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_lexical_block 7; CHECK-NEXT: DW_AT_low_pc 8; CHECK-NEXT: DW_AT_high_pc 9; CHECK: DW_TAG_variable 10; CHECK-NEXT: DW_AT_const_value (7) 11; CHECK-NEXT: DW_AT_name ("i") 12 13; SECTIONS: DW_TAG_lexical_block 14; SECTIONS-NEXT: DW_AT_ranges 15; SECTIONS: DW_TAG_variable 16; SECTIONS-NEXT: DW_AT_const_value (7) 17; SECTIONS-NEXT: DW_AT_name ("i") 18 19; Test to check that a variable declared within a scope that has basic block 20; sections still produces DW_AT_const_value. 21; Source to generate the IR below: 22 23; void f1(int *); 24; extern bool b; 25; int test() { 26; // i is const throughout the whole scope and should 27; // use DW_AT_const_value. The scope creates basic 28; // block sections and should use DW_AT_ranges. 29; int j = 10; 30; { 31; int i = 7; 32; f1(&j); 33; if (b) 34; f1(&j); 35; } 36; return j; 37; } 38; 39; clang++ -S scoped_section_const.cc -g -O2 -emit-llvm 40 41@b = external local_unnamed_addr global i8, align 1 42 43; Function Attrs: mustprogress uwtable 44define dso_local noundef i32 @_Z4testv() local_unnamed_addr #0 !dbg !9 { 45 %1 = alloca i32, align 4 46 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4, !dbg !17 47 call void @llvm.dbg.value(metadata i32 10, metadata !14, metadata !DIExpression()), !dbg !18 48 store i32 10, ptr %1, align 4, !dbg !19, !tbaa !20 49 call void @llvm.dbg.value(metadata i32 7, metadata !15, metadata !DIExpression()), !dbg !24 50 call void @llvm.dbg.value(metadata ptr %1, metadata !14, metadata !DIExpression(DW_OP_deref)), !dbg !18 51 call void @_Z2f1Pi(ptr noundef nonnull %1), !dbg !25 52 %2 = load i8, ptr @b, align 1, !dbg !26, !tbaa !28, !range !30, !noundef !31 53 %3 = icmp eq i8 %2, 0, !dbg !26 54 br i1 %3, label %5, label %4, !dbg !32 55 564: ; preds = %0 57 call void @llvm.dbg.value(metadata ptr %1, metadata !14, metadata !DIExpression(DW_OP_deref)), !dbg !18 58 call void @_Z2f1Pi(ptr noundef nonnull %1), !dbg !33 59 br label %5, !dbg !33 60 615: ; preds = %4, %0 62 %6 = load i32, ptr %1, align 4, !dbg !34, !tbaa !20 63 call void @llvm.dbg.value(metadata i32 %6, metadata !14, metadata !DIExpression()), !dbg !18 64 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4, !dbg !35 65 ret i32 %6, !dbg !36 66} 67 68; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) 69declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1 70 71declare !dbg !37 void @_Z2f1Pi(ptr noundef) local_unnamed_addr #2 72 73; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) 74declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1 75 76; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) 77declare void @llvm.dbg.value(metadata, metadata, metadata) #3 78 79attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } 80attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) } 81attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } 82attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 83attributes #4 = { nounwind } 84 85!llvm.dbg.cu = !{!0} 86!llvm.module.flags = !{!2, !3, !4, !5, !6, !7} 87!llvm.ident = !{!8} 88 89!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "Debian clang version 16.0.6 (26)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) 90!1 = !DIFile(filename: "scoped_section_const.cc", directory: "", checksumkind: CSK_MD5, checksum: "0406492d2e2e38af35d9ea210ba1f24b") 91!2 = !{i32 7, !"Dwarf Version", i32 5} 92!3 = !{i32 2, !"Debug Info Version", i32 3} 93!4 = !{i32 1, !"wchar_size", i32 4} 94!5 = !{i32 8, !"PIC Level", i32 2} 95!6 = !{i32 7, !"PIE Level", i32 2} 96!7 = !{i32 7, !"uwtable", i32 2} 97!8 = !{!"Debian clang version 16.0.6 (26)"} 98!9 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 3, type: !10, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13) 99!10 = !DISubroutineType(types: !11) 100!11 = !{!12} 101!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 102!13 = !{!14, !15} 103!14 = !DILocalVariable(name: "j", scope: !9, file: !1, line: 6, type: !12) 104!15 = !DILocalVariable(name: "i", scope: !16, file: !1, line: 8, type: !12) 105!16 = distinct !DILexicalBlock(scope: !9, file: !1, line: 7, column: 5) 106!17 = !DILocation(line: 6, column: 5, scope: !9) 107!18 = !DILocation(line: 0, scope: !9) 108!19 = !DILocation(line: 6, column: 9, scope: !9) 109!20 = !{!21, !21, i64 0} 110!21 = !{!"int", !22, i64 0} 111!22 = !{!"omnipotent char", !23, i64 0} 112!23 = !{!"Simple C++ TBAA"} 113!24 = !DILocation(line: 0, scope: !16) 114!25 = !DILocation(line: 9, column: 7, scope: !16) 115!26 = !DILocation(line: 10, column: 11, scope: !27) 116!27 = distinct !DILexicalBlock(scope: !16, file: !1, line: 10, column: 11) 117!28 = !{!29, !29, i64 0} 118!29 = !{!"bool", !22, i64 0} 119!30 = !{i8 0, i8 2} 120!31 = !{} 121!32 = !DILocation(line: 10, column: 11, scope: !16) 122!33 = !DILocation(line: 11, column: 9, scope: !27) 123!34 = !DILocation(line: 13, column: 12, scope: !9) 124!35 = !DILocation(line: 14, column: 1, scope: !9) 125!36 = !DILocation(line: 13, column: 5, scope: !9) 126!37 = !DISubprogram(name: "f1", linkageName: "_Z2f1Pi", scope: !1, file: !1, line: 1, type: !38, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !31) 127!38 = !DISubroutineType(types: !39) 128!39 = !{null, !40} 129!40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) 130