1; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s 2; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s 3; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - -experimental-debug-variable-locations=true | llvm-dwarfdump - | FileCheck %s 4; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - -experimental-debug-variable-locations=true | 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_reg0 RAX) 10; CHECK-NEXT: DW_AT_name ("i") 11 12; Source to generate the IR below: 13; void f1(); 14; int f2(); 15; void test() { 16; // constant value through partial scope, no BB boundary 17; // Shouldn't change with BB-sections 18; int i = 7; 19; f1(); 20; i = f2(); 21; f1(); 22; } 23; 24; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc 25 26define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { 27entry: 28 call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13 29 tail call void @_Z2f1v(), !dbg !14 30 %call = tail call i32 @_Z2f2v(), !dbg !15 31 call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13 32 tail call void @_Z2f1v(), !dbg !16 33 ret void, !dbg !17 34} 35 36declare !dbg !18 dso_local void @_Z2f1v() local_unnamed_addr 37 38declare !dbg !19 dso_local i32 @_Z2f2v() local_unnamed_addr 39 40declare void @llvm.dbg.value(metadata, metadata, metadata) 41 42!llvm.dbg.cu = !{!0} 43!llvm.module.flags = !{!3, !4, !5} 44!llvm.ident = !{!6} 45 46!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) 47!1 = !DIFile(filename: "loclist_4.cc", directory: "/code") 48!2 = !{} 49!3 = !{i32 7, !"Dwarf Version", i32 4} 50!4 = !{i32 2, !"Debug Info Version", i32 3} 51!5 = !{i32 1, !"wchar_size", i32 4} 52!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"} 53!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10) 54!8 = !DISubroutineType(types: !9) 55!9 = !{null} 56!10 = !{!11} 57!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 6, type: !12) 58!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 59!13 = !DILocation(line: 0, scope: !7) 60!14 = !DILocation(line: 7, column: 3, scope: !7) 61!15 = !DILocation(line: 8, column: 7, scope: !7) 62!16 = !DILocation(line: 9, column: 3, scope: !7) 63!17 = !DILocation(line: 10, column: 1, scope: !7) 64!18 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 65!19 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !20, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 66!20 = !DISubroutineType(types: !21) 67!21 = !{!12} 68