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carbon-lang/toolchain/check/testdata/impl/impl_assoc_const.carbon
T
Jon Ross-Perkins 7ccc1e0144 Expand naming for impls and functions (#5808)
Change impls from `<interface>.impl` to `<self>.as.<interface>.impl`,
and *member* functions to `<parent scope>.<fn>` (non-member functions
exclude their parent scope). Stop special-casing builtin functions,
given the new naming scheme.

The purpose of this is to make it clearer when a member function is
being accessed and, if so, which member function. In particular, we
often access interface `Op` functions. The builtin function
special-casing was intended to help with that, but we still have lots of
`Op` functions. This particular approach should make the interactions
clearer.

This changes up queueing of block IDs a little because, in particular,
we need to process bodies of entities only after constants finish
processing. But, it should also result in less memory usage during
processing because it means we have less on the insts stack at any given
time, since we track a block rather than all instructions contained by
the block.
2025-07-21 18:45:07 +00:00

475 lines
26 KiB
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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/none.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/impl_assoc_const.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/impl_assoc_const.carbon
// --- success.carbon
library "[[@TEST_NAME]]";
interface I { let T:! type; }
impl () as I where .T = {} {}
// --- success_associated.carbon
library "[[@TEST_NAME]]";
interface I { let T:! type; let U:! type; }
impl () as I where .T = .U and .U = {} {}
// --- redecl.carbon
library "[[@TEST_NAME]]";
interface I2 { let T2:! type; }
impl () as I2 where .T2 = {};
impl () as I2 where .T2 = {} {}
// --- fail_redecl_adds_rewrites.carbon
library "[[@TEST_NAME]]";
interface I3 { let T3:! type; }
// CHECK:STDERR: fail_redecl_adds_rewrites.carbon:[[@LINE+4]]:1: error: impl declared but not defined [ImplMissingDefinition]
// CHECK:STDERR: impl () as I3;
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as I3;
impl () as I3 where .T3 = {} {}
// --- fail_mismatch.carbon
library "[[@TEST_NAME]]";
interface J { let U:! type; }
// CHECK:STDERR: fail_mismatch.carbon:[[@LINE+4]]:1: error: impl declared but not defined [ImplMissingDefinition]
// CHECK:STDERR: impl () as J where .U = {};
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as J where .U = {};
impl () as J where .U = () {}
// --- fail_mismatch_bad_value.carbon
library "[[@TEST_NAME]]";
interface I4 {
let T4:! type;
let T5:! type;
let T6:! type;
}
// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+8]]:27: error: name `BAD1` not found [NameNotFound]
// CHECK:STDERR: impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+4]]:61: error: name `BAD2` not found [NameNotFound]
// CHECK:STDERR: impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+8]]:46: error: name `BAD3` not found [NameNotFound]
// CHECK:STDERR: impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+4]]:61: error: name `BAD4` not found [NameNotFound]
// CHECK:STDERR: impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
// --- fail_missing_on_definition.carbon
library "[[@TEST_NAME]]";
interface K { let V:! type; }
impl () as K where .V = {};
// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE+11]]:1: error: associated constant V not given a value in impl of interface K [ImplAssociatedConstantNeedsValue]
// CHECK:STDERR: impl () as K {}
// CHECK:STDERR: ^~~~~~~~~~~~~~
// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE-6]]:19: note: associated constant declared here [AssociatedConstantHere]
// CHECK:STDERR: interface K { let V:! type; }
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE-8]]:1: error: impl declared but not defined [ImplMissingDefinition]
// CHECK:STDERR: impl () as K where .V = {};
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as K {}
// --- fail_two_different.carbon
library "[[@TEST_NAME]]";
interface L { let W:! type; }
// CHECK:STDERR: fail_two_different.carbon:[[@LINE+4]]:12: error: associated constant `.(L.W)` given two different values `{}` and `()` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as L where .W = {} and .W = () {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as L where .W = {} and .W = () {}
// --- fail_two_different_first_associated.carbon
library "[[@TEST_NAME]]";
interface L2 { let W2:! type; let X2:! type; }
// CHECK:STDERR: fail_two_different_first_associated.carbon:[[@LINE+4]]:12: error: associated constant `.(L2.W2)` given two different values `.(L2.X2)` and `()` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as L2 where .W2 = .X2 and .W2 = () {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as L2 where .W2 = .X2 and .W2 = () {}
// --- fail_two_different_second_associated.carbon
library "[[@TEST_NAME]]";
interface L2 { let W2:! type; let X2:! type; }
// CHECK:STDERR: fail_two_different_second_associated.carbon:[[@LINE+4]]:12: error: associated constant `.(L2.W2)` given two different values `()` and `.(L2.X2)` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as L2 where .W2 = () and .W2 = .X2 {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as L2 where .W2 = () and .W2 = .X2 {}
// --- fail_two_different_first_bad.carbon
library "[[@TEST_NAME]]";
interface L2 { let W2:! type; }
// CHECK:STDERR: fail_two_different_first_bad.carbon:[[@LINE+4]]:27: error: name `BAD5` not found [NameNotFound]
// CHECK:STDERR: impl () as L2 where .W2 = BAD5 and .W2 = () {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
impl () as L2 where .W2 = BAD5 and .W2 = () {}
// --- fail_two_different_second_bad.carbon
library "[[@TEST_NAME]]";
interface L3 { let W3:! type; }
// CHECK:STDERR: fail_two_different_second_bad.carbon:[[@LINE+4]]:40: error: name `BAD6` not found [NameNotFound]
// CHECK:STDERR: impl () as L3 where .W3 = {} and .W3 = BAD6 {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
impl () as L3 where .W3 = {} and .W3 = BAD6 {}
// --- fail_two_different_both_bad.carbon
library "[[@TEST_NAME]]";
interface L4 { let W4:! type; }
// CHECK:STDERR: fail_two_different_both_bad.carbon:[[@LINE+8]]:27: error: name `BAD7` not found [NameNotFound]
// CHECK:STDERR: impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_two_different_both_bad.carbon:[[@LINE+4]]:42: error: name `BAD8` not found [NameNotFound]
// CHECK:STDERR: impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
// --- fail_many_different.carbon
library "[[@TEST_NAME]]";
interface L { let W:! type; }
// The facet type should have a single rewrite with `<error>` in the RHS (they
// are all errors, and they get deduped).
//
//@dump-sem-ir-begin
// CHECK:STDERR: fail_many_different.carbon:[[@LINE+4]]:12: error: associated constant `.(L.W)` given two different values `((), (), ())` and `({}, (), ())` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as L where .W = ((), (), ()) and .W = ({}, (), ()) and .W = ({}, {}, ()) and .W = ({}, (), {}) {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as L where .W = ((), (), ()) and .W = ({}, (), ()) and .W = ({}, {}, ()) and .W = ({}, (), {}) {}
//@dump-sem-ir-end
// --- repeated.carbon
library "[[@TEST_NAME]]";
interface M { let X:! type; }
impl () as M where .X = {} and .X = {} {}
// --- repeated_associated.carbon
library "[[@TEST_NAME]]";
interface M { let X:! type; let Y:! type; }
impl () as M where .X = .Y and .X = .Y and .Y = () {}
// --- fail_repeated_and_different.carbon
library "[[@TEST_NAME]]";
interface M { let X:! type; }
// CHECK:STDERR: fail_repeated_and_different.carbon:[[@LINE+4]]:12: error: associated constant `.(M.X)` given two different values `{}` and `()` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as M where .X = {} and .X = () and .X = {} {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as M where .X = {} and .X = () and .X = {} {}
// --- fail_cycle_single.carbon
library "[[@TEST_NAME]]";
interface M { let X:! type; }
// This fails because it resolves to `.X = .X` which is cyclical.
//
// CHECK:STDERR: fail_cycle_single.carbon:[[@LINE+4]]:12: error: found cycle in facet type constraint for `.(M.X)` [FacetTypeConstraintCycle]
// CHECK:STDERR: impl () as M where .X = .X {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as M where .X = .X {}
// --- fail_cycle.carbon
library "[[@TEST_NAME]]";
interface M { let X:! type; let Y:! type; let Z:! type; }
// This fails because it resolves to `.X = .X` which is cyclical.
// The value of .X and .Y becomes <error> but .Z is still valid.
//
//@dump-sem-ir-begin
// CHECK:STDERR: fail_cycle.carbon:[[@LINE+4]]:12: error: found cycle in facet type constraint for `.(M.X)` [FacetTypeConstraintCycle]
// CHECK:STDERR: impl () as M where .X = .Y and .Y = .X and .Z = () {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as M where .X = .Y and .Y = .X and .Z = () {}
//@dump-sem-ir-end
// --- fail_todo_cycle_between_interfaces.carbon
library "[[@TEST_NAME]]";
interface I {
let X1:! type;
let X2:! type;
}
interface J {
let X3:! type;
}
// TODO: This should fail due to a cyclic definition of each value. But right
// now it's failing due to compound member access in a rewrite constraint not
// working.
//
// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+12]]:45: error: expected identifier or `Self` after `.` [ExpectedIdentifierOrSelfAfterPeriod]
// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+8]]:45: error: semantics TODO: `handle invalid parse trees in `check`` [SemanticsTodo]
// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+4]]:71: error: expected identifier or `Self` after `.` [ExpectedIdentifierOrSelfAfterPeriod]
// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
// CHECK:STDERR: ^
// CHECK:STDERR:
impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
// --- non-type.carbon
library "[[@TEST_NAME]]";
interface N {
let Y:! {.a: {}};
}
impl () as N where .Y = {.a = {}} { }
// --- non-type_repeated.carbon
library "[[@TEST_NAME]]";
interface N {
let Y:! {.a: {}};
}
impl () as N where .Y = {.a = {}} and .Y = {.a = {}} { }
// --- fail_non-type_different.carbon
library "[[@TEST_NAME]]";
interface N {
let Y:! {.a: type};
}
// CHECK:STDERR: fail_non-type_different.carbon:[[@LINE+4]]:12: error: associated constant `.(N.Y)` given two different values `{.a = {}}` and `{.a = ()}` [AssociatedConstantWithDifferentValues]
// CHECK:STDERR: impl () as N where .Y = {.a = {}} and .Y = {.a = ()} {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl () as N where .Y = {.a = {}} and .Y = {.a = ()} {}
// --- fail_where_rewrite_function.carbon
library "[[@TEST_NAME]]";
interface IF { fn F(); }
class CD { }
// CHECK:STDERR: fail_where_rewrite_function.carbon:[[@LINE+4]]:12: error: rewrite specified for associated function F [RewriteForAssociatedFunction]
// CHECK:STDERR: impl CD as IF where .F = 0 {
// CHECK:STDERR: ^~~~~~~~~~~~~~~
// CHECK:STDERR:
impl CD as IF where .F = 0 {
fn F() {}
}
// CHECK:STDOUT: --- fail_many_different.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %L.type: type = facet_type <@L> [concrete]
// CHECK:STDOUT: %L.assoc_type: type = assoc_entity_type @L [concrete]
// CHECK:STDOUT: %assoc0: %L.assoc_type = assoc_entity element0, @L.%W [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %.Self: %L.type = bind_symbolic_name .Self [symbolic_self]
// CHECK:STDOUT: %.Self.as_type: type = facet_access_type %.Self [symbolic_self]
// CHECK:STDOUT: %L.lookup_impl_witness: <witness> = lookup_impl_witness %.Self, @L [symbolic_self]
// CHECK:STDOUT: %impl.elem0: type = impl_witness_access %L.lookup_impl_witness, element0 [symbolic_self]
// CHECK:STDOUT: %tuple.type.2d5: type = tuple_type (%empty_tuple.type, %empty_tuple.type, %empty_tuple.type) [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %tuple.type.e5a: type = tuple_type (%empty_struct_type, %empty_tuple.type, %empty_tuple.type) [concrete]
// CHECK:STDOUT: %tuple.type.d7e: type = tuple_type (%empty_struct_type, %empty_struct_type, %empty_tuple.type) [concrete]
// CHECK:STDOUT: %tuple.type.bd8: type = tuple_type (%empty_struct_type, %empty_tuple.type, %empty_struct_type) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: impl_decl @empty_tuple.type.as.<error>.impl [concrete] {} {
// CHECK:STDOUT: %.loc13_7.1: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_7.2: type = converted %.loc13_7.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %L.ref: type = name_ref L, file.%L.decl [concrete = constants.%L.type]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %.Self.ref.loc13_20: %L.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %W.ref.loc13_20: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_20: type = facet_access_type %.Self.ref.loc13_20 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_20: type = converted %.Self.ref.loc13_20, %.Self.as_type.loc13_20 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_20: type = impl_witness_access constants.%L.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.loc13_27: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_31: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_35: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_36.1: %tuple.type.2d5 = tuple_literal (%.loc13_27, %.loc13_31, %.loc13_35)
// CHECK:STDOUT: %.loc13_36.2: type = converted %.loc13_27, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_36.3: type = converted %.loc13_31, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_36.4: type = converted %.loc13_35, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_36.5: type = converted %.loc13_36.1, constants.%tuple.type.2d5 [concrete = constants.%tuple.type.2d5]
// CHECK:STDOUT: %.Self.ref.loc13_42: %L.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %W.ref.loc13_42: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_42: type = facet_access_type %.Self.ref.loc13_42 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_42: type = converted %.Self.ref.loc13_42, %.Self.as_type.loc13_42 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_42: type = impl_witness_access constants.%L.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.loc13_49: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc13_53: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_57: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_58.1: %tuple.type.e5a = tuple_literal (%.loc13_49, %.loc13_53, %.loc13_57)
// CHECK:STDOUT: %.loc13_58.2: type = converted %.loc13_49, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %.loc13_58.3: type = converted %.loc13_53, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_58.4: type = converted %.loc13_57, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_58.5: type = converted %.loc13_58.1, constants.%tuple.type.e5a [concrete = constants.%tuple.type.e5a]
// CHECK:STDOUT: %.Self.ref.loc13_64: %L.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %W.ref.loc13_64: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_64: type = facet_access_type %.Self.ref.loc13_64 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_64: type = converted %.Self.ref.loc13_64, %.Self.as_type.loc13_64 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_64: type = impl_witness_access constants.%L.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.loc13_71: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc13_75: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc13_79: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_80.1: %tuple.type.d7e = tuple_literal (%.loc13_71, %.loc13_75, %.loc13_79)
// CHECK:STDOUT: %.loc13_80.2: type = converted %.loc13_71, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %.loc13_80.3: type = converted %.loc13_75, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %.loc13_80.4: type = converted %.loc13_79, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_80.5: type = converted %.loc13_80.1, constants.%tuple.type.d7e [concrete = constants.%tuple.type.d7e]
// CHECK:STDOUT: %.Self.ref.loc13_86: %L.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %W.ref.loc13_86: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_86: type = facet_access_type %.Self.ref.loc13_86 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_86: type = converted %.Self.ref.loc13_86, %.Self.as_type.loc13_86 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_86: type = impl_witness_access constants.%L.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.loc13_93: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc13_97: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_101: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc13_102.1: %tuple.type.bd8 = tuple_literal (%.loc13_93, %.loc13_97, %.loc13_101)
// CHECK:STDOUT: %.loc13_102.2: type = converted %.loc13_93, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %.loc13_102.3: type = converted %.loc13_97, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_102.4: type = converted %.loc13_101, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
// CHECK:STDOUT: %.loc13_102.5: type = converted %.loc13_102.1, constants.%tuple.type.bd8 [concrete = constants.%tuple.type.bd8]
// CHECK:STDOUT: %.loc13_14: type = where_expr %.Self [concrete = <error>] {
// CHECK:STDOUT: requirement_rewrite %impl.elem0.loc13_20, %.loc13_36.5
// CHECK:STDOUT: requirement_rewrite %impl.elem0.loc13_42, %.loc13_58.5
// CHECK:STDOUT: requirement_rewrite %impl.elem0.loc13_64, %.loc13_80.5
// CHECK:STDOUT: requirement_rewrite %impl.elem0.loc13_86, %.loc13_102.5
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @empty_tuple.type.as.<error>.impl: %.loc13_7.2 as %.loc13_14 {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: witness = <error>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_cycle.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %M.type: type = facet_type <@M> [concrete]
// CHECK:STDOUT: %M.assoc_type: type = assoc_entity_type @M [concrete]
// CHECK:STDOUT: %assoc0: %M.assoc_type = assoc_entity element0, @M.%X [concrete]
// CHECK:STDOUT: %assoc1: %M.assoc_type = assoc_entity element1, @M.%Y [concrete]
// CHECK:STDOUT: %assoc2: %M.assoc_type = assoc_entity element2, @M.%Z [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %.Self: %M.type = bind_symbolic_name .Self [symbolic_self]
// CHECK:STDOUT: %.Self.as_type: type = facet_access_type %.Self [symbolic_self]
// CHECK:STDOUT: %M.lookup_impl_witness: <witness> = lookup_impl_witness %.Self, @M [symbolic_self]
// CHECK:STDOUT: %impl.elem0: type = impl_witness_access %M.lookup_impl_witness, element0 [symbolic_self]
// CHECK:STDOUT: %impl.elem1: type = impl_witness_access %M.lookup_impl_witness, element1 [symbolic_self]
// CHECK:STDOUT: %impl.elem2: type = impl_witness_access %M.lookup_impl_witness, element2 [symbolic_self]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: impl_decl @empty_tuple.type.as.<error>.impl [concrete] {} {
// CHECK:STDOUT: %.loc13_7.1: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_7.2: type = converted %.loc13_7.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %M.ref: type = name_ref M, file.%M.decl [concrete = constants.%M.type]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %.Self.ref.loc13_20: %M.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %X.ref.loc13_20: %M.assoc_type = name_ref X, @X.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_20: type = facet_access_type %.Self.ref.loc13_20 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_20: type = converted %.Self.ref.loc13_20, %.Self.as_type.loc13_20 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_20: type = impl_witness_access constants.%M.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.Self.ref.loc13_25: %M.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Y.ref.loc13_25: %M.assoc_type = name_ref Y, @Y.%assoc1 [concrete = constants.%assoc1]
// CHECK:STDOUT: %.Self.as_type.loc13_25: type = facet_access_type %.Self.ref.loc13_25 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_25: type = converted %.Self.ref.loc13_25, %.Self.as_type.loc13_25 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem1.loc13_25: type = impl_witness_access constants.%M.lookup_impl_witness, element1 [symbolic_self = constants.%impl.elem1]
// CHECK:STDOUT: %.Self.ref.loc13_32: %M.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Y.ref.loc13_32: %M.assoc_type = name_ref Y, @Y.%assoc1 [concrete = constants.%assoc1]
// CHECK:STDOUT: %.Self.as_type.loc13_32: type = facet_access_type %.Self.ref.loc13_32 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_32: type = converted %.Self.ref.loc13_32, %.Self.as_type.loc13_32 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem1.loc13_32: type = impl_witness_access constants.%M.lookup_impl_witness, element1 [symbolic_self = constants.%impl.elem1]
// CHECK:STDOUT: %.Self.ref.loc13_37: %M.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %X.ref.loc13_37: %M.assoc_type = name_ref X, @X.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %.Self.as_type.loc13_37: type = facet_access_type %.Self.ref.loc13_37 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_37: type = converted %.Self.ref.loc13_37, %.Self.as_type.loc13_37 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem0.loc13_37: type = impl_witness_access constants.%M.lookup_impl_witness, element0 [symbolic_self = constants.%impl.elem0]
// CHECK:STDOUT: %.Self.ref.loc13_44: %M.type = name_ref .Self, %.Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %Z.ref: %M.assoc_type = name_ref Z, @Z.%assoc2 [concrete = constants.%assoc2]
// CHECK:STDOUT: %.Self.as_type.loc13_44: type = facet_access_type %.Self.ref.loc13_44 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %.loc13_44: type = converted %.Self.ref.loc13_44, %.Self.as_type.loc13_44 [symbolic_self = constants.%.Self.as_type]
// CHECK:STDOUT: %impl.elem2: type = impl_witness_access constants.%M.lookup_impl_witness, element2 [symbolic_self = constants.%impl.elem2]
// CHECK:STDOUT: %.loc13_50.1: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc13_50.2: type = converted %.loc13_50.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: %.loc13_14: type = where_expr %.Self [concrete = <error>] {
// CHECK:STDOUT: requirement_rewrite %impl.elem0.loc13_20, %impl.elem1.loc13_25
// CHECK:STDOUT: requirement_rewrite %impl.elem1.loc13_32, %impl.elem0.loc13_37
// CHECK:STDOUT: requirement_rewrite %impl.elem2, %.loc13_50.2
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @empty_tuple.type.as.<error>.impl: %.loc13_7.2 as %.loc13_14 {
// CHECK:STDOUT: !members:
// CHECK:STDOUT: witness = <error>
// CHECK:STDOUT: }
// CHECK:STDOUT: