt: i32 = binding_pattern b
// CHECK:STDOUT: %b.param_patt: i32 = value_param_pattern %b.patt, runtime_param0
// CHECK:STDOUT: %return.patt: i32 = return_slot_pattern
// CHECK:STDOUT: %return.param_patt: i32 = out_param_pattern %return.patt, runtime_param1
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int.make_type_32.loc5_9: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc5_9.1: type = value_of_initializer %int.make_type_32.loc5_9 [template = i32]
// CHECK:STDOUT: %.loc5_9.2: type = converted %int.make_type_32.loc5_9, %.loc5_9.1 [template = i32]
// CHECK:STDOUT: %int.make_type_32.loc5_17: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc5_17.1: type = value_of_initializer %int.make_type_32.loc5_17 [template = i32]
// CHECK:STDOUT: %.loc5_17.2: type = converted %int.make_type_32.loc5_17, %.loc5_17.1 [template = i32]
// CHECK:STDOUT: %b.param: i32 = value_param runtime_param0
// CHECK:STDOUT: %b: i32 = bind_name b, %b.param
// CHECK:STDOUT: %return.param: ref i32 = out_param runtime_param1
// CHECK:STDOUT: %return: ref i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: %C.type = fn_decl @C [template = constants.%C] {
// CHECK:STDOUT: %c.patt: %.3 = binding_pattern c
// CHECK:STDOUT: %c.param_patt: %.3 = value_param_pattern %c.patt, runtime_param0
// CHECK:STDOUT: %return.patt: %.4 = return_slot_pattern
// CHECK:STDOUT: %return.param_patt: %.4 = out_param_pattern %return.patt, runtime_param1
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int.make_type_32.loc6_10: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc6_14.1: %.2 = tuple_literal (%int.make_type_32.loc6_10)
// CHECK:STDOUT: %.loc6_14.2: type = value_of_initializer %int.make_type_32.loc6_10 [template = i32]
// CHECK:STDOUT: %.loc6_14.3: type = converted %int.make_type_32.loc6_10, %.loc6_14.2 [template = i32]
// CHECK:STDOUT: %.loc6_14.4: type = converted %.loc6_14.1, constants.%.3 [template = constants.%.3]
// CHECK:STDOUT: %int.make_type_32.loc6_25: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc6_25.1: type = value_of_initializer %int.make_type_32.loc6_25 [template = i32]
// CHECK:STDOUT: %.loc6_25.2: type = converted %int.make_type_32.loc6_25, %.loc6_25.1 [template = i32]
// CHECK:STDOUT: %.loc6_28: type = struct_type {.c: i32} [template = constants.%.4]
// CHECK:STDOUT: %c.param: %.3 = value_param runtime_param0
// CHECK:STDOUT: %c: %.3 = bind_name c, %c.param
// CHECK:STDOUT: %return.param: ref %.4 = out_param runtime_param1
// CHECK:STDOUT: %return: ref %.4 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %D.decl: %D.type = fn_decl @D [template = constants.%D] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B(%b.param_patt: i32) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %b.ref: i32 = name_ref b, %b
// CHECK:STDOUT: return %b.ref
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C(%c.param_patt: %.3) -> %.4 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %c.ref: %.3 = name_ref c, %c
// CHECK:STDOUT: %.loc6_47: i32 = int_value 0 [template = constants.%.5]
// CHECK:STDOUT: %.loc6_46: i32 = tuple_access %c.ref, element0
// CHECK:STDOUT: %.loc6_48: %.4 = struct_literal (%.loc6_46)
// CHECK:STDOUT: %struct: %.4 = struct_value (%.loc6_46)
// CHECK:STDOUT: %.loc6_49: %.4 = converted %.loc6_48, %struct
// CHECK:STDOUT: return %.loc6_49
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @D();
// CHECK:STDOUT:
// CHECK:STDOUT: --- extern.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %A.type: type = fn_type @A [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %A: %A.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .A = %A.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %A.decl: %A.type = fn_decl @A [template = constants.%A] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: extern fn @A();
// CHECK:STDOUT:
// CHECK:STDOUT: --- basics.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %A.type: type = fn_type @A [template]
// CHECK:STDOUT: %A: %A.type = struct_value () [template]
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %B.type: type = fn_type @B [template]
// CHECK:STDOUT: %B: %B.type = struct_value () [template]
// CHECK:STDOUT: %.2: i32 = int_value 1 [template]
// CHECK:STDOUT: %.3: type = struct_type {.c: i32} [template]
// CHECK:STDOUT: %C.type: type = fn_type @C [template]
// CHECK:STDOUT: %C: %C.type = struct_value () [template]
// CHECK:STDOUT: %.4: type = tuple_type (i32) [template]
// CHECK:STDOUT: %tuple: %.4 = tuple_value (%.2) [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %import_ref.1: %A.type = import_ref Main//fns, inst+3, loaded [template = constants.%A]
// CHECK:STDOUT: %import_ref.2: %B.type = import_ref Main//fns, inst+29, loaded [template = constants.%B]
// CHECK:STDOUT: %import_ref.3: %C.type = import_ref Main//fns, inst+54, loaded [template = constants.%C]
// CHECK:STDOUT: %import_ref.4 = import_ref Main//fns, inst+65, unloaded
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref.5
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .A = imports.%import_ref.1
// CHECK:STDOUT: .B = imports.%import_ref.2
// CHECK:STDOUT: .C = imports.%import_ref.3
// CHECK:STDOUT: .D = imports.%import_ref.4
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .a = %a
// CHECK:STDOUT: .b = %b
// CHECK:STDOUT: .c = %c
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %default.import = import <invalid>
// CHECK:STDOUT: %.loc6_9.1: %.1 = tuple_literal ()
// CHECK:STDOUT: %.loc6_9.2: type = converted %.loc6_9.1, constants.%.1 [template = constants.%.1]
// CHECK:STDOUT: %a.var: ref %.1 = var a
// CHECK:STDOUT: %a: ref %.1 = bind_name a, %a.var
// CHECK:STDOUT: %int.make_type_32.loc7: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc7_8.1: type = value_of_initializer %int.make_type_32.loc7 [template = i32]
// CHECK:STDOUT: %.loc7_8.2: type = converted %int.make_type_32.loc7, %.loc7_8.1 [template = i32]
// CHECK:STDOUT: %b.var: ref i32 = var b
// CHECK:STDOUT: %b: ref i32 = bind_name b, %b.var
// CHECK:STDOUT: %int.make_type_32.loc8: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc8_13.1: type = value_of_initializer %int.make_type_32.loc8 [template = i32]
// CHECK:STDOUT: %.loc8_13.2: type = converted %int.make_type_32.loc8, %.loc8_13.1 [template = i32]
// CHECK:STDOUT: %.loc8_16: type = struct_type {.c: i32} [template = constants.%.3]
// CHECK:STDOUT: %c.var: ref %.3 = var c
// CHECK:STDOUT: %c: ref %.3 = bind_name c, %c.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A();
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B(%b.param_patt: i32) -> i32;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C(%c.param_patt: %.4) -> %.3;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %A.ref: %A.type = name_ref A, imports.%import_ref.1 [template = constants.%A]
// CHECK:STDOUT: %A.call: init %.1 = call %A.ref()
// CHECK:STDOUT: assign file.%a.var, %A.call
// CHECK:STDOUT: %B.ref: %B.type = name_ref B, imports.%import_ref.2 [template = constants.%B]
// CHECK:STDOUT: %.loc7: i32 = int_value 1 [template = constants.%.2]
// CHECK:STDOUT: %B.call: init i32 = call %B.ref(%.loc7)
// CHECK:STDOUT: assign file.%b.var, %B.call
// CHECK:STDOUT: %C.ref: %C.type = name_ref C, imports.%import_ref.3 [template = constants.%C]
// CHECK:STDOUT: %.loc8_23: i32 = int_value 1 [template = constants.%.2]
// CHECK:STDOUT: %.loc8_25.1: %.4 = tuple_literal (%.loc8_23)
// CHECK:STDOUT: %tuple: %.4 = tuple_value (%.loc8_23) [template = constants.%tuple]
// CHECK:STDOUT: %.loc8_25.2: %.4 = converted %.loc8_25.1, %tuple [template = constants.%tuple]
// CHECK:STDOUT: %C.call: init %.3 = call %C.ref(%.loc8_25.2)
// CHECK:STDOUT: assign file.%c.var, %C.call
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_def_ownership.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %A.type: type = fn_type @A [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %A: %A.type = struct_value () [template]
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %B.type: type = fn_type @B [template]
// CHECK:STDOUT: %B: %B.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %import_ref.1: %A.type = import_ref Main//fns, inst+3, loaded [template = constants.%A]
// CHECK:STDOUT: %import_ref.2: %B.type = import_ref Main//fns, inst+29, loaded [template = constants.%B]
// CHECK:STDOUT: %import_ref.3 = import_ref Main//fns, inst+54, unloaded
// CHECK:STDOUT: %import_ref.4 = import_ref Main//fns, inst+65, unloaded
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref.5
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .A = %A.decl
// CHECK:STDOUT: .B = %B.decl
// CHECK:STDOUT: .C = imports.%import_ref.3
// CHECK:STDOUT: .D = imports.%import_ref.4
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %default.import = import <invalid>
// CHECK:STDOUT: %A.decl: %A.type = fn_decl @A [template = constants.%A] {} {}
// CHECK:STDOUT: %B.decl: %B.type = fn_decl @B [template = constants.%B] {} {
// CHECK:STDOUT: %int.make_type_32.loc23_9: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc23_9.1: type = value_of_initializer %int.make_type_32.loc23_9 [template = i32]
// CHECK:STDOUT: %.loc23_9.2: type = converted %int.make_type_32.loc23_9, %.loc23_9.1 [template = i32]
// CHECK:STDOUT: %int.make_type_32.loc23_17: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc23_17.1: type = value_of_initializer %int.make_type_32.loc23_17 [template = i32]
// CHECK:STDOUT: %.loc23_17.2: type = converted %int.make_type_32.loc23_17, %.loc23_17.1 [template = i32]
// CHECK:STDOUT: %b.param: i32 = value_param runtime_param0
// CHECK:STDOUT: %b: i32 = bind_name b, %b.param
// CHECK:STDOUT: %return.param: ref i32 = out_param runtime_param1
// CHECK:STDOUT: %.loc23_14: ref i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B(%b.param_patt: i32) -> i32;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_redecl_then_def.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %A.type: type = fn_type @A [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %A: %A.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %import_ref: %A.type = import_ref Main//extern, inst+3, loaded [template = constants.%A]
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .A = %A.decl.loc14
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %default.import = import <invalid>
// CHECK:STDOUT: %A.decl.loc14: %A.type = fn_decl @A [template = constants.%A] {} {}
// CHECK:STDOUT: %A.decl.loc24: %A.type = fn_decl @A [template = constants.%A] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: extern fn @A() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_mix_extern_decl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %D.type: type = fn_type @D [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %D: %D.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %import_ref.1 = import_ref Main//fns, inst+3, unloaded
// CHECK:STDOUT: %import_ref.2 = import_ref Main//fns, inst+29, unloaded
// CHECK:STDOUT: %import_ref.3 = import_ref Main//fns, inst+54, unloaded
// CHECK:STDOUT: %import_ref.4: %D.type = import_ref Main//fns, inst+65, loaded [template = constants.%D]
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .A = imports.%import_ref.1
// CHECK:STDOUT: .B = imports.%import_ref.2
// CHECK:STDOUT: .C = imports.%import_ref.3
// CHECK:STDOUT: .D = %D.decl.loc13
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %default.import = import <invalid>
// CHECK:STDOUT: %D.decl.loc13: %D.type = fn_decl @D [template = constants.%D] {} {}
// CHECK:STDOUT: %D.decl.loc15: %D.type = fn_decl @D [template = constants.%D] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @D() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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