forked from OSchip/llvm-project
41 lines
1.3 KiB
LLVM
41 lines
1.3 KiB
LLVM
; RUN: opt < %s -tsan -S | FileCheck %s
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; Check that vtable pointer updates are treated in a special way.
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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"
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define void @Foo(i8** nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
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entry:
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; CHECK-LABEL: @Foo
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; CHECK: call void @__tsan_vptr_update
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; CHECK: ret void
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store i8* %b, i8** %a, align 8, !tbaa !0
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ret void
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}
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define void @FooInt(i64* nocapture %a, i64 %b) nounwind uwtable sanitize_thread {
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entry:
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; CHECK-LABEL: @FooInt
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; CHECK: call void @__tsan_vptr_update
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; CHECK: ret void
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store i64 %b, i64* %a, align 8, !tbaa !0
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ret void
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}
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declare i32 @Func1()
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declare i32 @Func2()
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; Test that we properly handle vector stores marked as vtable updates.
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define void @VectorVptrUpdate(<2 x i8*>* nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
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entry:
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; CHECK-LABEL: @VectorVptrUpdate
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; CHECK: call void @__tsan_vptr_update{{.*}}Func1
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; CHECK-NOT: call void @__tsan_vptr_update
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; CHECK: ret void
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store <2 x i8 *> <i8* bitcast(i32 ()* @Func1 to i8 *), i8* bitcast(i32 ()* @Func2 to i8 *)>, <2 x i8 *>* %a, align 8, !tbaa !0
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ret void
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}
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!0 = !{!2, !2, i64 0}
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!1 = !{!"Simple C/C++ TBAA"}
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!2 = !{!"vtable pointer", !1}
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