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2d3897cf6c
Compiler emitted synthetic types may not have an associated DIFile (translation unit). In such a case, when generating CodeView debug type information, we would attempt to compute an absolute filepath which would result in a segfault due to a NULL DIFile*. If there is no source file associated with the type, elide the type index entry for the type and record the type information. This actually results in higher fidelity debug information than clang/C2 as of this writing. Resolves PR32668! llvm-svn: 302085
56 lines
2.8 KiB
LLVM
56 lines
2.8 KiB
LLVM
; RUN: llc -mtriple x86_64-unknown-windows-msvc -filetype asm -o - %s | FileCheck %s
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-windows-msvc"
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define dllexport void ()* @f() !dbg !6 {
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entry:
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ret void ()* null, !dbg !28
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm", checksumkind: CSK_MD5, checksum: "2851eea4f12e754f1a68c47a7045406a")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9}
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
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!10 = !DICompositeType(tag: DW_TAG_structure_type, scope: !1, size: 256, flags: DIFlagAppleBlock, elements: !11)
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!11 = !{!12, !14, !16, !17, !21}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "__isa", scope: !1, file: !1, baseType: !13, size: 64)
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
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!14 = !DIDerivedType(tag: DW_TAG_member, name: "__flags", scope: !1, file: !1, baseType: !15, size: 32, offset: 64)
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!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "__reserved", scope: !1, file: !1, baseType: !15, size: 32, offset: 96)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "__FuncPtr", scope: !1, file: !1, baseType: !18, size: 64, offset: 128)
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!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
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!19 = !DISubroutineType(types: !20)
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!20 = !{null}
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!21 = !DIDerivedType(tag: DW_TAG_member, name: "__descriptor", scope: !1, baseType: !22, size: 64, align: 64, offset: 192)
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!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
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!23 = !DICompositeType(tag: DW_TAG_structure_type, name: "__block_descriptor", scope: !1, size: 64, flags: DIFlagAppleBlock, elements: !24)
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!24 = !{!25, !27}
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!25 = !DIDerivedType(tag: DW_TAG_member, name: "reserved", scope: !1, file: !1, baseType: !26, size: 32)
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!26 = !DIBasicType(name: "long unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!27 = !DIDerivedType(tag: DW_TAG_member, name: "Size", scope: !1, file: !1, baseType: !26, size: 32, offset: 32)
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!28 = !DILocation(line: 1, scope: !6)
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; CHECK: # Struct
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; CHECK: # TypeLeafKind: LF_STRUCTURE
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; CHECK: # MemberCount: 0
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; CHECK: # Properties [
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; CHECK: # ForwardReference
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; CHECK: # ]
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; CHECK: # FieldList: 0x0
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; CHECK: # DerivedFrom: 0x0
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; CHECK: # VShape: 0x0
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; CHECK: # SizeOf: 0
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; CHECK: # Name: __block_descriptor
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; CHECK: # }
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