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carbon-lang/toolchain/check/testdata/impl/fail_call_invalid.carbon
T
Geoff RomerandRichard Smith e023f75254 Implement thunking in terms of constant evaluation (#7332) 
The bulk of this change is changing most pattern insts to be `Always`
rather than `AlwaysUnique` constants, so that they can be wrapped in
`SpecificConstant`s to perform substitution. That then lets thunking
rely much more on `SpecificConstant` wrappers instead of deep-copying
the inst tree with modified types.

This approach to thunking should scale better, particularly as things
like form generics make function signatures more complex, because we can
leverage the existing support for constant evaluation and substitution.
Unfortunately, applying this approach to binding patterns will require
more work; see the TODO near the top of `thunk.cpp` for details.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2026-06-13 00:22:00 +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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.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/impl/fail_call_invalid.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/fail_call_invalid.carbon
interface Simple {
fn G(self);
}
impl i32 as Simple {
// CHECK:STDERR: fail_call_invalid.carbon:[[@LINE+4]]:14: error: name `Undeclared` not found [NameNotFound]
// CHECK:STDERR: fn G(self: Undeclared);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
fn G(self: Undeclared);
}
fn InstanceCall(n: i32) {
n.(Simple.G)();
}
// CHECK:STDOUT: --- fail_call_invalid.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Simple.type: type = facet_type <@Simple> [concrete]
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT: %Self.as_type: type = facet_access_type %Self [symbolic]
// CHECK:STDOUT: %pattern_type.c62: type = pattern_type %Self.as_type [symbolic]
// CHECK:STDOUT: %self.param_patt.b93: %pattern_type.c62 = value_param_pattern [symbolic]
// CHECK:STDOUT: %self.patt.b30: %pattern_type.c62 = at_binding_pattern self, %self.param_patt.b93 [symbolic]
// CHECK:STDOUT: %Simple.WithSelf.G.type.682: type = fn_type @Simple.WithSelf.G, @Simple.WithSelf(%Self) [symbolic]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.d0a: %Simple.WithSelf.G.type.682 = struct_value () [symbolic]
// CHECK:STDOUT: %Simple.assoc_type: type = assoc_entity_type @Simple [concrete]
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, @Simple.WithSelf.%Simple.WithSelf.G.decl [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness @i32.as.Simple.impl.%Simple.impl_witness_table [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.type.321a2c.1: type = fn_type @i32.as.Simple.impl.G.loc24_25.1 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.d407b2.1: %i32.as.Simple.impl.G.type.321a2c.1 = struct_value () [concrete]
// CHECK:STDOUT: %Simple.facet: %Simple.type = facet_value %i32, (%Simple.impl_witness) [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.type.780: type = fn_type @Simple.WithSelf.G, @Simple.WithSelf(%Simple.facet) [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.dbb: %Simple.WithSelf.G.type.780 = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.6b6: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %self.param_patt.049: %pattern_type.6b6 = value_param_pattern [concrete]
// CHECK:STDOUT: %self.patt.f6c: %pattern_type.6b6 = at_binding_pattern self, %self.param_patt.049 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.type.321a2c.2: type = fn_type @i32.as.Simple.impl.G.loc24_25.2 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.d407b2.2: %i32.as.Simple.impl.G.type.321a2c.2 = struct_value () [concrete]
// CHECK:STDOUT: %n.param_patt: %pattern_type.6b6 = value_param_pattern [concrete]
// CHECK:STDOUT: %n.patt: %pattern_type.6b6 = at_binding_pattern n, %n.param_patt [concrete]
// CHECK:STDOUT: %InstanceCall.type: type = fn_type @InstanceCall [concrete]
// CHECK:STDOUT: %InstanceCall: %InstanceCall.type = struct_value () [concrete]
// CHECK:STDOUT: %.785: type = fn_type_with_self_type %Simple.WithSelf.G.type.780, %Simple.facet [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Simple = %Simple.decl
// CHECK:STDOUT: .Undeclared = <poisoned>
// CHECK:STDOUT: .InstanceCall = %InstanceCall.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Simple.decl: type = interface_decl @Simple [concrete = constants.%Simple.type] {} {}
// CHECK:STDOUT: impl_decl @i32.as.Simple.impl [concrete] {} {
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %InstanceCall.decl: %InstanceCall.type = fn_decl @InstanceCall [concrete = constants.%InstanceCall] {
// CHECK:STDOUT: %n.param_patt: %pattern_type.6b6 = value_param_pattern [concrete = constants.%n.param_patt]
// CHECK:STDOUT: %n.patt: %pattern_type.6b6 = at_binding_pattern n, %n.param_patt [concrete = constants.%n.patt]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %n.param: %i32 = value_param call_param0
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %n: %i32 = value_binding n, %n.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Simple {
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT: %Simple.WithSelf.decl = interface_with_self_decl @Simple [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !with Self:
// CHECK:STDOUT: %Simple.WithSelf.G.decl: @Simple.WithSelf.%Simple.WithSelf.G.type (%Simple.WithSelf.G.type.682) = fn_decl @Simple.WithSelf.G [symbolic = @Simple.WithSelf.%Simple.WithSelf.G (constants.%Simple.WithSelf.G.d0a)] {
// CHECK:STDOUT: %self.param_patt.loc16_8.1: @Simple.WithSelf.G.%pattern_type (%pattern_type.c62) = value_param_pattern [symbolic = %self.param_patt.loc16_8.2 (constants.%self.param_patt.b93)]
// CHECK:STDOUT: %self.patt.loc16_8.1: @Simple.WithSelf.G.%pattern_type (%pattern_type.c62) = at_binding_pattern self, %self.param_patt.loc16_8.1 [symbolic = %self.patt.loc16_8.2 (constants.%self.patt.b30)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: @Simple.WithSelf.G.%Self.as_type.loc16_8.1 (%Self.as_type) = value_param call_param0
// CHECK:STDOUT: %.loc16_8.1: type = splice_block %.loc16_8.2 [symbolic = %Self.as_type.loc16_8.1 (constants.%Self.as_type)] {
// CHECK:STDOUT: %Self.ref: %Simple.type = name_ref Self, @Simple.%Self [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.as_type.loc16_8.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc16_8.1 (constants.%Self.as_type)]
// CHECK:STDOUT: %.loc16_8.2: type = converted %Self.ref, %Self.as_type.loc16_8.2 [symbolic = %Self.as_type.loc16_8.1 (constants.%Self.as_type)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self: @Simple.WithSelf.G.%Self.as_type.loc16_8.1 (%Self.as_type) = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, %Simple.WithSelf.G.decl [concrete = constants.%assoc0]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: .G = @Simple.WithSelf.%assoc0
// CHECK:STDOUT: .Undeclared = <poisoned>
// CHECK:STDOUT: witness = (@Simple.WithSelf.%Simple.WithSelf.G.decl)
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @i32.as.Simple.impl: %i32 as %Simple.ref {
// CHECK:STDOUT: %i32.as.Simple.impl.G.decl.loc24_25.1: %i32.as.Simple.impl.G.type.321a2c.1 = fn_decl @i32.as.Simple.impl.G.loc24_25.1 [concrete = constants.%i32.as.Simple.impl.G.d407b2.1] {
// CHECK:STDOUT: %self.param_patt: <error> = value_param_pattern [concrete = <error>]
// CHECK:STDOUT: %self.patt: <error> = at_binding_pattern self, %self.param_patt [concrete = <error>]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: <error> = value_param call_param0
// CHECK:STDOUT: %Undeclared.ref: <error> = name_ref Undeclared, <error> [concrete = <error>]
// CHECK:STDOUT: %self: <error> = value_binding self, <error> [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT: %i32.as.Simple.impl.G.decl.loc24_25.2: %i32.as.Simple.impl.G.type.321a2c.2 = fn_decl @i32.as.Simple.impl.G.loc24_25.2 [concrete = constants.%i32.as.Simple.impl.G.d407b2.2] {
// CHECK:STDOUT: %.1: %pattern_type.6b6 = specific_constant constants.%self.param_patt.049, @Simple.WithSelf.G(constants.%Simple.facet) [concrete = constants.%self.param_patt.049]
// CHECK:STDOUT: %self.patt: %pattern_type.6b6 = at_binding_pattern self, %.1 [concrete = constants.%self.patt.f6c]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: %i32 = value_param call_param0
// CHECK:STDOUT: %self: %i32 = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Simple.impl_witness_table = impl_witness_table (%i32.as.Simple.impl.G.decl.loc24_25.2), @i32.as.Simple.impl [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness %Simple.impl_witness_table [concrete = constants.%Simple.impl_witness]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Undeclared = <poisoned>
// CHECK:STDOUT: .G = %i32.as.Simple.impl.G.decl.loc24_25.1
// CHECK:STDOUT: extend %Simple.ref
// CHECK:STDOUT: witness = %Simple.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Simple.WithSelf.G(@Simple.%Self: %Simple.type) {
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.as_type.loc16_8.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc16_8.1 (constants.%Self.as_type)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %Self.as_type.loc16_8.1 [symbolic = %pattern_type (constants.%pattern_type.c62)]
// CHECK:STDOUT: %self.param_patt.loc16_8.2: @Simple.WithSelf.G.%pattern_type (%pattern_type.c62) = value_param_pattern [symbolic = %self.param_patt.loc16_8.2 (constants.%self.param_patt.b93)]
// CHECK:STDOUT: %self.patt.loc16_8.2: @Simple.WithSelf.G.%pattern_type (%pattern_type.c62) = at_binding_pattern self, %self.param_patt.loc16_8.2 [symbolic = %self.patt.loc16_8.2 (constants.%self.patt.b30)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%self.param: @Simple.WithSelf.G.%Self.as_type.loc16_8.1 (%Self.as_type));
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @i32.as.Simple.impl.G.loc24_25.1(%self.param: <error>);
// CHECK:STDOUT:
// CHECK:STDOUT: fn @i32.as.Simple.impl.G.loc24_25.2(%self.param: %i32) [thunk @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_25.1 for @Simple.WithSelf.%Simple.WithSelf.G.decl, @Simple.WithSelf.G(constants.%Simple.facet)] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %G.ref: %i32.as.Simple.impl.G.type.321a2c.1 = name_ref G, @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_25.1 [concrete = constants.%i32.as.Simple.impl.G.d407b2.1]
// CHECK:STDOUT: %i32.as.Simple.impl.G.bound: <bound method> = bound_method %self.param, %G.ref
// CHECK:STDOUT: %i32.as.Simple.impl.G.call: init %empty_tuple.type = call %i32.as.Simple.impl.G.bound(<error>)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @InstanceCall(%n.param: %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %n.ref: %i32 = name_ref n, %n
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: %G.ref.loc28_12: %Simple.assoc_type = name_ref G, @Simple.WithSelf.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %impl.elem0: %.785 = impl_witness_access constants.%Simple.impl_witness, element0 [concrete = constants.%i32.as.Simple.impl.G.d407b2.2]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %n.ref, %impl.elem0
// CHECK:STDOUT: %G.ref.loc28_16: %i32.as.Simple.impl.G.type.321a2c.1 = name_ref G, @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_25.1 [concrete = constants.%i32.as.Simple.impl.G.d407b2.1]
// CHECK:STDOUT: %i32.as.Simple.impl.G.bound: <bound method> = bound_method %n.ref, %G.ref.loc28_16
// CHECK:STDOUT: %i32.as.Simple.impl.G.call: init %empty_tuple.type = call %i32.as.Simple.impl.G.bound(<error>)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf(constants.%Self) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %Simple.WithSelf.G.type => constants.%Simple.WithSelf.G.type.682
// CHECK:STDOUT: %Simple.WithSelf.G => constants.%Simple.WithSelf.G.d0a
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf.G(constants.%Self) {
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %Self.as_type.loc16_8.1 => constants.%Self.as_type
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.c62
// CHECK:STDOUT: %self.param_patt.loc16_8.2 => constants.%self.param_patt.b93
// CHECK:STDOUT: %self.patt.loc16_8.2 => constants.%self.patt.b30
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf(constants.%Simple.facet) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self => constants.%Simple.facet
// CHECK:STDOUT: %Simple.WithSelf.G.type => constants.%Simple.WithSelf.G.type.780
// CHECK:STDOUT: %Simple.WithSelf.G => constants.%Simple.WithSelf.G.dbb
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf.G(constants.%Simple.facet) {
// CHECK:STDOUT: %Self => constants.%Simple.facet
// CHECK:STDOUT: %Self.as_type.loc16_8.1 => constants.%i32
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.6b6
// CHECK:STDOUT: %self.param_patt.loc16_8.2 => constants.%self.param_patt.049
// CHECK:STDOUT: %self.patt.loc16_8.2 => constants.%self.patt.f6c
// CHECK:STDOUT: }
// CHECK:STDOUT:
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