1 ; RUN: opt < %s -tsan -S | FileCheck %s 2 ; Check that vtable pointer updates are treated in a special way. 3 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" 4 5 define void @Foo(i8** nocapture %a, i8* %b) nounwind uwtable sanitize_thread { 6 entry: 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 14 define void @FooInt(i64* nocapture %a, i64 %b) nounwind uwtable sanitize_thread { 15 entry: 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 24 declare i32 @Func1() 25 declare i32 @Func2() 26 27 ; Test that we properly handle vector stores marked as vtable updates. 28 define void @VectorVptrUpdate(<2 x i8*>* nocapture %a, i8* %b) nounwind uwtable sanitize_thread { 29 entry: 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
