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1; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s2;3; This test verifies global variables are emitted within the correct scope.4;5; -- global_visibility.cpp ----------------------------------------------------6; int global_int = 0;7; 8; template <typename T> struct A {9; static T comdat_int;10; static T set(T value) {11; T r = comdat_int;12; comdat_int = value;13; return r;14; };15; };16; 17; template <typename T> T A<T>::comdat_int = 42;18; 19; void foo() {20; static int local_int = 1;21; {22; static int nested_int = 2;23; local_int = nested_int;24; }25; local_int = A<int>::set(42);26; }27; 28; void bar() {29; static int local_int = 3;30; {31; static int nested_int = 4;32; local_int = nested_int;33; }34; local_int = A<unsigned>::set(42);35; }36; -----------------------------------------------------------------------------37;38; $ clang -S -emit-llvm -g -gcodeview global_visibility.cpp39;40; NOTE: The scope for both DIGlobalVariable's named "nested_int" should refer41; to the appropriate DILexicalBlock, not a DISubprogram.42;43 44; CHECK: CodeViewDebugInfo [45; CHECK: Section: .debug$S (9)46 47; CHECK: Subsection [48; CHECK: SubSectionType: Symbols (0xF1)49; CHECK: GlobalProcIdSym {50; CHECK: Kind: S_GPROC32_ID (0x1147)51; CHECK: DisplayName: foo52; CHECK: LinkageName: ?foo@@YAXXZ53; CHECK: }54; CHECK: DataSym {55; CHECK: Kind: S_LDATA32 (0x110C)56; CHECK: DisplayName: local_int57; CHECK: LinkageName: ?local_int@?1??foo@@YAXXZ@4HA58; CHECK: }59; CHECK: DataSym {60; CHECK: Kind: S_LDATA32 (0x110C)61; CHECK: DisplayName: nested_int62; CHECK: LinkageName: ?nested_int@?1??foo@@YAXXZ@4HA63; CHECK: }64; CHECK: ProcEnd {65; CHECK: Kind: S_PROC_ID_END (0x114F)66; CHECK: }67; CHECK: ]68; CHECK: Subsection [69; CHECK: SubSectionType: Symbols (0xF1)70; CHECK: GlobalProcIdSym {71; CHECK: Kind: S_GPROC32_ID (0x1147)72; CHECK: DisplayName: bar73; CHECK: LinkageName: ?bar@@YAXXZ74; CHECK: }75; CHECK: DataSym {76; CHECK: Kind: S_LDATA32 (0x110C)77; CHECK: DisplayName: local_int78; CHECK: LinkageName: ?local_int@?1??bar@@YAXXZ@4HA79; CHECK: }80; CHECK: DataSym {81; CHECK: Kind: S_LDATA32 (0x110C)82; CHECK: DisplayName: nested_int83; CHECK: LinkageName: ?nested_int@?1??bar@@YAXXZ@4HA84; CHECK: }85; CHECK: ProcEnd {86; CHECK: Kind: S_PROC_ID_END (0x114F)87; CHECK: }88; CHECK: ]89; CHECK: Subsection [90; CHECK: SubSectionType: Symbols (0xF1)91; CHECK: GlobalData {92; CHECK: Kind: S_GDATA32 (0x110D)93; CHECK: DisplayName: global_int94; CHECK: LinkageName: ?global_int@@3HA95; CHECK: }96; CHECK: ]97; CHECK: ]98; CHECK: CodeViewDebugInfo [99; CHECK: Section: .debug$S (16)100; CHECK: Subsection [101; CHECK: SubSectionType: Symbols (0xF1)102; CHECK: GlobalData {103; CHECK: Kind: S_GDATA32 (0x110D)104; CHECK: DisplayName: A<int>::comdat_int105; CHECK: LinkageName: ?comdat_int@?$A@H@@2HA106; CHECK: }107; CHECK: ]108; CHECK: ]109; CHECK: CodeViewDebugInfo [110; CHECK: Section: .debug$S (17)111; CHECK: Subsection [112; CHECK: SubSectionType: Symbols (0xF1)113; CHECK: GlobalData {114; CHECK: Kind: S_GDATA32 (0x110D)115; CHECK: DisplayName: A<unsigned int>::comdat_int116; CHECK: LinkageName: ?comdat_int@?$A@I@@2IA117; CHECK: }118; CHECK: ]119; CHECK: ]120;121 122; ModuleID = 'a.cpp'123source_filename = "a.cpp"124target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"125target triple = "x86_64-pc-windows-msvc19.25.28614"126 127$"?set@?$A@H@@SAHH@Z" = comdat any128 129$"?set@?$A@I@@SAII@Z" = comdat any130 131$"?comdat_int@?$A@H@@2HA" = comdat any132 133$"?comdat_int@?$A@I@@2IA" = comdat any134 135@"?global_int@@3HA" = dso_local global i32 0, align 4, !dbg !0136@"?local_int@?1??foo@@YAXXZ@4HA" = internal global i32 1, align 4, !dbg !6137@"?nested_int@?1??foo@@YAXXZ@4HA" = internal global i32 2, align 4, !dbg !12138@"?local_int@?1??bar@@YAXXZ@4HA" = internal global i32 3, align 4, !dbg !14139@"?nested_int@?1??bar@@YAXXZ@4HA" = internal global i32 4, align 4, !dbg !17140@"?comdat_int@?$A@H@@2HA" = linkonce_odr dso_local global i32 42, comdat, align 4, !dbg !19141@"?comdat_int@?$A@I@@2IA" = linkonce_odr dso_local global i32 42, comdat, align 4, !dbg !29142 143; Function Attrs: noinline optnone uwtable144define dso_local void @"?foo@@YAXXZ"() #0 !dbg !8 {145entry:146 %0 = load i32, ptr @"?nested_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !45147 store i32 %0, ptr @"?local_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !45148 %call = call i32 @"?set@?$A@H@@SAHH@Z"(i32 42), !dbg !47149 store i32 %call, ptr @"?local_int@?1??foo@@YAXXZ@4HA", align 4, !dbg !47150 ret void, !dbg !48151}152 153; Function Attrs: noinline nounwind optnone uwtable154define linkonce_odr dso_local i32 @"?set@?$A@H@@SAHH@Z"(i32 %value) #1 comdat align 2 !dbg !49 {155entry:156 %value.addr = alloca i32, align 4157 %r = alloca i32, align 4158 store i32 %value, ptr %value.addr, align 4159 call void @llvm.dbg.declare(metadata ptr %value.addr, metadata !50, metadata !DIExpression()), !dbg !51160 call void @llvm.dbg.declare(metadata ptr %r, metadata !52, metadata !DIExpression()), !dbg !53161 %0 = load i32, ptr @"?comdat_int@?$A@H@@2HA", align 4, !dbg !53162 store i32 %0, ptr %r, align 4, !dbg !53163 %1 = load i32, ptr %value.addr, align 4, !dbg !54164 store i32 %1, ptr @"?comdat_int@?$A@H@@2HA", align 4, !dbg !54165 %2 = load i32, ptr %r, align 4, !dbg !55166 ret i32 %2, !dbg !55167}168 169; Function Attrs: noinline optnone uwtable170define dso_local void @"?bar@@YAXXZ"() #0 !dbg !16 {171entry:172 %0 = load i32, ptr @"?nested_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !56173 store i32 %0, ptr @"?local_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !56174 %call = call i32 @"?set@?$A@I@@SAII@Z"(i32 42), !dbg !58175 store i32 %call, ptr @"?local_int@?1??bar@@YAXXZ@4HA", align 4, !dbg !58176 ret void, !dbg !59177}178 179; Function Attrs: noinline nounwind optnone uwtable180define linkonce_odr dso_local i32 @"?set@?$A@I@@SAII@Z"(i32 %value) #1 comdat align 2 !dbg !60 {181entry:182 %value.addr = alloca i32, align 4183 %r = alloca i32, align 4184 store i32 %value, ptr %value.addr, align 4185 call void @llvm.dbg.declare(metadata ptr %value.addr, metadata !61, metadata !DIExpression()), !dbg !62186 call void @llvm.dbg.declare(metadata ptr %r, metadata !63, metadata !DIExpression()), !dbg !64187 %0 = load i32, ptr @"?comdat_int@?$A@I@@2IA", align 4, !dbg !64188 store i32 %0, ptr %r, align 4, !dbg !64189 %1 = load i32, ptr %value.addr, align 4, !dbg !65190 store i32 %1, ptr @"?comdat_int@?$A@I@@2IA", align 4, !dbg !65191 %2 = load i32, ptr %r, align 4, !dbg !66192 ret i32 %2, !dbg !66193}194 195; Function Attrs: nounwind readnone speculatable willreturn196declare void @llvm.dbg.declare(metadata, metadata, metadata) #2197 198attributes #0 = { noinline optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "use-soft-float"="false" }199attributes #1 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "use-soft-float"="false" }200attributes #2 = { nounwind readnone speculatable willreturn }201 202!llvm.dbg.cu = !{!2}203!llvm.module.flags = !{!40, !41, !42, !43}204!llvm.ident = !{!44}205 206!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())207!1 = distinct !DIGlobalVariable(name: "global_int", linkageName: "?global_int@@3HA", scope: !2, file: !3, line: 1, type: !11, isLocal: false, isDefinition: true)208!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 11.0.0 (https://github.com/llvm/llvm-project.git 202f144bffd0be254a829924195e1b8ebabcbb79)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)209!3 = !DIFile(filename: "a.cpp", directory: "F:\\llvm-project\\__test", checksumkind: CSK_MD5, checksum: "66a5399777dc9d37656fb00438bca542")210!4 = !{}211!5 = !{!0, !6, !12, !14, !17, !19, !29}212!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())213!7 = distinct !DIGlobalVariable(name: "local_int", scope: !8, file: !3, line: 15, type: !11, isLocal: true, isDefinition: true)214!8 = distinct !DISubprogram(name: "foo", linkageName: "?foo@@YAXXZ", scope: !3, file: !3, line: 14, type: !9, scopeLine: 14, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)215!9 = !DISubroutineType(types: !10)216!10 = !{null}217!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)218!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())219!13 = distinct !DIGlobalVariable(name: "nested_int", scope: !8, file: !3, line: 17, type: !11, isLocal: true, isDefinition: true)220!14 = !DIGlobalVariableExpression(var: !15, expr: !DIExpression())221!15 = distinct !DIGlobalVariable(name: "local_int", scope: !16, file: !3, line: 24, type: !11, isLocal: true, isDefinition: true)222!16 = distinct !DISubprogram(name: "bar", linkageName: "?bar@@YAXXZ", scope: !3, file: !3, line: 23, type: !9, scopeLine: 23, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !4)223!17 = !DIGlobalVariableExpression(var: !18, expr: !DIExpression())224!18 = distinct !DIGlobalVariable(name: "nested_int", scope: !16, file: !3, line: 26, type: !11, isLocal: true, isDefinition: true)225!19 = !DIGlobalVariableExpression(var: !20, expr: !DIExpression())226!20 = distinct !DIGlobalVariable(name: "comdat_int", linkageName: "?comdat_int@?$A@H@@2HA", scope: !2, file: !3, line: 12, type: !11, isLocal: false, isDefinition: true, declaration: !21)227!21 = !DIDerivedType(tag: DW_TAG_member, name: "comdat_int", scope: !22, file: !3, line: 4, baseType: !11, flags: DIFlagStaticMember)228!22 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<int>", file: !3, line: 3, size: 8, flags: DIFlagTypePassByValue, elements: !23, templateParams: !27, identifier: ".?AU?$A@H@@")229!23 = !{!21, !24}230!24 = !DISubprogram(name: "set", linkageName: "?set@?$A@H@@SAHH@Z", scope: !22, file: !3, line: 5, type: !25, scopeLine: 5, flags: DIFlagPrototyped | DIFlagStaticMember, spFlags: 0)231!25 = !DISubroutineType(types: !26)232!26 = !{!11, !11}233!27 = !{!28}234!28 = !DITemplateTypeParameter(name: "T", type: !11)235!29 = !DIGlobalVariableExpression(var: !30, expr: !DIExpression())236!30 = distinct !DIGlobalVariable(name: "comdat_int", linkageName: "?comdat_int@?$A@I@@2IA", scope: !2, file: !3, line: 12, type: !31, isLocal: false, isDefinition: true, declaration: !32)237!31 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)238!32 = !DIDerivedType(tag: DW_TAG_member, name: "comdat_int", scope: !33, file: !3, line: 4, baseType: !31, flags: DIFlagStaticMember)239!33 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A<unsigned int>", file: !3, line: 3, size: 8, flags: DIFlagTypePassByValue, elements: !34, templateParams: !38, identifier: ".?AU?$A@I@@")240!34 = !{!32, !35}241!35 = !DISubprogram(name: "set", linkageName: "?set@?$A@I@@SAII@Z", scope: !33, file: !3, line: 5, type: !36, scopeLine: 5, flags: DIFlagPrototyped | DIFlagStaticMember, spFlags: 0)242!36 = !DISubroutineType(types: !37)243!37 = !{!31, !31}244!38 = !{!39}245!39 = !DITemplateTypeParameter(name: "T", type: !31)246!40 = !{i32 2, !"CodeView", i32 1}247!41 = !{i32 2, !"Debug Info Version", i32 3}248!42 = !{i32 1, !"wchar_size", i32 2}249!43 = !{i32 7, !"PIC Level", i32 2}250!44 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project.git 202f144bffd0be254a829924195e1b8ebabcbb79)"}251!45 = !DILocation(line: 18, scope: !46)252!46 = distinct !DILexicalBlock(scope: !8, file: !3, line: 16)253!47 = !DILocation(line: 20, scope: !8)254!48 = !DILocation(line: 21, scope: !8)255!49 = distinct !DISubprogram(name: "set", linkageName: "?set@?$A@H@@SAHH@Z", scope: !22, file: !3, line: 5, type: !25, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, declaration: !24, retainedNodes: !4)256!50 = !DILocalVariable(name: "value", arg: 1, scope: !49, file: !3, line: 5, type: !11)257!51 = !DILocation(line: 5, scope: !49)258!52 = !DILocalVariable(name: "r", scope: !49, file: !3, line: 6, type: !11)259!53 = !DILocation(line: 6, scope: !49)260!54 = !DILocation(line: 7, scope: !49)261!55 = !DILocation(line: 8, scope: !49)262!56 = !DILocation(line: 27, scope: !57)263!57 = distinct !DILexicalBlock(scope: !16, file: !3, line: 25)264!58 = !DILocation(line: 29, scope: !16)265!59 = !DILocation(line: 30, scope: !16)266!60 = distinct !DISubprogram(name: "set", linkageName: "?set@?$A@I@@SAII@Z", scope: !33, file: !3, line: 5, type: !36, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, declaration: !35, retainedNodes: !4)267!61 = !DILocalVariable(name: "value", arg: 1, scope: !60, file: !3, line: 5, type: !31)268!62 = !DILocation(line: 5, scope: !60)269!63 = !DILocalVariable(name: "r", scope: !60, file: !3, line: 6, type: !31)270!64 = !DILocation(line: 6, scope: !60)271!65 = !DILocation(line: 7, scope: !60)272!66 = !DILocation(line: 8, scope: !60)273