| ; RUN: llc -mtriple=arm-apple-darwin -O0 -o - %s | FileCheck %s |
| ; Use DW_OP_breg in variable's location expression if the variable is in a stack slot. |
| |
| ; CHECK: @ DW_OP_breg |
| |
| %struct.SVal = type { ptr, i32 } |
| |
| define i32 @_Z3fooi4SVal(i32 %i, ptr noalias %location) #0 !dbg !4 { |
| entry: |
| %"alloca point" = bitcast i32 0 to i32 |
| br label %realentry |
| |
| realentry: |
| call void @llvm.dbg.value(metadata i32 %i, metadata !21, metadata !DIExpression()), !dbg !22 |
| call void @llvm.dbg.value(metadata ptr %location, metadata !23, metadata !DIExpression()), !dbg !22 |
| %tmp = icmp ne i32 %i, 0, !dbg !25 |
| br i1 %tmp, label %bb, label %bb1, !dbg !25 |
| |
| bb: ; preds = %entry |
| %tmp1 = getelementptr inbounds %struct.SVal, ptr %location, i32 0, i32 1, !dbg !27 |
| %tmp2 = load i32, ptr %tmp1, align 8, !dbg !27 |
| %tmp3 = add i32 %tmp2, %i, !dbg !27 |
| br label %bb2, !dbg !27 |
| |
| bb1: ; preds = %entry |
| %tmp4 = getelementptr inbounds %struct.SVal, ptr %location, i32 0, i32 1, !dbg !28 |
| %tmp5 = load i32, ptr %tmp4, align 8, !dbg !28 |
| %tmp6 = sub i32 %tmp5, 1, !dbg !28 |
| br label %bb2, !dbg !28 |
| |
| bb2: ; preds = %bb1, %bb |
| %.0 = phi i32 [ %tmp3, %bb ], [ %tmp6, %bb1 ] |
| br label %return, !dbg !27 |
| |
| return: ; preds = %bb2 |
| ret i32 %.0, !dbg !27 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind ssp } |
| attributes #1 = { nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3} |
| |
| !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) |
| !1 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330") |
| !2 = !{} |
| !3 = !{i32 1, !"Debug Info Version", i32 3} |
| !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", scope: !1, file: !1, line: 16, type: !5, virtualIndex: 6, spFlags: DISPFlagDefinition, unit: !0) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7, !8} |
| !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !8 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", file: !1, line: 1, size: 64, align: 64, elements: !9) |
| !9 = !{!10, !12, !14, !18} |
| !10 = !DIDerivedType(tag: DW_TAG_member, name: "Data", scope: !8, file: !1, line: 7, baseType: !11, size: 64, align: 64) |
| !11 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: null, size: 64, align: 64) |
| !12 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", scope: !8, file: !1, line: 8, baseType: !13, size: 32, align: 32, offset: 64) |
| !13 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) |
| !14 = !DISubprogram(name: "SVal", scope: !8, file: !1, line: 11, type: !15, virtualIndex: 6, spFlags: 0) |
| !15 = !DISubroutineType(types: !16) |
| !16 = !{null, !17} |
| !17 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: !8, size: 64, align: 64, flags: DIFlagArtificial) |
| !18 = !DISubprogram(name: "~SVal", scope: !8, file: !1, line: 12, type: !19, virtualIndex: 6, spFlags: 0) |
| !19 = !DISubroutineType(types: !20) |
| !20 = !{null, !17, !7} |
| !21 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 16, type: !7) |
| !22 = !DILocation(line: 16, scope: !4) |
| !23 = !DILocalVariable(name: "location", arg: 2, scope: !4, file: !1, line: 16, type: !24) |
| !24 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", scope: !1, file: !1, baseType: !8, size: 32, align: 32) |
| !25 = !DILocation(line: 17, scope: !26) |
| !26 = distinct !DILexicalBlock(scope: !4, file: !1, line: 16) |
| !27 = !DILocation(line: 18, scope: !26) |
| !28 = !DILocation(line: 20, scope: !26) |