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.
85 lines
4.9 KiB
Plaintext
85 lines
4.9 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
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// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
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// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/function/call/empty_tuple.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/call/empty_tuple.carbon
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fn Echo(a: ()) -> () {
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return a;
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}
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fn Main() {
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Echo(());
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}
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// CHECK:STDOUT: --- empty_tuple.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: type: type = facet_type <type> [concrete]
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// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
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// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
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// CHECK:STDOUT: %pattern_type: type = pattern_type %empty_tuple.type [concrete]
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// CHECK:STDOUT: %a.param_patt: %pattern_type = value_param_pattern [concrete]
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// CHECK:STDOUT: %a.patt: %pattern_type = wrapper_binding_pattern a, %a.param_patt [concrete]
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// CHECK:STDOUT: %.262: Core.Form = init_form %empty_tuple.type [concrete]
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// CHECK:STDOUT: %return.param_patt: %pattern_type = out_param_pattern [concrete]
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// CHECK:STDOUT: %return.patt: %pattern_type = return_slot_pattern %return.param_patt, %empty_tuple.type [concrete]
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// CHECK:STDOUT: %Echo.type: type = fn_type @Echo [concrete]
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// CHECK:STDOUT: %Echo: %Echo.type = struct_value () [concrete]
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// CHECK:STDOUT: %Main.type: type = fn_type @Main [concrete]
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// CHECK:STDOUT: %Main: %Main.type = struct_value () [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
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// CHECK:STDOUT: .Echo = %Echo.decl
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// CHECK:STDOUT: .Main = %Main.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Echo.decl: %Echo.type = fn_decl @Echo [concrete = constants.%Echo] {
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// CHECK:STDOUT: %a.param_patt: %pattern_type = value_param_pattern [concrete = constants.%a.param_patt]
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// CHECK:STDOUT: %a.patt: %pattern_type = wrapper_binding_pattern a, %a.param_patt [concrete = constants.%a.patt]
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// CHECK:STDOUT: %return.param_patt: %pattern_type = out_param_pattern [concrete = constants.%return.param_patt]
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// CHECK:STDOUT: %return.patt: %pattern_type = return_slot_pattern %return.param_patt, %.loc15_20.2 [concrete = constants.%return.patt]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %.loc15_20.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %.loc15_20.2: type = converted %.loc15_20.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
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// CHECK:STDOUT: %.loc15_20.3: Core.Form = init_form %.loc15_20.2 [concrete = constants.%.262]
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// CHECK:STDOUT: %a.param: %empty_tuple.type = value_param call_param0
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// CHECK:STDOUT: %.loc15_13.1: type = splice_block %.loc15_13.3 [concrete = constants.%empty_tuple.type] {
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// CHECK:STDOUT: %.loc15_13.2: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %.loc15_13.3: type = converted %.loc15_13.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a: %empty_tuple.type = wrapper_binding a, %a.param
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// CHECK:STDOUT: %return.param: ref %empty_tuple.type = out_param call_param1
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// CHECK:STDOUT: %return: ref %empty_tuple.type = return_slot %return.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Main.decl: %Main.type = fn_decl @Main [concrete = constants.%Main] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @Echo(%a.param: %empty_tuple.type) -> out %return.param: %empty_tuple.type {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %a.ref: %empty_tuple.type = name_ref a, %a
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// CHECK:STDOUT: %.loc16_10: init %empty_tuple.type = tuple_init () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %.loc16_11: init %empty_tuple.type = converted %a.ref, %.loc16_10 [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: return %.loc16_11
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @Main() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %Echo.ref: %Echo.type = name_ref Echo, file.%Echo.decl [concrete = constants.%Echo]
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// CHECK:STDOUT: %.loc20_9.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %.loc20_9.2: %empty_tuple.type = converted %.loc20_9.1, %empty_tuple [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %Echo.call: init %empty_tuple.type = call %Echo.ref(%.loc20_9.2)
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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