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f9ab963bd6afa8a5f2fe894f5913af5435b72464
carbon-lang/toolchain/check/testdata/class/method/generic_method.carbon
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Richard Smith f9ab963bd6 Add a type_literal instruction to represent syntactic type literals. (#6781) 
This allows us to capture the location at which a type literal was used,
even in the cases where we don't otherwise need to create a new
instruction to represent the type such as for `char` or `str`.

The logic used to build the underlying type is now marked as desugaring.
For cases such as `iN`, this causes the call to `Core.Int` to no longer
be added as a dedicated IR instruction, and instead its constant value
is used directly as the value of the `type_literal`. This results in
this being on balance a reduction in the size of the IR.

This also fixes a crash in C++ interop when using a `char` literal as a
template argument. The crash was caused by the template argument not
having an associated location when mapping to a C++ location. See
changes to check/testdata/interop/cpp/template/type_param.carbon for an
example that used to crash before this change.

Update alias handling to allow an alias to point at any type literal,
reinstating support for aliases for type literals such as `bool` and
`i32` that had previously worked but stopped working when we
transitioned those types to being defined in the prelude. See changes to
toolchain/check/testdata/alias/builtins.carbon.

All the test changes other than the two mentioned above are mechanical
autoupdate changes switching to the new instruction.
2026-02-26 20:10:50 +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/convert.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/method/generic_method.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/method/generic_method.carbon
class Class(T:! type) {
var a: T;
fn F[self: Self](n: T);
}
fn Class(T:! type).F[unused self: Self](unused n: T) {}
// CHECK:STDOUT: --- generic_method.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %pattern_type.98f: type = pattern_type type [concrete]
// CHECK:STDOUT: %Class.type: type = generic_class_type @Class [concrete]
// CHECK:STDOUT: %Class.generic: %Class.type = struct_value () [concrete]
// CHECK:STDOUT: %Class: type = class_type @Class, @Class(%T) [symbolic]
// CHECK:STDOUT: %require_complete.944: <witness> = require_complete_type %T [symbolic]
// CHECK:STDOUT: %Class.elem: type = unbound_element_type %Class, %T [symbolic]
// CHECK:STDOUT: %pattern_type.466: type = pattern_type %Class [symbolic]
// CHECK:STDOUT: %pattern_type.51d: type = pattern_type %T [symbolic]
// CHECK:STDOUT: %Class.F.type: type = fn_type @Class.F, @Class(%T) [symbolic]
// CHECK:STDOUT: %Class.F: %Class.F.type = struct_value () [symbolic]
// CHECK:STDOUT: %struct_type.a: type = struct_type {.a: %T} [symbolic]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %struct_type.a [symbolic]
// CHECK:STDOUT: %require_complete.43d: <witness> = require_complete_type %Class [symbolic]
// 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: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl: %Class.type = class_decl @Class [concrete = constants.%Class.generic] {
// CHECK:STDOUT: %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc15_17.1: type = splice_block %.loc15_17.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc15_17.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc15_13.2: type = symbolic_binding T, 0 [symbolic = %T.loc15_13.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [symbolic = constants.%Class.F] {
// CHECK:STDOUT: %self.patt: @Class.F.%pattern_type.loc17_8 (%pattern_type.466) = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: @Class.F.%pattern_type.loc17_8 (%pattern_type.466) = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: %n.patt: @Class.F.%pattern_type.loc17_20 (%pattern_type.51d) = value_binding_pattern n [concrete]
// CHECK:STDOUT: %n.param_patt: @Class.F.%pattern_type.loc17_20 (%pattern_type.51d) = value_param_pattern %n.patt, call_param1 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc20_14.1: type = splice_block %.loc20_14.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc20_14.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc20: type = symbolic_binding T, 0 [symbolic = @Class.%T.loc15_13.1 (constants.%T)]
// CHECK:STDOUT: %self.param.loc20: @Class.F.%Class (%Class) = value_param call_param0
// CHECK:STDOUT: %.loc20_35.1: type = splice_block %Self.ref.loc20 [symbolic = %Class (constants.%Class)] {
// CHECK:STDOUT: %.loc20_35.2: type = specific_constant constants.%Class, @Class(constants.%T) [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: %Self.ref.loc20: type = name_ref Self, %.loc20_35.2 [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self.loc20: @Class.F.%Class (%Class) = value_binding self, %self.param.loc20
// CHECK:STDOUT: %n.param.loc20: @Class.F.%T.loc17 (%T) = value_param call_param1
// CHECK:STDOUT: %T.ref.loc20: type = name_ref T, %T.loc20 [symbolic = %T.loc17 (constants.%T)]
// CHECK:STDOUT: %n.loc20: @Class.F.%T.loc17 (%T) = value_binding n, %n.param.loc20
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic class @Class(%T.loc15_13.2: type) {
// CHECK:STDOUT: %T.loc15_13.1: type = symbolic_binding T, 0 [symbolic = %T.loc15_13.1 (constants.%T)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %T.loc15_13.1 [symbolic = %require_complete (constants.%require_complete.944)]
// CHECK:STDOUT: %Class: type = class_type @Class, @Class(%T.loc15_13.1) [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: %Class.elem: type = unbound_element_type %Class, %T.loc15_13.1 [symbolic = %Class.elem (constants.%Class.elem)]
// CHECK:STDOUT: %Class.F.type: type = fn_type @Class.F, @Class(%T.loc15_13.1) [symbolic = %Class.F.type (constants.%Class.F.type)]
// CHECK:STDOUT: %Class.F: @Class.%Class.F.type (%Class.F.type) = struct_value () [symbolic = %Class.F (constants.%Class.F)]
// CHECK:STDOUT: %struct_type.a: type = struct_type {.a: @Class.%T.loc15_13.1 (%T)} [symbolic = %struct_type.a (constants.%struct_type.a)]
// CHECK:STDOUT: %complete_type.loc18_1.2: <witness> = complete_type_witness %struct_type.a [symbolic = %complete_type.loc18_1.2 (constants.%complete_type)]
// CHECK:STDOUT:
// CHECK:STDOUT: class {
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc15_13.2 [symbolic = %T.loc15_13.1 (constants.%T)]
// CHECK:STDOUT: %.loc16: @Class.%Class.elem (%Class.elem) = field_decl a, element0 [concrete]
// CHECK:STDOUT: %Class.F.decl: @Class.%Class.F.type (%Class.F.type) = fn_decl @Class.F [symbolic = @Class.%Class.F (constants.%Class.F)] {
// CHECK:STDOUT: %self.patt: @Class.F.%pattern_type.loc17_8 (%pattern_type.466) = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: @Class.F.%pattern_type.loc17_8 (%pattern_type.466) = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: %n.patt: @Class.F.%pattern_type.loc17_20 (%pattern_type.51d) = value_binding_pattern n [concrete]
// CHECK:STDOUT: %n.param_patt: @Class.F.%pattern_type.loc17_20 (%pattern_type.51d) = value_param_pattern %n.patt, call_param1 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param.loc17: @Class.F.%Class (%Class) = value_param call_param0
// CHECK:STDOUT: %.loc17_14.1: type = splice_block %Self.ref.loc17 [symbolic = %Class (constants.%Class)] {
// CHECK:STDOUT: %.loc17_14.2: type = specific_constant constants.%Class, @Class(constants.%T) [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: %Self.ref.loc17: type = name_ref Self, %.loc17_14.2 [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self.loc17: @Class.F.%Class (%Class) = value_binding self, %self.param.loc17
// CHECK:STDOUT: %n.param.loc17: @Class.F.%T.loc17 (%T) = value_param call_param1
// CHECK:STDOUT: %T.ref.loc17: type = name_ref T, @Class.%T.loc15_13.2 [symbolic = %T.loc17 (constants.%T)]
// CHECK:STDOUT: %n.loc17: @Class.F.%T.loc17 (%T) = value_binding n, %n.param.loc17
// CHECK:STDOUT: }
// CHECK:STDOUT: %complete_type.loc18_1.1: <witness> = complete_type_witness constants.%struct_type.a [symbolic = %complete_type.loc18_1.2 (constants.%complete_type)]
// CHECK:STDOUT: complete_type_witness = %complete_type.loc18_1.1
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .T = <poisoned>
// CHECK:STDOUT: .a = %.loc16
// CHECK:STDOUT: .F = %Class.F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Class.F(@Class.%T.loc15_13.2: type) {
// CHECK:STDOUT: %T.loc17: type = symbolic_binding T, 0 [symbolic = %T.loc17 (constants.%T)]
// CHECK:STDOUT: %Class: type = class_type @Class, @Class(%T.loc17) [symbolic = %Class (constants.%Class)]
// CHECK:STDOUT: %pattern_type.loc17_8: type = pattern_type %Class [symbolic = %pattern_type.loc17_8 (constants.%pattern_type.466)]
// CHECK:STDOUT: %pattern_type.loc17_20: type = pattern_type %T.loc17 [symbolic = %pattern_type.loc17_20 (constants.%pattern_type.51d)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc20_33: <witness> = require_complete_type %Class [symbolic = %require_complete.loc20_33 (constants.%require_complete.43d)]
// CHECK:STDOUT: %require_complete.loc20_49: <witness> = require_complete_type %T.loc17 [symbolic = %require_complete.loc20_49 (constants.%require_complete.944)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%self.param.loc20: @Class.F.%Class (%Class), %n.param.loc20: @Class.F.%T.loc17 (%T)) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Class(constants.%T) {
// CHECK:STDOUT: %T.loc15_13.1 => constants.%T
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete => constants.%require_complete.944
// CHECK:STDOUT: %Class => constants.%Class
// CHECK:STDOUT: %Class.elem => constants.%Class.elem
// CHECK:STDOUT: %Class.F.type => constants.%Class.F.type
// CHECK:STDOUT: %Class.F => constants.%Class.F
// CHECK:STDOUT: %struct_type.a => constants.%struct_type.a
// CHECK:STDOUT: %complete_type.loc18_1.2 => constants.%complete_type
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Class.F(constants.%T) {
// CHECK:STDOUT: %T.loc17 => constants.%T
// CHECK:STDOUT: %Class => constants.%Class
// CHECK:STDOUT: %pattern_type.loc17_8 => constants.%pattern_type.466
// CHECK:STDOUT: %pattern_type.loc17_20 => constants.%pattern_type.51d
// CHECK:STDOUT: }
// CHECK:STDOUT:
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