1 ; Test that coverage instrumentation does not lose debug location. 2 3 ; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s 4 5 ; C++ source: 6 ; 1: void foo(int *a) { 7 ; 2: if (a) 8 ; 3: *a = 0; 9 ; 4: } 10 ; clang++ if.cc -O3 -g -S -emit-llvm 11 ; and add sanitize_address to @_Z3fooPi 12 13 14 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 15 target triple = "x86_64-unknown-linux-gnu" 16 17 ; Check that __sanitizer_cov call has !dgb pointing to the beginning 18 ; of appropriate basic blocks. 19 ; CHECK-LABEL:_Z3fooPi 20 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[A:!.*]] 21 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[B:!.*]] 22 ; CHECK: call void @__sanitizer_cov(i32*{{.*}}), !dbg [[C:!.*]] 23 ; CHECK: ret void 24 ; CHECK: [[A]] = !DILocation(line: 1, scope: !{{.*}}) 25 ; CHECK: [[B]] = !DILocation(line: 3, column: 5, scope: !{{.*}}) 26 ; CHECK: [[C]] = !DILocation(line: 4, column: 1, scope: !{{.*}}) 27 28 define void @_Z3fooPi(i32* %a) #0 !dbg !4 { 29 entry: 30 tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !DIExpression()), !dbg !15 31 %tobool = icmp eq i32* %a, null, !dbg !16 32 br i1 %tobool, label %if.end, label %if.then, !dbg !16 33 34 if.then: ; preds = %entry 35 store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19 36 br label %if.end, !dbg !18 37 38 if.end: ; preds = %entry, %if.then 39 ret void, !dbg !23 40 } 41 42 ; Function Attrs: nounwind readnone 43 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 44 45 attributes #0 = { nounwind 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" sanitize_address} 46 attributes #1 = { nounwind readnone } 47 48 !llvm.dbg.cu = !{!0} 49 !llvm.module.flags = !{!12, !13} 50 !llvm.ident = !{!14} 51 52 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (217079)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 53 !1 = !DIFile(filename: "if.cc", directory: "FOO") 54 !2 = !{} 55 !3 = !{!4} 56 !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooPi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !10) 57 !5 = !DIFile(filename: "if.cc", directory: "FOO") 58 !6 = !DISubroutineType(types: !7) 59 !7 = !{null, !8} 60 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) 61 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 62 !10 = !{!11} 63 !11 = !DILocalVariable(name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8) 64 !12 = !{i32 2, !"Dwarf Version", i32 4} 65 !13 = !{i32 2, !"Debug Info Version", i32 3} 66 !14 = !{!"clang version 3.6.0 (217079)"} 67 !15 = !DILocation(line: 1, column: 15, scope: !4) 68 !16 = !DILocation(line: 2, column: 7, scope: !17) 69 !17 = distinct !DILexicalBlock(line: 2, column: 7, file: !1, scope: !4) 70 !18 = !DILocation(line: 3, column: 5, scope: !17) 71 !19 = !{!20, !20, i64 0} 72 !20 = !{!"int", !21, i64 0} 73 !21 = !{!"omnipotent char", !22, i64 0} 74 !22 = !{!"Simple C/C++ TBAA"} 75 !23 = !DILocation(line: 4, column: 1, scope: !4) 76
