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

interface I {
  fn F() -> i32;
}

class A {
  extend impl as I {
    fn F() -> i32 {
      return 0;
    }
  }
}

fn TypeAccess() -> i32 {
  return A.F();
}

fn InstanceAccess(a: A) -> i32 {
  return a.F();
}

// CHECK:STDOUT: ; ModuleID = 'extend_impl.carbon'
// CHECK:STDOUT: source_filename = "extend_impl.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @"_CF.A.Main:I.Main"() !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret i32 0, !dbg !7
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CTypeAccess.Main() !dbg !8 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   %F.call = call i32 @"_CF.A.Main:I.Main"(), !dbg !9
// CHECK:STDOUT:   ret i32 %F.call, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define i32 @_CInstanceAccess.Main(ptr %a) !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   %F.call = call i32 @"_CF.A.Main:I.Main"(), !dbg !12
// CHECK:STDOUT:   ret i32 %F.call, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "extend_impl.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.A.Main:I.Main", scope: null, file: !3, line: 17, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{}
// CHECK:STDOUT: !7 = !DILocation(line: 18, column: 7, scope: !4)
// CHECK:STDOUT: !8 = distinct !DISubprogram(name: "TypeAccess", linkageName: "_CTypeAccess.Main", scope: null, file: !3, line: 23, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !9 = !DILocation(line: 24, column: 10, scope: !8)
// CHECK:STDOUT: !10 = !DILocation(line: 24, column: 3, scope: !8)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "InstanceAccess", linkageName: "_CInstanceAccess.Main", scope: null, file: !3, line: 27, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !12 = !DILocation(line: 28, column: 10, scope: !11)
// CHECK:STDOUT: !13 = !DILocation(line: 28, column: 3, scope: !11)