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carbon-lang/toolchain/lower/testdata/class/adapt.carbon
T
Christopher Di BellaandRichard Smith b2d339b581 Enable SubobjectDestroy.Op to destroy fields defined in a ClassType (#7840) 
Base classes will be destroyed in a dedicated change, so we can
trivially confirm that the base is being destroyed.

This is a partial implementation of #7362.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2026-10-01 21:37:17 +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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/class/adapt.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/class/adapt.carbon
// --- adapt_class.carbon
library "[[@TEST_NAME]]";
class PairOfInts {
var a: i32;
var b: i32;
fn Make() -> Self {
return {.a = 1, .b = 2};
}
}
class PairAdapter {
adapt PairOfInts;
fn Make() -> Self {
return PairOfInts.Make() as Self;
}
fn GetB(self) -> i32 {
let pi: PairOfInts = self as PairOfInts;
return pi.b;
}
}
fn Use() -> i32 {
var pa: PairAdapter = PairAdapter.Make();
return pa.GetB();
}
// --- adapt_int.carbon
library "[[@TEST_NAME]]";
class Int {
adapt i32;
impl as Core.Copy {
fn Op(self) -> Self { return (self as i32).(Core.Copy.Op)() as Int; }
}
}
fn DoStuff(a: Int) -> Int {
return a;
}
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'adapt_class.carbon'
// CHECK:STDOUT: source_filename = "adapt_class.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @PairOfInts.val.loc9_28 = internal constant { i32, i32 } { i32 1, i32 2 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMake.PairOfInts.Main(ptr sret({ i32, i32 }) %return) #0 !dbg !32 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc9_27.3.a = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 0, !dbg !35
// CHECK:STDOUT: %.loc9_27.6.b = getelementptr inbounds nuw { i32, i32 }, ptr %return, i32 0, i32 1, !dbg !35
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %return, ptr align 4 @PairOfInts.val.loc9_28, i64 8, i1 false), !dbg !36
// CHECK:STDOUT: ret void, !dbg !36
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMake.PairAdapter.Main(ptr sret({ i32, i32 }) %return) #0 !dbg !37 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CMake.PairOfInts.Main(ptr %return), !dbg !40
// CHECK:STDOUT: ret void, !dbg !41
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CGetB.PairAdapter.Main(ptr %self) #0 !dbg !42 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc22_14.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !50
// CHECK:STDOUT: %.loc22_14.2 = load i32, ptr %.loc22_14.1.b, align 4, !dbg !50
// CHECK:STDOUT: ret i32 %.loc22_14.2, !dbg !51
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CUse.Main() #0 !dbg !53 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %pa.var = alloca { i32, i32 }, align 4, !dbg !56
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %pa.var), !dbg !56
// CHECK:STDOUT: call void @_CMake.PairAdapter.Main(ptr %pa.var), !dbg !57
// CHECK:STDOUT: %PairAdapter.GetB.call = call i32 @_CGetB.PairAdapter.Main(ptr %pa.var), !dbg !59
// CHECK:STDOUT: call void @"_CSelfDestruct.865f2ef613cc5c67:core.Destroy.Core"(ptr %pa.var), !dbg !56
// CHECK:STDOUT: ret i32 %PairAdapter.GetB.call, !dbg !60
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !61 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !63
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core"(ptr %self) #0 !dbg !65 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc27_3.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !67
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc27_3.1.b), !dbg !67
// CHECK:STDOUT: %.loc27_3.2.a = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 0, !dbg !67
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc27_3.2.a), !dbg !67
// CHECK:STDOUT: ret void, !dbg !67
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.b4c762864cd9a02b:core.Destroy.Core"(ptr %self) #0 !dbg !69 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core"(ptr %self), !dbg !71
// CHECK:STDOUT: ret void, !dbg !71
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.a031f5a2c623d311:core.Destroy.Core"(ptr %self) #0 !dbg !73 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc27_3.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !75
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc27_3.1.b), !dbg !75
// CHECK:STDOUT: %.loc27_3.2.a = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 0, !dbg !75
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc27_3.2.a), !dbg !75
// CHECK:STDOUT: ret void, !dbg !75
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.a031f5a2c623d311:core.Destroy.Core"(ptr %self) #0 !dbg !77 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.a031f5a2c623d311:core.Destroy.Core"(ptr %self), !dbg !79
// CHECK:STDOUT: ret void, !dbg !79
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.865f2ef613cc5c67:core.Destroy.Core"(ptr %self) #0 !dbg !81 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !83
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!19}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !18 = !DIFile(filename: "adapt_class.carbon", directory: "")
// CHECK:STDOUT: !19 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !18, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !22 = !{!21}
// CHECK:STDOUT: !23 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !24 = !{!20, !21}
// CHECK:STDOUT: !25 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !26 = !{!20}
// CHECK:STDOUT: !27 = !DISubroutineType(types: !26)
// CHECK:STDOUT: !28 = !{null, !20}
// CHECK:STDOUT: !29 = !DISubroutineType(types: !28)
// CHECK:STDOUT: !30 = !{null, !21}
// CHECK:STDOUT: !31 = !DISubroutineType(types: !30)
// CHECK:STDOUT: !32 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairOfInts.Main", scope: null, file: !18, line: 8, type: !23, spFlags: DISPFlagDefinition, unit: !19)
// CHECK:STDOUT: !35 = !DILocation(line: 9, column: 12, scope: !32)
// CHECK:STDOUT: !36 = !DILocation(line: 9, column: 5, scope: !32)
// CHECK:STDOUT: !37 = distinct !DISubprogram(name: "Make", linkageName: "_CMake.PairAdapter.Main", scope: null, file: !18, line: 16, type: !23, spFlags: DISPFlagDefinition, unit: !19)
// CHECK:STDOUT: !40 = !DILocation(line: 17, column: 12, scope: !37)
// CHECK:STDOUT: !41 = !DILocation(line: 17, column: 5, scope: !37)
// CHECK:STDOUT: !42 = distinct !DISubprogram(name: "GetB", linkageName: "_CGetB.PairAdapter.Main", scope: null, file: !18, line: 20, type: !25, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !52)
// CHECK:STDOUT: !43 = !DILocalVariable(arg: 1, scope: !42, type: !21)
// CHECK:STDOUT: !50 = !DILocation(line: 22, column: 12, scope: !42)
// CHECK:STDOUT: !51 = !DILocation(line: 22, column: 5, scope: !42)
// CHECK:STDOUT: !52 = !{!43}
// CHECK:STDOUT: !53 = distinct !DISubprogram(name: "Use", linkageName: "_CUse.Main", scope: null, file: !18, line: 26, type: !27, spFlags: DISPFlagDefinition, unit: !19)
// CHECK:STDOUT: !56 = !DILocation(line: 27, column: 3, scope: !53)
// CHECK:STDOUT: !57 = !DILocation(line: 27, column: 25, scope: !53)
// CHECK:STDOUT: !59 = !DILocation(line: 28, column: 10, scope: !53)
// CHECK:STDOUT: !60 = !DILocation(line: 28, column: 3, scope: !53)
// CHECK:STDOUT: !61 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.f58524831c37807e:core.Destroy.Core", scope: null, file: !18, line: 27, type: !29, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !64)
// CHECK:STDOUT: !62 = !DILocalVariable(arg: 1, scope: !61, type: !20)
// CHECK:STDOUT: !63 = !DILocation(line: 27, column: 3, scope: !61)
// CHECK:STDOUT: !64 = !{!62}
// CHECK:STDOUT: !65 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core", scope: null, file: !18, line: 27, type: !31, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !68)
// CHECK:STDOUT: !66 = !DILocalVariable(arg: 1, scope: !65, type: !21)
// CHECK:STDOUT: !67 = !DILocation(line: 27, column: 3, scope: !65)
// CHECK:STDOUT: !68 = !{!66}
// CHECK:STDOUT: !69 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.b4c762864cd9a02b:core.Destroy.Core", scope: null, file: !18, line: 27, type: !31, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !72)
// CHECK:STDOUT: !70 = !DILocalVariable(arg: 1, scope: !69, type: !21)
// CHECK:STDOUT: !71 = !DILocation(line: 27, column: 3, scope: !69)
// CHECK:STDOUT: !72 = !{!70}
// CHECK:STDOUT: !73 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.a031f5a2c623d311:core.Destroy.Core", scope: null, file: !18, line: 27, type: !31, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !76)
// CHECK:STDOUT: !74 = !DILocalVariable(arg: 1, scope: !73, type: !21)
// CHECK:STDOUT: !75 = !DILocation(line: 27, column: 3, scope: !73)
// CHECK:STDOUT: !76 = !{!74}
// CHECK:STDOUT: !77 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.a031f5a2c623d311:core.Destroy.Core", scope: null, file: !18, line: 27, type: !31, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !80)
// CHECK:STDOUT: !78 = !DILocalVariable(arg: 1, scope: !77, type: !21)
// CHECK:STDOUT: !79 = !DILocation(line: 27, column: 3, scope: !77)
// CHECK:STDOUT: !80 = !{!78}
// CHECK:STDOUT: !81 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.865f2ef613cc5c67:core.Destroy.Core", scope: null, file: !18, line: 27, type: !31, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !84)
// CHECK:STDOUT: !82 = !DILocalVariable(arg: 1, scope: !81, type: !21)
// CHECK:STDOUT: !83 = !DILocation(line: 27, column: 3, scope: !81)
// CHECK:STDOUT: !84 = !{!82}
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'adapt_int.carbon'
// CHECK:STDOUT: source_filename = "adapt_int.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @"_COp.Int.Main:Copy.Core"(i32 %self) #0 !dbg !89 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret i32 %self, !dbg !96
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CDoStuff.Main(i32 %a) #0 !dbg !98 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call = call i32 @"_COp.Int.Main:Copy.Core"(i32 %a), !dbg !103
// CHECK:STDOUT: ret i32 %Int.as.Copy.impl.Op.call, !dbg !104
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!86}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !85 = !DIFile(filename: "adapt_int.carbon", directory: "")
// CHECK:STDOUT: !86 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !85, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !87 = !{!20, !20}
// CHECK:STDOUT: !88 = !DISubroutineType(types: !87)
// CHECK:STDOUT: !89 = distinct !DISubprogram(name: "Op", linkageName: "_COp.Int.Main:Copy.Core", scope: null, file: !85, line: 8, type: !88, spFlags: DISPFlagDefinition, unit: !86, retainedNodes: !97)
// CHECK:STDOUT: !90 = !DILocalVariable(arg: 1, scope: !89, type: !20)
// CHECK:STDOUT: !96 = !DILocation(line: 8, column: 27, scope: !89)
// CHECK:STDOUT: !97 = !{!90}
// CHECK:STDOUT: !98 = distinct !DISubprogram(name: "DoStuff", linkageName: "_CDoStuff.Main", scope: null, file: !85, line: 12, type: !88, spFlags: DISPFlagDefinition, unit: !86, retainedNodes: !105)
// CHECK:STDOUT: !99 = !DILocalVariable(arg: 1, scope: !98, type: !20)
// CHECK:STDOUT: !103 = !DILocation(line: 13, column: 10, scope: !98)
// CHECK:STDOUT: !104 = !DILocation(line: 13, column: 3, scope: !98)
// CHECK:STDOUT: !105 = !{!99}
// CHECK:STDOUT:
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