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CodeView - add static data members to global variable debug info.
Summary: Add static data members to IR debug info's list of global variables so that they are emitted as S_CONSTANT records. Related to https://bugs.llvm.org/show_bug.cgi?id=41615. Reviewers: rnk Subscribers: aprantl, cfe-commits, llvm-commits, thakis Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D62167 llvm-svn: 362038
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@ -3069,7 +3069,12 @@ void CodeViewDebug::emitDebugInfoForGlobal(const CVGlobalVariable &CVGV) {
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OS.EmitBinaryData(SRef);
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OS.AddComment("Name");
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emitNullTerminatedSymbolName(OS, DIGV->getDisplayName());
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// Get fully qualified name if global is a static data member.
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std::string Name = DIGV->getDisplayName();
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if (const auto *MemberDecl = dyn_cast_or_null<DIDerivedType>(
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DIGV->getRawStaticDataMemberDeclaration()))
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Name = getFullyQualifiedName(MemberDecl->getScope(), Name);
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emitNullTerminatedSymbolName(OS, Name);
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endSymbolRecord(SConstantEnd);
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}
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}
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@ -3,18 +3,25 @@
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; C++ source to regenerate:
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; const int Test1 = 1;
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; struct Foo { static const int Test2 = 2; };
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; int main() {
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; return Test1;
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; return Test1 + Foo::Test2;
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; }
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; $ clang t.cpp -S -emit-llvm -g -gcodeview -o t.ll
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; ASM-LABEL: .long 241 # Symbol subsection for globals
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; ASM-LABEL: .long 241 # Symbol subsection for globals
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; ASM: .short {{.*-.*}} # Record length
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; ASM: .short 4359 # Record kind: S_CONSTANT
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; ASM-NEXT: .long 4099 # Type
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; ASM-NEXT: .byte 0x01, 0x00 # Value
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; ASM-NEXT: .asciz "Test1" # Name
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; ASM: .short {{.*-.*}} # Record length
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; ASM: .short 4359 # Record kind: S_CONSTANT
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; ASM-NEXT: .long 4099 # Type
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; ASM-NEXT: .byte 0x01, 0x00 # Value
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; ASM-NEXT: .asciz "Test1" # Name
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; ASM: .short {{.*-.*}} # Record length
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; ASM: .short 4359 # Record kind: S_CONSTANT
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; ASM: .long 4099 # Type
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; ASM: .byte 0x02, 0x00 # Value
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; ASM: .asciz "Foo::Test2" # Name
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; OBJ: CodeViewDebugInfo [
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; OBJ: Section: .debug$S
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@ -27,6 +34,12 @@
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; OBJ-NEXT: Value: 1
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; OBJ-NEXT: Name: Test1
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; OBJ-NEXT: }
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; OBJ: ConstantSym {
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; OBJ-NEXT: Kind: S_CONSTANT (0x1107)
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; OBJ-NEXT: Type: const int (0x1003)
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; OBJ-NEXT: Value: 2
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; OBJ-NEXT: Name: Foo::Test2
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; OBJ-NEXT: }
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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@ -34,31 +47,39 @@ target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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; Function Attrs: noinline norecurse nounwind optnone
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define dso_local i32 @main() #0 !dbg !13 {
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define dso_local i32 @main() #0 !dbg !19 {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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ret i32 1, !dbg !16
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ret i32 3, !dbg !22
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10, !11}
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!llvm.ident = !{!12}
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attributes #0 = { noinline norecurse nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "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-features"="+cx8,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git 4a1902b6739e3087a03c0ac7ab85b640764e9335)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, nameTableKind: None)
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!1 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "0d5ef00bdd80bdb409a3deac9938f20d")
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!15, !16, !17}
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!llvm.ident = !{!18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git 2b66a49044196d8b90d95d7d3b5246ccbe3abc05)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !10, nameTableKind: None)
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!1 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "77cff5e1c7b260440ed03b23c18809c3")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
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!5 = distinct !DIGlobalVariable(name: "Test1", scope: !0, file: !6, line: 1, type: !7, isLocal: true, isDefinition: true)
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!6 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "0d5ef00bdd80bdb409a3deac9938f20d")
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!7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
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!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!9 = !{i32 2, !"CodeView", i32 1}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{i32 1, !"wchar_size", i32 2}
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!12 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 4a1902b6739e3087a03c0ac7ab85b640764e9335)"}
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!13 = distinct !DISubprogram(name: "main", scope: !6, file: !6, line: 3, type: !14, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!14 = !DISubroutineType(types: !15)
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!15 = !{!8}
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!16 = !DILocation(line: 4, scope: !13)
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!4 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !5, line: 3, size: 8, flags: DIFlagTypePassByValue, elements: !6, identifier: ".?AUFoo@@")
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!5 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "77cff5e1c7b260440ed03b23c18809c3")
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!6 = !{!7}
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!7 = !DIDerivedType(tag: DW_TAG_member, name: "Test2", scope: !4, file: !5, line: 4, baseType: !8, flags: DIFlagStaticMember, extraData: i32 2)
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!8 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !9)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !{!11, !13}
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!11 = !DIGlobalVariableExpression(var: !12, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
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!12 = distinct !DIGlobalVariable(name: "Test1", scope: null, file: !5, line: 1, type: !8, isLocal: true, isDefinition: true)
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!13 = !DIGlobalVariableExpression(var: !14, expr: !DIExpression(DW_OP_constu, 2, DW_OP_stack_value))
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!14 = distinct !DIGlobalVariable(name: "Test2", scope: !0, file: !5, line: 4, type: !8, isLocal: true, isDefinition: true, declaration: !7)
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!15 = !{i32 2, !"CodeView", i32 1}
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!16 = !{i32 2, !"Debug Info Version", i32 3}
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!17 = !{i32 1, !"wchar_size", i32 2}
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!18 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 2b66a49044196d8b90d95d7d3b5246ccbe3abc05)"}
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!19 = distinct !DISubprogram(name: "main", scope: !5, file: !5, line: 7, type: !20, scopeLine: 7, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!20 = !DISubroutineType(types: !21)
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!21 = !{!9}
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!22 = !DILocation(line: 8, scope: !19)
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