carbon-lang/toolchain/check/testdata/impl/generic_redeclaration.carbon

// 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/destroy.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/generic_redeclaration.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/generic_redeclaration.carbon

// --- fail_todo_same_self_and_interface.carbon

library "[[@TEST_NAME]]";

interface Interface {}

interface I {}
interface J {}
interface K {}
interface L {}

// TODO: Put these in a match_first so the test will pass again.
impl forall [T:! I] T as Interface;
impl forall [T:! J] T as Interface;
impl forall [T:! K] T as Interface;
impl forall [T:! L] T as Interface;

// These are different impls, so they are not redefinitions, even though the
// self type and constraint type are the same.
impl forall [T:! I] T as Interface {}
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE+7]]:1: error: found non-final `impl` with the same type structure as another non-final `impl` [ImplNonFinalSameTypeStructure]
// CHECK:STDERR: impl forall [T:! J] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE-4]]:1: note: other `impl` here [ImplNonFinalSameTypeStructureNote]
// CHECK:STDERR: impl forall [T:! I] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl forall [T:! J] T as Interface {}
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE+7]]:1: error: found non-final `impl` with the same type structure as another non-final `impl` [ImplNonFinalSameTypeStructure]
// CHECK:STDERR: impl forall [T:! K] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE-12]]:1: note: other `impl` here [ImplNonFinalSameTypeStructureNote]
// CHECK:STDERR: impl forall [T:! I] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl forall [T:! K] T as Interface {}
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE+7]]:1: error: found non-final `impl` with the same type structure as another non-final `impl` [ImplNonFinalSameTypeStructure]
// CHECK:STDERR: impl forall [T:! L] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_todo_same_self_and_interface.carbon:[[@LINE-20]]:1: note: other `impl` here [ImplNonFinalSameTypeStructureNote]
// CHECK:STDERR: impl forall [T:! I] T as Interface {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl forall [T:! L] T as Interface {}

// --- fail_same_self_and_interface_redefined.carbon

library "[[@TEST_NAME]]";

interface I {}
interface J {}

impl forall [T:! I] T as J {}
// CHECK:STDERR: fail_same_self_and_interface_redefined.carbon:[[@LINE+7]]:1: error: redefinition of `impl T as J` [ImplRedefinition]
// CHECK:STDERR: impl forall [T:! I] T as J {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_same_self_and_interface_redefined.carbon:[[@LINE-4]]:1: note: previous definition was here [ImplPreviousDefinition]
// CHECK:STDERR: impl forall [T:! I] T as J {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl forall [T:! I] T as J {}

// --- fail_same_type_different_spelling.carbon

library "[[@TEST_NAME]]";

class C;
interface I {}

// Since the spelling is different, it's not caught as a redefinition, but it
// is diagnosed as an overlapping impl without using a `match_first` block.
impl C as I {}
// CHECK:STDERR: fail_same_type_different_spelling.carbon:[[@LINE+7]]:1: error: found non-final `impl` with the same type structure as another non-final `impl` [ImplNonFinalSameTypeStructure]
// CHECK:STDERR: impl (C, C).0 as I {}
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_same_type_different_spelling.carbon:[[@LINE-4]]:1: note: other `impl` here [ImplNonFinalSameTypeStructureNote]
// CHECK:STDERR: impl C as I {}
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
impl (C, C).0 as I {}

// --- fail_redefinition_generic_regions.carbon

interface I {}

impl forall [T:! type] T as I {
  fn A() {}
}

// CHECK:STDERR: fail_redefinition_generic_regions.carbon:[[@LINE+7]]:1: error: redefinition of `impl T as I` [ImplRedefinition]
// CHECK:STDERR: impl forall [T:! type] T as I {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_redefinition_generic_regions.carbon:[[@LINE-7]]:1: note: previous definition was here [ImplPreviousDefinition]
// CHECK:STDERR: impl forall [T:! type] T as I {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
impl forall [T:! type] T as I {
  // Although not referenced, B has the same generic region index of A, and
  // makes C a different index. We used to merge, and this was a crash.
  fn B() {}
  fn C() -> () { return (); }
  fn D() -> () {
    return C();
  }
}

// CHECK:STDOUT: --- fail_todo_same_self_and_interface.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %Interface.type: type = facet_type <@Interface> [concrete]
// CHECK:STDOUT:   %Self.7fe: %Interface.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT:   %Self.9f2: %I.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %J.type: type = facet_type <@J> [concrete]
// CHECK:STDOUT:   %Self.dc6: %J.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %K.type: type = facet_type <@K> [concrete]
// CHECK:STDOUT:   %Self.999: %K.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %L.type: type = facet_type <@L> [concrete]
// CHECK:STDOUT:   %Self.b43: %L.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %type: type = facet_type <type> [concrete]
// CHECK:STDOUT:   %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT:   %T.9f2: %I.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type.09a: type = pattern_type %I.type [concrete]
// CHECK:STDOUT:   %T.binding.as_type.bcb: type = symbolic_binding_type T, 0, %T.9f2 [symbolic]
// CHECK:STDOUT:   %Interface.impl_witness.71f: <witness> = impl_witness file.%Interface.impl_witness_table.loc12, @T.binding.as_type.as.Interface.impl.de7(%T.9f2) [symbolic]
// CHECK:STDOUT:   %T.dc6: %J.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type.84b: type = pattern_type %J.type [concrete]
// CHECK:STDOUT:   %T.binding.as_type.1fa: type = symbolic_binding_type T, 0, %T.dc6 [symbolic]
// CHECK:STDOUT:   %Interface.impl_witness.fb4: <witness> = impl_witness file.%Interface.impl_witness_table.loc13, @T.binding.as_type.as.Interface.impl.af4(%T.dc6) [symbolic]
// CHECK:STDOUT:   %T.999: %K.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type.0fc: type = pattern_type %K.type [concrete]
// CHECK:STDOUT:   %T.binding.as_type.1c0: type = symbolic_binding_type T, 0, %T.999 [symbolic]
// CHECK:STDOUT:   %Interface.impl_witness.1fb: <witness> = impl_witness file.%Interface.impl_witness_table.loc14, @T.binding.as_type.as.Interface.impl.f9f(%T.999) [symbolic]
// CHECK:STDOUT:   %T.b43: %L.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type.ebc: type = pattern_type %L.type [concrete]
// CHECK:STDOUT:   %T.binding.as_type.66e: type = symbolic_binding_type T, 0, %T.b43 [symbolic]
// CHECK:STDOUT:   %Interface.impl_witness.b8c: <witness> = impl_witness file.%Interface.impl_witness_table.loc15, @T.binding.as_type.as.Interface.impl.f56(%T.b43) [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .Interface = %Interface.decl
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:     .J = %J.decl
// CHECK:STDOUT:     .K = %K.decl
// CHECK:STDOUT:     .L = %L.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %Interface.decl: type = interface_decl @Interface [concrete = constants.%Interface.type] {} {}
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT:   %J.decl: type = interface_decl @J [concrete = constants.%J.type] {} {}
// CHECK:STDOUT:   %K.decl: type = interface_decl @K [concrete = constants.%K.type] {} {}
// CHECK:STDOUT:   %L.decl: type = interface_decl @L [concrete = constants.%L.type] {} {}
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.de7 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.09a = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc12: %I.type = name_ref T, %T.loc12_14.1 [symbolic = %T.loc12_14.2 (constants.%T.9f2)]
// CHECK:STDOUT:     %T.as_type.loc12: type = facet_access_type %T.ref.loc12 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.bcb)]
// CHECK:STDOUT:     %.loc12_21: type = converted %T.ref.loc12, %T.as_type.loc12 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.bcb)]
// CHECK:STDOUT:     %Interface.ref.loc12: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc12_18: type = splice_block %I.ref.loc12 [concrete = constants.%I.type] {
// CHECK:STDOUT:       %.Self.2: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %I.ref.loc12: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc12_14.1: %I.type = symbolic_binding T, 0 [symbolic = %T.loc12_14.2 (constants.%T.9f2)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Interface.impl_witness_table.loc12 = impl_witness_table (), @T.binding.as_type.as.Interface.impl.de7 [concrete]
// CHECK:STDOUT:   %Interface.impl_witness.loc12: <witness> = impl_witness %Interface.impl_witness_table.loc12, @T.binding.as_type.as.Interface.impl.de7(constants.%T.9f2) [symbolic = @T.binding.as_type.as.Interface.impl.de7.%Interface.impl_witness (constants.%Interface.impl_witness.71f)]
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.af4 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.84b = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc13: %J.type = name_ref T, %T.loc13_14.1 [symbolic = %T.loc13_14.2 (constants.%T.dc6)]
// CHECK:STDOUT:     %T.as_type.loc13: type = facet_access_type %T.ref.loc13 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1fa)]
// CHECK:STDOUT:     %.loc13_21: type = converted %T.ref.loc13, %T.as_type.loc13 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1fa)]
// CHECK:STDOUT:     %Interface.ref.loc13: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc13_18: type = splice_block %J.ref.loc13 [concrete = constants.%J.type] {
// CHECK:STDOUT:       %.Self.2: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %J.ref.loc13: type = name_ref J, file.%J.decl [concrete = constants.%J.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc13_14.1: %J.type = symbolic_binding T, 0 [symbolic = %T.loc13_14.2 (constants.%T.dc6)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Interface.impl_witness_table.loc13 = impl_witness_table (), @T.binding.as_type.as.Interface.impl.af4 [concrete]
// CHECK:STDOUT:   %Interface.impl_witness.loc13: <witness> = impl_witness %Interface.impl_witness_table.loc13, @T.binding.as_type.as.Interface.impl.af4(constants.%T.dc6) [symbolic = @T.binding.as_type.as.Interface.impl.af4.%Interface.impl_witness (constants.%Interface.impl_witness.fb4)]
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.f9f [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.0fc = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc14: %K.type = name_ref T, %T.loc14_14.1 [symbolic = %T.loc14_14.2 (constants.%T.999)]
// CHECK:STDOUT:     %T.as_type.loc14: type = facet_access_type %T.ref.loc14 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1c0)]
// CHECK:STDOUT:     %.loc14_21: type = converted %T.ref.loc14, %T.as_type.loc14 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1c0)]
// CHECK:STDOUT:     %Interface.ref.loc14: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc14_18: type = splice_block %K.ref.loc14 [concrete = constants.%K.type] {
// CHECK:STDOUT:       %.Self.2: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %K.ref.loc14: type = name_ref K, file.%K.decl [concrete = constants.%K.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc14_14.1: %K.type = symbolic_binding T, 0 [symbolic = %T.loc14_14.2 (constants.%T.999)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Interface.impl_witness_table.loc14 = impl_witness_table (), @T.binding.as_type.as.Interface.impl.f9f [concrete]
// CHECK:STDOUT:   %Interface.impl_witness.loc14: <witness> = impl_witness %Interface.impl_witness_table.loc14, @T.binding.as_type.as.Interface.impl.f9f(constants.%T.999) [symbolic = @T.binding.as_type.as.Interface.impl.f9f.%Interface.impl_witness (constants.%Interface.impl_witness.1fb)]
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.f56 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.ebc = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc15: %L.type = name_ref T, %T.loc15_14.1 [symbolic = %T.loc15_14.2 (constants.%T.b43)]
// CHECK:STDOUT:     %T.as_type.loc15: type = facet_access_type %T.ref.loc15 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.66e)]
// CHECK:STDOUT:     %.loc15_21: type = converted %T.ref.loc15, %T.as_type.loc15 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.66e)]
// CHECK:STDOUT:     %Interface.ref.loc15: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc15_18: type = splice_block %L.ref.loc15 [concrete = constants.%L.type] {
// CHECK:STDOUT:       %.Self.2: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %L.ref.loc15: type = name_ref L, file.%L.decl [concrete = constants.%L.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc15_14.1: %L.type = symbolic_binding T, 0 [symbolic = %T.loc15_14.2 (constants.%T.b43)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Interface.impl_witness_table.loc15 = impl_witness_table (), @T.binding.as_type.as.Interface.impl.f56 [concrete]
// CHECK:STDOUT:   %Interface.impl_witness.loc15: <witness> = impl_witness %Interface.impl_witness_table.loc15, @T.binding.as_type.as.Interface.impl.f56(constants.%T.b43) [symbolic = @T.binding.as_type.as.Interface.impl.f56.%Interface.impl_witness (constants.%Interface.impl_witness.b8c)]
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.de7 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.09a = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc19: %I.type = name_ref T, %T.loc19 [symbolic = %T.loc12_14.2 (constants.%T.9f2)]
// CHECK:STDOUT:     %T.as_type.loc19: type = facet_access_type %T.ref.loc19 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.bcb)]
// CHECK:STDOUT:     %.loc19_21: type = converted %T.ref.loc19, %T.as_type.loc19 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.bcb)]
// CHECK:STDOUT:     %Interface.ref.loc19: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc19_18: type = splice_block %I.ref.loc19 [concrete = constants.%I.type] {
// CHECK:STDOUT:       %.Self.1: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %I.ref.loc19: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc19: %I.type = symbolic_binding T, 0 [symbolic = %T.loc12_14.2 (constants.%T.9f2)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.af4 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.84b = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc27: %J.type = name_ref T, %T.loc27 [symbolic = %T.loc13_14.2 (constants.%T.dc6)]
// CHECK:STDOUT:     %T.as_type.loc27: type = facet_access_type %T.ref.loc27 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1fa)]
// CHECK:STDOUT:     %.loc27_21: type = converted %T.ref.loc27, %T.as_type.loc27 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1fa)]
// CHECK:STDOUT:     %Interface.ref.loc27: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc27_18: type = splice_block %J.ref.loc27 [concrete = constants.%J.type] {
// CHECK:STDOUT:       %.Self.1: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %J.ref.loc27: type = name_ref J, file.%J.decl [concrete = constants.%J.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc27: %J.type = symbolic_binding T, 0 [symbolic = %T.loc13_14.2 (constants.%T.dc6)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.f9f [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.0fc = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc35: %K.type = name_ref T, %T.loc35 [symbolic = %T.loc14_14.2 (constants.%T.999)]
// CHECK:STDOUT:     %T.as_type.loc35: type = facet_access_type %T.ref.loc35 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1c0)]
// CHECK:STDOUT:     %.loc35_21: type = converted %T.ref.loc35, %T.as_type.loc35 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1c0)]
// CHECK:STDOUT:     %Interface.ref.loc35: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc35_18: type = splice_block %K.ref.loc35 [concrete = constants.%K.type] {
// CHECK:STDOUT:       %.Self.1: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %K.ref.loc35: type = name_ref K, file.%K.decl [concrete = constants.%K.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc35: %K.type = symbolic_binding T, 0 [symbolic = %T.loc14_14.2 (constants.%T.999)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.Interface.impl.f56 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.ebc = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref.loc43: %L.type = name_ref T, %T.loc43 [symbolic = %T.loc15_14.2 (constants.%T.b43)]
// CHECK:STDOUT:     %T.as_type.loc43: type = facet_access_type %T.ref.loc43 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.66e)]
// CHECK:STDOUT:     %.loc43_21: type = converted %T.ref.loc43, %T.as_type.loc43 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.66e)]
// CHECK:STDOUT:     %Interface.ref.loc43: type = name_ref Interface, file.%Interface.decl [concrete = constants.%Interface.type]
// CHECK:STDOUT:     %.loc43_18: type = splice_block %L.ref.loc43 [concrete = constants.%L.type] {
// CHECK:STDOUT:       %.Self.1: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %L.ref.loc43: type = name_ref L, file.%L.decl [concrete = constants.%L.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc43: %L.type = symbolic_binding T, 0 [symbolic = %T.loc15_14.2 (constants.%T.b43)]
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Interface {
// CHECK:STDOUT:   %Self: %Interface.type = symbolic_binding Self, 0 [symbolic = constants.%Self.7fe]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self.9f2]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @J {
// CHECK:STDOUT:   %Self: %J.type = symbolic_binding Self, 0 [symbolic = constants.%Self.dc6]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @K {
// CHECK:STDOUT:   %Self: %K.type = symbolic_binding Self, 0 [symbolic = constants.%Self.999]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @L {
// CHECK:STDOUT:   %Self: %L.type = symbolic_binding Self, 0 [symbolic = constants.%Self.b43]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.Interface.impl.de7(%T.loc12_14.1: %I.type) {
// CHECK:STDOUT:   %T.loc12_14.2: %I.type = symbolic_binding T, 0 [symbolic = %T.loc12_14.2 (constants.%T.9f2)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc12_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.bcb)]
// CHECK:STDOUT:   %Interface.impl_witness: <witness> = impl_witness file.%Interface.impl_witness_table.loc12, @T.binding.as_type.as.Interface.impl.de7(%T.loc12_14.2) [symbolic = %Interface.impl_witness (constants.%Interface.impl_witness.71f)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc12_21 as %Interface.ref.loc12 {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = file.%Interface.impl_witness.loc12
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.Interface.impl.af4(%T.loc13_14.1: %J.type) {
// CHECK:STDOUT:   %T.loc13_14.2: %J.type = symbolic_binding T, 0 [symbolic = %T.loc13_14.2 (constants.%T.dc6)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc13_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1fa)]
// CHECK:STDOUT:   %Interface.impl_witness: <witness> = impl_witness file.%Interface.impl_witness_table.loc13, @T.binding.as_type.as.Interface.impl.af4(%T.loc13_14.2) [symbolic = %Interface.impl_witness (constants.%Interface.impl_witness.fb4)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc13_21 as %Interface.ref.loc13 {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = file.%Interface.impl_witness.loc13
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.Interface.impl.f9f(%T.loc14_14.1: %K.type) {
// CHECK:STDOUT:   %T.loc14_14.2: %K.type = symbolic_binding T, 0 [symbolic = %T.loc14_14.2 (constants.%T.999)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc14_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.1c0)]
// CHECK:STDOUT:   %Interface.impl_witness: <witness> = impl_witness file.%Interface.impl_witness_table.loc14, @T.binding.as_type.as.Interface.impl.f9f(%T.loc14_14.2) [symbolic = %Interface.impl_witness (constants.%Interface.impl_witness.1fb)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc14_21 as %Interface.ref.loc14 {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = file.%Interface.impl_witness.loc14
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.Interface.impl.f56(%T.loc15_14.1: %L.type) {
// CHECK:STDOUT:   %T.loc15_14.2: %L.type = symbolic_binding T, 0 [symbolic = %T.loc15_14.2 (constants.%T.b43)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc15_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type.66e)]
// CHECK:STDOUT:   %Interface.impl_witness: <witness> = impl_witness file.%Interface.impl_witness_table.loc15, @T.binding.as_type.as.Interface.impl.f56(%T.loc15_14.2) [symbolic = %Interface.impl_witness (constants.%Interface.impl_witness.b8c)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc15_21 as %Interface.ref.loc15 {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = file.%Interface.impl_witness.loc15
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.Interface.impl.de7(constants.%T.9f2) {
// CHECK:STDOUT:   %T.loc12_14.2 => constants.%T.9f2
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type.bcb
// CHECK:STDOUT:   %Interface.impl_witness => constants.%Interface.impl_witness.71f
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.Interface.impl.af4(constants.%T.dc6) {
// CHECK:STDOUT:   %T.loc13_14.2 => constants.%T.dc6
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type.1fa
// CHECK:STDOUT:   %Interface.impl_witness => constants.%Interface.impl_witness.fb4
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.Interface.impl.f9f(constants.%T.999) {
// CHECK:STDOUT:   %T.loc14_14.2 => constants.%T.999
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type.1c0
// CHECK:STDOUT:   %Interface.impl_witness => constants.%Interface.impl_witness.1fb
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.Interface.impl.f56(constants.%T.b43) {
// CHECK:STDOUT:   %T.loc15_14.2 => constants.%T.b43
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type.66e
// CHECK:STDOUT:   %Interface.impl_witness => constants.%Interface.impl_witness.b8c
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_same_self_and_interface_redefined.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT:   %Self.9f2: %I.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %J.type: type = facet_type <@J> [concrete]
// CHECK:STDOUT:   %Self.dc6: %J.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %type: type = facet_type <type> [concrete]
// CHECK:STDOUT:   %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT:   %T: %I.type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %I.type [concrete]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T [symbolic]
// CHECK:STDOUT:   %J.impl_witness: <witness> = impl_witness file.%J.impl_witness_table, @T.binding.as_type.as.J.impl.8399b6.1(%T) [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:     .J = %J.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT:   %J.decl: type = interface_decl @J [concrete = constants.%J.type] {} {}
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.J.impl.8399b6.1 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref: %I.type = name_ref T, %T.loc7_14.1 [symbolic = %T.loc7_14.2 (constants.%T)]
// CHECK:STDOUT:     %T.as_type: type = facet_access_type %T.ref [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:     %.loc7_21: type = converted %T.ref, %T.as_type [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:     %J.ref: type = name_ref J, file.%J.decl [concrete = constants.%J.type]
// CHECK:STDOUT:     %.loc7_18: type = splice_block %I.ref [concrete = constants.%I.type] {
// CHECK:STDOUT:       %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc7_14.1: %I.type = symbolic_binding T, 0 [symbolic = %T.loc7_14.2 (constants.%T)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %J.impl_witness_table = impl_witness_table (), @T.binding.as_type.as.J.impl.8399b6.1 [concrete]
// CHECK:STDOUT:   %J.impl_witness: <witness> = impl_witness %J.impl_witness_table, @T.binding.as_type.as.J.impl.8399b6.1(constants.%T) [symbolic = @T.binding.as_type.as.J.impl.8399b6.1.%J.impl_witness (constants.%J.impl_witness)]
// CHECK:STDOUT:   impl_decl @T.binding.as_type.as.J.impl.8399b6.2 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref: %I.type = name_ref T, %T.loc15_14.1 [symbolic = %T.loc15_14.2 (constants.%T)]
// CHECK:STDOUT:     %T.as_type: type = facet_access_type %T.ref [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:     %.loc15_21: type = converted %T.ref, %T.as_type [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:     %J.ref: type = name_ref J, file.%J.decl [concrete = constants.%J.type]
// CHECK:STDOUT:     %.loc15_18: type = splice_block %I.ref [concrete = constants.%I.type] {
// CHECK:STDOUT:       %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:       %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.loc15_14.1: %I.type = symbolic_binding T, 0 [symbolic = %T.loc15_14.2 (constants.%T)]
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self.9f2]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @J {
// CHECK:STDOUT:   %Self: %J.type = symbolic_binding Self, 0 [symbolic = constants.%Self.dc6]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.J.impl.8399b6.1(%T.loc7_14.1: %I.type) {
// CHECK:STDOUT:   %T.loc7_14.2: %I.type = symbolic_binding T, 0 [symbolic = %T.loc7_14.2 (constants.%T)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc7_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:   %J.impl_witness: <witness> = impl_witness file.%J.impl_witness_table, @T.binding.as_type.as.J.impl.8399b6.1(%T.loc7_14.2) [symbolic = %J.impl_witness (constants.%J.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc7_21 as %J.ref {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = file.%J.impl_witness
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.binding.as_type.as.J.impl.8399b6.2(%T.loc15_14.1: %I.type) {
// CHECK:STDOUT:   %T.loc15_14.2: %I.type = symbolic_binding T, 0 [symbolic = %T.loc15_14.2 (constants.%T)]
// CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.loc15_14.2 [symbolic = %T.binding.as_type (constants.%T.binding.as_type)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %.loc15_21 as %J.ref {
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     witness = <error>
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.J.impl.8399b6.1(constants.%T) {
// CHECK:STDOUT:   %T.loc7_14.2 => constants.%T
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type
// CHECK:STDOUT:   %J.impl_witness => constants.%J.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.binding.as_type.as.J.impl.8399b6.2(constants.%T) {
// CHECK:STDOUT:   %T.loc15_14.2 => constants.%T
// CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_same_type_different_spelling.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %I.impl_witness.f6038c.1: <witness> = impl_witness file.%I.impl_witness_table.loc9 [concrete]
// CHECK:STDOUT:   %tuple.type: type = tuple_type (type, type) [concrete]
// CHECK:STDOUT:   %tuple: %tuple.type = tuple_value (%C, %C) [concrete]
// CHECK:STDOUT:   %int_0: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT:   %I.impl_witness.f6038c.2: <witness> = impl_witness file.%I.impl_witness_table.loc17 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .C = %C.decl
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT:   impl_decl @C.as.I.impl.7de31e.1 [concrete] {} {
// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %I.impl_witness_table.loc9 = impl_witness_table (), @C.as.I.impl.7de31e.1 [concrete]
// CHECK:STDOUT:   %I.impl_witness.loc9: <witness> = impl_witness %I.impl_witness_table.loc9 [concrete = constants.%I.impl_witness.f6038c.1]
// CHECK:STDOUT:   impl_decl @C.as.I.impl.7de31e.2 [concrete] {} {
// CHECK:STDOUT:     %C.ref.loc17_7: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT:     %C.ref.loc17_10: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT:     %.loc17_11.1: %tuple.type = tuple_literal (%C.ref.loc17_7, %C.ref.loc17_10) [concrete = constants.%tuple]
// CHECK:STDOUT:     %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT:     %tuple: %tuple.type = tuple_value (%C.ref.loc17_7, %C.ref.loc17_10) [concrete = constants.%tuple]
// CHECK:STDOUT:     %.loc17_11.2: %tuple.type = converted %.loc17_11.1, %tuple [concrete = constants.%tuple]
// CHECK:STDOUT:     %tuple.elem0: type = tuple_access %.loc17_11.2, element0 [concrete = constants.%C]
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %I.impl_witness_table.loc17 = impl_witness_table (), @C.as.I.impl.7de31e.2 [concrete]
// CHECK:STDOUT:   %I.impl_witness.loc17: <witness> = impl_witness %I.impl_witness_table.loc17 [concrete = constants.%I.impl_witness.f6038c.2]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @C.as.I.impl.7de31e.1: %C.ref as %I.ref {
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   witness = file.%I.impl_witness.loc9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @C.as.I.impl.7de31e.2: %tuple.elem0 as %I.ref {
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   witness = file.%I.impl_witness.loc17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C;
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_redefinition_generic_regions.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT:   %type: type = facet_type <type> [concrete]
// CHECK:STDOUT:   %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT:   %pattern_type.98f: type = pattern_type type [concrete]
// CHECK:STDOUT:   %I.impl_witness: <witness> = impl_witness file.%I.impl_witness_table, @T.as.I.impl.381c92.1(%T) [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.A.type: type = fn_type @T.as.I.impl.A, @T.as.I.impl.381c92.1(%T) [symbolic]
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %T.as.I.impl.A: %T.as.I.impl.A.type = struct_value () [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.B.type: type = fn_type @T.as.I.impl.B, @T.as.I.impl.381c92.2(%T) [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.B: %T.as.I.impl.B.type = struct_value () [symbolic]
// CHECK:STDOUT:   %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
// CHECK:STDOUT:   %pattern_type.cb1: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT:   %T.as.I.impl.C.type: type = fn_type @T.as.I.impl.C, @T.as.I.impl.381c92.2(%T) [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.C: %T.as.I.impl.C.type = struct_value () [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.D.type: type = fn_type @T.as.I.impl.D, @T.as.I.impl.381c92.2(%T) [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.D: %T.as.I.impl.D.type = struct_value () [symbolic]
// CHECK:STDOUT:   %T.as.I.impl.C.specific_fn: <specific function> = specific_function %T.as.I.impl.C, @T.as.I.impl.C(%T) [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT:   impl_decl @T.as.I.impl.381c92.1 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref: type = name_ref T, %T.loc4_14.2 [symbolic = %T.loc4_14.1 (constants.%T)]
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:     %T.loc4_14.2: type = symbolic_binding T, 0 [symbolic = %T.loc4_14.1 (constants.%T)]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %I.impl_witness_table = impl_witness_table (), @T.as.I.impl.381c92.1 [concrete]
// CHECK:STDOUT:   %I.impl_witness: <witness> = impl_witness %I.impl_witness_table, @T.as.I.impl.381c92.1(constants.%T) [symbolic = @T.as.I.impl.381c92.1.%I.impl_witness (constants.%I.impl_witness)]
// CHECK:STDOUT:   impl_decl @T.as.I.impl.381c92.2 [concrete] {
// CHECK:STDOUT:     %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %T.ref: type = name_ref T, %T.loc15_14.2 [symbolic = %T.loc15_14.1 (constants.%T)]
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:     %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT:     %T.loc15_14.2: type = symbolic_binding T, 0 [symbolic = %T.loc15_14.1 (constants.%T)]
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   witness = ()
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.as.I.impl.381c92.1(%T.loc4_14.2: type) {
// CHECK:STDOUT:   %T.loc4_14.1: type = symbolic_binding T, 0 [symbolic = %T.loc4_14.1 (constants.%T)]
// CHECK:STDOUT:   %I.impl_witness: <witness> = impl_witness file.%I.impl_witness_table, @T.as.I.impl.381c92.1(%T.loc4_14.1) [symbolic = %I.impl_witness (constants.%I.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %T.as.I.impl.A.type: type = fn_type @T.as.I.impl.A, @T.as.I.impl.381c92.1(%T.loc4_14.1) [symbolic = %T.as.I.impl.A.type (constants.%T.as.I.impl.A.type)]
// CHECK:STDOUT:   %T.as.I.impl.A: @T.as.I.impl.381c92.1.%T.as.I.impl.A.type (%T.as.I.impl.A.type) = struct_value () [symbolic = %T.as.I.impl.A (constants.%T.as.I.impl.A)]
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %T.ref as %I.ref {
// CHECK:STDOUT:     %T.as.I.impl.A.decl: @T.as.I.impl.381c92.1.%T.as.I.impl.A.type (%T.as.I.impl.A.type) = fn_decl @T.as.I.impl.A [symbolic = @T.as.I.impl.381c92.1.%T.as.I.impl.A (constants.%T.as.I.impl.A)] {} {}
// CHECK:STDOUT:
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     .A = %T.as.I.impl.A.decl
// CHECK:STDOUT:     witness = file.%I.impl_witness
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.as.I.impl.381c92.2(%T.loc15_14.2: type) {
// CHECK:STDOUT:   %T.loc15_14.1: type = symbolic_binding T, 0 [symbolic = %T.loc15_14.1 (constants.%T)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %T.as.I.impl.B.type: type = fn_type @T.as.I.impl.B, @T.as.I.impl.381c92.2(%T.loc15_14.1) [symbolic = %T.as.I.impl.B.type (constants.%T.as.I.impl.B.type)]
// CHECK:STDOUT:   %T.as.I.impl.B: @T.as.I.impl.381c92.2.%T.as.I.impl.B.type (%T.as.I.impl.B.type) = struct_value () [symbolic = %T.as.I.impl.B (constants.%T.as.I.impl.B)]
// CHECK:STDOUT:   %T.as.I.impl.C.type: type = fn_type @T.as.I.impl.C, @T.as.I.impl.381c92.2(%T.loc15_14.1) [symbolic = %T.as.I.impl.C.type (constants.%T.as.I.impl.C.type)]
// CHECK:STDOUT:   %T.as.I.impl.C: @T.as.I.impl.381c92.2.%T.as.I.impl.C.type (%T.as.I.impl.C.type) = struct_value () [symbolic = %T.as.I.impl.C (constants.%T.as.I.impl.C)]
// CHECK:STDOUT:   %T.as.I.impl.D.type: type = fn_type @T.as.I.impl.D, @T.as.I.impl.381c92.2(%T.loc15_14.1) [symbolic = %T.as.I.impl.D.type (constants.%T.as.I.impl.D.type)]
// CHECK:STDOUT:   %T.as.I.impl.D: @T.as.I.impl.381c92.2.%T.as.I.impl.D.type (%T.as.I.impl.D.type) = struct_value () [symbolic = %T.as.I.impl.D (constants.%T.as.I.impl.D)]
// CHECK:STDOUT:
// CHECK:STDOUT:   impl: %T.ref as %I.ref {
// CHECK:STDOUT:     %T.as.I.impl.B.decl: @T.as.I.impl.381c92.2.%T.as.I.impl.B.type (%T.as.I.impl.B.type) = fn_decl @T.as.I.impl.B [symbolic = @T.as.I.impl.381c92.2.%T.as.I.impl.B (constants.%T.as.I.impl.B)] {} {}
// CHECK:STDOUT:     %T.as.I.impl.C.decl: @T.as.I.impl.381c92.2.%T.as.I.impl.C.type (%T.as.I.impl.C.type) = fn_decl @T.as.I.impl.C [symbolic = @T.as.I.impl.381c92.2.%T.as.I.impl.C (constants.%T.as.I.impl.C)] {
// CHECK:STDOUT:       %return.patt: %pattern_type.cb1 = return_slot_pattern [concrete]
// CHECK:STDOUT:       %return.param_patt: %pattern_type.cb1 = out_param_pattern %return.patt, call_param0 [concrete]
// CHECK:STDOUT:     } {
// CHECK:STDOUT:       %.loc19_14.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT:       %.loc19_14.2: type = converted %.loc19_14.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:       %return.param: ref %empty_tuple.type = out_param call_param0
// CHECK:STDOUT:       %return: ref %empty_tuple.type = return_slot %return.param
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %T.as.I.impl.D.decl: @T.as.I.impl.381c92.2.%T.as.I.impl.D.type (%T.as.I.impl.D.type) = fn_decl @T.as.I.impl.D [symbolic = @T.as.I.impl.381c92.2.%T.as.I.impl.D (constants.%T.as.I.impl.D)] {
// CHECK:STDOUT:       %return.patt: %pattern_type.cb1 = return_slot_pattern [concrete]
// CHECK:STDOUT:       %return.param_patt: %pattern_type.cb1 = out_param_pattern %return.patt, call_param0 [concrete]
// CHECK:STDOUT:     } {
// CHECK:STDOUT:       %.loc20_14.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT:       %.loc20_14.2: type = converted %.loc20_14.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT:       %return.param: ref %empty_tuple.type = out_param call_param0
// CHECK:STDOUT:       %return: ref %empty_tuple.type = return_slot %return.param
// CHECK:STDOUT:     }
// CHECK:STDOUT:
// CHECK:STDOUT:   !members:
// CHECK:STDOUT:     .B = %T.as.I.impl.B.decl
// CHECK:STDOUT:     .C = %T.as.I.impl.C.decl
// CHECK:STDOUT:     .D = %T.as.I.impl.D.decl
// CHECK:STDOUT:     witness = <error>
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @T.as.I.impl.A(@T.as.I.impl.381c92.1.%T.loc4_14.2: type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   fn() {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @T.as.I.impl.B(@T.as.I.impl.381c92.2.%T.loc15_14.2: type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   fn() {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @T.as.I.impl.C(@T.as.I.impl.381c92.2.%T.loc15_14.2: type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   fn() -> %empty_tuple.type {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     %.loc19_26.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
// CHECK:STDOUT:     %.loc19_26.2: init %empty_tuple.type = tuple_init () to %return [concrete = constants.%empty_tuple]
// CHECK:STDOUT:     %.loc19_27: init %empty_tuple.type = converted %.loc19_26.1, %.loc19_26.2 [concrete = constants.%empty_tuple]
// CHECK:STDOUT:     return %.loc19_27 to %return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @T.as.I.impl.D(@T.as.I.impl.381c92.2.%T.loc15_14.2: type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T)]
// CHECK:STDOUT:   %T.as.I.impl.C.type: type = fn_type @T.as.I.impl.C, @T.as.I.impl.381c92.2(%T) [symbolic = %T.as.I.impl.C.type (constants.%T.as.I.impl.C.type)]
// CHECK:STDOUT:   %T.as.I.impl.C: @T.as.I.impl.D.%T.as.I.impl.C.type (%T.as.I.impl.C.type) = struct_value () [symbolic = %T.as.I.impl.C (constants.%T.as.I.impl.C)]
// CHECK:STDOUT:   %T.as.I.impl.C.specific_fn.loc21_12.2: <specific function> = specific_function %T.as.I.impl.C, @T.as.I.impl.C(%T) [symbolic = %T.as.I.impl.C.specific_fn.loc21_12.2 (constants.%T.as.I.impl.C.specific_fn)]
// CHECK:STDOUT:
// CHECK:STDOUT:   fn() -> %empty_tuple.type {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     %.loc21: @T.as.I.impl.D.%T.as.I.impl.C.type (%T.as.I.impl.C.type) = specific_constant @T.as.I.impl.381c92.2.%T.as.I.impl.C.decl, @T.as.I.impl.381c92.2(constants.%T) [symbolic = %T.as.I.impl.C (constants.%T.as.I.impl.C)]
// CHECK:STDOUT:     %C.ref: @T.as.I.impl.D.%T.as.I.impl.C.type (%T.as.I.impl.C.type) = name_ref C, %.loc21 [symbolic = %T.as.I.impl.C (constants.%T.as.I.impl.C)]
// CHECK:STDOUT:     %T.as.I.impl.C.specific_fn.loc21_12.1: <specific function> = specific_function %C.ref, @T.as.I.impl.C(constants.%T) [symbolic = %T.as.I.impl.C.specific_fn.loc21_12.2 (constants.%T.as.I.impl.C.specific_fn)]
// CHECK:STDOUT:     %T.as.I.impl.C.call: init %empty_tuple.type = call %T.as.I.impl.C.specific_fn.loc21_12.1()
// CHECK:STDOUT:     return %T.as.I.impl.C.call to %return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.381c92.1(constants.%T) {
// CHECK:STDOUT:   %T.loc4_14.1 => constants.%T
// CHECK:STDOUT:   %I.impl_witness => constants.%I.impl_witness
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %T.as.I.impl.A.type => constants.%T.as.I.impl.A.type
// CHECK:STDOUT:   %T.as.I.impl.A => constants.%T.as.I.impl.A
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.A(constants.%T) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.381c92.2(constants.%T) {
// CHECK:STDOUT:   %T.loc15_14.1 => constants.%T
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %T.as.I.impl.B.type => constants.%T.as.I.impl.B.type
// CHECK:STDOUT:   %T.as.I.impl.B => constants.%T.as.I.impl.B
// CHECK:STDOUT:   %T.as.I.impl.C.type => constants.%T.as.I.impl.C.type
// CHECK:STDOUT:   %T.as.I.impl.C => constants.%T.as.I.impl.C
// CHECK:STDOUT:   %T.as.I.impl.D.type => constants.%T.as.I.impl.D.type
// CHECK:STDOUT:   %T.as.I.impl.D => constants.%T.as.I.impl.D
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.B(constants.%T) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.C(constants.%T) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.I.impl.D(constants.%T) {}
// CHECK:STDOUT: