1 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s | grep DW_OP_breg7 2 ; Use DW_OP_breg7 in variable's location expression if the variable is in a stack slot. 3 4 %struct.SVal = type { i8*, i32 } 5 6 define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp !dbg !17 { 7 entry: 8 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 9 call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !DIExpression()), !dbg !24 10 call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !DIExpression()), !dbg !24 11 %0 = icmp ne i32 %i, 0, !dbg !27 ; <i1> [#uses=1] 12 br i1 %0, label %bb, label %bb1, !dbg !27 13 14 bb: ; preds = %entry 15 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !29 ; <i32*> [#uses=1] 16 %2 = load i32, i32* %1, align 8, !dbg !29 ; <i32> [#uses=1] 17 %3 = add i32 %2, %i, !dbg !29 ; <i32> [#uses=1] 18 br label %bb2, !dbg !29 19 20 bb1: ; preds = %entry 21 %4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !30 ; <i32*> [#uses=1] 22 %5 = load i32, i32* %4, align 8, !dbg !30 ; <i32> [#uses=1] 23 %6 = sub i32 %5, 1, !dbg !30 ; <i32> [#uses=1] 24 br label %bb2, !dbg !30 25 26 bb2: ; preds = %bb1, %bb 27 %.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ] ; <i32> [#uses=1] 28 br label %return, !dbg !29 29 30 return: ; preds = %bb2 31 ret i32 %.0, !dbg !29 32 } 33 34 define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2 !dbg !16 { 35 entry: 36 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 37 call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !DIExpression()), !dbg !34 38 %0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1] 39 store i8* null, i8** %0, align 8, !dbg !34 40 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1] 41 store i32 0, i32* %1, align 8, !dbg !34 42 br label %return, !dbg !34 43 44 return: ; preds = %entry 45 ret void, !dbg !35 46 } 47 48 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 49 50 define i32 @main() nounwind ssp !dbg !20 { 51 entry: 52 %0 = alloca %struct.SVal ; <%struct.SVal*> [#uses=3] 53 %v = alloca %struct.SVal ; <%struct.SVal*> [#uses=4] 54 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 55 call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !DIExpression()), !dbg !41 56 call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41 57 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1] 58 store i32 1, i32* %1, align 8, !dbg !42 59 %2 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1] 60 %3 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1] 61 %4 = load i8*, i8** %3, align 8, !dbg !43 ; <i8*> [#uses=1] 62 store i8* %4, i8** %2, align 8, !dbg !43 63 %5 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1] 64 %6 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1] 65 %7 = load i32, i32* %6, align 8, !dbg !43 ; <i32> [#uses=1] 66 store i32 %7, i32* %5, align 8, !dbg !43 67 %8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0] 68 call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !DIExpression()), !dbg !43 69 br label %return, !dbg !45 70 71 return: ; preds = %entry 72 ret i32 0, !dbg !45 73 } 74 75 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 76 77 !llvm.dbg.cu = !{!3} 78 !llvm.module.flags = !{!49} 79 !46 = !{!16, !17, !20} 80 81 !0 = !DISubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !47, scope: !1, type: !14) 82 !1 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 128, align: 64, file: !47, scope: !2, elements: !4) 83 !2 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330") 84 !3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 1, file: !47, enums: !48, retainedTypes: !48, subprograms: !46, imports: null) 85 !4 = !{!5, !7, !0, !9} 86 !5 = !DIDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !47, scope: !1, baseType: !6) 87 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: null) 88 !7 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !47, scope: !1, baseType: !8) 89 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 90 !9 = !DISubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 12, file: !47, scope: !1, type: !10) 91 !10 = !DISubroutineType(types: !11) 92 !11 = !{null, !12, !13} 93 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !1) 94 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 95 !14 = !DISubroutineType(types: !15) 96 !15 = !{null, !12} 97 !16 = distinct !DISubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !47, scope: !1, type: !14) 98 !17 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 16, file: !47, scope: !2, type: !18) 99 !18 = !DISubroutineType(types: !19) 100 !19 = !{!13, !13, !1} 101 !20 = distinct !DISubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 23, file: !47, scope: !2, type: !21) 102 !21 = !DISubroutineType(types: !22) 103 !22 = !{!13} 104 !23 = !DILocalVariable(name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13) 105 !24 = !DILocation(line: 16, scope: !17) 106 !25 = !DILocalVariable(name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26) 107 !26 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 64, align: 64, file: !47, scope: !2, baseType: !1) 108 !27 = !DILocation(line: 17, scope: !28) 109 !28 = distinct !DILexicalBlock(line: 16, column: 0, file: !47, scope: !17) 110 !29 = !DILocation(line: 18, scope: !28) 111 !30 = !DILocation(line: 20, scope: !28) 112 !31 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32) 113 !32 = !DIDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !33) 114 !33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: !1) 115 !34 = !DILocation(line: 11, scope: !16) 116 !35 = !DILocation(line: 11, scope: !36) 117 !36 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !37) 118 !37 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !16) 119 !38 = !DILocalVariable(name: "v", line: 24, scope: !39, file: !2, type: !1) 120 !39 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !40) 121 !40 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !20) 122 !41 = !DILocation(line: 24, scope: !39) 123 !42 = !DILocation(line: 25, scope: !39) 124 !43 = !DILocation(line: 26, scope: !39) 125 !44 = !DILocalVariable(name: "k", line: 26, scope: !39, file: !2, type: !13) 126 !45 = !DILocation(line: 27, scope: !39) 127 !47 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330") 128 !48 = !{} 129 !49 = !{i32 1, !"Debug Info Version", i32 3} 130
