You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
1.7 KiB
32 lines
1.7 KiB
// Check the layout of the vtable for a normal class.
|
|
|
|
// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm -fexperimental-relative-c++-abi-vtables | FileCheck %s
|
|
|
|
// We should be emitting comdats for each of the virtual function RTTI proxies
|
|
// CHECK: $_ZTI1A.rtti_proxy = comdat any
|
|
|
|
// VTable contains offsets and references to the hidden symbols
|
|
// The vtable definition itself is private so we can take relative references to
|
|
// it. The vtable symbol will be exposed through a public alias.
|
|
// CHECK: @_ZTV1A.local = private unnamed_addr constant { [3 x i32] } { [3 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8* }** @_ZTI1A.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.A*)* dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [3 x i32] }, { [3 x i32] }* @_ZTV1A.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
|
|
// CHECK: @_ZTVN10__cxxabiv117__class_type_infoE = external global i8*
|
|
// CHECK: @_ZTS1A = constant [3 x i8] c"1A\00", align 1
|
|
// CHECK: @_ZTI1A = constant { i8*, i8* } { i8* getelementptr inbounds (i8, i8* bitcast (i8** @_ZTVN10__cxxabiv117__class_type_infoE to i8*), i32 8), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, align 8
|
|
|
|
// The rtti should be in a comdat
|
|
// CHECK: @_ZTI1A.rtti_proxy = hidden unnamed_addr constant { i8*, i8* }* @_ZTI1A, comdat
|
|
|
|
// The vtable symbol is exposed through an alias.
|
|
// @_ZTV1A = dso_local unnamed_addr alias { [3 x i32] }, { [3 x i32] }* @_ZTV1A.local
|
|
|
|
class A {
|
|
public:
|
|
virtual void foo();
|
|
};
|
|
|
|
void A::foo() {}
|
|
|
|
void A_foo(A *a) {
|
|
a->foo();
|
|
}
|