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carbon-lang/toolchain/check/testdata/interop/cpp/globals.carbon
T
Geoff Romer 09710d102f Separate binding insts for refs and values (#6235) 
This resolves a TODO in `expr_info.cpp` by using the inst kind rather
than the bound value to track the binding's category.

Since we're churning all the `bind_name` insts in testdata anyway, I'm
also taking this opportunity to align the inst naming with the design's
terminology, by calling these insts "bindings" (this aspect of the PR is
dependent on #6231 resolving an ambiguity in that terminology). For
consistency we'll need to rename several other insts as well (see the
TODO on `RefBinding`); I'm deferring that to a separate PR to minimize
the review load, but I think those name changes are in-scope for this
review.
2025-10-23 01:46:24 +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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/destroy.carbon
// 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/interop/cpp/globals.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/globals.carbon
// ============================================================================
// Global scope
// ============================================================================
// --- global_scope.h
class C {};
C global;
C* _Nonnull global_ptr = &global;
C& global_ref = global;
// --- import_global_scope.carbon
library "[[@TEST_NAME]]";
import Cpp library "global_scope.h";
fn MyF() {
let local: Cpp.C = Cpp.global;
let local_ptr: Cpp.C* = Cpp.global_ptr;
let local_ref: Cpp.C* = Cpp.global_ref;
}
// ============================================================================
// Namespace
// ============================================================================
// --- namespace.h
namespace N {
class C {};
C global;
} // namespace N
// --- import_namespace.carbon
library "[[@TEST_NAME]]";
import Cpp library "namespace.h";
fn MyF() {
let local: Cpp.N.C = Cpp.N.global;
}
// ============================================================================
// Unsupported global type
// ============================================================================
// --- unsupported_type.h
using UnusupportedType = _BitInt(23);
UnusupportedType global;
// --- fail_import_unsupported_type.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+4]]:10: in file included here [InCppInclude]
// CHECK:STDERR: ./unsupported_type.h:2:7: error: semantics TODO: `Unsupported: Type declaration: UnusupportedType` [SemanticsTodo]
// CHECK:STDERR: using UnusupportedType = _BitInt(23);
// CHECK:STDERR: ^
import Cpp library "unsupported_type.h";
fn MyF() {
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+11]]:14: note: in `Cpp` name lookup for `UnusupportedType` [InCppNameLookup]
// CHECK:STDERR: let local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+7]]:37: error: semantics TODO: `Unsupported: var type: UnusupportedType` [SemanticsTodo]
// CHECK:STDERR: let local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_import_unsupported_type.carbon:[[@LINE+4]]:37: note: in `Cpp` name lookup for `global` [InCppNameLookup]
// CHECK:STDERR: let local: Cpp.UnusupportedType = Cpp.global;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
let local: Cpp.UnusupportedType = Cpp.global;
}
// CHECK:STDOUT: --- import_global_scope.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %MyF.type: type = fn_type @MyF [concrete]
// CHECK:STDOUT: %MyF: %MyF.type = struct_value () [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: %pattern_type.217: type = pattern_type %C [concrete]
// CHECK:STDOUT: %ptr.d9e: type = ptr_type %C [concrete]
// CHECK:STDOUT: %pattern_type.a31: type = pattern_type %ptr.d9e [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .global = %global.var
// CHECK:STDOUT: .global_ptr = %global_ptr.var
// CHECK:STDOUT: .global_ref = %global_ref.var
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %global.var: ref %C = var %global.var_patt [concrete]
// CHECK:STDOUT: %global_ptr.var: ref %ptr.d9e = var %global_ptr.var_patt [concrete]
// CHECK:STDOUT: %global_ref.var: ref %ptr.d9e = var %global_ref.var_patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Cpp = imports.%Cpp
// CHECK:STDOUT: .MyF = %MyF.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
// CHECK:STDOUT: import Cpp "global_scope.h"
// CHECK:STDOUT: }
// CHECK:STDOUT: %MyF.decl: %MyF.type = fn_decl @MyF [concrete = constants.%MyF] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @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: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local.patt: %pattern_type.217 = value_binding_pattern local [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc7_22: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global.ref: ref %C = name_ref global, imports.%global.var [concrete = imports.%global.var]
// CHECK:STDOUT: %.loc7_17: type = splice_block %C.ref.loc7 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc7_14: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc7: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc7_25: %C = bind_value %global.ref
// CHECK:STDOUT: %local: %C = value_binding local, %.loc7_25
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local_ptr.patt: %pattern_type.a31 = value_binding_pattern local_ptr [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc8_27: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global_ptr.ref: ref %ptr.d9e = name_ref global_ptr, imports.%global_ptr.var [concrete = imports.%global_ptr.var]
// CHECK:STDOUT: %.loc8_23: type = splice_block %ptr.loc8 [concrete = constants.%ptr.d9e] {
// CHECK:STDOUT: %Cpp.ref.loc8_18: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc8: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %ptr.loc8: type = ptr_type %C.ref.loc8 [concrete = constants.%ptr.d9e]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc8_30: %ptr.d9e = bind_value %global_ptr.ref
// CHECK:STDOUT: %local_ptr: %ptr.d9e = value_binding local_ptr, %.loc8_30
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local_ref.patt: %pattern_type.a31 = value_binding_pattern local_ref [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc9_27: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global_ref.ref: ref %ptr.d9e = name_ref global_ref, imports.%global_ref.var [concrete = imports.%global_ref.var]
// CHECK:STDOUT: %.loc9_23: type = splice_block %ptr.loc9 [concrete = constants.%ptr.d9e] {
// CHECK:STDOUT: %Cpp.ref.loc9_18: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc9: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %ptr.loc9: type = ptr_type %C.ref.loc9 [concrete = constants.%ptr.d9e]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc9_30: %ptr.d9e = bind_value %global_ref.ref
// CHECK:STDOUT: %local_ref: %ptr.d9e = value_binding local_ref, %.loc9_30
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_namespace.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %MyF.type: type = fn_type @MyF [concrete]
// CHECK:STDOUT: %MyF: %MyF.type = struct_value () [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: %pattern_type: type = pattern_type %C [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .N = %N
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %N: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .global = %global.var
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %global.var: ref %C = var %global.var_patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Cpp = imports.%Cpp
// CHECK:STDOUT: .MyF = %MyF.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
// CHECK:STDOUT: import Cpp "namespace.h"
// CHECK:STDOUT: }
// CHECK:STDOUT: %MyF.decl: %MyF.type = fn_decl @MyF [concrete = constants.%MyF] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @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: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local.patt: %pattern_type = value_binding_pattern local [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc7_24: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %N.ref.loc7_27: <namespace> = name_ref N, imports.%N [concrete = imports.%N]
// CHECK:STDOUT: %global.ref: ref %C = name_ref global, imports.%global.var [concrete = imports.%global.var]
// CHECK:STDOUT: %.loc7_19: type = splice_block %C.ref [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc7_14: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %N.ref.loc7_17: <namespace> = name_ref N, imports.%N [concrete = imports.%N]
// CHECK:STDOUT: %C.ref: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc7_29: %C = bind_value %global.ref
// CHECK:STDOUT: %local: %C = value_binding local, %.loc7_29
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_import_unsupported_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %MyF.type: type = fn_type @MyF [concrete]
// CHECK:STDOUT: %MyF: %MyF.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .UnusupportedType = <error>
// CHECK:STDOUT: .global = <error>
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Cpp = imports.%Cpp
// CHECK:STDOUT: .MyF = %MyF.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
// CHECK:STDOUT: import Cpp "unsupported_type.h"
// CHECK:STDOUT: }
// CHECK:STDOUT: %MyF.decl: %MyF.type = fn_decl @MyF [concrete = constants.%MyF] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %local.patt: <error> = value_binding_pattern local [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc22_37: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global.ref: <error> = name_ref global, <error> [concrete = <error>]
// CHECK:STDOUT: %.1: <error> = splice_block <error> [concrete = <error>] {
// CHECK:STDOUT: %Cpp.ref.loc22_14: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %UnusupportedType.ref: <error> = name_ref UnusupportedType, <error> [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT: %local: <error> = value_binding local, <error> [concrete = <error>]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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