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 4 5target 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" 6target triple = "x86_64-unknown-linux-gnu" 7 8 9; Check origin instrumentation of stores. 10; Check that debug info for origin propagation code is set correctly. 11 12; Function Attrs: nounwind 13define void @Store(ptr nocapture %p, i32 %x) #0 !dbg !4 { 14entry: 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 18 ret void, !dbg !22 19} 20 21; Function Attrs: nounwind readnone 22declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 23 24attributes #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" } 25attributes #1 = { nounwind readnone } 26 27!llvm.dbg.cu = !{!0} 28!llvm.module.flags = !{!13, !14} 29!llvm.ident = !{!15} 30 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") 33!2 = !{} 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) 37!7 = !{null, !8, !9} 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) 40!10 = !{!11, !12} 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) 53 54 55; CHECK-LABEL: @Store 56 57; CHECK-MSAN: load {{.*}} @__msan_param_tls 58; CHECK-MSAN: [[ORIGIN:%[0-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 59 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 64 65; CHECK: store {{.*}}!dbg ![[DBG:[0-9]+]] 66; CHECK: icmp 67; CHECK: br i1 68; CHECK: {{^[0-9]+}}: 69 70; Origin tracking level 1: simply store the origin value 71; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]] 72 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]] 76 77; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]] 78; CHECK: {{^[0-9]+}}: 79; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]] 80; CHECK: ret void 81