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1; Test that coverage instrumentation does not lose debug location.
2
3; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -S -enable-new-pm=0 | FileCheck %s
4; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 -S | FileCheck %s
5
6; C++ source:
7; 1: struct A {
8; 2:  int f();
9; 3:  int x;
10; 4: };
11; 5:
12; 6: int A::f() {
13; 7:    return x;
14; 8: }
15; clang++ ../1.cc -O3 -g -S -emit-llvm  -fno-strict-aliasing
16; and add sanitize_address to @_ZN1A1fEv
17
18; Test that __sanitizer_cov_trace_pc_guard call has !dbg pointing to the opening { of A::f().
19; CHECK: call void @__sanitizer_cov_trace_pc_guard(i32*{{.*}}) #{{.*}}, !dbg [[A:!.*]]
20; CHECK: [[A]] = !DILocation(line: 6, scope: !{{.*}})
21
22
23target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
24target triple = "x86_64-unknown-linux-gnu"
25
26%struct.A = type { i32 }
27
28; Function Attrs: nounwind readonly uwtable
29define i32 @_ZN1A1fEv(%struct.A* nocapture readonly %this) #0 align 2 !dbg !13 {
30entry:
31  tail call void @llvm.dbg.value(metadata %struct.A* %this, i64 0, metadata !15, metadata !DIExpression()), !dbg !20
32  %x = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0, !dbg !21
33  %0 = load i32, i32* %x, align 4, !dbg !21
34  ret i32 %0, !dbg !21
35}
36
37; Function Attrs: nounwind readnone
38declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
39
40attributes #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" }
41attributes #1 = { nounwind readnone }
42
43!llvm.dbg.cu = !{!0}
44!llvm.module.flags = !{!17, !18}
45!llvm.ident = !{!19}
46
47!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)
48!1 = !DIFile(filename: "../1.cc", directory: "/code/llvm/build0")
49!2 = !{}
50!3 = !{!4}
51!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 32, align: 32, file: !1, elements: !5, identifier: "_ZTS1A")
52!5 = !{!6, !8}
53!6 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 3, size: 32, align: 32, file: !1, scope: !4, baseType: !7)
54!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
55!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)
56!9 = !DISubroutineType(types: !10)
57!10 = !{!7, !11}
58!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
59!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)
60!14 = !{!15}
61!15 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !13, type: !16)
62!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
63!17 = !{i32 2, !"Dwarf Version", i32 4}
64!18 = !{i32 2, !"Debug Info Version", i32 3}
65!19 = !{!"clang version 3.5.0 (210251)"}
66!20 = !DILocation(line: 0, scope: !13)
67!21 = !DILocation(line: 7, scope: !13)
68