29 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \2// RUN: -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,OLD-PATH3// RUN: %clang_cc1 -triple x86_64-linux -O1 -disable-llvm-passes %s \4// RUN: -emit-llvm -new-struct-path-tbaa -o - | FileCheck %s -check-prefixes=CHECK,NEW-PATH5//6// Check that we generate correct TBAA information for lvalues constructed7// with use of casts.8 9struct V {10 unsigned n;11};12 13struct S {14 char bytes[4];15};16 17void foo(S *p) {18// CHECK-LABEL: _Z3fooP1S19// CHECK: store i32 5, {{.*}}, !tbaa [[TAG_V_n:!.*]]20 ((V*)p->bytes)->n = 5;21}22 23// OLD-PATH-DAG: [[TAG_V_n]] = !{[[TYPE_V:!.*]], [[TYPE_int:!.*]], i64 0}24// OLD-PATH-DAG: [[TYPE_V]] = !{!"_ZTS1V", !{{.*}}, i64 0}25// OLD-PATH-DAG: [[TYPE_int]] = !{!"int", !{{.*}}, i64 0}26// NEW-PATH-DAG: [[TAG_V_n]] = !{[[TYPE_V:!.*]], [[TYPE_int:!.*]], i64 0, i64 4}27// NEW-PATH-DAG: [[TYPE_V]] = !{[[TYPE_char:!.*]], i64 4, !"_ZTS1V", [[TYPE_int]], i64 0, i64 4}28// NEW-PATH-DAG: [[TYPE_int]] = !{[[TYPE_char]], i64 4, !"int"}29