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1 2; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s \3; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V4 %s4; RUN: llc -mtriple=x86_64-linux -dwarf-version=3 -O0 -filetype=obj < %s \5; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V3 %s6 7; Check that we emit DW_TAG_lexical_block and that it has the right encoding8; depending on the dwarf version.9 10; CHECK: DW_TAG_lexical_block11; CHECK-NOT: DW_TAG12; CHECK: DW_AT_low_pc [DW_FORM_addr]13; CHECK-NOT: DW_TAG14; CHECK-V4: DW_AT_high_pc [DW_FORM_data4]15; CHECK-V3: DW_AT_high_pc [DW_FORM_addr]16 17; Test case produced from:18; void b() {19; if (int i = 3)20; return;21; }22 23; Function Attrs: nounwind uwtable24define void @_Z1bv() #0 !dbg !4 {25entry:26 %i = alloca i32, align 427 call void @llvm.dbg.declare(metadata ptr %i, metadata !11, metadata !DIExpression()), !dbg !1428 store i32 3, ptr %i, align 4, !dbg !1429 %0 = load i32, ptr %i, align 4, !dbg !1430 %tobool = icmp ne i32 %0, 0, !dbg !1431 br i1 %tobool, label %if.then, label %if.end, !dbg !1432 33if.then: ; preds = %entry34 br label %if.end, !dbg !1535 36if.end: ; preds = %if.then, %entry37 ret void, !dbg !1638}39 40; Function Attrs: nounwind readnone41declare void @llvm.dbg.declare(metadata, metadata, metadata) #142 43attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }44attributes #1 = { nounwind readnone }45 46!llvm.dbg.cu = !{!0}47!llvm.module.flags = !{!8, !9}48!llvm.ident = !{!10}49 50!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)51!1 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo")52!2 = !{}53!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)54!5 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo")55!6 = !DISubroutineType(types: !7)56!7 = !{null}57!8 = !{i32 2, !"Dwarf Version", i32 4}58!9 = !{i32 1, !"Debug Info Version", i32 3}59!10 = !{!"clang version 3.5.0 "}60!11 = !DILocalVariable(name: "i", line: 2, scope: !12, file: !5, type: !13)61!12 = distinct !DILexicalBlock(line: 2, column: 0, file: !1, scope: !4)62!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)63!14 = !DILocation(line: 2, scope: !12)64!15 = !DILocation(line: 3, scope: !12)65!16 = !DILocation(line: 4, scope: !4)66