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 --check-prefix=SECTIONS %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 --check-prefix=SECTIONS %s 5 6; CHECK: DW_TAG_subprogram 7; CHECK-NEXT: DW_AT_low_pc 8; CHECK-NEXT: DW_AT_high_pc 9; CHECK: DW_TAG_variable 10; CHECK: DW_TAG_variable 11; CHECK-NEXT: DW_AT_location 12; CHECK-NEXT: DW_OP_consts +0, DW_OP_stack_value 13; CHECK-NEXT: DW_OP_consts +7, DW_OP_stack_value 14; CHECK-NEXT: DW_OP_consts +8, DW_OP_stack_value 15; CHECK-NEXT: DW_AT_name ("i") 16 17; SECTIONS: DW_TAG_subprogram 18; SECTIONS-NEXT: DW_AT_ranges 19; SECTIONS: DW_TAG_variable 20; SECTIONS: DW_TAG_variable 21; SECTIONS-NEXT: DW_AT_location 22; SECTIONS-NEXT: DW_OP_consts +0, DW_OP_stack_value 23; SECTIONS-NEXT: DW_OP_consts +7, DW_OP_stack_value 24; SECTIONS-NEXT: DW_OP_consts +7, DW_OP_stack_value 25; SECTIONS-NEXT: DW_OP_consts +8, DW_OP_stack_value 26; 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 and 33; // should *not* use DW_AT_const_value. The scope 34; // creates basic block sections and should use 35; // 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-llvm 48 49 50@b = external local_unnamed_addr global i8, align 1 51 52; Function Attrs: mustprogress uwtable 53define dso_local noundef i32 @_Z4testv() local_unnamed_addr #0 !dbg !10 { 54entry: 55 %j = alloca i32, align 4, !DIAssignID !17 56 #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 !19 59 store i32 10, ptr %j, align 4, !dbg !20, !tbaa !21, !DIAssignID !25 60 #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 !32 63 %loadedv = trunc nuw i8 %0 to i1, !dbg !26 64 br i1 %loadedv, label %if.then, label %if.end, !dbg !33 65 66if.then: ; preds = %entry 67 call void @_Z2f1Pi(ptr noundef nonnull %j), !dbg !34 68 br label %if.end, !dbg !34 69 70if.end: ; preds = %if.then, %entry 71 #dbg_value(i32 8, !15, !DIExpression(), !18) 72 call void @_Z2f2i(i32 noundef 8), !dbg !35 73 %1 = load i32, ptr %j, align 4, !dbg !36, !tbaa !21 74 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %j) #3, !dbg !37 75 ret i32 %1, !dbg !38 76} 77 78; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) 79declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1 80 81declare !dbg !39 void @_Z2f1Pi(ptr noundef) local_unnamed_addr #2 82 83declare !dbg !43 void @_Z2f2i(i32 noundef) local_unnamed_addr #2 84 85; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) 86declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1 87 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}