| ; Test that coverage instrumentation does not lose debug location. |
| |
| ; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s |
| |
| ; C++ source: |
| ; 1: void foo(int *a) { |
| ; 2: if (a) |
| ; 3: *a = 0; |
| ; 4: } |
| ; clang++ if.cc -O3 -g -S -emit-llvm |
| ; and add sanitize_address to @_Z3fooPi |
| |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Check that __sanitizer_cov call has !dgb pointing to the beginning |
| ; of appropriate basic blocks. |
| ; CHECK-LABEL:_Z3fooPi |
| ; CHECK: call void @__sanitizer_cov{{.*}}(i32*{{.*}}), !dbg [[A:!.*]] |
| ; CHECK: call void @__sanitizer_cov{{.*}}(i32*{{.*}}), !dbg [[B:!.*]] |
| ; CHECK: ret void |
| ; CHECK: [[A]] = !DILocation(line: 1, scope: !{{.*}}) |
| ; CHECK: [[B]] = !DILocation(line: 3, column: 5, scope: !{{.*}}) |
| |
| define void @_Z3fooPi(i32* %a) #0 !dbg !4 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !DIExpression()), !dbg !15 |
| %tobool = icmp eq i32* %a, null, !dbg !16 |
| br i1 %tobool, label %if.end, label %if.then, !dbg !16 |
| |
| if.then: ; preds = %entry |
| store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19 |
| br label %if.end, !dbg !18 |
| |
| if.end: ; preds = %entry, %if.then |
| ret void, !dbg !23 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| |
| 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} |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!12, !13} |
| !llvm.ident = !{!14} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (217079)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "if.cc", directory: "FOO") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooPi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !10) |
| !5 = !DIFile(filename: "if.cc", directory: "FOO") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null, !8} |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) |
| !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !10 = !{!11} |
| !11 = !DILocalVariable(name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8) |
| !12 = !{i32 2, !"Dwarf Version", i32 4} |
| !13 = !{i32 2, !"Debug Info Version", i32 3} |
| !14 = !{!"clang version 3.6.0 (217079)"} |
| !15 = !DILocation(line: 1, column: 15, scope: !4) |
| !16 = !DILocation(line: 2, column: 7, scope: !17) |
| !17 = distinct !DILexicalBlock(line: 2, column: 7, file: !1, scope: !4) |
| !18 = !DILocation(line: 3, column: 5, scope: !17) |
| !19 = !{!20, !20, i64 0} |
| !20 = !{!"int", !21, i64 0} |
| !21 = !{!"omnipotent char", !22, i64 0} |
| !22 = !{!"Simple C/C++ TBAA"} |
| !23 = !DILocation(line: 4, column: 1, scope: !4) |
