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10e256a241ce99036466070e41271f7ddd827596
carbon-lang/toolchain/check/testdata/const/fail_collapse.carbon
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Jon Ross-Perkins 10e256a241 Name empty tuples distinctly in SemIR. (#4503) 
Building on #4502, give empty tuple values a distinct name, and also
explicitly name tuple types (previously values but not types were
named).
2024-11-08 17:14:52 +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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/const/fail_collapse.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/const/fail_collapse.carbon
// CHECK:STDERR: fail_collapse.carbon:[[@LINE+4]]:9: warning: `const` applied repeatedly to the same type has no additional effect [RepeatedConst]
// CHECK:STDERR: fn G(p: const (const i32)**) -> i32** {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
// CHECK:STDERR:
fn G(p: const (const i32)**) -> i32** {
// CHECK:STDERR: fail_collapse.carbon:[[@LINE+6]]:3: error: cannot implicitly convert from `const i32**` to `i32**` [ImplicitAsConversionFailure]
// CHECK:STDERR: return p;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_collapse.carbon:[[@LINE+3]]:3: note: type `const i32**` does not implement interface `ImplicitAs` [MissingImplInMemberAccessNote]
// CHECK:STDERR: return p;
// CHECK:STDERR: ^~~~~~~~~
return p;
}
// CHECK:STDOUT: --- fail_collapse.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %.1: type = const_type i32 [template]
// CHECK:STDOUT: %.2: type = ptr_type %.1 [template]
// CHECK:STDOUT: %.3: type = ptr_type %.2 [template]
// CHECK:STDOUT: %.4: type = ptr_type i32 [template]
// CHECK:STDOUT: %.5: type = ptr_type %.4 [template]
// CHECK:STDOUT: %G.type: type = fn_type @G [template]
// CHECK:STDOUT: %G: %G.type = struct_value () [template]
// CHECK:STDOUT: %ImplicitAs.type.1: type = generic_interface_type @ImplicitAs [template]
// CHECK:STDOUT: %ImplicitAs: %ImplicitAs.type.1 = struct_value () [template]
// CHECK:STDOUT: %Dest: type = bind_symbolic_name Dest, 0 [symbolic]
// CHECK:STDOUT: %ImplicitAs.type.2: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic]
// CHECK:STDOUT: %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2) = bind_symbolic_name Self, 1 [symbolic]
// CHECK:STDOUT: %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic]
// CHECK:STDOUT: %Self.2: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic]
// CHECK:STDOUT: %Convert.type.1: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic]
// CHECK:STDOUT: %Convert.1: %Convert.type.1 = struct_value () [symbolic]
// CHECK:STDOUT: %.6: type = assoc_entity_type %ImplicitAs.type.2, %Convert.type.1 [symbolic]
// CHECK:STDOUT: %.7: %.6 = assoc_entity element0, imports.%import_ref.6 [symbolic]
// CHECK:STDOUT: %ImplicitAs.type.3: type = interface_type @ImplicitAs, @ImplicitAs(%.5) [template]
// CHECK:STDOUT: %Convert.type.2: type = fn_type @Convert, @ImplicitAs(%.5) [template]
// CHECK:STDOUT: %Convert.2: %Convert.type.2 = struct_value () [template]
// CHECK:STDOUT: %.8: type = assoc_entity_type %ImplicitAs.type.3, %Convert.type.2 [template]
// CHECK:STDOUT: %.9: %.8 = assoc_entity element0, imports.%import_ref.6 [template]
// CHECK:STDOUT: %.10: %.6 = assoc_entity element0, imports.%import_ref.7 [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref.1
// CHECK:STDOUT: .ImplicitAs = %import_ref.2
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
// CHECK:STDOUT: %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
// CHECK:STDOUT: %import_ref.3 = import_ref Core//prelude/operators/as, inst+55, unloaded
// CHECK:STDOUT: %import_ref.4: @ImplicitAs.%.1 (%.6) = import_ref Core//prelude/operators/as, inst+77, loaded [symbolic = @ImplicitAs.%.2 (constants.%.10)]
// CHECK:STDOUT: %import_ref.5 = import_ref Core//prelude/operators/as, inst+70, unloaded
// CHECK:STDOUT: %import_ref.6 = import_ref Core//prelude/operators/as, inst+70, unloaded
// CHECK:STDOUT: %import_ref.7 = import_ref Core//prelude/operators/as, inst+70, unloaded
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .G = %G.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [template = constants.%G] {
// CHECK:STDOUT: %p.patt: %.3 = binding_pattern p
// CHECK:STDOUT: %p.param_patt: %.3 = value_param_pattern %p.patt, runtime_param0
// CHECK:STDOUT: %return.patt: %.5 = return_slot_pattern
// CHECK:STDOUT: %return.param_patt: %.5 = out_param_pattern %return.patt, runtime_param1
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int.make_type_32.loc15_22: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc15_16.1: type = value_of_initializer %int.make_type_32.loc15_22 [template = i32]
// CHECK:STDOUT: %.loc15_16.2: type = converted %int.make_type_32.loc15_22, %.loc15_16.1 [template = i32]
// CHECK:STDOUT: %.loc15_16.3: type = const_type i32 [template = constants.%.1]
// CHECK:STDOUT: %.loc15_9: type = const_type %.1 [template = constants.%.1]
// CHECK:STDOUT: %.loc15_26: type = ptr_type %.1 [template = constants.%.2]
// CHECK:STDOUT: %.loc15_27: type = ptr_type %.2 [template = constants.%.3]
// CHECK:STDOUT: %int.make_type_32.loc15_33: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc15_36.1: type = value_of_initializer %int.make_type_32.loc15_33 [template = i32]
// CHECK:STDOUT: %.loc15_36.2: type = converted %int.make_type_32.loc15_33, %.loc15_36.1 [template = i32]
// CHECK:STDOUT: %.loc15_36.3: type = ptr_type i32 [template = constants.%.4]
// CHECK:STDOUT: %.loc15_37: type = ptr_type %.4 [template = constants.%.5]
// CHECK:STDOUT: %p.param: %.3 = value_param runtime_param0
// CHECK:STDOUT: %p: %.3 = bind_name p, %p.param
// CHECK:STDOUT: %return.param: ref %.5 = out_param runtime_param1
// CHECK:STDOUT: %return: ref %.5 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic interface @ImplicitAs(constants.%Dest: type) {
// CHECK:STDOUT: %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
// CHECK:STDOUT: %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt (constants.%Dest.patt)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %ImplicitAs.type: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.2)]
// CHECK:STDOUT: %Self: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.2)]
// CHECK:STDOUT: %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic = %Convert.type (constants.%Convert.type.1)]
// CHECK:STDOUT: %Convert: @ImplicitAs.%Convert.type (%Convert.type.1) = struct_value () [symbolic = %Convert (constants.%Convert.1)]
// CHECK:STDOUT: %.1: type = assoc_entity_type @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2), @ImplicitAs.%Convert.type (%Convert.type.1) [symbolic = %.1 (constants.%.6)]
// CHECK:STDOUT: %.2: @ImplicitAs.%.1 (%.6) = assoc_entity element0, imports.%import_ref.6 [symbolic = %.2 (constants.%.7)]
// CHECK:STDOUT:
// CHECK:STDOUT: interface {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = imports.%import_ref.3
// CHECK:STDOUT: .Convert = imports.%import_ref.4
// CHECK:STDOUT: witness = (imports.%import_ref.5)
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G(%p.param_patt: %.3) -> %.5 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %p.ref: %.3 = name_ref p, %p
// CHECK:STDOUT: %.loc22: %.5 = converted %p.ref, <error> [template = <error>]
// CHECK:STDOUT: return <error>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Convert(constants.%Dest: type, constants.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2)) {
// CHECK:STDOUT: %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
// CHECK:STDOUT: %ImplicitAs.type: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.2)]
// CHECK:STDOUT: %Self: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.2)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn[%self.param_patt: @Convert.%Self (%Self.2)]() -> @Convert.%Dest (%Dest);
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
// CHECK:STDOUT: %Dest => constants.%Dest
// CHECK:STDOUT: %Dest.patt => constants.%Dest
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ImplicitAs(@ImplicitAs.%Dest) {
// CHECK:STDOUT: %Dest => constants.%Dest
// CHECK:STDOUT: %Dest.patt => constants.%Dest
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ImplicitAs(@Convert.%Dest) {
// CHECK:STDOUT: %Dest => constants.%Dest
// CHECK:STDOUT: %Dest.patt => constants.%Dest
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Convert(constants.%Dest, constants.%Self.1) {
// CHECK:STDOUT: %Dest => constants.%Dest
// CHECK:STDOUT: %ImplicitAs.type => constants.%ImplicitAs.type.2
// CHECK:STDOUT: %Self => constants.%Self.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ImplicitAs(constants.%.5) {
// CHECK:STDOUT: %Dest => constants.%.5
// CHECK:STDOUT: %Dest.patt => constants.%.5
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %ImplicitAs.type => constants.%ImplicitAs.type.3
// CHECK:STDOUT: %Self => constants.%Self.2
// CHECK:STDOUT: %Convert.type => constants.%Convert.type.2
// CHECK:STDOUT: %Convert => constants.%Convert.2
// CHECK:STDOUT: %.1 => constants.%.8
// CHECK:STDOUT: %.2 => constants.%.9
// CHECK:STDOUT: }
// CHECK:STDOUT:
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