xref: /aosp_15_r20/external/clang/test/CodeGen/tbaa-ms-abi.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -triple i686-pc-win32 -disable-llvm-optzns -emit-llvm -o - -O1 %s | FileCheck %s
2*67e74705SXin Li //
3*67e74705SXin Li // Test that TBAA works in the Microsoft C++ ABI.  We used to error out while
4*67e74705SXin Li // attempting to mangle RTTI.
5*67e74705SXin Li 
6*67e74705SXin Li struct StructA {
7*67e74705SXin Li   int a;
8*67e74705SXin Li };
9*67e74705SXin Li 
10*67e74705SXin Li struct StructB : virtual StructA {
11*67e74705SXin Li   StructB();
12*67e74705SXin Li };
13*67e74705SXin Li 
StructB()14*67e74705SXin Li StructB::StructB() {
15*67e74705SXin Li   a = 42;
16*67e74705SXin Li // CHECK: store i32 42, i32* {{.*}}, !tbaa [[TAG_A_i32:!.*]]
17*67e74705SXin Li }
18*67e74705SXin Li 
19*67e74705SXin Li // CHECK: [[TYPE_INT:!.*]] = !{!"int", [[TYPE_CHAR:!.*]], i64 0}
20*67e74705SXin Li // CHECK: [[TYPE_CHAR]] = !{!"omnipotent char", !
21*67e74705SXin Li // CHECK: [[TAG_A_i32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 0}
22*67e74705SXin Li // CHECK: [[TYPE_A]] = !{!"?AUStructA@@", [[TYPE_INT]], i64 0}
23