1 ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s 2 ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %s 3 4 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" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 8 ; Check origin instrumentation of stores. 9 ; Check that debug info for origin propagation code is set correctly. 10 11 ; Function Attrs: nounwind 12 define void @Store(i32* nocapture %p, i32 %x) #0 !dbg !4 { 13 entry: 14 tail call void @llvm.dbg.value(metadata i32* %p, i64 0, metadata !11, metadata !DIExpression()), !dbg !16 15 tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !16 16 store i32 %x, i32* %p, align 4, !dbg !17, !tbaa !18 17 ret void, !dbg !22 18 } 19 20 ; Function Attrs: nounwind readnone 21 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 22 23 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" } 24 attributes #1 = { nounwind readnone } 25 26 !llvm.dbg.cu = !{!0} 27 !llvm.module.flags = !{!13, !14} 28 !llvm.ident = !{!15} 29 30 !0 = distinct !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) 31 !1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0") 32 !2 = !{} 33 !3 = !{!4} 34 !4 = distinct !DISubprogram(name: "Store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !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 ; CHECK: load {{.*}} @__msan_param_tls 57 ; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls 58 ; CHECK: store {{.*}}!dbg ![[DBG:[01-9]+]] 59 ; CHECK: icmp 60 ; CHECK: br i1 61 ; CHECK: <label> 62 63 ; Origin tracking level 1: simply store the origin value 64 ; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]] 65 66 ; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result. 67 ; CHECK-ORIGINS2: [[ORIGIN2:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]]) 68 ; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]],{{.*}}!dbg !{{.*}}[[DBG]] 69 70 ; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]] 71 ; CHECK: <label> 72 ; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]] 73 ; CHECK: ret void 74
