1; RUN: llc %s --dwarf-version=4 --basic-block-sections=none -filetype=obj -o %t 2; RUN: llvm-dwarfdump %t | FileCheck %s 3; RUN: llc %s --dwarf-version=4 --basic-block-sections=all -filetype=obj -o %t 4; RUN: llvm-dwarfdump %t | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS 5; RUN: llc %s --dwarf-version=5 --basic-block-sections=none -filetype=obj -o %t 6; RUN: llvm-dwarfdump %t | FileCheck %s 7; RUN: llc %s --dwarf-version=5 --basic-block-sections=all -filetype=obj -o %t 8; RUN: llvm-dwarfdump %t | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS 9 10; CHECK: DW_AT_location 11; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value 12; SECTIONS: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value 13; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value 14; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9f, DW_OP_stack_value 15; CHECK-NEXT: DW_AT_name ("buflen") 16 17; This IR is generated by copying basic-block-sections-debug-loc.ll and 18; manually adding one more dbg value in block 2 and modifying the value. 19; With just one dbg value a DW_AT_const_val would be emitted, so we add 20; one more dbg value with a different value to split the ranges. 21; The extra dbg value is added to split the range and to check if the 22; ranges are split correctly with sections. With basic block sections, 23; the dbg value 157 (0x9d) gets split into one more range. 24 25define dso_local void @_ZL4ncatPcjz(i8* %0, i32 %1, ...) unnamed_addr align 32 !dbg !22 { 26.critedge3: 27 call void @llvm.dbg.value(metadata i32 157, metadata !27, metadata !DIExpression()), !dbg !46 28 call void @llvm.va_start(i8* nonnull undef), !dbg !47 29 br label %2 30 312: ; preds = %2, %.critedge3 32 call void @llvm.dbg.value(metadata i32 159, metadata !27, metadata !DIExpression()), !dbg !46 33 br label %2 34} 35 36declare void @llvm.va_start(i8*) 37 38declare void @llvm.dbg.value(metadata, metadata, metadata) 39 40!llvm.dbg.cu = !{!0} 41!llvm.module.flags = !{!20, !21} 42 43!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !2) 44!1 = !DIFile(filename: "bug.cpp", directory: "/proc/self/cwd") 45!2 = !{!3, !6, !9, !10, !11, !13, !16, !17, !15} 46!3 = !DIDerivedType(tag: DW_TAG_typedef, name: "int32_t", file: !4, line: 38, baseType: !5) 47!4 = !DIFile(filename: "stdint.h", directory: "/proc/self/cwd") 48!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 49!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64) 50!7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8) 51!8 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_unsigned_char) 52!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64) 53!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) 54!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !4, line: 51, baseType: !12) 55!12 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) 56!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "UChar", file: !14, line: 372, baseType: !15) 57!14 = !DIFile(filename: "umachine.h", directory: "/proc/self/cwd") 58!15 = !DIBasicType(name: "char16_t", size: 16, encoding: DW_ATE_UTF) 59!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64) 60!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "UBool", file: !14, line: 261, baseType: !18) 61!18 = !DIDerivedType(tag: DW_TAG_typedef, name: "int8_t", file: !4, line: 36, baseType: !19) 62!19 = !DIBasicType(name: "signed char", size: 8, encoding: DW_ATE_signed_char) 63!20 = !{i32 2, !"Debug Info Version", i32 3} 64!21 = !{i32 7, !"PIC Level", i32 2} 65!22 = distinct !DISubprogram(name: "ncat", linkageName: "_ZL4ncatPcjz", scope: !1, file: !1, line: 37, type: !23, scopeLine: 37, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !25) 66!23 = !DISubroutineType(types: !24) 67!24 = !{!3, !9, !11, null} 68!25 = !{!26, !27, !28, !41, !42, !43, !44} 69!26 = !DILocalVariable(name: "buffer", arg: 1, scope: !22, file: !1, line: 37, type: !9) 70!27 = !DILocalVariable(name: "buflen", arg: 2, scope: !22, file: !1, line: 37, type: !11) 71!28 = !DILocalVariable(name: "args", scope: !22, file: !1, line: 38, type: !29) 72!29 = !DIDerivedType(tag: DW_TAG_typedef, name: "va_list", file: !30, line: 14, baseType: !31) 73!30 = !DIFile(filename: "stdarg.h", directory: "/proc/self/cwd") 74!31 = !DIDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", file: !1, line: 38, baseType: !32) 75!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !33, size: 192, elements: !39) 76!33 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "__va_list_tag", file: !1, line: 38, size: 192, flags: DIFlagTypePassByValue, elements: !34, identifier: "_ZTS13__va_list_tag") 77!34 = !{!35, !36, !37, !38} 78!35 = !DIDerivedType(tag: DW_TAG_member, name: "gp_offset", scope: !33, file: !1, line: 38, baseType: !12, size: 32) 79!36 = !DIDerivedType(tag: DW_TAG_member, name: "fp_offset", scope: !33, file: !1, line: 38, baseType: !12, size: 32, offset: 32) 80!37 = !DIDerivedType(tag: DW_TAG_member, name: "overflow_arg_area", scope: !33, file: !1, line: 38, baseType: !10, size: 64, offset: 64) 81!38 = !DIDerivedType(tag: DW_TAG_member, name: "reg_save_area", scope: !33, file: !1, line: 38, baseType: !10, size: 64, offset: 128) 82!39 = !{!40} 83!40 = !DISubrange(count: 1) 84!41 = !DILocalVariable(name: "str", scope: !22, file: !1, line: 39, type: !9) 85!42 = !DILocalVariable(name: "p", scope: !22, file: !1, line: 40, type: !9) 86!43 = !DILocalVariable(name: "e", scope: !22, file: !1, line: 41, type: !6) 87!44 = !DILocalVariable(name: "c", scope: !45, file: !1, line: 49, type: !8) 88!45 = distinct !DILexicalBlock(scope: !22, file: !1, line: 48, column: 45) 89!46 = !DILocation(line: 0, scope: !22) 90!47 = !DILocation(line: 47, column: 3, scope: !22) 91