| // RUN: %clang_cc1 -triple=i686 -emit-llvm -o - %s | FileCheck %s |
| |
| |
| struct X; |
| typedef void (X::*memptr)(); |
| |
| struct A { |
| virtual memptr f(); |
| }; |
| |
| struct B { |
| virtual memptr f(); |
| }; |
| |
| struct C : A, B { |
| C(); |
| memptr f() override __attribute__((noinline)) { return nullptr; }; |
| }; |
| |
| C::C() {} |
| |
| // Make sure the member pointer is returned from the thunk via the return slot. |
| // Because of the tail call, the return value cannot be copied into a local |
| // alloca. (PR39901) |
| |
| // CHECK-LABEL: define linkonce_odr void @_ZThn4_N1C1fEv(ptr dead_on_unwind noalias writable sret({ i32, i32 }) align 4 %agg.result, ptr noundef %this) |
| // CHECK: tail call void @_ZN1C1fEv(ptr dead_on_unwind writable sret({ i32, i32 }) align 4 %agg.result |
