1 ; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S -passes=msan 2>&1 | FileCheck "-check-prefixes=CHECK,CHECK-MSAN,CHECK-ORIGINS1" %s
2 ; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S -passes=msan 2>&1 | FileCheck "-check-prefixes=CHECK,CHECK-MSAN,CHECK-ORIGINS2" %s
3 ; RUN: opt < %s -msan-kernel=1 -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck "-check-prefixes=CHECK,CHECK-KMSAN,CHECK-ORIGINS2" %s
5 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"
6 target triple = "x86_64-unknown-linux-gnu"
9 ; Check origin instrumentation of stores.
10 ; Check that debug info for origin propagation code is set correctly.
12 ; Function Attrs: nounwind
13 define void @Store(ptr nocapture %p, i32 %x) #0 !dbg !4 {
15 tail call void @llvm.dbg.value(metadata ptr %p, i64 0, metadata !11, metadata !DIExpression()), !dbg !16
16 tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !16
17 store i32 %x, ptr %p, align 4, !dbg !17, !tbaa !18
21 ; Function Attrs: nounwind readnone
22 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
24 attributes #0 = { nounwind sanitize_memory "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" }
25 attributes #1 = { nounwind readnone }
28 !llvm.module.flags = !{!13, !14}
31 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (204220)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
32 !1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
34 !4 = distinct !DISubprogram(name: "Store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !10)
35 !5 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
36 !6 = !DISubroutineType(types: !7)
38 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
39 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
41 !11 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
42 !12 = !DILocalVariable(name: "x", line: 1, arg: 2, scope: !4, file: !5, type: !9)
43 !13 = !{i32 2, !"Dwarf Version", i32 4}
44 !14 = !{i32 1, !"Debug Info Version", i32 3}
45 !15 = !{!"clang version 3.5.0 (204220)"}
46 !16 = !DILocation(line: 1, scope: !4)
47 !17 = !DILocation(line: 2, scope: !4)
48 !18 = !{!19, !19, i64 0}
49 !19 = !{!"int", !20, i64 0}
50 !20 = !{!"omnipotent char", !21, i64 0}
51 !21 = !{!"Simple C/C++ TBAA"}
52 !22 = !DILocation(line: 3, scope: !4)
57 ; CHECK-MSAN: load {{.*}} @__msan_param_tls
58 ; CHECK-MSAN: [[ORIGIN:%[0-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
60 ; CHECK-KMSAN: %param_shadow
61 ; CHECK-KMSAN: load i32, ptr
62 ; CHECK-KMSAN: %param_origin
63 ; CHECK-KMSAN: [[ORIGIN:%[0-9a-z]+]] = load i32, ptr
65 ; CHECK: store {{.*}}!dbg ![[DBG:[0-9]+]]
70 ; Origin tracking level 1: simply store the origin value
71 ; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]]
73 ; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result.
74 ; CHECK-ORIGINS2: [[ORIGIN2:%[0-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]])
75 ; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]],{{.*}}!dbg !{{.*}}[[DBG]]
77 ; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]]
79 ; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]]