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