mirror of
https://github.com/carbon-language/carbon-lang.git
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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>
59 lines
2.6 KiB
Plaintext
59 lines
2.6 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/full.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/operators/overloaded/bit_complement.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/operators/overloaded/bit_complement.carbon
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// This file was generated from unary_op.carbon.tmpl. Run make_tests.sh to regenerate.
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package User;
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class C {};
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impl C as Core.BitComplement where .Result = C {
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fn Op[self: C]() -> C {
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return {};
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}
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}
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fn TestOp(a: C) -> C {
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//@dump-sem-ir-begin
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return ^a;
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//@dump-sem-ir-end
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}
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// CHECK:STDOUT: --- bit_complement.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %C: type = class_type @C [concrete]
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// CHECK:STDOUT: %BitComplement.type: type = facet_type <@BitComplement> [concrete]
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// CHECK:STDOUT: %BitComplement.Op.type: type = fn_type @BitComplement.Op [concrete]
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// CHECK:STDOUT: %BitComplement.impl_witness: <witness> = impl_witness file.%BitComplement.impl_witness_table [concrete]
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// CHECK:STDOUT: %C.as.BitComplement.impl.Op.type: type = fn_type @C.as.BitComplement.impl.Op [concrete]
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// CHECK:STDOUT: %C.as.BitComplement.impl.Op: %C.as.BitComplement.impl.Op.type = struct_value () [concrete]
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// CHECK:STDOUT: %BitComplement.facet: %BitComplement.type = facet_value %C, (%BitComplement.impl_witness) [concrete]
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// CHECK:STDOUT: %.832: type = fn_type_with_self_type %BitComplement.Op.type, %BitComplement.facet [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @TestOp(%a.param: %C) -> %return.param: %C {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %a.ref: %C = name_ref a, %a
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// CHECK:STDOUT: %impl.elem1: %.832 = impl_witness_access constants.%BitComplement.impl_witness, element1 [concrete = constants.%C.as.BitComplement.impl.Op]
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// CHECK:STDOUT: %bound_method: <bound method> = bound_method %a.ref, %impl.elem1
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: %C.as.BitComplement.impl.Op.call: init %C = call %bound_method(%a.ref) to %.loc27
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// CHECK:STDOUT: return %C.as.BitComplement.impl.Op.call to %return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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