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69e607f200
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%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312144 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
3.5 KiB
LLVM
84 lines
3.5 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; IR generated from the following code compiled with clang -g:
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; enum e1 { I, J = 0xffffffffU, K = 0xf000000000000000ULL } a;
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; enum e2 { X };
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; void func() {
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; int b = X;
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; }
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; These values were previously being truncated to -1 and 0 respectively.
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; CHECK: debug_info contents
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; CHECK: DW_TAG_enumeration_type
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; CHECK-NEXT: DW_AT_name{{.*}} = "e1"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "J"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata] (4294967295)
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "K"
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; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata] (-1152921504606846976)
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; Check that we retain enums that aren't referenced by any variables, etc
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; CHECK: DW_TAG_enumeration_type
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; CHECK-NEXT: DW_AT_name{{.*}} = "e2"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_enumerator
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; CHECK-NEXT: DW_AT_name{{.*}} = "X"
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source_filename = "test/DebugInfo/Generic/enum.ll"
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@a = global i64 0, align 8, !dbg !0
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; Function Attrs: nounwind uwtable
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define void @_Z4funcv() #0 !dbg !17 {
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entry:
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%b = alloca i32, align 4
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call void @llvm.dbg.declare(metadata i32* %b, metadata !20, metadata !22), !dbg !23
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store i32 0, i32* %b, align 4, !dbg !23
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ret void, !dbg !24
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!8}
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!llvm.module.flags = !{!15, !16}
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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: "enum.cpp", directory: "/tmp")
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!3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "e1", file: !2, line: 1, size: 64, align: 64, elements: !4)
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!4 = !{!5, !6, !7}
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!5 = !DIEnumerator(name: "I", value: 0)
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!6 = !DIEnumerator(name: "J", value: 4294967295) ; [ DW_TAG_enumerator ] [I :: 0]
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!7 = !DIEnumerator(name: "K", value: -1152921504606846976) ; [ DW_TAG_enumerator ] [J :: 4294967295]
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!8 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !9, retainedTypes: !13, globals: !14, imports: !13) ; [ DW_TAG_enumerator ] [K :: 17293822569102704640]
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!9 = !{!3, !10}
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!10 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "e2", file: !2, line: 2, size: 32, align: 32, elements: !11)
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!11 = !{!12}
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!12 = !DIEnumerator(name: "X", value: 0) ; [ DW_TAG_enumerator ] [X :: 0]
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!13 = !{}
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!14 = !{!0}
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!15 = !{i32 2, !"Dwarf Version", i32 3}
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!16 = !{i32 1, !"Debug Info Version", i32 3}
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!17 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcv", scope: !2, file: !2, line: 3, type: !18, isLocal: false, isDefinition: true, scopeLine: 3, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !8, variables: !13)
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!18 = !DISubroutineType(types: !19)
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!19 = !{null}
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!20 = !DILocalVariable(name: "b", scope: !17, file: !2, line: 4, type: !21)
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!21 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!22 = !DIExpression()
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!23 = !DILocation(line: 4, scope: !17)
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!24 = !DILocation(line: 5, scope: !17)
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