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-NOT: DW_TAG 8; CHECK: DW_AT_name ("tmp") 9; CHECK: DW_TAG_variable 10; CHECK-NEXT: DW_AT_location 11; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_reg3 12; CHECK-NEXT: DW_AT_name ("i") 13 14; Source to generate the IR below: 15; void f1(); 16; int f2(); 17; extern int x; 18; void test() { 19; int tmp = f2(); 20; // non-constant value with a single location description 21; // Shouldn't change with BB-sections 22; int i = tmp; 23; f1(); 24; x = i; 25; } 26; $ clang++ -S -emit-llvm -g -O2 loclist_2.cc 27 28 29@x = external dso_local local_unnamed_addr global i32, align 4 30 31define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { 32entry: 33 %call = tail call i32 @_Z2f2v(), !dbg !14 34 call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !15 35 call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !15 36 tail call void @_Z2f1v(), !dbg !16 37 store i32 %call, ptr @x, align 4, !dbg !17, !tbaa !18 38 ret void, !dbg !22 39} 40 41declare !dbg !23 dso_local i32 @_Z2f2v() local_unnamed_addr 42 43declare !dbg !26 dso_local void @_Z2f1v() local_unnamed_addr 44 45declare void @llvm.dbg.value(metadata, metadata, metadata) 46 47!llvm.dbg.cu = !{!0} 48!llvm.module.flags = !{!3, !4, !5} 49!llvm.ident = !{!6} 50 51!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) 52!1 = !DIFile(filename: "loclist_3.cc", directory: "/code") 53!2 = !{} 54!3 = !{i32 7, !"Dwarf Version", i32 4} 55!4 = !{i32 2, !"Debug Info Version", i32 3} 56!5 = !{i32 1, !"wchar_size", i32 4} 57!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"} 58!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 4, type: !8, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10) 59!8 = !DISubroutineType(types: !9) 60!9 = !{null} 61!10 = !{!11, !13} 62!11 = !DILocalVariable(name: "tmp", scope: !7, file: !1, line: 5, type: !12) 63!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 64!13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 8, type: !12) 65!14 = !DILocation(line: 5, column: 13, scope: !7) 66!15 = !DILocation(line: 0, scope: !7) 67!16 = !DILocation(line: 9, column: 3, scope: !7) 68!17 = !DILocation(line: 10, column: 5, scope: !7) 69!18 = !{!19, !19, i64 0} 70!19 = !{!"int", !20, i64 0} 71!20 = !{!"omnipotent char", !21, i64 0} 72!21 = !{!"Simple C++ TBAA"} 73!22 = !DILocation(line: 11, column: 1, scope: !7) 74!23 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 75!24 = !DISubroutineType(types: !25) 76!25 = !{!12} 77!26 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 78