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carbon-lang/toolchain/lower/testdata/class/field.carbon
T
Richard Smith a6061d975c Compute type layouts in SemIR / Check (#7066) 
Instead of allowing lower to pick whatever type layout it desires,
compute the layouts of types as part of completing the type, and make
lower build types that match that representation.

For now we assume that all pointers are 64-bit, since we don't have
access to target information. We allow tail padding reuse for structs
and tuple types (and by extension, for classes, since they use structs
as their object representation), but not for arrays.

In order to build matching LLVM types, we create LLVM packed structs
where necessary, and we insert inter-field padding on the end of the
previous field so that GEP indexes still always match Carbon's
ElementIndexes.

We don't yet use the computed alignment much in LLVM IR generation -- in
particular, `alloca`s, `load`s, and `store`s should probably use the
computed type alignment, but don't.

Assisted-by: Gemini via Antigravity
2026-04-16 22:37:48 +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/field.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/class/field.carbon
// --- basic.carbon
library "[[@TEST_NAME]]";
class C {
var a: i32;
var b: C*;
}
fn F(c: C) -> i32 {
return (*c.b).a;
}
fn Run() -> i32 {
var c: C;
c.a = 1;
c.b = &c;
return F(c);
}
// --- inplace_init_with_nonconst.carbon
library "[[@TEST_NAME]]";
class Other { }
class Use {
var a: Other*;
var b: Other;
}
fn Run() {
var o: Other;
// .a is initialized with a non-constant expression
// .b is initialized with in-place class_init
var _: Use = {.a = &o, .b = {}};
}
// --- implicit_init_with_nonempty_nonconst.carbon
library "[[@TEST_NAME]]";
class Other {
var v: i32;
}
class Use {
var a: Other*;
var b: Other;
}
fn Run() {
var o: Other;
// .a is initialized with a non-constant expression
// .b is initialized with in-place class_init
var _: Use = {.a = &o, .b = {.v = 42}};
}
// CHECK:STDOUT: ; ModuleID = 'basic.carbon'
// CHECK:STDOUT: source_filename = "basic.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CF.Main(ptr %c) #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc10_13.1.b = getelementptr inbounds nuw { i32, ptr }, ptr %c, i32 0, i32 1, !dbg !11
// CHECK:STDOUT: %.loc10_13.2 = load ptr, ptr %.loc10_13.1.b, align 8, !dbg !11
// CHECK:STDOUT: %.loc10_16.1.a = getelementptr inbounds nuw { i32, ptr }, ptr %.loc10_13.2, i32 0, i32 0, !dbg !12
// CHECK:STDOUT: %.loc10_16.2 = load i32, ptr %.loc10_16.1.a, align 4, !dbg !12
// CHECK:STDOUT: ret i32 %.loc10_16.2, !dbg !13
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @main() #0 !dbg !14 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %c.var = alloca { i32, ptr }, align 8, !dbg !17
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %c.var), !dbg !17
// CHECK:STDOUT: %.loc15_4.a = getelementptr inbounds nuw { i32, ptr }, ptr %c.var, i32 0, i32 0, !dbg !18
// CHECK:STDOUT: store i32 1, ptr %.loc15_4.a, align 4, !dbg !18
// CHECK:STDOUT: %.loc16.b = getelementptr inbounds nuw { i32, ptr }, ptr %c.var, i32 0, i32 1, !dbg !19
// CHECK:STDOUT: store ptr %c.var, ptr %.loc16.b, align 8, !dbg !19
// CHECK:STDOUT: %F.call = call i32 @_CF.Main(ptr %c.var), !dbg !20
// CHECK:STDOUT: call void @"_COp.71e25083d63c4d6c:core.Destroy.Core"(ptr %c.var), !dbg !17
// CHECK:STDOUT: ret i32 %F.call, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !27
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.e7e7253cfbad8551:core.Destroy.Core"(ptr %self) #0 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !33
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.71e25083d63c4d6c:core.Destroy.Core"(ptr %self) #0 !dbg !34 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !37
// CHECK:STDOUT: }
// 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.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_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "basic.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 9, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !9)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !8}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !9 = !{!10}
// CHECK:STDOUT: !10 = !DILocalVariable(arg: 1, scope: !4, type: !8)
// CHECK:STDOUT: !11 = !DILocation(line: 10, column: 12, scope: !4)
// CHECK:STDOUT: !12 = !DILocation(line: 10, column: 10, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 10, column: 3, scope: !4)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 13, type: !15, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !15 = !DISubroutineType(types: !16)
// CHECK:STDOUT: !16 = !{!7}
// CHECK:STDOUT: !17 = !DILocation(line: 14, column: 3, scope: !14)
// CHECK:STDOUT: !18 = !DILocation(line: 15, column: 3, scope: !14)
// CHECK:STDOUT: !19 = !DILocation(line: 16, column: 3, scope: !14)
// CHECK:STDOUT: !20 = !DILocation(line: 17, column: 10, scope: !14)
// CHECK:STDOUT: !21 = !DILocation(line: 17, column: 3, scope: !14)
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 14, type: !23, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !25)
// CHECK:STDOUT: !23 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !24 = !{null, !7}
// CHECK:STDOUT: !25 = !{!26}
// CHECK:STDOUT: !26 = !DILocalVariable(arg: 1, scope: !22, type: !7)
// CHECK:STDOUT: !27 = !DILocation(line: 14, column: 3, scope: !22)
// CHECK:STDOUT: !28 = distinct !DISubprogram(name: "Op", linkageName: "_COp.e7e7253cfbad8551:core.Destroy.Core", scope: null, file: !3, line: 14, type: !29, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !31)
// CHECK:STDOUT: !29 = !DISubroutineType(types: !30)
// CHECK:STDOUT: !30 = !{null, !8}
// CHECK:STDOUT: !31 = !{!32}
// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !28, type: !8)
// CHECK:STDOUT: !33 = !DILocation(line: 14, column: 3, scope: !28)
// CHECK:STDOUT: !34 = distinct !DISubprogram(name: "Op", linkageName: "_COp.71e25083d63c4d6c:core.Destroy.Core", scope: null, file: !3, line: 14, type: !29, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !35)
// CHECK:STDOUT: !35 = !{!36}
// CHECK:STDOUT: !36 = !DILocalVariable(arg: 1, scope: !34, type: !8)
// CHECK:STDOUT: !37 = !DILocation(line: 14, column: 3, scope: !34)
// CHECK:STDOUT: ; ModuleID = 'inplace_init_with_nonconst.carbon'
// CHECK:STDOUT: source_filename = "inplace_init_with_nonconst.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @Other.val.loc15_33.5 = internal constant {} zeroinitializer
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %o.var = alloca {}, align 8, !dbg !7
// CHECK:STDOUT: %_.var = alloca { ptr, {} }, align 8, !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %o.var), !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !8
// CHECK:STDOUT: %.loc15_33.2.a = getelementptr inbounds nuw { ptr, {} }, ptr %_.var, i32 0, i32 0, !dbg !9
// CHECK:STDOUT: store ptr %o.var, ptr %.loc15_33.2.a, align 8, !dbg !9
// CHECK:STDOUT: %.loc15_33.4.b = getelementptr inbounds nuw { ptr, {} }, ptr %_.var, i32 0, i32 1, !dbg !9
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %.loc15_33.4.b, ptr align 1 @Other.val.loc15_33.5, i64 0, i1 false), !dbg !9
// CHECK:STDOUT: call void @"_COp.6354d5454c7bf77d:core.Destroy.Core"(ptr %_.var), !dbg !8
// CHECK:STDOUT: call void @"_COp.49a4972657b05a86:core.Destroy.Core"(ptr %o.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !10
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.49a4972657b05a86:core.Destroy.Core"(ptr %self) #0 !dbg !11 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !17
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.93fc877b6ab5c8f9:core.Destroy.Core"(ptr %self) #0 !dbg !18 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !21
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.6354d5454c7bf77d:core.Destroy.Core"(ptr %self) #0 !dbg !22 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !25
// CHECK:STDOUT: }
// 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: ; Function Attrs: nocallback nofree 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) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// 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_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "inplace_init_with_nonconst.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 11, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 12, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 15, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 15, column: 16, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 11, column: 1, scope: !4)
// CHECK:STDOUT: !11 = distinct !DISubprogram(name: "Op", linkageName: "_COp.49a4972657b05a86:core.Destroy.Core", scope: null, file: !3, line: 15, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !15)
// CHECK:STDOUT: !12 = !DISubroutineType(types: !13)
// CHECK:STDOUT: !13 = !{null, !14}
// CHECK:STDOUT: !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !15 = !{!16}
// CHECK:STDOUT: !16 = !DILocalVariable(arg: 1, scope: !11, type: !14)
// CHECK:STDOUT: !17 = !DILocation(line: 15, column: 3, scope: !11)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Op", linkageName: "_COp.93fc877b6ab5c8f9:core.Destroy.Core", scope: null, file: !3, line: 15, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !19)
// CHECK:STDOUT: !19 = !{!20}
// CHECK:STDOUT: !20 = !DILocalVariable(arg: 1, scope: !18, type: !14)
// CHECK:STDOUT: !21 = !DILocation(line: 15, column: 3, scope: !18)
// CHECK:STDOUT: !22 = distinct !DISubprogram(name: "Op", linkageName: "_COp.6354d5454c7bf77d:core.Destroy.Core", scope: null, file: !3, line: 15, type: !12, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !23)
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !22, type: !14)
// CHECK:STDOUT: !25 = !DILocation(line: 15, column: 3, scope: !22)
// CHECK:STDOUT: ; ModuleID = 'implicit_init_with_nonempty_nonconst.carbon'
// CHECK:STDOUT: source_filename = "implicit_init_with_nonempty_nonconst.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @Other.val.loc17_40.5 = internal constant { i32 } { i32 42 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @main() #0 !dbg !4 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %o.var = alloca { i32 }, align 8, !dbg !7
// CHECK:STDOUT: %_.var = alloca <{ ptr, { i32 } }>, align 8, !dbg !8
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %o.var), !dbg !7
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !8
// CHECK:STDOUT: %.loc17_40.2.a = getelementptr inbounds nuw <{ ptr, { i32 } }>, ptr %_.var, i32 0, i32 0, !dbg !9
// CHECK:STDOUT: store ptr %o.var, ptr %.loc17_40.2.a, align 8, !dbg !9
// CHECK:STDOUT: %.loc17_40.4.b = getelementptr inbounds nuw <{ ptr, { i32 } }>, ptr %_.var, i32 0, i32 1, !dbg !9
// CHECK:STDOUT: %.loc17_39.3.v = getelementptr inbounds nuw { i32 }, ptr %.loc17_40.4.b, i32 0, i32 0, !dbg !10
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %.loc17_40.4.b, ptr align 4 @Other.val.loc17_40.5, i64 4, i1 false), !dbg !9
// CHECK:STDOUT: call void @"_COp.6354d5454c7bf77d:core.Destroy.Core"(ptr %_.var), !dbg !8
// CHECK:STDOUT: call void @"_COp.49a4972657b05a86:core.Destroy.Core"(ptr %o.var), !dbg !7
// CHECK:STDOUT: ret void, !dbg !11
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.7e389eab4a7e5487:core.Destroy.Core"(ptr %self) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !18
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.8e62c7e21e7d5467:core.Destroy.Core"(ptr %self) #0 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !25
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.49a4972657b05a86:core.Destroy.Core"(ptr %self) #0 !dbg !26 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !29
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.93fc877b6ab5c8f9:core.Destroy.Core"(ptr %self) #0 !dbg !30 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !33
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_COp.6354d5454c7bf77d:core.Destroy.Core"(ptr %self) #0 !dbg !34 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !37
// CHECK:STDOUT: }
// 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: ; Function Attrs: nocallback nofree 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) #2
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT: attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
// 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_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "implicit_init_with_nonempty_nonconst.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "Run", linkageName: "main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{null}
// CHECK:STDOUT: !7 = !DILocation(line: 14, column: 3, scope: !4)
// CHECK:STDOUT: !8 = !DILocation(line: 17, column: 3, scope: !4)
// CHECK:STDOUT: !9 = !DILocation(line: 17, column: 16, scope: !4)
// CHECK:STDOUT: !10 = !DILocation(line: 17, column: 31, scope: !4)
// CHECK:STDOUT: !11 = !DILocation(line: 13, column: 1, scope: !4)
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "Op", linkageName: "_COp.7e389eab4a7e5487:core.Destroy.Core", scope: null, file: !3, line: 17, type: !13, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
// CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
// CHECK:STDOUT: !14 = !{null, !15}
// CHECK:STDOUT: !15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !16 = !{!17}
// CHECK:STDOUT: !17 = !DILocalVariable(arg: 1, scope: !12, type: !15)
// CHECK:STDOUT: !18 = !DILocation(line: 17, column: 3, scope: !12)
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Op", linkageName: "_COp.8e62c7e21e7d5467:core.Destroy.Core", scope: null, file: !3, line: 17, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !23)
// CHECK:STDOUT: !20 = !DISubroutineType(types: !21)
// CHECK:STDOUT: !21 = !{null, !22}
// CHECK:STDOUT: !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !19, type: !22)
// CHECK:STDOUT: !25 = !DILocation(line: 17, column: 3, scope: !19)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "Op", linkageName: "_COp.49a4972657b05a86:core.Destroy.Core", scope: null, file: !3, line: 17, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !27)
// CHECK:STDOUT: !27 = !{!28}
// CHECK:STDOUT: !28 = !DILocalVariable(arg: 1, scope: !26, type: !22)
// CHECK:STDOUT: !29 = !DILocation(line: 17, column: 3, scope: !26)
// CHECK:STDOUT: !30 = distinct !DISubprogram(name: "Op", linkageName: "_COp.93fc877b6ab5c8f9:core.Destroy.Core", scope: null, file: !3, line: 17, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !31)
// CHECK:STDOUT: !31 = !{!32}
// CHECK:STDOUT: !32 = !DILocalVariable(arg: 1, scope: !30, type: !22)
// CHECK:STDOUT: !33 = !DILocation(line: 17, column: 3, scope: !30)
// CHECK:STDOUT: !34 = distinct !DISubprogram(name: "Op", linkageName: "_COp.6354d5454c7bf77d:core.Destroy.Core", scope: null, file: !3, line: 17, type: !20, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !35)
// CHECK:STDOUT: !35 = !{!36}
// CHECK:STDOUT: !36 = !DILocalVariable(arg: 1, scope: !34, type: !22)
// CHECK:STDOUT: !37 = !DILocation(line: 17, column: 3, scope: !34)
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