1; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s 2; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s 3; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s 4; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s 5 6; CHECK: DW_TAG_variable 7; CHECK-NEXT: DW_AT_location 8; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value 9; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +9, DW_OP_stack_value 10; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value 11; CHECK-NEXT: DW_AT_name ("i") 12 13; Source to generate the IR below: 14; void f1(); 15; int f2(int); 16; extern bool b; 17; extern int x; 18; void test() { 19; // Value is either 7 or 9 so DW_AT_const_value cannot be used and 3 loc 20; // list entries have to be generated. 21; int i = 7; 22; f1(); 23; if (b) { 24; i += 2; 25; f2(i); 26; } 27; } 28; $ clang++ -S -emit-llvm -g -O2 loclist_1.cc 29; 30 31@b = external dso_local local_unnamed_addr global i8, align 1 32 33define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { 34entry: 35 call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13 36 tail call void @_Z2f1v(), !dbg !14 37 %0 = load i8, ptr @b, align 1, !dbg !15, !tbaa !17, !range !21 38 %tobool.not = icmp eq i8 %0, 0, !dbg !15 39 br i1 %tobool.not, label %if.end, label %if.then, !dbg !22 40 41if.then: ; preds = %entry 42 call void @llvm.dbg.value(metadata i32 9, metadata !11, metadata !DIExpression()), !dbg !13 43 %call = tail call i32 @_Z2f2i(i32 9), !dbg !23 44 br label %if.end, !dbg !25 45 46if.end: ; preds = %if.then, %entry 47 ret void, !dbg !26 48} 49 50declare !dbg !27 dso_local void @_Z2f1v() local_unnamed_addr 51 52declare !dbg !28 dso_local i32 @_Z2f2i(i32) local_unnamed_addr 53 54; Function Attrs: nofree nosync nounwind readnone speculatable willreturn 55declare void @llvm.dbg.value(metadata, metadata, metadata) #2 56 57!llvm.dbg.cu = !{!0} 58!llvm.module.flags = !{!3, !4, !5} 59!llvm.ident = !{!6} 60 61!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 62!1 = !DIFile(filename: "loclist_1.cc", directory: "/code") 63!2 = !{} 64!3 = !{i32 7, !"Dwarf Version", i32 4} 65!4 = !{i32 2, !"Debug Info Version", i32 3} 66!5 = !{i32 1, !"wchar_size", i32 4} 67!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"} 68!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10) 69!8 = !DISubroutineType(types: !9) 70!9 = !{null} 71!10 = !{!11} 72!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12) 73!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 74!13 = !DILocation(line: 0, scope: !7) 75!14 = !DILocation(line: 15, column: 5, scope: !7) 76!15 = !DILocation(line: 16, column: 9, scope: !16) 77!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9) 78!17 = !{!18, !18, i64 0} 79!18 = !{!"bool", !19, i64 0} 80!19 = !{!"omnipotent char", !20, i64 0} 81!20 = !{!"Simple C++ TBAA"} 82!21 = !{i8 0, i8 2} 83!22 = !DILocation(line: 16, column: 9, scope: !7) 84!23 = !DILocation(line: 18, column: 7, scope: !24) 85!24 = distinct !DILexicalBlock(scope: !16, file: !1, line: 16, column: 12) 86!25 = !DILocation(line: 19, column: 5, scope: !24) 87!26 = !DILocation(line: 20, column: 1, scope: !7) 88!27 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 89!28 = !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !29, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 90!29 = !DISubroutineType(types: !30) 91!30 = !{!12, !12} 92