1 // RUN: %clang_cc1 -emit-llvm -o - -O0 -fsanitize=thread %s | FileCheck %s
2 // RUN: %clang_cc1 -emit-llvm -o - -O1 %s | FileCheck %s
3 // RUN: %clang_cc1 -emit-llvm -o - -O1 -relaxed-aliasing -fsanitize=thread %s | FileCheck %s
4 //
5 // RUN: %clang_cc1 -emit-llvm -o - -O0 %s | FileCheck %s --check-prefix=NOTBAA
6 // RUN: %clang_cc1 -emit-llvm -o - -O2 -relaxed-aliasing %s | FileCheck %s --check-prefix=NOTBAA
7 //
8 // Check that we generate TBAA for vtable pointer loads and stores.
9 // When -fthread-sanitizer is used TBAA should be generated at all opt levels
10 // even if -relaxed-aliasing is present.
11 struct A {
12 virtual int foo() const ;
13 virtual ~A();
14 };
15
CreateA()16 void CreateA() {
17 new A;
18 }
19
CallFoo(A * a)20 void CallFoo(A *a) {
21 a->foo();
22 }
23
24 // CHECK: %{{.*}} = load {{.*}} !tbaa ![[NUM:[0-9]+]]
25 // CHECK: store {{.*}} !tbaa ![[NUM]]
26 // CHECK: [[NUM]] = metadata !{metadata !"vtable pointer", metadata !{{.*}}}
27 // NOTBAA-NOT: = metadata !{metadata !"Simple C/C++ TBAA"}
28