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7d6813a6c8
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
54 lines
2.6 KiB
LLVM
54 lines
2.6 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin -O0 -filetype=obj -dwarf-version 4 \
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; RUN: -o - < %s | llvm-dwarfdump - -debug-dump=info \
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; RUN: | FileCheck %s -check-prefixes=CHECK,DWARF4
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; RUN: llc -mtriple=x86_64-apple-darwin -O0 -filetype=obj -dwarf-version 5 \
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; RUN: -o - < %s | llvm-dwarfdump - -debug-dump=info \
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; RUN: | FileCheck %s -check-prefixes=CHECK,DWARF5
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; Check that we can omit default array lower-bounds.
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; DW_LANG_C_plus_plus_11 is new in DWARF v5, so if we use that with
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; DWARF v4, we should get the DW_AT_lower_bound attribute.
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source_filename = "test/DebugInfo/X86/default-subrange-array.ll"
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%class.A = type { [42 x i32] }
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@a = global %class.A zeroinitializer, align 4, !dbg !0
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; CHECK: DW_TAG_class_type
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; CHECK: DW_TAG_member
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; CHECK-NEXT: DW_AT_name {{.*}} "x"
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] {{.*}} => {[[ARRAY:0x[0-9a-f]+]]})
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; CHECK: [[ARRAY]]: DW_TAG_array_type
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; CHECK-NEXT: DW_AT_type
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; CHECK: DW_TAG_subrange_type
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; CHECK-NEXT: DW_AT_type
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; DWARF4-NEXT: DW_AT_lower_bound [DW_FORM_data1] (0x00)
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; CHECK-NEXT: DW_AT_count [DW_FORM_data1] (0x2a)
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; DWARF5-NOT: DW_AT_lower_bound
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!llvm.dbg.cu = !{!14}
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!llvm.module.flags = !{!17}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "a", scope: null, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true)
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!2 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
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!3 = !DICompositeType(tag: DW_TAG_class_type, name: "A", file: !2, line: 1, align: 32, elements: !4)
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!4 = !{!5, !10}
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!5 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !3, file: !2, line: 1, baseType: !6, flags: DIFlagPrivate)
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!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, align: 32, elements: !8)
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{!9}
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!9 = !DISubrange(count: 42, lowerBound: 0)
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!10 = !DISubprogram(name: "A", scope: !3, file: !2, line: 1, type: !11, isLocal: false, isDefinition: false, scopeLine: 1, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!14 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_11, file: !2, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !15, retainedTypes: !15, globals: !16, imports: !15)
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!15 = !{}
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!16 = !{!0}
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!17 = !{i32 1, !"Debug Info Version", i32 3}
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