1 ; struct A { 2 ; A(); 3 ; virtual ~A(); 4 ; }; 5 ; struct B : A { 6 ; B(); 7 ; virtual ~B(); 8 ; }; 9 ; B::B() {} 10 ; CHECK: __ZN1BC1Ev: 11 ; CHECK: .loc 1 [[@LINE-2]] 0 prologue_end 12 ; CHECK-NOT: .loc 1 0 0 prologue_end 13 14 ; The location of the prologue_end marker should not be affected by the presence 15 ; of CFI instructions. 16 17 ; RUN: llc -O0 -filetype=asm < %s | FileCheck %s 18 19 ; ModuleID = 'test1.cpp' 20 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" 21 target triple = "aarch64-apple-ios" 22 23 %struct.B = type { %struct.A } 24 %struct.A = type { i32 (...)** } 25 26 @_ZTV1B = external unnamed_addr constant [4 x i8*] 27 28 ; Function Attrs: nounwind 29 define %struct.B* @_ZN1BC2Ev(%struct.B* %this) unnamed_addr #0 align 2 !dbg !28 { 30 entry: 31 tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !30, metadata !38), !dbg !39 32 %0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, !dbg !40 33 %call = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #3, !dbg !40 34 %1 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, i32 0, !dbg !40 35 store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**), i32 (...)*** %1, align 8, !dbg !40, !tbaa !41 36 ret %struct.B* %this, !dbg !40 37 } 38 39 declare %struct.A* @_ZN1AC2Ev(%struct.A*) 40 41 ; Function Attrs: nounwind 42 define %struct.B* @_ZN1BC1Ev(%struct.B* %this) unnamed_addr #0 align 2 !dbg !32 { 43 entry: 44 tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !34, metadata !38), !dbg !44 45 tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !45, metadata !38) #3, !dbg !47 46 %0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, !dbg !48 47 %call.i = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #3, !dbg !48 48 %1 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, i32 0, !dbg !48 49 store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**), i32 (...)*** %1, align 8, !dbg !48, !tbaa !41 50 ret %struct.B* %this, !dbg !46 51 } 52 53 ; Function Attrs: nounwind readnone 54 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 55 56 attributes #0 = { nounwind } 57 attributes #2 = { nounwind readnone } 58 attributes #3 = { nounwind } 59 60 !llvm.dbg.cu = !{!0} 61 !llvm.module.flags = !{!35, !36} 62 !llvm.ident = !{!37} 63 64 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !27, globals: !2, imports: !2) 65 !1 = !DIFile(filename: "<stdin>", directory: "") 66 !2 = !{} 67 !3 = !{!4, !13} 68 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "B", line: 5, size: 64, align: 64, file: !5, elements: !6, vtableHolder: !"_ZTS1A", identifier: "_ZTS1B") 69 !5 = !DIFile(filename: "test1.cpp", directory: "") 70 !6 = !{!7, !8, !12} 71 !7 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !"_ZTS1B", baseType: !"_ZTS1A") 72 !8 = !DISubprogram(name: "B", line: 6, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !9) 73 !9 = !DISubroutineType(types: !10) 74 !10 = !{null, !11} 75 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1B") 76 !12 = !DISubprogram(name: "~B", line: 7, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !5, scope: !"_ZTS1B", type: !9, containingType: !"_ZTS1B") 77 !13 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 64, align: 64, file: !5, elements: !14, vtableHolder: !"_ZTS1A", identifier: "_ZTS1A") 78 !14 = !{!15, !22, !26} 79 !15 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", size: 64, flags: DIFlagArtificial, file: !5, scope: !16, baseType: !17) 80 !16 = !DIFile(filename: "test1.cpp", directory: "") 81 !17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !18) 82 !18 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", size: 64, baseType: !19) 83 !19 = !DISubroutineType(types: !20) 84 !20 = !{!21} 85 !21 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 86 !22 = !DISubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !5, scope: !"_ZTS1A", type: !23) 87 !23 = !DISubroutineType(types: !24) 88 !24 = !{null, !25} 89 !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A") 90 !26 = !DISubprogram(name: "~A", line: 3, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !5, scope: !"_ZTS1A", type: !23, containingType: !"_ZTS1A") 91 !27 = !{!28, !32} 92 !28 = distinct !DISubprogram(name: "B", linkageName: "_ZN1BC2Ev", line: 9, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 9, file: !5, scope: !"_ZTS1B", type: !9, declaration: !8, variables: !29) 93 !29 = !{!30} 94 !30 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31) 95 !31 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1B") 96 !32 = distinct !DISubprogram(name: "B", linkageName: "_ZN1BC1Ev", line: 9, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 9, file: !5, scope: !"_ZTS1B", type: !9, declaration: !8, variables: !33) 97 !33 = !{!34} 98 !34 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !32, type: !31) 99 !35 = !{i32 2, !"Dwarf Version", i32 4} 100 !36 = !{i32 2, !"Debug Info Version", i32 3} 101 !37 = !{!"clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)"} 102 !38 = !DIExpression() 103 !39 = !DILocation(line: 0, scope: !28) 104 !40 = !DILocation(line: 9, scope: !28) 105 !41 = !{!42, !42, i64 0} 106 !42 = !{!"vtable pointer", !43, i64 0} 107 !43 = !{!"Simple C/C++ TBAA"} 108 !44 = !DILocation(line: 0, scope: !32) 109 !45 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31) 110 !46 = !DILocation(line: 9, scope: !32) 111 !47 = !DILocation(line: 0, scope: !28, inlinedAt: !46) 112 !48 = !DILocation(line: 9, scope: !28, inlinedAt: !46) 113
