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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 --check-prefix=SECTIONS %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 --check-prefix=SECTIONS %s5 6; CHECK: DW_TAG_subprogram7; CHECK-NEXT: DW_AT_low_pc8; CHECK-NEXT: DW_AT_high_pc9; CHECK: DW_TAG_variable10; CHECK: DW_TAG_variable11; CHECK-NEXT: DW_AT_location12; CHECK-NEXT: DW_OP_consts +0, DW_OP_stack_value13; CHECK-NEXT: DW_OP_consts +7, DW_OP_stack_value14; CHECK-NEXT: DW_OP_consts +8, DW_OP_stack_value15; CHECK-NEXT: DW_AT_name ("i")16 17; SECTIONS: DW_TAG_subprogram18; SECTIONS-NEXT: DW_AT_ranges19; SECTIONS: DW_TAG_variable20; SECTIONS: DW_TAG_variable21; SECTIONS-NEXT: DW_AT_location22; SECTIONS-NEXT: DW_OP_consts +0, DW_OP_stack_value23; SECTIONS-NEXT: DW_OP_consts +7, DW_OP_stack_value24; SECTIONS-NEXT: DW_OP_consts +7, DW_OP_stack_value25; SECTIONS-NEXT: DW_OP_consts +8, DW_OP_stack_value26; SECTIONS-NEXT: DW_AT_name ("i")27 28; void f1(int *);29; void f2(int);30; extern bool b;31; int test() {32; // i is not a const throughout the whole scope and33; // should *not* use DW_AT_const_value. The scope34; // creates basic block sections and should use35; // DW_AT_ranges.36; int i = 0;37; int j = 10;38; {39; i = 7;40; if (b)41; f1(&j);42; }43; i = 8;44; f2(i);45; return j;46; }47; clang++ -S scoped_section.cc -g -O2 -emit-llvm48 49 50@b = external local_unnamed_addr global i8, align 151 52; Function Attrs: mustprogress uwtable53define dso_local noundef i32 @_Z4testv() local_unnamed_addr #0 !dbg !10 {54entry:55 %j = alloca i32, align 4, !DIAssignID !1756 #dbg_assign(i1 undef, !16, !DIExpression(), !17, ptr %j, !DIExpression(), !18)57 #dbg_value(i32 0, !15, !DIExpression(), !18)58 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %j) #3, !dbg !1959 store i32 10, ptr %j, align 4, !dbg !20, !tbaa !21, !DIAssignID !2560 #dbg_assign(i32 10, !16, !DIExpression(), !25, ptr %j, !DIExpression(), !18)61 #dbg_value(i32 7, !15, !DIExpression(), !18)62 %0 = load i8, ptr @b, align 1, !dbg !26, !tbaa !29, !range !31, !noundef !3263 %loadedv = trunc nuw i8 %0 to i1, !dbg !2664 br i1 %loadedv, label %if.then, label %if.end, !dbg !3365 66if.then: ; preds = %entry67 call void @_Z2f1Pi(ptr noundef nonnull %j), !dbg !3468 br label %if.end, !dbg !3469 70if.end: ; preds = %if.then, %entry71 #dbg_value(i32 8, !15, !DIExpression(), !18)72 call void @_Z2f2i(i32 noundef 8), !dbg !3573 %1 = load i32, ptr %j, align 4, !dbg !36, !tbaa !2174 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %j) #3, !dbg !3775 ret i32 %1, !dbg !3876}77 78; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)79declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #180 81declare !dbg !39 void @_Z2f1Pi(ptr noundef) local_unnamed_addr #282 83declare !dbg !43 void @_Z2f2i(i32 noundef) local_unnamed_addr #284 85; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)86declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #187 88attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }89attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }90attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }91attributes #3 = { nounwind }92 93!llvm.dbg.cu = !{!0}94!llvm.module.flags = !{!2, !3, !4, !5, !6, !7, !8}95!llvm.ident = !{!9}96 97!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 20.0.0git (git@github.com:tmsri/llvm-project.git 11a50269e82b6dce49249c5cbe3a989b06f0848f)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)98!1 = !DIFile(filename: "scoped_section.cc", directory: "", checksumkind: CSK_MD5, checksum: "9dda8d16c16edf7724c901692e07587c")99!2 = !{i32 7, !"Dwarf Version", i32 5}100!3 = !{i32 2, !"Debug Info Version", i32 3}101!4 = !{i32 1, !"wchar_size", i32 4}102!5 = !{i32 8, !"PIC Level", i32 2}103!6 = !{i32 7, !"PIE Level", i32 2}104!7 = !{i32 7, !"uwtable", i32 2}105!8 = !{i32 7, !"debug-info-assignment-tracking", i1 true}106!9 = !{!"clang version 20.0.0git (git@github.com:tmsri/llvm-project.git 11a50269e82b6dce49249c5cbe3a989b06f0848f)"}107!10 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 4, type: !11, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !14)108!11 = !DISubroutineType(types: !12)109!12 = !{!13}110!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)111!14 = !{!15, !16}112!15 = !DILocalVariable(name: "i", scope: !10, file: !1, line: 7, type: !13)113!16 = !DILocalVariable(name: "j", scope: !10, file: !1, line: 8, type: !13)114!17 = distinct !DIAssignID()115!18 = !DILocation(line: 0, scope: !10)116!19 = !DILocation(line: 8, column: 5, scope: !10)117!20 = !DILocation(line: 8, column: 9, scope: !10)118!21 = !{!22, !22, i64 0}119!22 = !{!"int", !23, i64 0}120!23 = !{!"omnipotent char", !24, i64 0}121!24 = !{!"Simple C++ TBAA"}122!25 = distinct !DIAssignID()123!26 = !DILocation(line: 11, column: 11, scope: !27)124!27 = distinct !DILexicalBlock(scope: !28, file: !1, line: 11, column: 11)125!28 = distinct !DILexicalBlock(scope: !10, file: !1, line: 9, column: 5)126!29 = !{!30, !30, i64 0}127!30 = !{!"bool", !23, i64 0}128!31 = !{i8 0, i8 2}129!32 = !{}130!33 = !DILocation(line: 11, column: 11, scope: !28)131!34 = !DILocation(line: 12, column: 9, scope: !27)132!35 = !DILocation(line: 15, column: 5, scope: !10)133!36 = !DILocation(line: 16, column: 12, scope: !10)134!37 = !DILocation(line: 17, column: 1, scope: !10)135!38 = !DILocation(line: 16, column: 5, scope: !10)136!39 = !DISubprogram(name: "f1", linkageName: "_Z2f1Pi", scope: !1, file: !1, line: 1, type: !40, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)137!40 = !DISubroutineType(types: !41)138!41 = !{null, !42}139!42 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)140!43 = !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !44, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)141!44 = !DISubroutineType(types: !45)142!45 = !{null, !13}