1; RUN: llc -mtriple=arm-apple-darwin -O0 -o - %s | FileCheck %s 2; Use DW_OP_breg in variable's location expression if the variable is in a stack slot. 3 4; CHECK: @ DW_OP_breg 5 6%struct.SVal = type { i8*, i32 } 7 8define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) #0 !dbg !4 { 9entry: 10 %"alloca point" = bitcast i32 0 to i32 11 call void @llvm.dbg.value(metadata i32 %i, metadata !21, metadata !DIExpression()), !dbg !22 12 call void @llvm.dbg.value(metadata %struct.SVal* %location, metadata !23, metadata !DIExpression()), !dbg !22 13 %tmp = icmp ne i32 %i, 0, !dbg !25 14 br i1 %tmp, label %bb, label %bb1, !dbg !25 15 16bb: ; preds = %entry 17 %tmp1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !27 18 %tmp2 = load i32, i32* %tmp1, align 8, !dbg !27 19 %tmp3 = add i32 %tmp2, %i, !dbg !27 20 br label %bb2, !dbg !27 21 22bb1: ; preds = %entry 23 %tmp4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !28 24 %tmp5 = load i32, i32* %tmp4, align 8, !dbg !28 25 %tmp6 = sub i32 %tmp5, 1, !dbg !28 26 br label %bb2, !dbg !28 27 28bb2: ; preds = %bb1, %bb 29 %.0 = phi i32 [ %tmp3, %bb ], [ %tmp6, %bb1 ] 30 br label %return, !dbg !27 31 32return: ; preds = %bb2 33 ret i32 %.0, !dbg !27 34} 35 36declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 37declare void @llvm.dbg.value(metadata, metadata, metadata) #1 38 39attributes #0 = { nounwind ssp } 40attributes #1 = { nounwind readnone speculatable willreturn } 41 42!llvm.dbg.cu = !{!0} 43!llvm.module.flags = !{!3} 44 45!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 46!1 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330") 47!2 = !{} 48!3 = !{i32 1, !"Debug Info Version", i32 3} 49!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", scope: !1, file: !1, line: 16, type: !5, virtualIndex: 6, spFlags: DISPFlagDefinition, unit: !0) 50!5 = !DISubroutineType(types: !6) 51!6 = !{!7, !7, !8} 52!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 53!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", file: !1, line: 1, size: 64, align: 64, elements: !9) 54!9 = !{!10, !12, !14, !18} 55!10 = !DIDerivedType(tag: DW_TAG_member, name: "Data", scope: !8, file: !1, line: 7, baseType: !11, size: 64, align: 64) 56!11 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: null, size: 64, align: 64) 57!12 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", scope: !8, file: !1, line: 8, baseType: !13, size: 32, align: 32, offset: 64) 58!13 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 59!14 = !DISubprogram(name: "SVal", scope: !8, file: !1, line: 11, type: !15, virtualIndex: 6, spFlags: 0) 60!15 = !DISubroutineType(types: !16) 61!16 = !{null, !17} 62!17 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: !8, size: 64, align: 64, flags: DIFlagArtificial) 63!18 = !DISubprogram(name: "~SVal", scope: !8, file: !1, line: 12, type: !19, virtualIndex: 6, spFlags: 0) 64!19 = !DISubroutineType(types: !20) 65!20 = !{null, !17, !7} 66!21 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 16, type: !7) 67!22 = !DILocation(line: 16, scope: !4) 68!23 = !DILocalVariable(name: "location", arg: 2, scope: !4, file: !1, line: 16, type: !24) 69!24 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", scope: !1, file: !1, baseType: !8, size: 32, align: 32) 70!25 = !DILocation(line: 17, scope: !26) 71!26 = distinct !DILexicalBlock(scope: !4, file: !1, line: 16) 72!27 = !DILocation(line: 18, scope: !26) 73!28 = !DILocation(line: 20, scope: !26) 74