| ; 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 !dbg !4 { |
| 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 = 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) |
| !1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0") |
| !2 = !{} |
| !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) |
| !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(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8) |
| !12 = !DILocalVariable(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-LABEL: @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 |
