1; REQUIRES: object-emission 2 3; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s \ 4; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V4 %s 5; RUN: llc -mtriple=x86_64-linux -dwarf-version=3 -O0 -filetype=obj < %s \ 6; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V3 %s 7 8; Check that we emit DW_TAG_lexical_block and that it has the right encoding 9; depending on the dwarf version. 10 11; CHECK: DW_TAG_lexical_block 12; CHECK-NOT: DW_TAG 13; CHECK: DW_AT_low_pc [DW_FORM_addr] 14; CHECK-NOT: DW_TAG 15; CHECK-V4: DW_AT_high_pc [DW_FORM_data4] 16; CHECK-V3: DW_AT_high_pc [DW_FORM_addr] 17 18; Test case produced from: 19; void b() { 20; if (int i = 3) 21; return; 22; } 23 24; Function Attrs: nounwind uwtable 25define void @_Z1bv() #0 !dbg !4 { 26entry: 27 %i = alloca i32, align 4 28 call void @llvm.dbg.declare(metadata i32* %i, metadata !11, metadata !DIExpression()), !dbg !14 29 store i32 3, i32* %i, align 4, !dbg !14 30 %0 = load i32, i32* %i, align 4, !dbg !14 31 %tobool = icmp ne i32 %0, 0, !dbg !14 32 br i1 %tobool, label %if.then, label %if.end, !dbg !14 33 34if.then: ; preds = %entry 35 br label %if.end, !dbg !15 36 37if.end: ; preds = %if.then, %entry 38 ret void, !dbg !16 39} 40 41; Function Attrs: nounwind readnone 42declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 43 44attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 45attributes #1 = { nounwind readnone } 46 47!llvm.dbg.cu = !{!0} 48!llvm.module.flags = !{!8, !9} 49!llvm.ident = !{!10} 50 51!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 52!1 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo") 53!2 = !{} 54!4 = distinct !DISubprogram(name: "b", linkageName: "_Z1bv", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) 55!5 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo") 56!6 = !DISubroutineType(types: !7) 57!7 = !{null} 58!8 = !{i32 2, !"Dwarf Version", i32 4} 59!9 = !{i32 1, !"Debug Info Version", i32 3} 60!10 = !{!"clang version 3.5.0 "} 61!11 = !DILocalVariable(name: "i", line: 2, scope: !12, file: !5, type: !13) 62!12 = distinct !DILexicalBlock(line: 2, column: 0, file: !1, scope: !4) 63!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 64!14 = !DILocation(line: 2, scope: !12) 65!15 = !DILocation(line: 3, scope: !12) 66!16 = !DILocation(line: 4, scope: !4) 67