24 lines · cpp
1// Check the layout of the vtable for a normal class.2// The Fuchsia relative vtables ABI will be hidden behind a flag for now as part3// of a soft incremental rollout. This ABI should only be used if the flag for4// it is passed on Fuchsia.5 6// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck --check-prefix=RELATIVE-ABI %s7// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -o - -emit-llvm -fno-experimental-relative-c++-abi-vtables | FileCheck --check-prefix=DEFAULT-ABI %s8 9// VTable contains offsets and references to the hidden symbols10// RELATIVE-ABI: @_ZTV1A.local = internal unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [3 x i32] }, ptr @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 411// RELATIVE-ABI: @_ZTV1A ={{.*}} unnamed_addr alias { [3 x i32] }, ptr @_ZTV1A.local12// DEFAULT-ABI: @_ZTV1A ={{.*}} unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1A, ptr @_ZN1A3fooEv] }, align 813 14class A {15public:16 virtual void foo();17};18 19void A::foo() {}20 21void A_foo(A *a) {22 a->foo();23}24