mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:40:12 +01:00
Dana JansensandRichard Smith
82679e6689
If a `BindSymbolicName` is converted to `type` and then to its exact `FacetType`, we get a `FacetValue` wrapping the `BindSymbolicName` but providing no different information: it has the same witnesses and `FacetType` as the original `BindSymbolicName`. Yet it is a different constant value, creating multiple canonical forms with the same meaning. Now we make that `FacetValue` with the same `FacetType` as the `BindSymbolicName` it wraps evaluate back to the `BindSymbolicName`, making it the unique canonical form. This makes the "shortcut" in convert for avoiding impl lookup when converting from `FacetAccessType` to `FacetType` in this exact scenario work the same as doing the full impl lookup. --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
91 lines
5.7 KiB
Plaintext
91 lines
5.7 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/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/forward_declared.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/forward_declared.carbon
|
|
|
|
class Class;
|
|
|
|
fn F(p: Class*) -> Class* { return p; }
|
|
|
|
// CHECK:STDOUT: --- forward_declared.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %Class: type = class_type @Class [concrete]
|
|
// CHECK:STDOUT: %ptr.e71: type = ptr_type %Class [concrete]
|
|
// CHECK:STDOUT: %pattern_type.796: type = pattern_type %ptr.e71 [concrete]
|
|
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
|
|
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
|
|
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
|
|
// CHECK:STDOUT: %Copy.Op.type: type = fn_type @Copy.Op [concrete]
|
|
// CHECK:STDOUT: %T.8b3: type = bind_symbolic_name T, 0 [symbolic]
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.31f: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%T.8b3) [symbolic]
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.8a8: %ptr.as.Copy.impl.Op.type.31f = struct_value () [symbolic]
|
|
// CHECK:STDOUT: %Copy.impl_witness.929: <witness> = impl_witness imports.%Copy.impl_witness_table.53c, @ptr.as.Copy.impl(%Class) [concrete]
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.type.039: type = fn_type @ptr.as.Copy.impl.Op, @ptr.as.Copy.impl(%Class) [concrete]
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.275: %ptr.as.Copy.impl.Op.type.039 = struct_value () [concrete]
|
|
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %ptr.e71, (%Copy.impl_witness.929) [concrete]
|
|
// CHECK:STDOUT: %.93e: type = fn_type_with_self_type %Copy.Op.type, %Copy.facet [concrete]
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %ptr.as.Copy.impl.Op.275, @ptr.as.Copy.impl.Op(%Class) [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: imports {
|
|
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
|
|
// CHECK:STDOUT: .Copy = %Core.Copy
|
|
// CHECK:STDOUT: import Core//prelude
|
|
// CHECK:STDOUT: import Core//prelude/...
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
|
|
// CHECK:STDOUT: %Core.import_ref.0e4: @ptr.as.Copy.impl.%ptr.as.Copy.impl.Op.type (%ptr.as.Copy.impl.Op.type.31f) = import_ref Core//prelude/parts/copy, loc36_31, loaded [symbolic = @ptr.as.Copy.impl.%ptr.as.Copy.impl.Op (constants.%ptr.as.Copy.impl.Op.8a8)]
|
|
// CHECK:STDOUT: %Copy.impl_witness_table.53c = impl_witness_table (%Core.import_ref.0e4), @ptr.as.Copy.impl [concrete]
|
|
// 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: .F = %F.decl
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %Core.import = import Core
|
|
// CHECK:STDOUT: %Class.decl: type = class_decl @Class [concrete = constants.%Class] {} {}
|
|
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
|
|
// CHECK:STDOUT: %p.patt: %pattern_type.796 = binding_pattern p [concrete]
|
|
// CHECK:STDOUT: %p.param_patt: %pattern_type.796 = value_param_pattern %p.patt, call_param0 [concrete]
|
|
// CHECK:STDOUT: %return.patt: %pattern_type.796 = return_slot_pattern [concrete]
|
|
// CHECK:STDOUT: %return.param_patt: %pattern_type.796 = out_param_pattern %return.patt, call_param1 [concrete]
|
|
// CHECK:STDOUT: } {
|
|
// CHECK:STDOUT: %Class.ref.loc17_20: type = name_ref Class, file.%Class.decl [concrete = constants.%Class]
|
|
// CHECK:STDOUT: %ptr.loc17_25: type = ptr_type %Class.ref.loc17_20 [concrete = constants.%ptr.e71]
|
|
// CHECK:STDOUT: %p.param: %ptr.e71 = value_param call_param0
|
|
// CHECK:STDOUT: %.loc17: type = splice_block %ptr.loc17_14 [concrete = constants.%ptr.e71] {
|
|
// CHECK:STDOUT: %Class.ref.loc17_9: type = name_ref Class, file.%Class.decl [concrete = constants.%Class]
|
|
// CHECK:STDOUT: %ptr.loc17_14: type = ptr_type %Class.ref.loc17_9 [concrete = constants.%ptr.e71]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %p: %ptr.e71 = bind_name p, %p.param
|
|
// CHECK:STDOUT: %return.param: ref %ptr.e71 = out_param call_param1
|
|
// CHECK:STDOUT: %return: ref %ptr.e71 = return_slot %return.param
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: class @Class;
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @F(%p.param: %ptr.e71) -> %ptr.e71 {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: %p.ref: %ptr.e71 = name_ref p, %p
|
|
// CHECK:STDOUT: %impl.elem0: %.93e = impl_witness_access constants.%Copy.impl_witness.929, element0 [concrete = constants.%ptr.as.Copy.impl.Op.275]
|
|
// CHECK:STDOUT: %bound_method.loc17_36.1: <bound method> = bound_method %p.ref, %impl.elem0
|
|
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @ptr.as.Copy.impl.Op(constants.%Class) [concrete = constants.%ptr.as.Copy.impl.Op.specific_fn]
|
|
// CHECK:STDOUT: %bound_method.loc17_36.2: <bound method> = bound_method %p.ref, %specific_fn
|
|
// CHECK:STDOUT: %ptr.as.Copy.impl.Op.call: init %ptr.e71 = call %bound_method.loc17_36.2(%p.ref)
|
|
// CHECK:STDOUT: return %ptr.as.Copy.impl.Op.call to %return
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|