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carbon-lang/toolchain/check/testdata/function/call/fail_param_count.carbon
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Dana Jansens fcae9610bd Make SemIR::TypeType be an empty FacetType instruction (#7813) 
The type `type` is now a `FacetType` inst with no constraints. This
brings the model implemented in the toolchain into better alignment with
the language design. The `SemIR::TypeType` struct remains as a scope for
holding the `TypeInstId`, `ConstantId`, and `TypeId` constants, but is
not an `InstKind` anymore.

The `TypeType` inst looks a lot like singletons, but there are many
`FacetType` insts so it doesn't quite fit that model. So we put it
alongside singletons with a fixed inst id but refer to it as a more
general "builtin" inst that is not a singleton.
`Namespace::PackageInstId` is similar, and we group it with `TypeType`
conceptually as another builtin instruction with a fixed id.

No conversion is needed anymore to use a `type` as a facet, since types
also have a `FacetType` type. This simplifies and removes a number of
helpers and branches throughout the code.

The `TypeType` inst is now part of the constant store, so we end up
printing it in the constants block in every test. But it's also named
`type` rather than `%type` to preserve the majority of existing
formatting behaviour, though this does look different from other
constants.

Assisted-by: Opus 5 was used to generate a first draft and validate the
refactoring. Though nearly everything non-trivial the tool wrote has
been modified or rewritten.
2026-09-22 15:04:40 +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/int.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/function/call/fail_param_count.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/call/fail_param_count.carbon
fn Run0() {}
fn Run1(unused a: i32) {}
fn Run2(unused a: i32, unused b: i32) {}
fn Main() {
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 1 argument passed to function expecting 0 arguments [CallArgCountMismatch]
// CHECK:STDERR: Run0(1);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-8]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run0() {}
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR:
Run0(1);
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 2 arguments passed to function expecting 0 arguments [CallArgCountMismatch]
// CHECK:STDERR: Run0(0, 1);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-16]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run0() {}
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR:
Run0(0, 1);
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 0 arguments passed to function expecting 1 argument [CallArgCountMismatch]
// CHECK:STDERR: Run1();
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-24]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run1(unused a: i32) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Run1();
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 2 arguments passed to function expecting 1 argument [CallArgCountMismatch]
// CHECK:STDERR: Run1(0, 1);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-32]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run1(unused a: i32) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Run1(0, 1);
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 0 arguments passed to function expecting 2 arguments [CallArgCountMismatch]
// CHECK:STDERR: Run2();
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-40]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run2(unused a: i32, unused b: i32) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Run2();
// CHECK:STDERR: fail_param_count.carbon:[[@LINE+7]]:3: error: 1 argument passed to function expecting 2 arguments [CallArgCountMismatch]
// CHECK:STDERR: Run2(0);
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_param_count.carbon:[[@LINE-48]]:1: note: calling function declared here [InCallToEntity]
// CHECK:STDERR: fn Run2(unused a: i32, unused b: i32) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Run2(0);
}
// CHECK:STDOUT: --- fail_param_count.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %Run0.type: type = fn_type @Run0 [concrete]
// CHECK:STDOUT: %Run0: %Run0.type = struct_value () [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.6b6: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %a.param_patt: %pattern_type.6b6 = value_param_pattern [concrete]
// CHECK:STDOUT: %a.patt.ab6041.1: %pattern_type.6b6 = wrapper_binding_pattern a, %a.param_patt [concrete]
// CHECK:STDOUT: %Run1.type: type = fn_type @Run1 [concrete]
// CHECK:STDOUT: %Run1: %Run1.type = struct_value () [concrete]
// CHECK:STDOUT: %a.patt.ab6041.2: %pattern_type.6b6 = wrapper_binding_pattern a, %a.param_patt [concrete]
// CHECK:STDOUT: %b.param_patt: %pattern_type.6b6 = value_param_pattern [concrete]
// CHECK:STDOUT: %b.patt: %pattern_type.6b6 = wrapper_binding_pattern b, %b.param_patt [concrete]
// CHECK:STDOUT: %Run2.type: type = fn_type @Run2 [concrete]
// CHECK:STDOUT: %Run2: %Run2.type = struct_value () [concrete]
// CHECK:STDOUT: %Main.type: type = fn_type @Main [concrete]
// CHECK:STDOUT: %Main: %Main.type = struct_value () [concrete]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Run0 = %Run0.decl
// CHECK:STDOUT: .Run1 = %Run1.decl
// CHECK:STDOUT: .Run2 = %Run2.decl
// CHECK:STDOUT: .Main = %Main.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Run0.decl: %Run0.type = fn_decl @Run0 [concrete = constants.%Run0] {} {}
// CHECK:STDOUT: %Run1.decl: %Run1.type = fn_decl @Run1 [concrete = constants.%Run1] {
// CHECK:STDOUT: %a.param_patt: %pattern_type.6b6 = value_param_pattern [concrete = constants.%a.param_patt]
// CHECK:STDOUT: %a.patt: %pattern_type.6b6 = wrapper_binding_pattern a, %a.param_patt [concrete = constants.%a.patt.ab6041.1]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %a.param: %i32 = value_param call_param0
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %a: %i32 = wrapper_binding a, %a.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Run2.decl: %Run2.type = fn_decl @Run2 [concrete = constants.%Run2] {
// CHECK:STDOUT: %a.param_patt: %pattern_type.6b6 = value_param_pattern [concrete = constants.%a.param_patt]
// CHECK:STDOUT: %a.patt: %pattern_type.6b6 = wrapper_binding_pattern a, %a.param_patt [concrete = constants.%a.patt.ab6041.2]
// CHECK:STDOUT: %b.param_patt: %pattern_type.6b6 = value_param_pattern [concrete = constants.%b.param_patt]
// CHECK:STDOUT: %b.patt: %pattern_type.6b6 = wrapper_binding_pattern b, %b.param_patt [concrete = constants.%b.patt]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %a.param: %i32 = value_param call_param0
// CHECK:STDOUT: %i32.loc17_19: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %a: %i32 = wrapper_binding a, %a.param
// CHECK:STDOUT: %b.param: %i32 = value_param call_param1
// CHECK:STDOUT: %i32.loc17_34: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %b: %i32 = wrapper_binding b, %b.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Main.decl: %Main.type = fn_decl @Main [concrete = constants.%Main] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run0() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run1(%a.param: %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run2(%a.param: %i32, %b.param: %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Main() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Run0.ref.loc27: %Run0.type = name_ref Run0, file.%Run0.decl [concrete = constants.%Run0]
// CHECK:STDOUT: %int_1.loc27: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %Run0.ref.loc35: %Run0.type = name_ref Run0, file.%Run0.decl [concrete = constants.%Run0]
// CHECK:STDOUT: %int_0.loc35: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: %int_1.loc35: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %Run1.ref.loc44: %Run1.type = name_ref Run1, file.%Run1.decl [concrete = constants.%Run1]
// CHECK:STDOUT: %Run1.ref.loc52: %Run1.type = name_ref Run1, file.%Run1.decl [concrete = constants.%Run1]
// CHECK:STDOUT: %int_0.loc52: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: %int_1.loc52: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %Run2.ref.loc61: %Run2.type = name_ref Run2, file.%Run2.decl [concrete = constants.%Run2]
// CHECK:STDOUT: %Run2.ref.loc69: %Run2.type = name_ref Run2, file.%Run2.decl [concrete = constants.%Run2]
// CHECK:STDOUT: %int_0.loc69: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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