mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Dana Jansens
fcae9610bd
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.
56 lines
2.7 KiB
Plaintext
56 lines
2.7 KiB
Plaintext
// 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/none.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/generic/forward_decl.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/generic/forward_decl.carbon
|
|
|
|
fn F(generic T: type);
|
|
|
|
// CHECK:STDOUT: --- forward_decl.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: type: type = facet_type <type> [concrete]
|
|
// CHECK:STDOUT: %.Self.frozen: type = symbolic_binding .Self [symbolic_self]
|
|
// CHECK:STDOUT: %pattern_type: type = pattern_type type [concrete]
|
|
// CHECK:STDOUT: %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [symbolic]
|
|
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic]
|
|
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
|
|
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
|
|
// CHECK:STDOUT: .F = %F.decl
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
|
|
// CHECK:STDOUT: %T.patt.loc15_15.1: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc15_15.2 (constants.%T.patt)]
|
|
// CHECK:STDOUT: } {
|
|
// CHECK:STDOUT: %.loc15_17.1: type = splice_block %.loc15_17.2 [concrete = type] {
|
|
// CHECK:STDOUT: %.Self.frozen: type = symbolic_binding .Self [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.loc15_17.2: type = type_literal type [concrete = type]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %T.loc15_15.2: type = symbolic_binding T, 0 [symbolic = %T.loc15_15.1 (constants.%T)]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: generic fn @F(%T.loc15_15.2: type) {
|
|
// CHECK:STDOUT: %T.patt.loc15_15.2: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc15_15.2 (constants.%T.patt)]
|
|
// CHECK:STDOUT: %T.loc15_15.1: type = symbolic_binding T, 0 [symbolic = %T.loc15_15.1 (constants.%T)]
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn();
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: specific @F(constants.%T) {
|
|
// CHECK:STDOUT: %T.patt.loc15_15.2 => constants.%T.patt
|
|
// CHECK:STDOUT: %T.loc15_15.1 => constants.%T
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|