1 // Check the layout of the vtable for a normal class. 2 3 // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s 4 5 // We should be emitting comdats for each of the virtual function RTTI proxies 6 // CHECK: $_ZTI1A.rtti_proxy = comdat any 7 8 // VTable contains offsets and references to the hidden symbols 9 // The vtable definition itself is private so we can take relative references to 10 // it. The vtable symbol will be exposed through a public alias. 11 // CHECK: @_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 4 12 // CHECK: @_ZTI1A ={{.*}} constant { ptr, ptr } { ptr getelementptr inbounds (i8, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i32 8), ptr @_ZTS1A }, align 8 13 // CHECK: @_ZTVN10__cxxabiv117__class_type_infoE = external global [0 x ptr] 14 // CHECK: @_ZTS1A ={{.*}} constant [3 x i8] c"1A\00", align 1 15 16 // The rtti should be in a comdat 17 // CHECK: @_ZTI1A.rtti_proxy = {{.*}}comdat 18 19 // The vtable symbol is exposed through an alias. 20 // @_ZTV1A = dso_local unnamed_addr alias { [3 x i32] }, ptr @_ZTV1A.local 21 22 class A { 23 public: 24 virtual void foo(); 25 }; 26 27 void A::foo() {} 28 29 void A_foo(A *a) { 30 a->foo(); 31 } 32