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