62 lines
2.8 KiB
LLVM
62 lines
2.8 KiB
LLVM
; RUN: llc -filetype=obj -O0 -generate-type-units -mtriple=x86_64-unknown-linux-gnu < %s \
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; RUN: | llvm-dwarfdump -debug-info -debug-types - | FileCheck %s
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; Test that a type unit referencing a non-type unit (in this case, it's
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; bordering on an ODR violation - a type with linkage references a type without
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; linkage, so there's no way for the first type to be defined in more than one
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; translation unit, so there's no need for it to be in a type unit - but this
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; is quirky/rare and an easy way to test a broader issue). The type unit should
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; not end up with a whole definition of the referenced type - instead it should
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; have a declaration of the type, while the definition remains in the primary
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; CU.
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; (again, arguably in this instance - since the type is only referenced once, it
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; could go in the TU only - but that requires tracking usage & then deciding
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; where to put types, which isn't worthwhile right now)
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; CHECK: Type Unit:
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name {{.*}}"bar"
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; CHECK: DW_TAG_namespace
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; CHECK-NOT: {{DW_AT_name|DW_TAG}}
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NEXT: DW_AT_name {{.*}}"foo"
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; CHECK: Compile Unit:
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NEXT: DW_AT_signature
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; CHECK: DW_TAG_namespace
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; CHECK-NOT: {{DW_AT_name|DW_TAG}}
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name {{.*}}"foo"
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; CHECK-NEXT: DW_AT_byte_size
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%struct.bar = type { %"struct.(anonymous namespace)::foo" }
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%"struct.(anonymous namespace)::foo" = type { i8 }
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@b = global %struct.bar zeroinitializer, align 1, !dbg !0
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!11, !13}
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!llvm.ident = !{!12}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 (trunk 294954) (llvm/trunk 294959)", isOptimized: false, runtimeVersion: 0, splitDebugFilename: "tu-to-non-tu.dwo", emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "tu.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
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!4 = !{}
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!5 = !{!0}
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!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "bar", file: !3, line: 5, size: 8, elements: !7, identifier: "_ZTS3bar")
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!7 = !{!8}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "f", scope: !6, file: !3, line: 6, baseType: !9, size: 8)
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!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo", scope: !10, file: !3, line: 2, size: 8, elements: !4)
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!10 = !DINamespace(scope: null)
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!12 = !{!"clang version 5.0.0 (trunk 294954) (llvm/trunk 294959)"}
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!13 = !{i32 2, !"Dwarf Version", i32 5}
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