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Classify classes with no struct fields as trivially destructible (#7846)

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This commit is contained in:
Christopher Di Bella
2026-09-28 22:39:03 +00:00
committed by GitHub
parent e530421ba1
commit b227419d8d
227 changed files with 9144 additions and 12453 deletions
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toolchain/lower/testdata/array/layout.carbon
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+22 -33
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@@ -67,44 +67,37 @@ var c: array(Core.Int(257), 5) = (1, 2, 3, 4, 5);
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !49 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !49 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: ret void, !dbg !51
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.f58524831c37807e:core.Destroy.Core"(ptr %self) #0 !dbg !53 {
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self) #0 !dbg !53 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.f58524831c37807e:core.Destroy.Core"(ptr %self), !dbg !55
// CHECK:STDOUT: ret void, !dbg !55
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self) #0 !dbg !57 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self) #0 !dbg !57 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self), !dbg !59
// CHECK:STDOUT: ret void, !dbg !59
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self) #0 !dbg !61 {
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core"(ptr %self) #0 !dbg !61 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core"(ptr %self), !dbg !63
// CHECK:STDOUT: ret void, !dbg !63
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core"(ptr %self) #0 !dbg !65 {
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.9e05708f03266b13:core.Destroy.Core"(ptr %self) #0 !dbg !65 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core"(ptr %self), !dbg !67
// CHECK:STDOUT: ret void, !dbg !67
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.9e05708f03266b13:core.Destroy.Core"(ptr %self) #0 !dbg !69 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @"_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core"(ptr %self), !dbg !71
// CHECK:STDOUT: ret void, !dbg !71
// 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:
@@ -143,30 +136,26 @@ var c: array(Core.Int(257), 5) = (1, 2, 3, 4, 5);
// CHECK:STDOUT: !46 = !DILocalVariable(arg: 1, scope: !45, type: !20)
// CHECK:STDOUT: !47 = !DILocation(line: 9, column: 3, scope: !45)
// CHECK:STDOUT: !48 = !{!46}
// CHECK:STDOUT: !49 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.f58524831c37807e:core.Destroy.Core", scope: null, file: !18, line: 9, type: !27, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !52)
// CHECK:STDOUT: !49 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.f58524831c37807e:core.Destroy.Core", scope: null, file: !18, line: 9, type: !27, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !52)
// CHECK:STDOUT: !50 = !DILocalVariable(arg: 1, scope: !49, type: !20)
// CHECK:STDOUT: !51 = !DILocation(line: 9, column: 3, scope: !49)
// CHECK:STDOUT: !52 = !{!50}
// CHECK:STDOUT: !53 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.f58524831c37807e:core.Destroy.Core", scope: null, file: !18, line: 9, type: !27, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !56)
// CHECK:STDOUT: !54 = !DILocalVariable(arg: 1, scope: !53, type: !20)
// CHECK:STDOUT: !53 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !56)
// CHECK:STDOUT: !54 = !DILocalVariable(arg: 1, scope: !53, type: !21)
// CHECK:STDOUT: !55 = !DILocation(line: 9, column: 3, scope: !53)
// CHECK:STDOUT: !56 = !{!54}
// CHECK:STDOUT: !57 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.0bcbe81284b6bcb5:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !60)
// CHECK:STDOUT: !57 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.0bcbe81284b6bcb5:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !60)
// CHECK:STDOUT: !58 = !DILocalVariable(arg: 1, scope: !57, type: !21)
// CHECK:STDOUT: !59 = !DILocation(line: 9, column: 3, scope: !57)
// CHECK:STDOUT: !60 = !{!58}
// CHECK:STDOUT: !61 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.0bcbe81284b6bcb5:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !64)
// CHECK:STDOUT: !61 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !64)
// CHECK:STDOUT: !62 = !DILocalVariable(arg: 1, scope: !61, type: !21)
// CHECK:STDOUT: !63 = !DILocation(line: 9, column: 3, scope: !61)
// CHECK:STDOUT: !64 = !{!62}
// CHECK:STDOUT: !65 = distinct !DISubprogram(name: "SubobjectDestroy", linkageName: "_CSubobjectDestroy.9e05708f03266b13:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !68)
// CHECK:STDOUT: !65 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.9e05708f03266b13:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !68)
// CHECK:STDOUT: !66 = !DILocalVariable(arg: 1, scope: !65, type: !21)
// CHECK:STDOUT: !67 = !DILocation(line: 9, column: 3, scope: !65)
// CHECK:STDOUT: !68 = !{!66}
// CHECK:STDOUT: !69 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.9e05708f03266b13:core.Destroy.Core", scope: null, file: !18, line: 9, type: !23, spFlags: DISPFlagDefinition, unit: !19, retainedNodes: !72)
// CHECK:STDOUT: !70 = !DILocalVariable(arg: 1, scope: !69, type: !21)
// CHECK:STDOUT: !71 = !DILocation(line: 9, column: 3, scope: !69)
// CHECK:STDOUT: !72 = !{!70}
// CHECK:STDOUT:
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'constant_with_padding.carbon'
@@ -177,10 +166,10 @@ var c: array(Core.Int(257), 5) = (1, 2, 3, 4, 5);
// CHECK:STDOUT: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @_C__global_init.Main, ptr null }]
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !76 {
// CHECK:STDOUT: define internal void @_C__global_init.Main() #0 !dbg !72 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 32 @_Cc.Main, ptr align 32 @array.loc3_1, i64 320, i1 false), !dbg !78
// CHECK:STDOUT: ret void, !dbg !79
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 32 @_Cc.Main, ptr align 32 @array.loc3_1, i64 320, i1 false), !dbg !74
// CHECK:STDOUT: ret void, !dbg !75
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
@@ -189,16 +178,16 @@ var c: array(Core.Int(257), 5) = (1, 2, 3, 4, 5);
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!74}
// CHECK:STDOUT: !llvm.dbg.cu = !{!70}
// 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: !24 = !{null}
// CHECK:STDOUT: !25 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !73 = !DIFile(filename: "constant_with_padding.carbon", directory: "")
// CHECK:STDOUT: !74 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !73, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !76 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !73, type: !25, spFlags: DISPFlagDefinition, unit: !74)
// CHECK:STDOUT: !78 = !DILocation(line: 3, column: 1, scope: !76)
// CHECK:STDOUT: !79 = !DILocation(line: 0, scope: !76)
// CHECK:STDOUT: !69 = !DIFile(filename: "constant_with_padding.carbon", directory: "")
// CHECK:STDOUT: !70 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !69, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !72 = distinct !DISubprogram(name: "__global_init", linkageName: "_C__global_init.Main", scope: null, file: !69, type: !25, spFlags: DISPFlagDefinition, unit: !70)
// CHECK:STDOUT: !74 = !DILocation(line: 3, column: 1, scope: !72)
// CHECK:STDOUT: !75 = !DILocation(line: 0, scope: !72)
// CHECK:STDOUT: