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1; RUN: opt < %s -passes=tsan -S | FileCheck %s2; Check that vptr reads 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 i8 @Foo(ptr %a) nounwind uwtable sanitize_thread {6entry:7; CHECK: call void @__tsan_vptr_read8 %0 = load i8, ptr %a, align 8, !tbaa !09 ret i8 %010}11!0 = !{!2, !2, i64 0}12!1 = !{!"Simple C/C++ TBAA"}13!2 = !{!"vtable pointer", !1}14