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a9fbb2813b
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
80 lines
3.4 KiB
LLVM
80 lines
3.4 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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@a = global i64 0, align 8, !dbg !18
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; Function Attrs: nounwind uwtable
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define void @_Z4funcv() #0 !dbg !13 {
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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 !DIExpression()), !dbg !22
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store i32 0, i32* %b, align 4, !dbg !22
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ret void, !dbg !23
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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 = !{!0}
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!llvm.module.flags = !{!19, !24}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !11, globals: !17, imports: !11)
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!1 = !DIFile(filename: "enum.cpp", directory: "/tmp")
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!2 = !{!3, !8}
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!3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "e1", line: 1, size: 64, align: 64, file: !1, elements: !4)
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!4 = !{!5, !6, !7}
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!5 = !DIEnumerator(name: "I", value: 0) ; [ DW_TAG_enumerator ] [I :: 0]
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!6 = !DIEnumerator(name: "J", value: 4294967295) ; [ DW_TAG_enumerator ] [J :: 4294967295]
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!7 = !DIEnumerator(name: "K", value: -1152921504606846976) ; [ DW_TAG_enumerator ] [K :: 17293822569102704640]
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!8 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "e2", line: 2, size: 32, align: 32, file: !1, elements: !9)
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!9 = !{!10}
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!10 = !DIEnumerator(name: "X", value: 0) ; [ DW_TAG_enumerator ] [X :: 0]
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!11 = !{}
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!13 = distinct !DISubprogram(name: "func", linkageName: "_Z4funcv", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !14, type: !15, variables: !11)
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!14 = !DIFile(filename: "enum.cpp", directory: "/tmp")
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!15 = !DISubroutineType(types: !16)
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!16 = !{null}
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!17 = !{!18}
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!18 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !3)
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!19 = !{i32 2, !"Dwarf Version", i32 3}
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!20 = !DILocalVariable(name: "b", line: 4, scope: !13, file: !14, type: !21)
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!21 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!22 = !DILocation(line: 4, scope: !13)
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!23 = !DILocation(line: 5, scope: !13)
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!24 = !{i32 1, !"Debug Info Version", i32 3}
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