1 // RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,OLD-PATH 2 // RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-linux -O1 -disable-llvm-passes %s -emit-llvm -new-struct-path-tbaa -o - | FileCheck %s -check-prefixes=CHECK,NEW-PATH 3 // 4 // Check that we generate correct TBAA information for reference accesses. 5 6 struct S; 7 8 struct B { 9 S &s; 10 B(S &s); 11 S &get(); 12 }; 13 14 B::B(S &s) : s(s) { 15 // CHECK-LABEL: _ZN1BC2ER1S 16 // Check initialization of the reference parameter. 17 // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer:!.*]] 18 19 // Check loading of the reference parameter. 20 // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] 21 22 // Check initialization of the reference member. 23 // CHECK: store %struct.S* {{.*}}, %struct.S** {{.*}}, !tbaa [[TAG_pointer]] 24 } 25 26 S &B::get() { 27 // CHECK-LABEL: _ZN1B3getEv 28 // Check that we access the reference as a structure member. 29 // CHECK: load %struct.S*, %struct.S** {{.*}}, !tbaa [[TAG_B_s:!.*]] 30 return s; 31 } 32 33 // OLD-PATH-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0} 34 // OLD-PATH-DAG: [[TAG_B_s]] = !{[[TYPE_B:!.*]], [[TYPE_pointer]], i64 0} 35 // 36 // OLD-PATH-DAG: [[TYPE_B]] = !{!"_ZTS1B", [[TYPE_pointer]], i64 0} 37 // OLD-PATH-DAG: [[TYPE_pointer]] = !{!"any pointer", [[TYPE_char:!.*]], i64 0} 38 // OLD-PATH-DAG: [[TYPE_char]] = !{!"omnipotent char", {{!.*}}, i64 0} 39 40 // NEW-PATH-DAG: [[TAG_pointer]] = !{[[TYPE_pointer:!.*]], [[TYPE_pointer]], i64 0, i64 8} 41 // NEW-PATH-DAG: [[TAG_B_s]] = !{[[TYPE_B:!.*]], [[TYPE_pointer]], i64 0, i64 8} 42 // 43 // NEW-PATH-DAG: [[TYPE_B]] = !{[[TYPE_char:!.*]], i64 8, !"_ZTS1B", [[TYPE_pointer]], i64 0, i64 8} 44 // NEW-PATH-DAG: [[TYPE_pointer]] = !{[[TYPE_char:!.*]], i64 8, !"any pointer"} 45 // NEW-PATH-DAG: [[TYPE_char]] = !{{{!.*}}, i64 1, !"omnipotent char"} 46