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 7; CHECK: DW_TAG_variable 8; CHECK-NEXT: DW_AT_const_value (7) 9; CHECK-NEXT: DW_AT_name ("i") 10 11 12; void f1(); 13; void test() { 14; // constant value with a single location description 15; // Shouldn't change with BB-sections 16; int i = 7; 17; f1(); 18; } 19; $ clang++ -S -emit-llvm -g -O2 const_value_2.cc 20 21 22 23define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { 24entry: 25 call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13 26 tail call void @_Z2f1v(), !dbg !14 27 ret void, !dbg !15 28} 29 30declare !dbg !16 dso_local void @_Z2f1v() local_unnamed_addr 31 32; Function Attrs: nofree nosync nounwind readnone speculatable willreturn 33declare void @llvm.dbg.value(metadata, metadata, metadata) 34 35!llvm.dbg.cu = !{!0} 36!llvm.module.flags = !{!3, !4, !5} 37!llvm.ident = !{!6} 38 39!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) 40!1 = !DIFile(filename: "const_value_2.cc", directory: "/code") 41!2 = !{} 42!3 = !{i32 7, !"Dwarf Version", i32 4} 43!4 = !{i32 2, !"Debug Info Version", i32 3} 44!5 = !{i32 1, !"wchar_size", i32 4} 45!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"} 46!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) 47!8 = !DISubroutineType(types: !9) 48!9 = !{null} 49!10 = !{!11} 50!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 8, type: !12) 51!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 52!13 = !DILocation(line: 0, scope: !7) 53!14 = !DILocation(line: 9, column: 3, scope: !7) 54!15 = !DILocation(line: 10, column: 1, scope: !7) 55!16 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 56