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llvm-mirror/test/DebugInfo/X86/pr12831.ll
Shiva Chen a2029fa58e [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 
In order to set breakpoints on labels and list source code around
labels, we need collect debug information for labels, i.e., label
name, the function label belong, line number in the file, and the
address label located. In order to keep these information in LLVM
IR and to allow backend to generate debug information correctly.
We create a new kind of metadata for labels, DILabel. The format
of DILabel is

!DILabel(scope: !1, name: "foo", file: !2, line: 3)

We hope to keep debug information as much as possible even the
code is optimized. So, we create a new kind of intrinsic for label
metadata to avoid the metadata is eliminated with basic block.
The intrinsic will keep existing if we keep it from optimized out.
The format of the intrinsic is

llvm.dbg.label(metadata !1)

It has only one argument, that is the DILabel metadata. The
intrinsic will follow the label immediately. Backend could get the
label metadata through the intrinsic's parameter.

We also create DIBuilder API for labels to be used by Frontend.
Frontend could use createLabel() to allocate DILabel objects, and use
insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR.

Differential Revision: https://reviews.llvm.org/D45024

Patch by Hsiangkai Wang.

llvm-svn: 331841
2018-05-09 02:40:45 +00:00

211 lines
17 KiB
LLVM
Raw Blame History

; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu -o /dev/null
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%class.function = type { i8 }
%class.BPLFunctionWriter = type { %struct.BPLModuleWriter* }
%struct.BPLModuleWriter = type { i8 }
%class.anon = type { i8 }
%class.anon.0 = type { i8 }
@"_ZN8functionIFvvEEC1IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_" = internal alias void (%class.function*), void (%class.function*)* @"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_"
@"_ZN8functionIFvvEEC1IZN17BPLFunctionWriter9writeExprEvE3$_0EET_" = internal alias void (%class.function*), void (%class.function*)* @"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_0EET_"
define void @_ZN17BPLFunctionWriter9writeExprEv(%class.BPLFunctionWriter* %this) nounwind uwtable align 2 !dbg !5 {
entry:
%this.addr = alloca %class.BPLFunctionWriter*, align 8
%agg.tmp = alloca %class.function, align 1
%agg.tmp2 = alloca %class.anon, align 1
%agg.tmp4 = alloca %class.function, align 1
%agg.tmp5 = alloca %class.anon.0, align 1
store %class.BPLFunctionWriter* %this, %class.BPLFunctionWriter** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.BPLFunctionWriter** %this.addr, metadata !133, metadata !DIExpression()), !dbg !135
%this1 = load %class.BPLFunctionWriter*, %class.BPLFunctionWriter** %this.addr
%MW = getelementptr inbounds %class.BPLFunctionWriter, %class.BPLFunctionWriter* %this1, i32 0, i32 0, !dbg !136
%0 = load %struct.BPLModuleWriter*, %struct.BPLModuleWriter** %MW, align 8, !dbg !136
call void @"_ZN8functionIFvvEEC1IZN17BPLFunctionWriter9writeExprEvE3$_0EET_"(%class.function* %agg.tmp), !dbg !136
call void @_ZN15BPLModuleWriter14writeIntrinsicE8functionIFvvEE(%struct.BPLModuleWriter* %0), !dbg !136
%MW3 = getelementptr inbounds %class.BPLFunctionWriter, %class.BPLFunctionWriter* %this1, i32 0, i32 0, !dbg !138
%1 = load %struct.BPLModuleWriter*, %struct.BPLModuleWriter** %MW3, align 8, !dbg !138
call void @"_ZN8functionIFvvEEC1IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_"(%class.function* %agg.tmp4), !dbg !138
call void @_ZN15BPLModuleWriter14writeIntrinsicE8functionIFvvEE(%struct.BPLModuleWriter* %1), !dbg !138
ret void, !dbg !139
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
declare void @_ZN15BPLModuleWriter14writeIntrinsicE8functionIFvvEE(%struct.BPLModuleWriter*)
define internal void @"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_"(%class.function* %this) unnamed_addr nounwind uwtable align 2 {
entry:
%this.addr = alloca %class.function*, align 8
%__f = alloca %class.anon.0, align 1
store %class.function* %this, %class.function** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.function** %this.addr, metadata !140, metadata !DIExpression()), !dbg !142
call void @llvm.dbg.declare(metadata %class.anon.0* %__f, metadata !143, metadata !DIExpression()), !dbg !144
%this1 = load %class.function*, %class.function** %this.addr
call void @"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_"(%class.anon.0* %__f), !dbg !145
ret void, !dbg !147
}
define internal void @"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_"(%class.anon.0*) nounwind uwtable align 2 {
entry:
%.addr = alloca %class.anon.0*, align 8
store %class.anon.0* %0, %class.anon.0** %.addr, align 8
ret void, !dbg !148
}
define internal void @"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_0EET_"(%class.function* %this) unnamed_addr nounwind uwtable align 2 {
entry:
%this.addr = alloca %class.function*, align 8
%__f = alloca %class.anon, align 1
store %class.function* %this, %class.function** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.function** %this.addr, metadata !150, metadata !DIExpression()), !dbg !151
call void @llvm.dbg.declare(metadata %class.anon* %__f, metadata !152, metadata !DIExpression()), !dbg !153
%this1 = load %class.function*, %class.function** %this.addr
call void @"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_"(%class.anon* %__f), !dbg !154
ret void, !dbg !156
}
define internal void @"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_"(%class.anon*) nounwind uwtable align 2 {
entry:
%.addr = alloca %class.anon*, align 8
store %class.anon* %0, %class.anon** %.addr, align 8
ret void, !dbg !157
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!162}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 ", isOptimized: false, emissionKind: FullDebug, file: !161, enums: !1, retainedTypes: !1, globals: !128)
!1 = !{}
!5 = distinct !DISubprogram(name: "writeExpr", linkageName: "_ZN17BPLFunctionWriter9writeExprEv", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 19, file: !6, scope: null, type: !7, declaration: !103, retainedNodes: !1)
!6 = !DIFile(filename: "BPLFunctionWriter2.ii", directory: "/home/peter/crashdelta")
!7 = !DISubroutineType(types: !8)
!8 = !{null, !9}
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !10)
!10 = !DICompositeType(tag: DW_TAG_class_type, name: "BPLFunctionWriter", line: 15, size: 64, align: 64, file: !160, elements: !11)
!11 = !{!12, !103}
!12 = !DIDerivedType(tag: DW_TAG_member, name: "MW", line: 16, size: 64, align: 64, flags: DIFlagPrivate, file: !160, scope: !10, baseType: !13)
!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14)
!14 = !DICompositeType(tag: DW_TAG_class_type, name: "BPLModuleWriter", line: 12, size: 8, align: 8, file: !160, elements: !15)
!15 = !{!16}
!16 = !DISubprogram(name: "writeIntrinsic", linkageName: "_ZN15BPLModuleWriter14writeIntrinsicE8functionIFvvEE", line: 13, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 13, file: !6, scope: !14, type: !17)
!17 = !DISubroutineType(types: !18)
!18 = !{null, !19, !20}
!19 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !14)
!20 = !DICompositeType(tag: DW_TAG_class_type, name: "function<void ()>", line: 6, size: 8, align: 8, file: !160, elements: !21, templateParams: !97)
!21 = !{!22, !51, !58, !86, !92}
!22 = !DISubprogram(name: "function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", line: 8, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !6, scope: !20, type: !23, templateParams: !47)
!23 = !DISubroutineType(types: !24)
!24 = !{null, !25, !26}
!25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !20)
!26 = !DICompositeType(tag: DW_TAG_class_type, line: 20, size: 8, align: 8, file: !160, scope: !5, elements: !27)
!27 = !{!28, !35, !41}
!28 = !DISubprogram(name: "operator()", line: 20, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 20, file: !6, scope: !26, type: !29)
!29 = !DISubroutineType(types: !30)
!30 = !{null, !31}
!31 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !32)
!32 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !26)
!35 = !DISubprogram(name: "~", line: 20, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 20, file: !6, scope: !26, type: !36)
!36 = !DISubroutineType(types: !37)
!37 = !{null, !38}
!38 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !26)
!41 = !DISubprogram(name: "", line: 20, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 20, file: !6, scope: !26, type: !42)
!42 = !DISubroutineType(types: !43)
!43 = !{null, !38, !44}
!44 = !DIDerivedType(tag: DW_TAG_rvalue_reference_type, baseType: !26)
!47 = !{!48}
!48 = !DITemplateTypeParameter(name: "_Functor", type: !26)
!51 = !DISubprogram(name: "function<function<void ()> >", line: 8, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !6, scope: !20, type: !52, templateParams: !54)
!52 = !DISubroutineType(types: !53)
!53 = !{null, !25, !20}
!54 = !{!55}
!55 = !DITemplateTypeParameter(name: "_Functor", type: !20)
!58 = !DISubprogram(name: "function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", line: 8, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !6, scope: !20, type: !59, templateParams: !82)
!59 = !DISubroutineType(types: !60)
!60 = !{null, !25, !61}
!61 = !DICompositeType(tag: DW_TAG_class_type, line: 23, size: 8, align: 8, file: !160, scope: !5, elements: !62)
!62 = !{!63, !70, !76}
!63 = !DISubprogram(name: "operator()", line: 23, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 23, file: !6, scope: !61, type: !64)
!64 = !DISubroutineType(types: !65)
!65 = !{null, !66}
!66 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !67)
!67 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !61)
!70 = !DISubprogram(name: "~", line: 23, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 23, file: !6, scope: !61, type: !71)
!71 = !DISubroutineType(types: !72)
!72 = !{null, !73}
!73 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !61)
!76 = !DISubprogram(name: "", line: 23, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 23, file: !6, scope: !61, type: !77)
!77 = !DISubroutineType(types: !78)
!78 = !{null, !73, !79}
!79 = !DIDerivedType(tag: DW_TAG_rvalue_reference_type, baseType: !61)
!82 = !{!83}
!83 = !DITemplateTypeParameter(name: "_Functor", type: !61)
!86 = !DISubprogram(name: "function", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !6, scope: !20, type: !87)
!87 = !DISubroutineType(types: !88)
!88 = !{null, !25, !89}
!89 = !DIDerivedType(tag: DW_TAG_rvalue_reference_type, baseType: !20)
!92 = !DISubprogram(name: "~function", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !6, scope: !20, type: !93)
!93 = !DISubroutineType(types: !94)
!94 = !{null, !25}
!97 = !{!98}
!98 = !DITemplateTypeParameter(name: "T", type: !99)
!99 = !DISubroutineType(types: !100)
!100 = !{null}
!103 = !DISubprogram(name: "writeExpr", linkageName: "_ZN17BPLFunctionWriter9writeExprEv", line: 17, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrivate | DIFlagPrototyped, isOptimized: false, scopeLine: 17, file: !6, scope: !10, type: !7)
!106 = distinct !DISubprogram(name: "function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", linkageName: "_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_", line: 8, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !6, scope: null, type: !59, templateParams: !82, declaration: !58, retainedNodes: !1)
!107 = distinct !DISubprogram(name: "_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", linkageName: "_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !6, scope: null, type: !108, templateParams: !111, declaration: !113, retainedNodes: !1)
!108 = !DISubroutineType(types: !109)
!109 = !{null, !110}
!110 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !61)
!111 = !{!112}
!112 = !DITemplateTypeParameter(name: "_Tp", type: !61)
!113 = !DISubprogram(name: "_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", linkageName: "_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !6, scope: !114, type: !108, templateParams: !111)
!114 = !DICompositeType(tag: DW_TAG_class_type, name: "_Base_manager", line: 1, size: 8, align: 8, file: !160, elements: !115)
!115 = !{!116, !113}
!116 = !DISubprogram(name: "_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", linkageName: "_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !6, scope: !114, type: !117, templateParams: !120)
!117 = !DISubroutineType(types: !118)
!118 = !{null, !119}
!119 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !26)
!120 = !{!121}
!121 = !DITemplateTypeParameter(name: "_Tp", type: !26)
!126 = distinct !DISubprogram(name: "function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", linkageName: "_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_0EET_", line: 8, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !6, scope: null, type: !23, templateParams: !47, declaration: !22, retainedNodes: !1)
!127 = distinct !DISubprogram(name: "_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", linkageName: "_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !6, scope: null, type: !117, templateParams: !120, declaration: !116, retainedNodes: !1)
!128 = !{!130}
!130 = !DIGlobalVariableExpression(var: !163, expr: !DIExpression(DW_OP_constu, 1, DW_OP_stack_value))
!131 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !132)
!132 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
!133 = !DILocalVariable(name: "this", line: 19, arg: 1, flags: DIFlagArtificial, scope: !5, file: !6, type: !134)
!134 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !10)
!135 = !DILocation(line: 19, column: 39, scope: !5)
!136 = !DILocation(line: 20, column: 17, scope: !137)
!137 = distinct !DILexicalBlock(line: 19, column: 51, file: !6, scope: !5)
!138 = !DILocation(line: 23, column: 17, scope: !137)
!139 = !DILocation(line: 26, column: 15, scope: !137)
!140 = !DILocalVariable(name: "this", line: 8, arg: 1, flags: DIFlagArtificial, scope: !106, file: !6, type: !141)
!141 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !20)
!142 = !DILocation(line: 8, column: 45, scope: !106)
!143 = !DILocalVariable(name: "__f", line: 8, arg: 2, scope: !106, file: !6, type: !61)
!144 = !DILocation(line: 8, column: 63, scope: !106)
!145 = !DILocation(line: 9, column: 9, scope: !146)
!146 = distinct !DILexicalBlock(line: 8, column: 81, file: !6, scope: !106)
!147 = !DILocation(line: 10, column: 13, scope: !146)
!148 = !DILocation(line: 4, column: 5, scope: !149)
!149 = distinct !DILexicalBlock(line: 3, column: 105, file: !6, scope: !107)
!150 = !DILocalVariable(name: "this", line: 8, arg: 1, flags: DIFlagArtificial, scope: !126, file: !6, type: !141)
!151 = !DILocation(line: 8, column: 45, scope: !126)
!152 = !DILocalVariable(name: "__f", line: 8, arg: 2, scope: !126, file: !6, type: !26)
!153 = !DILocation(line: 8, column: 63, scope: !126)
!154 = !DILocation(line: 9, column: 9, scope: !155)
!155 = distinct !DILexicalBlock(line: 8, column: 81, file: !6, scope: !126)
!156 = !DILocation(line: 10, column: 13, scope: !155)
!157 = !DILocation(line: 4, column: 5, scope: !158)
!158 = distinct !DILexicalBlock(line: 3, column: 105, file: !6, scope: !127)
!159 = !DIFile(filename: "BPLFunctionWriter.cpp", directory: "/home/peter/crashdelta")
!160 = !DIFile(filename: "BPLFunctionWriter2.ii", directory: "/home/peter/crashdelta")
!161 = !DIFile(filename: "BPLFunctionWriter.cpp", directory: "/home/peter/crashdelta")
!162 = !{i32 1, !"Debug Info Version", i32 3}
!163 = distinct !DIGlobalVariable(name: "__stored_locally", linkageName: "__stored_locally", line: 2, isLocal: true, isDefinition: true, scope: !114, file: !6, type: !131)
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