67 lines
3.3 KiB
LLVM
67 lines
3.3 KiB
LLVM
; Test that coverage instrumentation does not lose debug location.
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; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 -S | FileCheck %s
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; C++ source:
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; 1: struct A {
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; 2: int f();
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; 3: int x;
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; 4: };
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; 5:
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; 6: int A::f() {
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; 7: return x;
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; 8: }
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; clang++ ../1.cc -O3 -g -S -emit-llvm -fno-strict-aliasing
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; and add sanitize_address to @_ZN1A1fEv
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; Test that __sanitizer_cov_trace_pc_guard call has !dbg pointing to the opening { of A::f().
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; CHECK: call void @__sanitizer_cov_trace_pc_guard(i32*{{.*}}) #{{.*}}, !dbg [[A:!.*]]
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; CHECK: [[A]] = !DILocation(line: 6, scope: !{{.*}})
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.A = type { i32 }
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; Function Attrs: nounwind readonly uwtable
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define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 !dbg !13 {
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entry:
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tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !DIExpression()), !dbg !20
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%x = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0, !dbg !21
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%0 = load i32, i32* %x, align 4, !dbg !21
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ret i32 %0, !dbg !21
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { sanitize_address nounwind readonly uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!17, !18}
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!llvm.ident = !{!19}
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!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)
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!1 = !DIFile(filename: "../1.cc", directory: "/code/llvm/build0")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 32, align: 32, file: !1, elements: !5, identifier: "_ZTS1A")
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!5 = !{!6, !8}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 3, size: 32, align: 32, file: !1, scope: !4, baseType: !7)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!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)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!7, !11}
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
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!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, retainedNodes: !14)
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!14 = !{!15}
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!15 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !13, type: !16)
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
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!17 = !{i32 2, !"Dwarf Version", i32 4}
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!18 = !{i32 2, !"Debug Info Version", i32 3}
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!19 = !{!"clang version 3.5.0 (210251)"}
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!20 = !DILocation(line: 0, scope: !13)
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!21 = !DILocation(line: 7, scope: !13)
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