| // RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s |
| // |
| // Check that we generate correct TBAA information for reference accesses. |
| |
| struct S; |
| |
| struct B { |
| S &s; |
| B(S &s); |
| S &get(); |
| }; |
| |
| B::B(S &s) : s(s) { |
| // CHECK-LABEL: _ZN1BC2ER1S |
| // Check initialization of the reference parameter. |
| // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer:!.*]] |
| |
| // Check loading of the reference parameter. |
| // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] |
| |
| // Check initialization of the reference member. |
| // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] |
| } |
| |
| S &B::get() { |
| // CHECK-LABEL: _ZN1B3getEv |
| // Check that we access the reference as a structure member. |
| // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_B_s:!.*]] |
| return s; |
| } |
| |
| // CHECK-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0} |
| // CHECK-DAG: [[TAG_B_s]] = !{[[TYPE_B:!.*]], [[TYPE_pointer]], i64 0} |
| // |
| // CHECK-DAG: [[TYPE_B]] = !{!"_ZTS1B", [[TYPE_pointer]], i64 0} |
| // CHECK-DAG: [[TYPE_pointer]] = !{!"any pointer", [[TYPE_char:!.*]], i64 0} |
| // CHECK-DAG: [[TYPE_char]] = !{!"omnipotent char", {{!.*}}, i64 0} |
