66 lines
3.0 KiB
LLVM
66 lines
3.0 KiB
LLVM
; RUN: opt < %s -passes=tsan -S | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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define void @Increment(ptr nocapture %0) local_unnamed_addr sanitize_thread !dbg !7 {
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call void @llvm.dbg.value(metadata ptr %0, metadata !14, metadata !DIExpression()), !dbg !16
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%2 = load i32, ptr %0, align 4, !dbg !17, !tbaa !18
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call void @llvm.dbg.value(metadata i32 %2, metadata !15, metadata !DIExpression()), !dbg !16
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%3 = add nsw i32 %2, 1, !dbg !22
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store i32 %3, ptr %0, align 4, !dbg !23, !tbaa !18
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ret void, !dbg !24
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}
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; CHECK-LABEL: define void @Increment
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; CHECK-NOT: __tsan_read4
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; CHECK: __tsan_write4
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; CHECK: ret void
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define i32 @NoAccesses(i32 %0) local_unnamed_addr sanitize_thread !dbg !25 {
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call void @llvm.dbg.value(metadata i32 %0, metadata !29, metadata !DIExpression()), !dbg !30
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%2 = add nsw i32 %0, 1, !dbg !31
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ret i32 %2, !dbg !32
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}
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; CHECK-LABEL: define i32 @NoAccesses
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; CHECK-NOT: __tsan_func_entry
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; CHECK-NOT: __tsan_func_exit
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; CHECK: ret i32
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 7, !"uwtable", i32 1}
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!6 = !{!"clang"}
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!7 = distinct !DISubprogram(name: "Increment", scope: !8, file: !8, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
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!8 = !DIFile(filename: "test.c", directory: "")
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!9 = !DISubroutineType(types: !10)
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!10 = !{null, !11}
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !{!14, !15}
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!14 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !8, line: 1, type: !11)
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!15 = !DILocalVariable(name: "x", scope: !7, file: !8, line: 2, type: !12)
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!16 = !DILocation(line: 0, scope: !7)
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!17 = !DILocation(line: 2, column: 11, scope: !7)
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!18 = !{!19, !19, i64 0}
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!19 = !{!"int", !20, i64 0}
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!20 = !{!"omnipotent char", !21, i64 0}
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!21 = !{!"Simple C/C++ TBAA"}
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!22 = !DILocation(line: 3, column: 10, scope: !7)
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!23 = !DILocation(line: 3, column: 6, scope: !7)
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!24 = !DILocation(line: 4, column: 1, scope: !7)
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!25 = distinct !DISubprogram(name: "NoAccesses", scope: !8, file: !8, line: 6, type: !26, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !28)
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!26 = !DISubroutineType(types: !27)
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!27 = !{!12, !12}
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!28 = !{!29}
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!29 = !DILocalVariable(name: "a", arg: 1, scope: !25, file: !8, line: 6, type: !12)
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!30 = !DILocation(line: 0, scope: !25)
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!31 = !DILocation(line: 7, column: 12, scope: !25)
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!32 = !DILocation(line: 7, column: 3, scope: !25)
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