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1; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s2; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s3; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s4; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s5 6; CHECK: DW_TAG_variable7; CHECK-NEXT: DW_AT_const_value (7)8; CHECK-NEXT: DW_AT_name ("i")9 10; Source to generate the IR below:11; void f1();12; extern bool b;13; extern int x;14; void test() {15; // i is a const throughout the whole scope and should16; // use DW_AT_const_value17; int i = 7;18; f1();19; if (b)20; f1();21; }22;23; $ clang++ -S -emit-llvm -g -O2 simple.cc24;25 26@b = external dso_local local_unnamed_addr global i8, align 127 28define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {29entry:30 call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !1331 tail call void @_Z2f1v(), !dbg !1432 %0 = load i8, ptr @b, align 1, !dbg !15, !tbaa !17, !range !2133 %tobool.not = icmp eq i8 %0, 0, !dbg !1534 br i1 %tobool.not, label %if.end, label %if.then, !dbg !2235 36if.then: ; preds = %entry37 tail call void @_Z2f1v(), !dbg !2338 br label %if.end, !dbg !2339 40if.end: ; preds = %if.then, %entry41 ret void, !dbg !2442}43 44declare !dbg !25 dso_local void @_Z2f1v() local_unnamed_addr45 46declare void @llvm.dbg.value(metadata, metadata, metadata)47 48!llvm.dbg.cu = !{!0}49!llvm.module.flags = !{!3, !4, !5}50!llvm.ident = !{!6}51 52!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)53!1 = !DIFile(filename: "simple.cc", directory: "/code")54!2 = !{}55!3 = !{i32 7, !"Dwarf Version", i32 4}56!4 = !{i32 2, !"Debug Info Version", i32 3}57!5 = !{i32 1, !"wchar_size", i32 4}58!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}59!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)60!8 = !DISubroutineType(types: !9)61!9 = !{null}62!10 = !{!11}63!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12)64!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)65!13 = !DILocation(line: 0, scope: !7)66!14 = !DILocation(line: 15, column: 5, scope: !7)67!15 = !DILocation(line: 16, column: 9, scope: !16)68!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9)69!17 = !{!18, !18, i64 0}70!18 = !{!"bool", !19, i64 0}71!19 = !{!"omnipotent char", !20, i64 0}72!20 = !{!"Simple C++ TBAA"}73!21 = !{i8 0, i8 2}74!22 = !DILocation(line: 16, column: 9, scope: !7)75!23 = !DILocation(line: 17, column: 7, scope: !16)76!24 = !DILocation(line: 18, column: 1, scope: !7)77!25 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)78