1 ; Test that coverage instrumentation does not lose debug location. 2 3 ; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -S | FileCheck %s 4 5 ; C++ source: 6 ; 1: struct A { 7 ; 2: int f(); 8 ; 3: int x; 9 ; 4: }; 10 ; 5: 11 ; 6: int A::f() { 12 ; 7: return x; 13 ; 8: } 14 ; clang++ ../1.cc -O3 -g -S -emit-llvm -fno-strict-aliasing 15 ; and add sanitize_address to @_ZN1A1fEv 16 17 ; Test that __sanitizer_cov call has !dbg pointing to the opening { of A::f(). 18 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]] 19 ; CHECK: [[A]] = !DILocation(line: 6, scope: !{{.*}}) 20 21 22 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 23 target triple = "x86_64-unknown-linux-gnu" 24 25 %struct.A = type { i32 } 26 27 ; Function Attrs: nounwind readonly uwtable 28 define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 !dbg !13 { 29 entry: 30 tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !DIExpression()), !dbg !20 31 %x = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0, !dbg !21 32 %0 = load i32, i32* %x, align 4, !dbg !21 33 ret i32 %0, !dbg !21 34 } 35 36 ; Function Attrs: nounwind readnone 37 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 38 39 attributes #0 = { sanitize_address nounwind readonly uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 40 attributes #1 = { nounwind readnone } 41 42 !llvm.dbg.cu = !{!0} 43 !llvm.module.flags = !{!17, !18} 44 !llvm.ident = !{!19} 45 46 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210251)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2) 47 !1 = !DIFile(filename: "../1.cc", directory: "/code/llvm/build0") 48 !2 = !{} 49 !3 = !{!4} 50 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 32, align: 32, file: !1, elements: !5, identifier: "_ZTS1A") 51 !5 = !{!6, !8} 52 !6 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 3, size: 32, align: 32, file: !1, scope: !4, baseType: !7) 53 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 54 !8 = !DISubprogram(name: "f", linkageName: "_ZN1A1fEv", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !1, scope: !4, type: !9) 55 !9 = !DISubroutineType(types: !10) 56 !10 = !{!7, !11} 57 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4) 58 !13 = distinct !DISubprogram(name: "f", linkageName: "_ZN1A1fEv", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 6, file: !1, scope: !4, type: !9, declaration: !8, variables: !14) 59 !14 = !{!15} 60 !15 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !13, type: !16) 61 !16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4) 62 !17 = !{i32 2, !"Dwarf Version", i32 4} 63 !18 = !{i32 2, !"Debug Info Version", i32 3} 64 !19 = !{!"clang version 3.5.0 (210251)"} 65 !20 = !DILocation(line: 0, scope: !13) 66 !21 = !DILocation(line: 7, scope: !13) 67
