Add Destroy.SubobjectDestroy as a temporary replacement for Destroy.Op (#7773)

This change partially implements [PR #7362], which revises how objects
are destroyed. It is a partial implementation for two reasons:

1. This change moves `Destroy.Op`'s current behaviour into
`Destroy.SubobjectDestroy`, but it doesn't add support for objects with
non-trivial destruction.
2. `Destroy.SubobjectDestroy` is a workaround for `require impls
SubobjectDestroy`. We aren't able to use the latter until the dependents
add their requirements' implementations to their own witness tables.

[PR #7362]: https://github.com/carbon-language/carbon-lang/pulls/7362
This commit is contained in:
Christopher Di Bella
2026-09-24 00:06:28 +00:00
committed by GitHub
parent 03939a9223
commit f7cd39428e
309 changed files with 51760 additions and 15269 deletions
@@ -54,8 +54,8 @@ void f() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: %.addr = alloca i32, align 4
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !32
// CHECK:STDOUT: store i32 %0, ptr %.addr, align 4, !tbaa !34
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !40
// CHECK:STDOUT: store i32 %0, ptr %.addr, align 4, !tbaa !42
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @_COneArg__carbon_thunk.OneArg.Main(ptr noundef nonnull align 1 %this1, ptr noundef nonnull align 4 dereferenceable(4) %.addr)
// CHECK:STDOUT: ret void
@@ -65,7 +65,7 @@ void f() {
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN6Carbon6OneArgD2Ev(ptr noundef nonnull align 1 %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !32
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !40
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @"_C__destroy_thunk:thunk.OneArg.Main"(ptr noundef nonnull align 1 %this1)
// CHECK:STDOUT: ret void
@@ -79,22 +79,35 @@ void f() {
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.OneArg.Main"(ptr %self) #4 !dbg !15 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.7040ef4e2429d520:core.Destroy.Core"(ptr %self), !dbg !17
// CHECK:STDOUT: call void @"_CSelfDestruct.7040ef4e2429d520:core.Destroy.Core"(ptr %self), !dbg !17
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.7040ef4e2429d520:core.Destroy.Core"(ptr %self) #5 !dbg !19 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.cb8adced19392b99:core.Destroy.Core"(ptr %self) #5 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneArg__carbon_thunk.OneArg.Main(ptr %_, ptr %_1) #5 !dbg !23 {
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.7040ef4e2429d520:core.Destroy.Core"(ptr %self) #5 !dbg !23 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc6_28.2 = load i32, ptr %_1, align 4, !dbg !26
// CHECK:STDOUT: call void @_COneArg.OneArg.Main(ptr %_, i32 %.loc6_28.2), !dbg !26
// CHECK:STDOUT: ret void, !dbg !26
// CHECK:STDOUT: ret void, !dbg !25
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.7040ef4e2429d520:core.Destroy.Core"(ptr %self) #5 !dbg !27 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.7040ef4e2429d520:core.Destroy.Core"(ptr %self), !dbg !29
// CHECK:STDOUT: ret void, !dbg !29
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_COneArg__carbon_thunk.OneArg.Main(ptr %_, ptr %_1) #5 !dbg !31 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc6_28.2 = load i32, ptr %_1, align 4, !dbg !34
// CHECK:STDOUT: call void @_COneArg.OneArg.Main(ptr %_, i32 %.loc6_28.2), !dbg !34
// CHECK:STDOUT: ret void, !dbg !34
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
@@ -105,8 +118,8 @@ void f() {
// CHECK:STDOUT: attributes #5 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.module.flags = !{!35, !36, !37, !3, !4}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!39}
// CHECK:STDOUT: !llvm.module.flags = !{!43, !44, !45, !3, !4}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!47}
// CHECK:STDOUT:
// CHECK:STDOUT: !3 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !4 = !{i32 2, !"Debug Info Version", i32 3}
@@ -122,25 +135,33 @@ void f() {
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !15, type: !8)
// CHECK:STDOUT: !17 = !DILocation(line: 5, column: 1, scope: !15)
// CHECK:STDOUT: !18 = !{!16}
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7040ef4e2429d520:core.Destroy.Core", scope: null, file: !5, line: 5, type: !12, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !22)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.cb8adced19392b99:core.Destroy.Core", scope: null, file: !5, line: 5, type: !12, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !22)
// CHECK:STDOUT: !20 = !DILocalVariable(arg: 1, scope: !19, type: !8)
// CHECK:STDOUT: !21 = !DILocation(line: 5, column: 1, scope: !19)
// CHECK:STDOUT: !22 = !{!20}
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "OneArg__carbon_thunk", linkageName: "_COneArg__carbon_thunk.OneArg.Main", scope: null, file: !5, line: 6, type: !14, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !27)
// CHECK:STDOUT: !23 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.7040ef4e2429d520:core.Destroy.Core", scope: null, file: !5, line: 5, type: !12, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !26)
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !23, type: !8)
// CHECK:STDOUT: !25 = !DILocalVariable(arg: 2, scope: !23, type: !7)
// CHECK:STDOUT: !26 = !DILocation(line: 6, column: 3, scope: !23)
// CHECK:STDOUT: !27 = !{!24, !25}
// CHECK:STDOUT: !28 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !29 = !{!"omnipotent char", !28, i64 0}
// CHECK:STDOUT: !30 = !{!"any pointer", !29, i64 0}
// CHECK:STDOUT: !31 = !{!"p1 _ZTSN6Carbon6OneArgE", !30, i64 0}
// CHECK:STDOUT: !32 = !{!31, !31, i64 0}
// CHECK:STDOUT: !33 = !{!"int", !29, i64 0}
// CHECK:STDOUT: !34 = !{!33, !33, i64 0}
// CHECK:STDOUT: !35 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !36 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !37 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !38 = !{!"__libc_errno", !33, i64 0}
// CHECK:STDOUT: !39 = !{!38, !33, i64 0}
// CHECK:STDOUT: !25 = !DILocation(line: 5, column: 1, scope: !23)
// CHECK:STDOUT: !26 = !{!24}
// CHECK:STDOUT: !27 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.7040ef4e2429d520:core.Destroy.Core", scope: null, file: !5, line: 5, type: !12, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !30)
// CHECK:STDOUT: !28 = !DILocalVariable(arg: 1, scope: !27, type: !8)
// CHECK:STDOUT: !29 = !DILocation(line: 5, column: 1, scope: !27)
// CHECK:STDOUT: !30 = !{!28}
// CHECK:STDOUT: !31 = distinct !DISubprogram(name: "OneArg__carbon_thunk", linkageName: "_COneArg__carbon_thunk.OneArg.Main", scope: null, file: !5, line: 6, type: !14, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !35)
// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !31, type: !8)
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 2, scope: !31, type: !7)
// CHECK:STDOUT: !34 = !DILocation(line: 6, column: 3, scope: !31)
// CHECK:STDOUT: !35 = !{!32, !33}
// CHECK:STDOUT: !36 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !37 = !{!"omnipotent char", !36, i64 0}
// CHECK:STDOUT: !38 = !{!"any pointer", !37, i64 0}
// CHECK:STDOUT: !39 = !{!"p1 _ZTSN6Carbon6OneArgE", !38, i64 0}
// CHECK:STDOUT: !40 = !{!39, !39, i64 0}
// CHECK:STDOUT: !41 = !{!"int", !37, i64 0}
// CHECK:STDOUT: !42 = !{!41, !41, i64 0}
// CHECK:STDOUT: !43 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !44 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !45 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !46 = !{!"__libc_errno", !41, i64 0}
// CHECK:STDOUT: !47 = !{!46, !41, i64 0}
// CHECK:STDOUT:
@@ -142,7 +142,7 @@ fn Run() {
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN6Carbon1AD2Ev(ptr noundef nonnull align 1 %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !71
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !83
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @"_C__destroy_thunk:thunk.A.Main"(ptr noundef nonnull align 1 %this1)
// CHECK:STDOUT: ret void
@@ -160,7 +160,7 @@ fn Run() {
// CHECK:STDOUT: define linkonce_odr dso_local void @_ZN6Carbon1BD2Ev(ptr noundef nonnull align 1 %this) unnamed_addr #3 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !73
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !85
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: call void @"_C__destroy_thunk:thunk.B.Main"(ptr noundef nonnull align 1 %this1)
// CHECK:STDOUT: ret void
@@ -184,62 +184,82 @@ fn Run() {
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.A.Main"(ptr %self) #5 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.5a23cc09585c55d2:core.Destroy.Core"(ptr %self), !dbg !30
// CHECK:STDOUT: call void @"_CSelfDestruct.5a23cc09585c55d2:core.Destroy.Core"(ptr %self), !dbg !30
// CHECK:STDOUT: ret void, !dbg !30
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.5a23cc09585c55d2:core.Destroy.Core"(ptr %self) #4 !dbg !32 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.cb8adced19392b99:core.Destroy.Core"(ptr %self) #4 !dbg !32 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !34
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.B.Main"(ptr %self) #5 !dbg !36 {
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.5a23cc09585c55d2:core.Destroy.Core"(ptr %self) #4 !dbg !36 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_COp.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self), !dbg !38
// CHECK:STDOUT: ret void, !dbg !38
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self) #4 !dbg !40 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.5a23cc09585c55d2:core.Destroy.Core"(ptr %self) #4 !dbg !40 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.5a23cc09585c55d2:core.Destroy.Core"(ptr %self), !dbg !42
// CHECK:STDOUT: ret void, !dbg !42
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF__carbon_thunk.26f2099a79512a5d.Main(ptr %_) #4 !dbg !44 {
// CHECK:STDOUT: ; Function Attrs: alwaysinline nounwind
// CHECK:STDOUT: define weak_odr void @"_C__destroy_thunk:thunk.B.Main"(ptr %self) #5 !dbg !44 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF.Main.6662a1ffb773360a(ptr %_), !dbg !46
// CHECK:STDOUT: call void @"_CSelfDestruct.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self), !dbg !46
// CHECK:STDOUT: ret void, !dbg !46
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF__carbon_thunk.7a3b9f04ddf4269e.Main(ptr %_) #4 !dbg !48 {
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self) #4 !dbg !48 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_CF.Main.d53b17eed3ce903c(ptr %_), !dbg !50
// CHECK:STDOUT: ret void, !dbg !50
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @main() #4 !dbg !52 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self) #4 !dbg !52 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Z1Gv(), !dbg !53
// CHECK:STDOUT: ret i32 0, !dbg !54
// CHECK:STDOUT: call void @"_CSubobjectDestroy.8c4b83ecd900f1ea:core.Destroy.Core"(ptr %self), !dbg !54
// CHECK:STDOUT: ret void, !dbg !54
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.6662a1ffb773360a(ptr %t) #4 !dbg !55 {
// CHECK:STDOUT: define void @_CF__carbon_thunk.26f2099a79512a5d.Main(ptr %_) #4 !dbg !56 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CDoit.A.Main:I.Main"(ptr %t), !dbg !58
// CHECK:STDOUT: ret void, !dbg !59
// CHECK:STDOUT: call void @_CF.Main.6662a1ffb773360a(ptr %_), !dbg !58
// CHECK:STDOUT: ret void, !dbg !58
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.d53b17eed3ce903c(ptr %t) #4 !dbg !61 {
// CHECK:STDOUT: define void @_CF__carbon_thunk.7a3b9f04ddf4269e.Main(ptr %_) #4 !dbg !60 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CDoit.B.Main:I.Main"(ptr %t), !dbg !64
// CHECK:STDOUT: ret void, !dbg !65
// CHECK:STDOUT: call void @_CF.Main.d53b17eed3ce903c(ptr %_), !dbg !62
// CHECK:STDOUT: ret void, !dbg !62
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @main() #4 !dbg !64 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @_Z1Gv(), !dbg !65
// CHECK:STDOUT: ret i32 0, !dbg !66
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.6662a1ffb773360a(ptr %t) #4 !dbg !67 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CDoit.A.Main:I.Main"(ptr %t), !dbg !70
// CHECK:STDOUT: ret void, !dbg !71
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_CF.Main.d53b17eed3ce903c(ptr %t) #4 !dbg !73 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CDoit.B.Main:I.Main"(ptr %t), !dbg !76
// CHECK:STDOUT: ret void, !dbg !77
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
@@ -256,8 +276,8 @@ fn Run() {
// CHECK:STDOUT: attributes #5 = { alwaysinline nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!9}
// CHECK:STDOUT: !llvm.module.flags = !{!74, !75, !76, !4, !5}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!79}
// CHECK:STDOUT: !llvm.module.flags = !{!86, !87, !88, !4, !5}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!91}
// CHECK:STDOUT:
// CHECK:STDOUT: !4 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !5 = !{i32 2, !"Debug Info Version", i32 3}
@@ -281,50 +301,62 @@ fn Run() {
// CHECK:STDOUT: !29 = !DILocalVariable(arg: 1, scope: !28, type: !10)
// CHECK:STDOUT: !30 = !DILocation(line: 8, column: 1, scope: !28)
// CHECK:STDOUT: !31 = !{!29}
// CHECK:STDOUT: !32 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5a23cc09585c55d2:core.Destroy.Core", scope: null, file: !8, line: 8, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !35)
// CHECK:STDOUT: !32 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.cb8adced19392b99:core.Destroy.Core", scope: null, file: !8, line: 8, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !35)
// CHECK:STDOUT: !33 = !DILocalVariable(arg: 1, scope: !32, type: !10)
// CHECK:STDOUT: !34 = !DILocation(line: 8, column: 1, scope: !32)
// CHECK:STDOUT: !35 = !{!33}
// CHECK:STDOUT: !36 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.B.Main", scope: null, file: !8, line: 13, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !39)
// CHECK:STDOUT: !36 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.5a23cc09585c55d2:core.Destroy.Core", scope: null, file: !8, line: 8, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !39)
// CHECK:STDOUT: !37 = !DILocalVariable(arg: 1, scope: !36, type: !10)
// CHECK:STDOUT: !38 = !DILocation(line: 13, column: 1, scope: !36)
// CHECK:STDOUT: !38 = !DILocation(line: 8, column: 1, scope: !36)
// CHECK:STDOUT: !39 = !{!37}
// CHECK:STDOUT: !40 = distinct !DISubprogram(name: "Op", linkageName: "_COp.8c4b83ecd900f1ea:core.Destroy.Core", scope: null, file: !8, line: 13, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !43)
// CHECK:STDOUT: !40 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.5a23cc09585c55d2:core.Destroy.Core", scope: null, file: !8, line: 8, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !43)
// CHECK:STDOUT: !41 = !DILocalVariable(arg: 1, scope: !40, type: !10)
// CHECK:STDOUT: !42 = !DILocation(line: 13, column: 1, scope: !40)
// CHECK:STDOUT: !42 = !DILocation(line: 8, column: 1, scope: !40)
// CHECK:STDOUT: !43 = !{!41}
// CHECK:STDOUT: !44 = distinct !DISubprogram(name: "F__carbon_thunk.26f2099a79512a5d", linkageName: "_CF__carbon_thunk.26f2099a79512a5d.Main", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !47)
// CHECK:STDOUT: !44 = distinct !DISubprogram(name: "__destroy_thunk", linkageName: "_C__destroy_thunk:thunk.B.Main", scope: null, file: !8, line: 13, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !47)
// CHECK:STDOUT: !45 = !DILocalVariable(arg: 1, scope: !44, type: !10)
// CHECK:STDOUT: !46 = !DILocation(line: 19, column: 1, scope: !44)
// CHECK:STDOUT: !46 = !DILocation(line: 13, column: 1, scope: !44)
// CHECK:STDOUT: !47 = !{!45}
// CHECK:STDOUT: !48 = distinct !DISubprogram(name: "F__carbon_thunk.7a3b9f04ddf4269e", linkageName: "_CF__carbon_thunk.7a3b9f04ddf4269e.Main", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !51)
// CHECK:STDOUT: !48 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.8c4b83ecd900f1ea:core.Destroy.Core", scope: null, file: !8, line: 13, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !51)
// CHECK:STDOUT: !49 = !DILocalVariable(arg: 1, scope: !48, type: !10)
// CHECK:STDOUT: !50 = !DILocation(line: 19, column: 1, scope: !48)
// CHECK:STDOUT: !50 = !DILocation(line: 13, column: 1, scope: !48)
// CHECK:STDOUT: !51 = !{!49}
// CHECK:STDOUT: !52 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !8, line: 32, type: !15, spFlags: DISPFlagDefinition, unit: !9)
// CHECK:STDOUT: !53 = !DILocation(line: 33, column: 3, scope: !52)
// CHECK:STDOUT: !54 = !DILocation(line: 32, column: 1, scope: !52)
// CHECK:STDOUT: !55 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.6662a1ffb773360a", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !60)
// CHECK:STDOUT: !56 = !DILocalVariable(arg: 1, scope: !55, type: !10)
// CHECK:STDOUT: !58 = !DILocation(line: 20, column: 3, scope: !55)
// CHECK:STDOUT: !59 = !DILocation(line: 19, column: 1, scope: !55)
// CHECK:STDOUT: !60 = !{!56}
// CHECK:STDOUT: !61 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.d53b17eed3ce903c", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !66)
// CHECK:STDOUT: !62 = !DILocalVariable(arg: 1, scope: !61, type: !10)
// CHECK:STDOUT: !64 = !DILocation(line: 20, column: 3, scope: !61)
// CHECK:STDOUT: !65 = !DILocation(line: 19, column: 1, scope: !61)
// CHECK:STDOUT: !66 = !{!62}
// CHECK:STDOUT: !67 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !68 = !{!"omnipotent char", !67, i64 0}
// CHECK:STDOUT: !69 = !{!"any pointer", !68, i64 0}
// CHECK:STDOUT: !70 = !{!"p1 _ZTSN6Carbon1AE", !69, i64 0}
// CHECK:STDOUT: !71 = !{!70, !70, i64 0}
// CHECK:STDOUT: !72 = !{!"p1 _ZTSN6Carbon1BE", !69, i64 0}
// CHECK:STDOUT: !73 = !{!72, !72, i64 0}
// CHECK:STDOUT: !74 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !75 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !76 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !77 = !{!"int", !68, i64 0}
// CHECK:STDOUT: !78 = !{!"__libc_errno", !77, i64 0}
// CHECK:STDOUT: !79 = !{!78, !77, i64 0}
// CHECK:STDOUT: !52 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.8c4b83ecd900f1ea:core.Destroy.Core", scope: null, file: !8, line: 13, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !55)
// CHECK:STDOUT: !53 = !DILocalVariable(arg: 1, scope: !52, type: !10)
// CHECK:STDOUT: !54 = !DILocation(line: 13, column: 1, scope: !52)
// CHECK:STDOUT: !55 = !{!53}
// CHECK:STDOUT: !56 = distinct !DISubprogram(name: "F__carbon_thunk.26f2099a79512a5d", linkageName: "_CF__carbon_thunk.26f2099a79512a5d.Main", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !59)
// CHECK:STDOUT: !57 = !DILocalVariable(arg: 1, scope: !56, type: !10)
// CHECK:STDOUT: !58 = !DILocation(line: 19, column: 1, scope: !56)
// CHECK:STDOUT: !59 = !{!57}
// CHECK:STDOUT: !60 = distinct !DISubprogram(name: "F__carbon_thunk.7a3b9f04ddf4269e", linkageName: "_CF__carbon_thunk.7a3b9f04ddf4269e.Main", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !63)
// CHECK:STDOUT: !61 = !DILocalVariable(arg: 1, scope: !60, type: !10)
// CHECK:STDOUT: !62 = !DILocation(line: 19, column: 1, scope: !60)
// CHECK:STDOUT: !63 = !{!61}
// CHECK:STDOUT: !64 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !8, line: 32, type: !15, spFlags: DISPFlagDefinition, unit: !9)
// CHECK:STDOUT: !65 = !DILocation(line: 33, column: 3, scope: !64)
// CHECK:STDOUT: !66 = !DILocation(line: 32, column: 1, scope: !64)
// CHECK:STDOUT: !67 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.6662a1ffb773360a", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !72)
// CHECK:STDOUT: !68 = !DILocalVariable(arg: 1, scope: !67, type: !10)
// CHECK:STDOUT: !70 = !DILocation(line: 20, column: 3, scope: !67)
// CHECK:STDOUT: !71 = !DILocation(line: 19, column: 1, scope: !67)
// CHECK:STDOUT: !72 = !{!68}
// CHECK:STDOUT: !73 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main.d53b17eed3ce903c", scope: null, file: !8, line: 19, type: !12, spFlags: DISPFlagDefinition, unit: !9, retainedNodes: !78)
// CHECK:STDOUT: !74 = !DILocalVariable(arg: 1, scope: !73, type: !10)
// CHECK:STDOUT: !76 = !DILocation(line: 20, column: 3, scope: !73)
// CHECK:STDOUT: !77 = !DILocation(line: 19, column: 1, scope: !73)
// CHECK:STDOUT: !78 = !{!74}
// CHECK:STDOUT: !79 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !80 = !{!"omnipotent char", !79, i64 0}
// CHECK:STDOUT: !81 = !{!"any pointer", !80, i64 0}
// CHECK:STDOUT: !82 = !{!"p1 _ZTSN6Carbon1AE", !81, i64 0}
// CHECK:STDOUT: !83 = !{!82, !82, i64 0}
// CHECK:STDOUT: !84 = !{!"p1 _ZTSN6Carbon1BE", !81, i64 0}
// CHECK:STDOUT: !85 = !{!84, !84, i64 0}
// CHECK:STDOUT: !86 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !87 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !88 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !89 = !{!"int", !80, i64 0}
// CHECK:STDOUT: !90 = !{!"__libc_errno", !89, i64 0}
// CHECK:STDOUT: !91 = !{!90, !89, i64 0}
// CHECK:STDOUT: