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9812acd0fd
This implements the DWARF 5 feature described in: http://dwarfstd.org/ShowIssue.php?issue=141212.1 To support recognizing anonymous structs: struct A { struct { // Anonymous struct int y; }; } a; This patch adds a new (DI)flag to LLVM metadata: ExportSymbols Differential Revision: https://reviews.llvm.org/D66352 llvm-svn: 369781
39 lines
1.7 KiB
LLVM
39 lines
1.7 KiB
LLVM
; Round trip for the following:
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; ```
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; struct A {
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; struct {
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; int y;
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; };
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; } a;
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; ```
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; This is the minimum code to generate export symbols flag due to anonymous class in A.
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; RUN: llvm-as %s -o - | llvm-dis | llvm-as | llvm-dis | FileCheck %s
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%struct.A = type { %struct.anon }
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%struct.anon = type { i32 }
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@a = global %struct.A zeroinitializer, align 4, !dbg !0
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!llvm.module.flags = !{!14, !15}
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!llvm.dbg.cu = !{!2}
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!llvm.ident = !{!16}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 10.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: GNU)
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!3 = !DIFile(filename: "simple_anon_class.cpp", directory: "/dir")
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!4 = !{}
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!5 = !{!0}
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!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !3, line: 1, size: 32, flags: DIFlagTypePassByValue, elements: !7, identifier: "_ZTS1A")
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!7 = !{!8}
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!8 = !DIDerivedType(tag: DW_TAG_member, scope: !6, file: !3, line: 2, baseType: !9, size: 32)
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!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, scope: !6, file: !3, line: 2, size: 32, flags: DIFlagExportSymbols | DIFlagTypePassByValue, elements: !10, identifier: "_ZTSN1AUt_E")
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; CHECK: DIFlagExportSymbols | DIFlagTypePassByValue
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!10 = !{!11}
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!11 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !9, file: !3, line: 3, baseType: !12, size: 32)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!14 = !{i32 2, !"Dwarf Version", i32 4}
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!15 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !{!"clang version 10.0.0"}
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