// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/lookup/instance_method.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/lookup/instance_method.carbon

class C;

interface I {
  fn F[self: Self]() -> i32;
}

class C {
  extend impl as I {
    fn F[self: Self]() -> i32;
  }
}

fn F(c: C) -> i32 {
  return c.F();
}

// CHECK:STDOUT: --- instance_method.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [template]
// CHECK:STDOUT:   %.1: type = interface_type @I [template]
// CHECK:STDOUT:   %Self: %.1 = bind_symbolic_name Self 0 [symbolic]
// CHECK:STDOUT:   %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT:   %.2: type = tuple_type () [template]
// CHECK:STDOUT:   %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT:   %F.type.1: type = fn_type @F.1 [template]
// CHECK:STDOUT:   %F.1: %F.type.1 = struct_value () [template]
// CHECK:STDOUT:   %.3: type = assoc_entity_type @I, %F.type.1 [template]
// CHECK:STDOUT:   %.4: %.3 = assoc_entity element0, @I.%F.decl [template]
// CHECK:STDOUT:   %F.type.2: type = fn_type @F.2 [template]
// CHECK:STDOUT:   %F.2: %F.type.2 = struct_value () [template]
// CHECK:STDOUT:   %.5: <witness> = interface_witness (%F.2) [template]
// CHECK:STDOUT:   %.6: type = struct_type {} [template]
// CHECK:STDOUT:   %F.type.3: type = fn_type @F.3 [template]
// CHECK:STDOUT:   %F.3: %F.type.3 = struct_value () [template]
// CHECK:STDOUT:   %.7: type = ptr_type %.6 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .Core = %Core
// CHECK:STDOUT:     .C = %C.decl.loc11
// CHECK:STDOUT:     .I = %I.decl
// CHECK:STDOUT:     .F = %F.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT:   %C.decl.loc11: type = class_decl @C [template = constants.%C] {}
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [template = constants.%.1] {}
// CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref ir3, inst+3, loaded [template = constants.%Int32]
// CHECK:STDOUT:   %C.decl.loc17: type = class_decl @C [template = constants.%C] {}
// CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref ir3, inst+3, loaded [template = constants.%Int32]
// CHECK:STDOUT:   %import_ref.3: %Int32.type = import_ref ir3, inst+3, loaded [template = constants.%Int32]
// CHECK:STDOUT:   %F.decl: %F.type.3 = fn_decl @F.3 [template = constants.%F.3] {
// CHECK:STDOUT:     %C.ref: type = name_ref C, %C.decl.loc11 [template = constants.%C]
// CHECK:STDOUT:     %c.loc23_6.1: %C = param c
// CHECK:STDOUT:     @F.3.%c: %C = bind_name c, %c.loc23_6.1
// CHECK:STDOUT:     %int.make_type_32: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT:     %.loc23_15.1: type = value_of_initializer %int.make_type_32 [template = i32]
// CHECK:STDOUT:     %.loc23_15.2: type = converted %int.make_type_32, %.loc23_15.1 [template = i32]
// CHECK:STDOUT:     @F.3.%return: ref i32 = var <return slot>
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %.1 = bind_symbolic_name Self 0 [symbolic = constants.%Self]
// CHECK:STDOUT:   %F.decl: %F.type.1 = fn_decl @F.1 [template = constants.%F.1] {
// CHECK:STDOUT:     %Self.ref: %.1 = name_ref Self, %Self [symbolic = constants.%Self]
// CHECK:STDOUT:     %.loc14_14.1: type = facet_type_access %Self.ref [symbolic = constants.%Self]
// CHECK:STDOUT:     %.loc14_14.2: type = converted %Self.ref, %.loc14_14.1 [symbolic = constants.%Self]
// CHECK:STDOUT:     %self.loc14_8.1: %Self = param self
// CHECK:STDOUT:     %self.loc14_8.2: %Self = bind_name self, %self.loc14_8.1
// CHECK:STDOUT:     %int.make_type_32: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT:     %.loc14_25.1: type = value_of_initializer %int.make_type_32 [template = i32]
// CHECK:STDOUT:     %.loc14_25.2: type = converted %int.make_type_32, %.loc14_25.1 [template = i32]
// CHECK:STDOUT:     %return.var: ref i32 = var <return slot>
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %.loc14_28: %.3 = assoc_entity element0, %F.decl [template = constants.%.4]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   .F = %.loc14_28
// CHECK:STDOUT:   witness = (%F.decl)
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @impl: %C as %.1 {
// CHECK:STDOUT:   %F.decl: %F.type.2 = fn_decl @F.2 [template = constants.%F.2] {
// CHECK:STDOUT:     %Self.ref: type = name_ref Self, constants.%C [template = constants.%C]
// CHECK:STDOUT:     %self.loc19_10.1: %C = param self
// CHECK:STDOUT:     %self.loc19_10.2: %C = bind_name self, %self.loc19_10.1
// CHECK:STDOUT:     %int.make_type_32: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT:     %.loc19_27.1: type = value_of_initializer %int.make_type_32 [template = i32]
// CHECK:STDOUT:     %.loc19_27.2: type = converted %int.make_type_32, %.loc19_27.1 [template = i32]
// CHECK:STDOUT:     %return.var: ref i32 = var <return slot>
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %.1: <witness> = interface_witness (%F.decl) [template = constants.%.5]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .F = %F.decl
// CHECK:STDOUT:   witness = %.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT:   impl_decl @impl {
// CHECK:STDOUT:     %I.ref: type = name_ref I, file.%I.decl [template = constants.%.1]
// CHECK:STDOUT:   }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = constants.%C
// CHECK:STDOUT:   extend name_scope2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.1[@I.%self.loc14_8.2: %Self]() -> i32
// CHECK:STDOUT:     generic [@I.%Self: %.1];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.2[@impl.%self.loc19_10.2: %C]() -> i32;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.3(%c: %C) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %c.ref: %C = name_ref c, %c
// CHECK:STDOUT:   %F.ref: %.3 = name_ref F, @I.%.loc14_28 [template = constants.%.4]
// CHECK:STDOUT:   %.1: %F.type.1 = interface_witness_access @impl.%.1, element0 [template = constants.%F.2]
// CHECK:STDOUT:   %.loc24_11: <bound method> = bound_method %c.ref, %.1
// CHECK:STDOUT:   %F.call: init i32 = call %.loc24_11(%c.ref)
// CHECK:STDOUT:   %.loc24_15.1: i32 = value_of_initializer %F.call
// CHECK:STDOUT:   %.loc24_15.2: i32 = converted %F.call, %.loc24_15.1
// CHECK:STDOUT:   return %.loc24_15.2
// CHECK:STDOUT: }
// CHECK:STDOUT: