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carbon-lang/toolchain/lower/testdata/pointer/address_of_field.carbon
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Christopher Di Bella b0bc5ed338 Enable SubobjectDestroy.Op to destroy a struct's fields (#7829) 
This is a partial implementation of #7362.
2026-09-29 00:13:37 +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/pointer/address_of_field.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/pointer/address_of_field.carbon
fn G(p: i32*);
fn F() {
var s: {.a: i32, .b: i32} = {.a = 1, .b = 2};
G(&s.b);
}
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'address_of_field.carbon'
// CHECK:STDOUT: source_filename = "address_of_field.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: @struct.631.loc16_3 = internal constant { i32, i32 } { i32 1, i32 2 }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CG.Main(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CF.Main() #0 !dbg !28 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %s.var = alloca { i32, i32 }, align 4, !dbg !29
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %s.var), !dbg !29
// CHECK:STDOUT: %.loc16_46.3.a = getelementptr inbounds nuw { i32, i32 }, ptr %s.var, i32 0, i32 0, !dbg !30
// CHECK:STDOUT: %.loc16_46.6.b = getelementptr inbounds nuw { i32, i32 }, ptr %s.var, i32 0, i32 1, !dbg !30
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %s.var, ptr align 4 @struct.631.loc16_3, i64 8, i1 false), !dbg !29
// CHECK:STDOUT: %.loc17.b = getelementptr inbounds nuw { i32, i32 }, ptr %s.var, i32 0, i32 1, !dbg !32
// CHECK:STDOUT: call void @_CG.Main(ptr %.loc17.b), !dbg !34
// CHECK:STDOUT: call void @"_CSelfDestruct.b4c762864cd9a02b:core.Destroy.Core"(ptr %s.var), !dbg !29
// CHECK:STDOUT: ret void, !dbg !35
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !36 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !38
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core"(ptr %self) #0 !dbg !40 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc16_3.1.b = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 1, !dbg !42
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc16_3.1.b), !dbg !42
// CHECK:STDOUT: %.loc16_3.2.a = getelementptr inbounds nuw { i32, i32 }, ptr %self, i32 0, i32 0, !dbg !42
// CHECK:STDOUT: call void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %.loc16_3.2.a), !dbg !42
// CHECK:STDOUT: ret void, !dbg !42
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.b4c762864cd9a02b:core.Destroy.Core"(ptr %self) #0 !dbg !44 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core"(ptr %self), !dbg !46
// CHECK:STDOUT: ret void, !dbg !46
// 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 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: 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: "address_of_field.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 = !{null, !21}
// CHECK:STDOUT: !23 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !24 = !{null}
// CHECK:STDOUT: !25 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !26 = !{null, !20}
// CHECK:STDOUT: !27 = !DISubroutineType(types: !26)
// CHECK:STDOUT: !28 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !18, line: 15, type: !25, spFlags: DISPFlagDefinition, unit: !19)
// CHECK:STDOUT: !29 = !DILocation(line: 16, column: 3, scope: !28)
// CHECK:STDOUT: !30 = !DILocation(line: 16, column: 31, scope: !28)
// CHECK:STDOUT: !32 = !DILocation(line: 17, column: 6, scope: !28)
// CHECK:STDOUT: !34 = !DILocation(line: 17, column: 3, scope: !28)
// CHECK:STDOUT: !35 = !DILocation(line: 15, column: 1, scope: !28)
// CHECK:STDOUT: !36 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.f58524831c37807e:core.Destroy.Core", scope: null, file: !18, line: 16, type: !27, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !39)
// CHECK:STDOUT: !37 = !DILocalVariable(arg: 1, scope: !36, type: !20)
// CHECK:STDOUT: !38 = !DILocation(line: 16, column: 3, scope: !36)
// CHECK:STDOUT: !39 = !{!37}
// CHECK:STDOUT: !40 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.b4c762864cd9a02b:core.Destroy.Core", scope: null, file: !18, line: 16, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !43)
// CHECK:STDOUT: !41 = !DILocalVariable(arg: 1, scope: !40, type: !21)
// CHECK:STDOUT: !42 = !DILocation(line: 16, column: 3, scope: !40)
// CHECK:STDOUT: !43 = !{!41}
// CHECK:STDOUT: !44 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.b4c762864cd9a02b:core.Destroy.Core", scope: null, file: !18, line: 16, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !47)
// CHECK:STDOUT: !45 = !DILocalVariable(arg: 1, scope: !44, type: !21)
// CHECK:STDOUT: !46 = !DILocation(line: 16, column: 3, scope: !44)
// CHECK:STDOUT: !47 = !{!45}
// CHECK:STDOUT:
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