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c608c35e12307a40d809df3f93e35173c12b5b27
carbon-lang/toolchain/check/testdata/interop/cpp/function/import/function.carbon
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Chandler Carruth c608c35e12 Rework the initial terminal rendering into the form the design landed on (#7994) 
There were a number of iterations on the design that weren't reflected
in the initial port to the terminal rendering library. This PR tries to
complete the rendering side of things to match the design we landed on:
code-focused, with messages attached by lines to the code, and condensed
as much as possible to avoid the vertical space.

It also improves the styling to make things more visually
distinguishable such as adding a `->` to the main error line, and making
the underlines and connectors for it have a heavy weight (when the font
supports that).

Another major change is having multiple messages on a single line be
drawn in source lexical order. This requires the connectors to cross
without joining, but makes it easier to read the messages.

This PR also has some refactorings to enable these improvements, and a
_number_ of improvements to comment prose and terminology to try and
avoid jargon and make things read more naturally. Sorry for the fact
that Claude left a bunch of this mannerly language in comments despite
my efforts, but I'm continuing to try and drive the prose towards
something direct and simple to read. Some of the terminology
improvements also needed to be made in the design doc and those have
been made here.

Note that I don't think this rendering is perfect or should be viewed as
final. I'm happy to iterate on it further, and have a few adjustments in
mind already, but would like to focus this on getting the
_implementation_ of the current rendering design in place, and then we
can make targeted changes or tweaks as needed. For example, I'm not yet
fully happy with the rendering when messages are too long and we move
them all the way to the left, but am leaving that for a follow-up.

Assisted-by: Claude Code
2026-10-31 06:10:03 +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/primitives.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/function/import/function.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/function/import/function.carbon
// ============================================================================
// Global
// ============================================================================
// --- global.h
auto global_foo() -> void;
// --- import_global.carbon
library "[[@TEST_NAME]]";
import Cpp library "global.h";
fn MyF() {
//@dump-sem-ir-begin
Cpp.global_foo();
//@dump-sem-ir-end
}
// --- fail_import_global_use_different_name.carbon
library "[[@TEST_NAME]]";
import Cpp library "global.h";
fn MyF() {
// CHECK:STDERR: fail_import_global_use_different_name.carbon:[[@LINE+2]]:3-9: error: member name `bar` not found in `Cpp` [MemberNameNotFoundInInstScope]
// CHECK:STDERR:
Cpp.bar();
}
// ============================================================================
// Carbon keyword name
// ============================================================================
// --- special_name.h
auto base() -> void;
// --- fail_import_special_name_call_unescaped.carbon
library "[[@TEST_NAME]]";
import Cpp library "special_name.h";
fn MyF() {
// CHECK:STDERR: fail_import_special_name_call_unescaped.carbon:[[@LINE+2]]:3-10: error: member name `base` not found in `Cpp` [MemberNameNotFoundInInstScope]
// CHECK:STDERR:
Cpp.base();
}
// --- import_special_name_call_escaped.carbon
library "[[@TEST_NAME]]";
import Cpp library "special_name.h";
fn MyF() {
//@dump-sem-ir-begin
Cpp.r#base();
//@dump-sem-ir-end
}
// --- fail_import_special_name_call_escaped_no_match.carbon
library "[[@TEST_NAME]]";
import Cpp library "special_name.h";
fn MyF() {
// CHECK:STDERR: fail_import_special_name_call_escaped_no_match.carbon:[[@LINE+4]]:3-12: error: no matching function for call to 'base' [CppInteropParseError]
// CHECK:STDERR: ./special_name.h:2:6: note: candidate function not viable [CppInteropParseNote]
// CHECK:STDERR: ./special_name.h:2:10-11: note: requires 0 arguments, but 1 was provided [CppInteropParseNoteReason]
// CHECK:STDERR:
Cpp.r#base(1);
}
// ============================================================================
// Overloaded
// ============================================================================
// --- overloaded.h
auto overloaded_foo() -> void;
auto overloaded_foo(int value) -> void;
// --- import_overloaded.carbon
library "[[@TEST_NAME]]";
import Cpp library "overloaded.h";
fn F() {
//@dump-sem-ir-begin
Cpp.overloaded_foo();
//@dump-sem-ir-end
}
// ============================================================================
// Variadic arguments
// ============================================================================
// --- variadic.h
auto variadic_foo(int x, ...) -> void;
// --- fail_todo_import_variadic.carbon
library "[[@TEST_NAME]]";
import Cpp library "variadic.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_variadic.carbon:[[@LINE+2]]:3-21: error: semantics TODO: `Unsupported: Variadic function` [SemanticsTodo]
// CHECK:STDERR:
Cpp.variadic_foo(8);
//@dump-sem-ir-end
}
// ============================================================================
// Static
// ============================================================================
// --- static.h
// TODO: Promote this warning to an error by default.
// CHECK:STDERR: ./static.h:[[@LINE+1]]:13: warning: function 'static_foo' has internal linkage but is not defined [CppInteropParseWarning]
static auto static_foo() -> void;
// --- todo_fail_import_static.carbon
library "[[@TEST_NAME]]";
import Cpp library "static.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: todo_fail_import_static.carbon:[[@LINE+2]]:18: note: used here [CppInteropParseNote]
// CHECK:STDERR:
Cpp.static_foo();
//@dump-sem-ir-end
}
// --- template_function.h
template<typename T>
auto template_foo(T a) -> void;
template<typename T>
auto template_bar(T a) -> T;
// --- import_template_function.carbon
library "[[@TEST_NAME]]";
import Cpp library "template_function.h";
fn F() {
//@dump-sem-ir-begin
Cpp.template_foo(1 as i32);
//@dump-sem-ir-end
}
fn G() -> i32 {
//@dump-sem-ir-begin
return Cpp.template_bar(1 as i32);
//@dump-sem-ir-end
}
// TODO: Add a test per unsupported param type. See https://github.com/carbon-language/carbon-lang/pull/5477/files/4321e21ed27d987fd71be182d292973fd9849df8#r2094655176
// TODO: Add a test per unsupported return type. See https://github.com/carbon-language/carbon-lang/pull/5477/files/4321e21ed27d987fd71be182d292973fd9849df8#r2094655176
// CHECK:STDOUT: --- import_global.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %global_foo.cpp_overload_set.type: type = cpp_overload_set_type @global_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %global_foo.cpp_overload_set.value: %global_foo.cpp_overload_set.type = cpp_overload_set_value @global_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %global_foo.type: type = fn_type @global_foo [concrete]
// CHECK:STDOUT: %global_foo: %global_foo.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .global_foo = %global_foo.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %global_foo.cpp_overload_set.value: %global_foo.cpp_overload_set.type = cpp_overload_set_value @global_foo.cpp_overload_set [concrete = constants.%global_foo.cpp_overload_set.value]
// CHECK:STDOUT: %global_foo.decl: %global_foo.type = fn_decl @global_foo [concrete = constants.%global_foo] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %global_foo.ref: %global_foo.cpp_overload_set.type = name_ref global_foo, imports.%global_foo.cpp_overload_set.value [concrete = constants.%global_foo.cpp_overload_set.value]
// CHECK:STDOUT: %global_foo.call: init %empty_tuple.type = call imports.%global_foo.decl()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_special_name_call_escaped.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %base.cpp_overload_set.type: type = cpp_overload_set_type @base.cpp_overload_set [concrete]
// CHECK:STDOUT: %base.cpp_overload_set.value: %base.cpp_overload_set.type = cpp_overload_set_value @base.cpp_overload_set [concrete]
// CHECK:STDOUT: %base.type: type = fn_type @base [concrete]
// CHECK:STDOUT: %base: %base.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .r#base = %base.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %base.cpp_overload_set.value: %base.cpp_overload_set.type = cpp_overload_set_value @base.cpp_overload_set [concrete = constants.%base.cpp_overload_set.value]
// CHECK:STDOUT: %base.decl: %base.type = fn_decl @base [concrete = constants.%base] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MyF() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %base.ref: %base.cpp_overload_set.type = name_ref r#base, imports.%base.cpp_overload_set.value [concrete = constants.%base.cpp_overload_set.value]
// CHECK:STDOUT: %base.call: init %empty_tuple.type = call imports.%base.decl()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_overloaded.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %overloaded_foo.cpp_overload_set.type: type = cpp_overload_set_type @overloaded_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %overloaded_foo.cpp_overload_set.value: %overloaded_foo.cpp_overload_set.type = cpp_overload_set_value @overloaded_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %overloaded_foo.type: type = fn_type @overloaded_foo [concrete]
// CHECK:STDOUT: %overloaded_foo: %overloaded_foo.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .overloaded_foo = %overloaded_foo.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %overloaded_foo.cpp_overload_set.value: %overloaded_foo.cpp_overload_set.type = cpp_overload_set_value @overloaded_foo.cpp_overload_set [concrete = constants.%overloaded_foo.cpp_overload_set.value]
// CHECK:STDOUT: %overloaded_foo.decl: %overloaded_foo.type = fn_decl @overloaded_foo [concrete = constants.%overloaded_foo] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %overloaded_foo.ref: %overloaded_foo.cpp_overload_set.type = name_ref overloaded_foo, imports.%overloaded_foo.cpp_overload_set.value [concrete = constants.%overloaded_foo.cpp_overload_set.value]
// CHECK:STDOUT: %overloaded_foo.call: init %empty_tuple.type = call imports.%overloaded_foo.decl()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_variadic.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %variadic_foo.cpp_overload_set.type: type = cpp_overload_set_type @variadic_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %variadic_foo.cpp_overload_set.value: %variadic_foo.cpp_overload_set.type = cpp_overload_set_value @variadic_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %int_8: Core.IntLiteral = int_value 8 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .variadic_foo = %variadic_foo.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %variadic_foo.cpp_overload_set.value: %variadic_foo.cpp_overload_set.type = cpp_overload_set_value @variadic_foo.cpp_overload_set [concrete = constants.%variadic_foo.cpp_overload_set.value]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %variadic_foo.ref: %variadic_foo.cpp_overload_set.type = name_ref variadic_foo, imports.%variadic_foo.cpp_overload_set.value [concrete = constants.%variadic_foo.cpp_overload_set.value]
// CHECK:STDOUT: %int_8: Core.IntLiteral = int_value 8 [concrete = constants.%int_8]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- todo_fail_import_static.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %static_foo.cpp_overload_set.type: type = cpp_overload_set_type @static_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %static_foo.cpp_overload_set.value: %static_foo.cpp_overload_set.type = cpp_overload_set_value @static_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %static_foo.type: type = fn_type @static_foo [concrete]
// CHECK:STDOUT: %static_foo: %static_foo.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .static_foo = %static_foo.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %static_foo.cpp_overload_set.value: %static_foo.cpp_overload_set.type = cpp_overload_set_value @static_foo.cpp_overload_set [concrete = constants.%static_foo.cpp_overload_set.value]
// CHECK:STDOUT: %static_foo.decl: %static_foo.type = fn_decl @static_foo [concrete = constants.%static_foo] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %static_foo.ref: %static_foo.cpp_overload_set.type = name_ref static_foo, imports.%static_foo.cpp_overload_set.value [concrete = constants.%static_foo.cpp_overload_set.value]
// CHECK:STDOUT: %static_foo.call: init %empty_tuple.type = call imports.%static_foo.decl()
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_template_function.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %template_foo.cpp_overload_set.type: type = cpp_overload_set_type @template_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %template_foo.cpp_overload_set.value: %template_foo.cpp_overload_set.type = cpp_overload_set_value @template_foo.cpp_overload_set [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %As.type.b93: type = facet_type <@As, @As(%i32)> [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.396: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.84a: %Core.IntLiteral.as.As.impl.Convert.type.396 = struct_value () [symbolic]
// CHECK:STDOUT: %As.impl_witness.e09: <witness> = impl_witness imports.%As.impl_witness_table.1c2, @Core.IntLiteral.as.As.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.2b0: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.94f: %Core.IntLiteral.as.As.impl.Convert.type.2b0 = struct_value () [concrete]
// CHECK:STDOUT: %As.facet: %As.type.b93 = facet_value Core.IntLiteral, (%As.impl_witness.e09) [concrete]
// CHECK:STDOUT: %As.WithSelf.Convert.type.2be: type = fn_type @As.WithSelf.Convert, @As.WithSelf(%i32, %As.facet) [concrete]
// CHECK:STDOUT: %.979: type = fn_type_with_self_type %As.WithSelf.Convert.type.2be, %As.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.bound: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.94f [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.94f, @Core.IntLiteral.as.As.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.68a: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %template_foo.type: type = fn_type @template_foo [concrete]
// CHECK:STDOUT: %template_foo: %template_foo.type = struct_value () [concrete]
// CHECK:STDOUT: %template_bar.cpp_overload_set.type: type = cpp_overload_set_type @template_bar.cpp_overload_set [concrete]
// CHECK:STDOUT: %template_bar.cpp_overload_set.value: %template_bar.cpp_overload_set.type = cpp_overload_set_value @template_bar.cpp_overload_set [concrete]
// CHECK:STDOUT: %template_bar.type: type = fn_type @template_bar [concrete]
// CHECK:STDOUT: %template_bar: %template_bar.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .template_foo = %template_foo.cpp_overload_set.value
// CHECK:STDOUT: .template_bar = %template_bar.cpp_overload_set.value
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %template_foo.cpp_overload_set.value: %template_foo.cpp_overload_set.type = cpp_overload_set_value @template_foo.cpp_overload_set [concrete = constants.%template_foo.cpp_overload_set.value]
// CHECK:STDOUT: %Core.import_ref.9e0: @Core.IntLiteral.as.As.impl.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.396) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.As.impl.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.84a)]
// CHECK:STDOUT: %As.impl_witness_table.1c2 = impl_witness_table (%Core.import_ref.9e0), @Core.IntLiteral.as.As.impl [concrete]
// CHECK:STDOUT: %template_foo.decl: %template_foo.type = fn_decl @template_foo [concrete = constants.%template_foo] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: %template_bar.cpp_overload_set.value: %template_bar.cpp_overload_set.type = cpp_overload_set_value @template_bar.cpp_overload_set [concrete = constants.%template_bar.cpp_overload_set.value]
// CHECK:STDOUT: %template_bar.decl: %template_bar.type = fn_decl @template_bar [concrete = constants.%template_bar] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %template_foo.ref: %template_foo.cpp_overload_set.type = name_ref template_foo, imports.%template_foo.cpp_overload_set.value [concrete = constants.%template_foo.cpp_overload_set.value]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %impl.elem0: %.979 = impl_witness_access constants.%As.impl_witness.e09, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.94f]
// CHECK:STDOUT: %bound_method.loc8_22.1: <bound method> = bound_method %int_1, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Core.IntLiteral.as.As.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc8_22.2: <bound method> = bound_method %int_1, %specific_fn [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.call: init %i32 = call %bound_method.loc8_22.2(%int_1) [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %.loc8_22.1: %i32 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %.loc8_22.2: %i32 = converted %int_1, %.loc8_22.1 [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %template_foo.call: init %empty_tuple.type = call imports.%template_foo.decl(%.loc8_22.2)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G() -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %template_bar.ref: %template_bar.cpp_overload_set.type = name_ref template_bar, imports.%template_bar.cpp_overload_set.value [concrete = constants.%template_bar.cpp_overload_set.value]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %i32.loc14: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %impl.elem0: %.979 = impl_witness_access constants.%As.impl_witness.e09, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.94f]
// CHECK:STDOUT: %bound_method.loc14_29.1: <bound method> = bound_method %int_1, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Core.IntLiteral.as.As.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc14_29.2: <bound method> = bound_method %int_1, %specific_fn [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.call: init %i32 = call %bound_method.loc14_29.2(%int_1) [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %.loc14_29.1: %i32 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %.loc14_29.2: %i32 = converted %int_1, %.loc14_29.1 [concrete = constants.%int_1.68a]
// CHECK:STDOUT: %template_bar.call: init %i32 = call imports.%template_bar.decl(%.loc14_29.2)
// CHECK:STDOUT: return %template_bar.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
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