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- ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s
- ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %s
- target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
- target triple = "x86_64-unknown-linux-gnu"
- ; Check origin instrumentation of stores.
- ; Check that debug info for origin propagation code is set correctly.
- ; Function Attrs: nounwind
- define void @Store(i32* nocapture %p, i32 %x) #0 {
- entry:
- tail call void @llvm.dbg.value(metadata i32* %p, i64 0, metadata !11, metadata !DIExpression()), !dbg !16
- tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !16
- store i32 %x, i32* %p, align 4, !dbg !17, !tbaa !18
- ret void, !dbg !22
- }
- ; Function Attrs: nounwind readnone
- declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
- attributes #0 = { nounwind sanitize_memory "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
- attributes #1 = { nounwind readnone }
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!13, !14}
- !llvm.ident = !{!15}
- !0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (204220)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
- !1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
- !2 = !{}
- !3 = !{!4}
- !4 = !DISubprogram(name: "Store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, function: void (i32*, i32)* @Store, variables: !10)
- !5 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
- !6 = !DISubroutineType(types: !7)
- !7 = !{null, !8, !9}
- !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
- !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
- !10 = !{!11, !12}
- !11 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
- !12 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "x", line: 1, arg: 2, scope: !4, file: !5, type: !9)
- !13 = !{i32 2, !"Dwarf Version", i32 4}
- !14 = !{i32 1, !"Debug Info Version", i32 3}
- !15 = !{!"clang version 3.5.0 (204220)"}
- !16 = !DILocation(line: 1, scope: !4)
- !17 = !DILocation(line: 2, scope: !4)
- !18 = !{!19, !19, i64 0}
- !19 = !{!"int", !20, i64 0}
- !20 = !{!"omnipotent char", !21, i64 0}
- !21 = !{!"Simple C/C++ TBAA"}
- !22 = !DILocation(line: 3, scope: !4)
- ; CHECK: @Store
- ; CHECK: load {{.*}} @__msan_param_tls
- ; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
- ; CHECK: store {{.*}}!dbg ![[DBG:[01-9]+]]
- ; CHECK: icmp
- ; CHECK: br i1
- ; CHECK: <label>
- ; Origin tracking level 1: simply store the origin value
- ; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]]
- ; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result.
- ; CHECK-ORIGINS2: [[ORIGIN2:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]])
- ; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]],{{.*}}!dbg !{{.*}}[[DBG]]
- ; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]]
- ; CHECK: <label>
- ; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]]
- ; CHECK: ret void
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