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carbon-lang/toolchain/check/testdata/function/generic/resolve_used.carbon
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Dana Jansens a0416a1250 Don't finish the non-canonical instruction created in EvalOrAddInst (#6972) 
EvalOrAddInst has to create a non-canonical instruction for evaluating a
few typed insts, such as LookupImplWitness which uses an InstId to
provide a location for diagnostics.

But the output of the function is a ConstantId. We do not have access to
the non-canonical InstId after the function returns. But if the constant
value was symbolic, it was being attached to the inst, and the inst
would be added to the eval block of the enclosing generic. This
needlessly added semir for a symbolic value.

The ConstantId returned by EvalOrAddInst can be used immediately, such
as to evaluate an ImplWitnessAccess. In that case, the final evaluated
result is all we need to keep in semir.

If the ConstantId needs to be replaced by specifics, it is only as part
of some other instruction, since ConstantIds themselves are not modified
by specifics, instructions are. In that case, the canonical instruction
in the constant value would have been added to some other (now symbolic)
instruction, which would be replaced by a specific.

This has no functional change, but it reduces runtime overhead and semir
output for LookupImplWitness and ImplWitnessAccess.
2026-03-27 19:29:34 +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/function/generic/resolve_used.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/generic/resolve_used.carbon
// --- fail_todo_call_monomorphization_error.carbon
library "[[@TEST_NAME]]";
fn ErrorIfNIsZero(N:! Core.IntLiteral()) {
// Check that we resolve the definition of a used specific function by
// ensuring we produce an error when doing so. Notionally this error is
// produced as a result of instantiating the `Core.Int` template, although
// that's not how we currently model `Core.Int`.
var unused v: Core.Int(N);
}
fn CallNegative() {
// CHECK:STDERR: fail_todo_call_monomorphization_error.carbon:[[@LINE+10]]:3: error: unable to monomorphize specific `ErrorIfNIsZero(0)` [ResolvingSpecificHere]
// CHECK:STDERR: ErrorIfNIsZero(0);
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_call_monomorphization_error.carbon:[[@LINE-7]]:17: note: `Core.Int(N)` evaluates to incomplete type `i0` [IncompleteTypeInMonomorphization]
// CHECK:STDERR: var unused v: Core.Int(N);
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: min_prelude/parts/int.carbon:11:9: note: integer type width of 0 is not positive [IntWidthNotPositive]
// CHECK:STDERR: adapt MakeInt(N);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
ErrorIfNIsZero(0);
}
// CHECK:STDOUT: --- fail_todo_call_monomorphization_error.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %IntLiteral.type: type = fn_type @IntLiteral [concrete]
// CHECK:STDOUT: %IntLiteral: %IntLiteral.type = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.dc0: type = pattern_type Core.IntLiteral [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %ErrorIfNIsZero.type: type = fn_type @ErrorIfNIsZero [concrete]
// CHECK:STDOUT: %ErrorIfNIsZero: %ErrorIfNIsZero.type = struct_value () [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %Int: type = class_type @Int, @Int(%N) [symbolic]
// CHECK:STDOUT: %require_complete.901: <witness> = require_complete_type %Int [symbolic]
// CHECK:STDOUT: %pattern_type.764: type = pattern_type %Int [symbolic]
// CHECK:STDOUT: %DefaultOrUnformed.type: type = facet_type <@DefaultOrUnformed> [concrete]
// CHECK:STDOUT: %T.67d: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.type.6c6: type = fn_type @T.as.DefaultOrUnformed.impl.Op, @T.as.DefaultOrUnformed.impl(%T.67d) [symbolic]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.ae1: %T.as.DefaultOrUnformed.impl.Op.type.6c6 = struct_value () [symbolic]
// CHECK:STDOUT: %DefaultOrUnformed.lookup_impl_witness: <witness> = lookup_impl_witness %Int, @DefaultOrUnformed [symbolic]
// CHECK:STDOUT: %.4a9: require_specific_def_type = require_specific_def @T.as.DefaultOrUnformed.impl(%Int) [symbolic]
// CHECK:STDOUT: %DefaultOrUnformed.facet.c82: %DefaultOrUnformed.type = facet_value %Int, (%DefaultOrUnformed.lookup_impl_witness) [symbolic]
// CHECK:STDOUT: %DefaultOrUnformed.WithSelf.Op.type.814: type = fn_type @DefaultOrUnformed.WithSelf.Op, @DefaultOrUnformed.WithSelf(%DefaultOrUnformed.facet.c82) [symbolic]
// CHECK:STDOUT: %.ca4: type = fn_type_with_self_type %DefaultOrUnformed.WithSelf.Op.type.814, %DefaultOrUnformed.facet.c82 [symbolic]
// CHECK:STDOUT: %impl.elem0.12f: %.ca4 = impl_witness_access %DefaultOrUnformed.lookup_impl_witness, element0 [symbolic]
// CHECK:STDOUT: %specific_impl_fn.f0d: <specific function> = specific_impl_function %impl.elem0.12f, @DefaultOrUnformed.WithSelf.Op(%DefaultOrUnformed.facet.c82) [symbolic]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Int, @Destroy [symbolic]
// CHECK:STDOUT: %Destroy.facet.1c0: %Destroy.type = facet_value %Int, (%Destroy.lookup_impl_witness) [symbolic]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type.297: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Destroy.facet.1c0) [symbolic]
// CHECK:STDOUT: %.e63: type = fn_type_with_self_type %Destroy.WithSelf.Op.type.297, %Destroy.facet.1c0 [symbolic]
// CHECK:STDOUT: %impl.elem0.602: %.e63 = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic]
// CHECK:STDOUT: %specific_impl_fn.d65: <specific function> = specific_impl_function %impl.elem0.602, @Destroy.WithSelf.Op(%Destroy.facet.1c0) [symbolic]
// CHECK:STDOUT: %CallNegative.type: type = fn_type @CallNegative [concrete]
// CHECK:STDOUT: %CallNegative: %CallNegative.type = struct_value () [concrete]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %ErrorIfNIsZero.specific_fn: <specific function> = specific_function %ErrorIfNIsZero, @ErrorIfNIsZero(%int_0) [concrete]
// CHECK:STDOUT: %i0: type = class_type @Int, @Int(%int_0) [concrete]
// CHECK:STDOUT: %pattern_type.47b: type = pattern_type %i0 [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.impl_witness.879: <witness> = impl_witness imports.%DefaultOrUnformed.impl_witness_table.349, @T.as.DefaultOrUnformed.impl(%i0) [concrete]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.type.7ec: type = fn_type @T.as.DefaultOrUnformed.impl.Op, @T.as.DefaultOrUnformed.impl(%i0) [concrete]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.5b7: %T.as.DefaultOrUnformed.impl.Op.type.7ec = struct_value () [concrete]
// CHECK:STDOUT: %.d6a: require_specific_def_type = require_specific_def @T.as.DefaultOrUnformed.impl(%i0) [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.facet.255: %DefaultOrUnformed.type = facet_value %i0, (%DefaultOrUnformed.impl_witness.879) [concrete]
// CHECK:STDOUT: %DefaultOrUnformed.WithSelf.Op.type.bd6: type = fn_type @DefaultOrUnformed.WithSelf.Op, @DefaultOrUnformed.WithSelf(%DefaultOrUnformed.facet.255) [concrete]
// CHECK:STDOUT: %.639: type = fn_type_with_self_type %DefaultOrUnformed.WithSelf.Op.type.bd6, %DefaultOrUnformed.facet.255 [concrete]
// CHECK:STDOUT: %T.as.DefaultOrUnformed.impl.Op.specific_fn: <specific function> = specific_function %T.as.DefaultOrUnformed.impl.Op.5b7, @T.as.DefaultOrUnformed.impl.Op(%i0) [concrete]
// CHECK:STDOUT: %Destroy.Op.type: type = fn_type @Destroy.Op [concrete]
// CHECK:STDOUT: %Destroy.Op: %Destroy.Op.type = struct_value () [concrete]
// CHECK:STDOUT: %custom_witness.8d7: <witness> = custom_witness (%Destroy.Op), @Destroy [concrete]
// CHECK:STDOUT: %Destroy.facet.eb2: %Destroy.type = facet_value %i0, (%custom_witness.8d7) [concrete]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type.cef: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Destroy.facet.eb2) [concrete]
// CHECK:STDOUT: %.98d: type = fn_type_with_self_type %Destroy.WithSelf.Op.type.cef, %Destroy.facet.eb2 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .IntLiteral = %Core.IntLiteral
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .DefaultOrUnformed = %Core.DefaultOrUnformed
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.IntLiteral: %IntLiteral.type = import_ref Core//prelude/parts/int_literal, IntLiteral, loaded [concrete = constants.%IntLiteral]
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.DefaultOrUnformed: type = import_ref Core//prelude/parts/default, DefaultOrUnformed, loaded [concrete = constants.%DefaultOrUnformed.type]
// CHECK:STDOUT: %Core.import_ref.01d: @T.as.DefaultOrUnformed.impl.%T.as.DefaultOrUnformed.impl.Op.type (%T.as.DefaultOrUnformed.impl.Op.type.6c6) = import_ref Core//prelude/parts/default, loc{{\d+_\d+}}, loaded [symbolic = @T.as.DefaultOrUnformed.impl.%T.as.DefaultOrUnformed.impl.Op (constants.%T.as.DefaultOrUnformed.impl.Op.ae1)]
// CHECK:STDOUT: %DefaultOrUnformed.impl_witness_table.349 = impl_witness_table (%Core.import_ref.01d), @T.as.DefaultOrUnformed.impl [concrete]
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .ErrorIfNIsZero = %ErrorIfNIsZero.decl
// CHECK:STDOUT: .CallNegative = %CallNegative.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %ErrorIfNIsZero.decl: %ErrorIfNIsZero.type = fn_decl @ErrorIfNIsZero [concrete = constants.%ErrorIfNIsZero] {
// CHECK:STDOUT: %N.patt: %pattern_type.dc0 = symbolic_binding_pattern N, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc4_39.1: type = splice_block %.loc4_39.3 [concrete = Core.IntLiteral] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Core.ref.loc4: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %IntLiteral.ref: %IntLiteral.type = name_ref IntLiteral, imports.%Core.IntLiteral [concrete = constants.%IntLiteral]
// CHECK:STDOUT: %IntLiteral.call: init type = call %IntLiteral.ref() [concrete = Core.IntLiteral]
// CHECK:STDOUT: %.loc4_39.2: type = value_of_initializer %IntLiteral.call [concrete = Core.IntLiteral]
// CHECK:STDOUT: %.loc4_39.3: type = converted %IntLiteral.call, %.loc4_39.2 [concrete = Core.IntLiteral]
// CHECK:STDOUT: }
// CHECK:STDOUT: %N.loc4_20.2: Core.IntLiteral = symbolic_binding N, 0 [symbolic = %N.loc4_20.1 (constants.%N)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %CallNegative.decl: %CallNegative.type = fn_decl @CallNegative [concrete = constants.%CallNegative] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @ErrorIfNIsZero(%N.loc4_20.2: Core.IntLiteral) {
// CHECK:STDOUT: %N.loc4_20.1: Core.IntLiteral = symbolic_binding N, 0 [symbolic = %N.loc4_20.1 (constants.%N)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Int.loc9_27.2: type = class_type @Int, @Int(%N.loc4_20.1) [symbolic = %Int.loc9_27.2 (constants.%Int)]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %Int.loc9_27.2 [symbolic = %require_complete (constants.%require_complete.901)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %Int.loc9_27.2 [symbolic = %pattern_type (constants.%pattern_type.764)]
// CHECK:STDOUT: %.loc9_28.3: require_specific_def_type = require_specific_def @T.as.DefaultOrUnformed.impl(%Int.loc9_27.2) [symbolic = %.loc9_28.3 (constants.%.4a9)]
// CHECK:STDOUT: %DefaultOrUnformed.lookup_impl_witness: <witness> = lookup_impl_witness %Int.loc9_27.2, @DefaultOrUnformed [symbolic = %DefaultOrUnformed.lookup_impl_witness (constants.%DefaultOrUnformed.lookup_impl_witness)]
// CHECK:STDOUT: %DefaultOrUnformed.facet.loc9_28.2: %DefaultOrUnformed.type = facet_value %Int.loc9_27.2, (%DefaultOrUnformed.lookup_impl_witness) [symbolic = %DefaultOrUnformed.facet.loc9_28.2 (constants.%DefaultOrUnformed.facet.c82)]
// CHECK:STDOUT: %DefaultOrUnformed.WithSelf.Op.type: type = fn_type @DefaultOrUnformed.WithSelf.Op, @DefaultOrUnformed.WithSelf(%DefaultOrUnformed.facet.loc9_28.2) [symbolic = %DefaultOrUnformed.WithSelf.Op.type (constants.%DefaultOrUnformed.WithSelf.Op.type.814)]
// CHECK:STDOUT: %.loc9_28.4: type = fn_type_with_self_type %DefaultOrUnformed.WithSelf.Op.type, %DefaultOrUnformed.facet.loc9_28.2 [symbolic = %.loc9_28.4 (constants.%.ca4)]
// CHECK:STDOUT: %impl.elem0.loc9_28.2: @ErrorIfNIsZero.%.loc9_28.4 (%.ca4) = impl_witness_access %DefaultOrUnformed.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc9_28.2 (constants.%impl.elem0.12f)]
// CHECK:STDOUT: %specific_impl_fn.loc9_28.2: <specific function> = specific_impl_function %impl.elem0.loc9_28.2, @DefaultOrUnformed.WithSelf.Op(%DefaultOrUnformed.facet.loc9_28.2) [symbolic = %specific_impl_fn.loc9_28.2 (constants.%specific_impl_fn.f0d)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Int.loc9_27.2, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %Destroy.facet: %Destroy.type = facet_value %Int.loc9_27.2, (%Destroy.lookup_impl_witness) [symbolic = %Destroy.facet (constants.%Destroy.facet.1c0)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Destroy.facet) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.297)]
// CHECK:STDOUT: %.loc9_3: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Destroy.facet [symbolic = %.loc9_3 (constants.%.e63)]
// CHECK:STDOUT: %impl.elem0.loc9_3.2: @ErrorIfNIsZero.%.loc9_3 (%.e63) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc9_3.2 (constants.%impl.elem0.602)]
// CHECK:STDOUT: %specific_impl_fn.loc9_3.2: <specific function> = specific_impl_function %impl.elem0.loc9_3.2, @Destroy.WithSelf.Op(%Destroy.facet) [symbolic = %specific_impl_fn.loc9_3.2 (constants.%specific_impl_fn.d65)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %v.patt: @ErrorIfNIsZero.%pattern_type (%pattern_type.764) = ref_binding_pattern v [concrete]
// CHECK:STDOUT: %v.var_patt: @ErrorIfNIsZero.%pattern_type (%pattern_type.764) = var_pattern %v.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %v.var: ref @ErrorIfNIsZero.%Int.loc9_27.2 (%Int) = var %v.var_patt
// CHECK:STDOUT: %DefaultOrUnformed.facet.loc9_28.1: %DefaultOrUnformed.type = facet_value constants.%Int, (constants.%DefaultOrUnformed.lookup_impl_witness) [symbolic = %DefaultOrUnformed.facet.loc9_28.2 (constants.%DefaultOrUnformed.facet.c82)]
// CHECK:STDOUT: %.loc9_28.1: %DefaultOrUnformed.type = converted constants.%Int, %DefaultOrUnformed.facet.loc9_28.1 [symbolic = %DefaultOrUnformed.facet.loc9_28.2 (constants.%DefaultOrUnformed.facet.c82)]
// CHECK:STDOUT: %as_type: type = facet_access_type %.loc9_28.1 [symbolic = %Int.loc9_27.2 (constants.%Int)]
// CHECK:STDOUT: %.loc9_28.2: type = converted %.loc9_28.1, %as_type [symbolic = %Int.loc9_27.2 (constants.%Int)]
// CHECK:STDOUT: %impl.elem0.loc9_28.1: @ErrorIfNIsZero.%.loc9_28.4 (%.ca4) = impl_witness_access constants.%DefaultOrUnformed.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc9_28.2 (constants.%impl.elem0.12f)]
// CHECK:STDOUT: %specific_impl_fn.loc9_28.1: <specific function> = specific_impl_function %impl.elem0.loc9_28.1, @DefaultOrUnformed.WithSelf.Op(constants.%DefaultOrUnformed.facet.c82) [symbolic = %specific_impl_fn.loc9_28.2 (constants.%specific_impl_fn.f0d)]
// CHECK:STDOUT: %DefaultOrUnformed.WithSelf.Op.call: init @ErrorIfNIsZero.%Int.loc9_27.2 (%Int) = call %specific_impl_fn.loc9_28.1()
// CHECK:STDOUT: assign %v.var, %DefaultOrUnformed.WithSelf.Op.call
// CHECK:STDOUT: %.loc9_27: type = splice_block %Int.loc9_27.1 [symbolic = %Int.loc9_27.2 (constants.%Int)] {
// CHECK:STDOUT: %Core.ref.loc9: <namespace> = name_ref Core, imports.%Core [concrete = imports.%Core]
// CHECK:STDOUT: %Int.ref: %Int.type = name_ref Int, imports.%Core.Int [concrete = constants.%Int.generic]
// CHECK:STDOUT: %N.ref: Core.IntLiteral = name_ref N, %N.loc4_20.2 [symbolic = %N.loc4_20.1 (constants.%N)]
// CHECK:STDOUT: %Int.loc9_27.1: type = class_type @Int, @Int(constants.%N) [symbolic = %Int.loc9_27.2 (constants.%Int)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %v: ref @ErrorIfNIsZero.%Int.loc9_27.2 (%Int) = ref_binding v, %v.var
// CHECK:STDOUT: %impl.elem0.loc9_3.1: @ErrorIfNIsZero.%.loc9_3 (%.e63) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc9_3.2 (constants.%impl.elem0.602)]
// CHECK:STDOUT: %bound_method.loc9_3.1: <bound method> = bound_method %v.var, %impl.elem0.loc9_3.1
// CHECK:STDOUT: %specific_impl_fn.loc9_3.1: <specific function> = specific_impl_function %impl.elem0.loc9_3.1, @Destroy.WithSelf.Op(constants.%Destroy.facet.1c0) [symbolic = %specific_impl_fn.loc9_3.2 (constants.%specific_impl_fn.d65)]
// CHECK:STDOUT: %bound_method.loc9_3.2: <bound method> = bound_method %v.var, %specific_impl_fn.loc9_3.1
// CHECK:STDOUT: %Destroy.WithSelf.Op.call: init %empty_tuple.type = call %bound_method.loc9_3.2(%v.var)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallNegative() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %ErrorIfNIsZero.ref: %ErrorIfNIsZero.type = name_ref ErrorIfNIsZero, file.%ErrorIfNIsZero.decl [concrete = constants.%ErrorIfNIsZero]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: %ErrorIfNIsZero.specific_fn: <specific function> = specific_function %ErrorIfNIsZero.ref, @ErrorIfNIsZero(constants.%int_0) [concrete = constants.%ErrorIfNIsZero.specific_fn]
// CHECK:STDOUT: %ErrorIfNIsZero.call: init %empty_tuple.type = call %ErrorIfNIsZero.specific_fn()
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Destroy.Op(%self.param: ref %i0) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ErrorIfNIsZero(constants.%N) {
// CHECK:STDOUT: %N.loc4_20.1 => constants.%N
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @ErrorIfNIsZero(constants.%int_0) {
// CHECK:STDOUT: %N.loc4_20.1 => constants.%int_0
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Int.loc9_27.2 => constants.%i0
// CHECK:STDOUT: %require_complete => <error>
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.47b
// CHECK:STDOUT: %.loc9_28.3 => constants.%.d6a
// CHECK:STDOUT: %DefaultOrUnformed.lookup_impl_witness => constants.%DefaultOrUnformed.impl_witness.879
// CHECK:STDOUT: %DefaultOrUnformed.facet.loc9_28.2 => constants.%DefaultOrUnformed.facet.255
// CHECK:STDOUT: %DefaultOrUnformed.WithSelf.Op.type => constants.%DefaultOrUnformed.WithSelf.Op.type.bd6
// CHECK:STDOUT: %.loc9_28.4 => constants.%.639
// CHECK:STDOUT: %impl.elem0.loc9_28.2 => constants.%T.as.DefaultOrUnformed.impl.Op.5b7
// CHECK:STDOUT: %specific_impl_fn.loc9_28.2 => constants.%T.as.DefaultOrUnformed.impl.Op.specific_fn
// CHECK:STDOUT: %Destroy.lookup_impl_witness => constants.%custom_witness.8d7
// CHECK:STDOUT: %Destroy.facet => constants.%Destroy.facet.eb2
// CHECK:STDOUT: %Destroy.WithSelf.Op.type => constants.%Destroy.WithSelf.Op.type.cef
// CHECK:STDOUT: %.loc9_3 => constants.%.98d
// CHECK:STDOUT: %impl.elem0.loc9_3.2 => constants.%Destroy.Op
// CHECK:STDOUT: %specific_impl_fn.loc9_3.2 => constants.%Destroy.Op
// CHECK:STDOUT: }
// CHECK:STDOUT:
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