73 lines
3.2 KiB
LLVM
73 lines
3.2 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=2 -S | FileCheck %s
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; C++ source:
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; 1: void foo(int *a) {
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; 2: if (a)
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; 3: *a = 0;
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; 4: }
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; clang++ if.cc -O3 -g -S -emit-llvm
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; and add sanitize_address to @_Z3fooPi
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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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; Check that __sanitizer_cov call has !dgb pointing to the beginning
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; of appropriate basic blocks.
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; CHECK-LABEL:_Z3fooPi
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; CHECK: call void @__sanitizer_cov{{.*}}(i32*{{.*}}) #{{.*}}, !dbg [[A:!.*]]
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; CHECK: call void @__sanitizer_cov{{.*}}(i32*{{.*}}) #{{.*}}, !dbg [[B:!.*]]
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; CHECK: ret void
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; CHECK: [[A]] = !DILocation(line: 1, scope: !{{.*}})
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; CHECK: [[B]] = !DILocation(line: 3, column: 5, scope: !{{.*}})
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define void @_Z3fooPi(i32* %a) #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32* %a, i64 0, metadata !11, metadata !DIExpression()), !dbg !15
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%tobool = icmp eq i32* %a, null, !dbg !16
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br i1 %tobool, label %if.end, label %if.then, !dbg !16
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if.then: ; preds = %entry
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store i32 0, i32* %a, align 4, !dbg !18, !tbaa !19
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br label %if.end, !dbg !18
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if.end: ; preds = %entry, %if.then
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ret void, !dbg !23
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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 = { 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}
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!12, !13}
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!llvm.ident = !{!14}
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!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)
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!1 = !DIFile(filename: "if.cc", directory: "FOO")
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!2 = !{}
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!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)
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!5 = !DIFile(filename: "if.cc", directory: "FOO")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11}
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!11 = !DILocalVariable(name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8)
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!12 = !{i32 2, !"Dwarf Version", i32 4}
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!13 = !{i32 2, !"Debug Info Version", i32 3}
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!14 = !{!"clang version 3.6.0 (217079)"}
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!15 = !DILocation(line: 1, column: 15, scope: !4)
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!16 = !DILocation(line: 2, column: 7, scope: !17)
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!17 = distinct !DILexicalBlock(line: 2, column: 7, file: !1, scope: !4)
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!18 = !DILocation(line: 3, column: 5, scope: !17)
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!19 = !{!20, !20, i64 0}
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!20 = !{!"int", !21, i64 0}
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!21 = !{!"omnipotent char", !22, i64 0}
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!22 = !{!"Simple C/C++ TBAA"}
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!23 = !DILocation(line: 4, column: 1, scope: !4)
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