1; RUN: opt < %s -tsan -S | FileCheck %s
2; Check that vtable pointer updates are treated in a special way.
3target 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"
4
5define void @Foo(i8** nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
6entry:
7; CHECK-LABEL: @Foo
8; CHECK: call void @__tsan_vptr_update
9; CHECK: ret void
10  store i8* %b, i8** %a, align 8, !tbaa !0
11  ret void
12}
13
14define void @FooInt(i64* nocapture %a, i64 %b) nounwind uwtable sanitize_thread {
15entry:
16; CHECK-LABEL: @FooInt
17; CHECK: call void @__tsan_vptr_update
18; CHECK: ret void
19  store i64 %b, i64* %a, align 8, !tbaa !0
20  ret void
21}
22
23
24declare i32 @Func1()
25declare i32 @Func2()
26
27; Test that we properly handle vector stores marked as vtable updates.
28define void @VectorVptrUpdate(<2 x i8*>* nocapture %a, i8* %b) nounwind uwtable sanitize_thread {
29entry:
30; CHECK-LABEL: @VectorVptrUpdate
31; CHECK: call void @__tsan_vptr_update{{.*}}Func1
32; CHECK-NOT: call void @__tsan_vptr_update
33; CHECK: ret void
34  store <2 x i8 *> <i8* bitcast(i32 ()* @Func1 to i8 *), i8* bitcast(i32 ()* @Func2 to i8 *)>,  <2 x i8 *>* %a, align 8, !tbaa !0
35  ret void
36}
37
38!0 = !{!2, !2, i64 0}
39!1 = !{!"Simple C/C++ TBAA", null}
40!2 = !{!"vtable pointer", !1}
41