forked from OSchip/llvm-project
350 lines
8.3 KiB
C++
350 lines
8.3 KiB
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -std=c++11 %s -emit-llvm -o - | FileCheck %s
|
|
|
|
namespace Test1 {
|
|
struct A {
|
|
virtual int f() final;
|
|
};
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test11fEPNS_1AE
|
|
int f(A *a) {
|
|
// CHECK: call i32 @_ZN5Test11A1fEv
|
|
return a->f();
|
|
}
|
|
}
|
|
|
|
namespace Test2 {
|
|
struct A final {
|
|
virtual int f();
|
|
};
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test21fEPNS_1AE
|
|
int f(A *a) {
|
|
// CHECK: call i32 @_ZN5Test21A1fEv
|
|
return a->f();
|
|
}
|
|
}
|
|
|
|
namespace Test2a {
|
|
struct A {
|
|
virtual ~A() final {}
|
|
virtual int f();
|
|
};
|
|
|
|
// CHECK-LABEL: define i32 @_ZN6Test2a1fEPNS_1AE
|
|
int f(A *a) {
|
|
// CHECK: call i32 @_ZN6Test2a1A1fEv
|
|
return a->f();
|
|
}
|
|
}
|
|
|
|
|
|
namespace Test3 {
|
|
struct A {
|
|
virtual int f(); };
|
|
|
|
struct B final : A { };
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test31fEPNS_1BE
|
|
int f(B *b) {
|
|
// CHECK: call i32 @_ZN5Test31A1fEv
|
|
return b->f();
|
|
}
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test31fERNS_1BE
|
|
int f(B &b) {
|
|
// CHECK: call i32 @_ZN5Test31A1fEv
|
|
return b.f();
|
|
}
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test31fEPv
|
|
int f(void *v) {
|
|
// CHECK: call i32 @_ZN5Test31A1fEv
|
|
return static_cast<B*>(v)->f();
|
|
}
|
|
}
|
|
|
|
namespace Test4 {
|
|
struct A {
|
|
virtual void f();
|
|
virtual int operator-();
|
|
};
|
|
|
|
struct B final : A {
|
|
virtual void f();
|
|
virtual int operator-();
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZN5Test41fEPNS_1BE
|
|
void f(B* d) {
|
|
// CHECK: call void @_ZN5Test41B1fEv
|
|
static_cast<A*>(d)->f();
|
|
// CHECK: call i32 @_ZN5Test41BngEv
|
|
-static_cast<A&>(*d);
|
|
}
|
|
}
|
|
|
|
namespace Test5 {
|
|
struct A {
|
|
virtual void f();
|
|
virtual int operator-();
|
|
};
|
|
|
|
struct B : A {
|
|
virtual void f();
|
|
virtual int operator-();
|
|
};
|
|
|
|
struct C final : B {
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZN5Test51fEPNS_1CE
|
|
void f(C* d) {
|
|
// FIXME: It should be possible to devirtualize this case, but that is
|
|
// not implemented yet.
|
|
// CHECK: getelementptr
|
|
// CHECK-NEXT: %[[FUNC:.*]] = load
|
|
// CHECK-NEXT: call void %[[FUNC]]
|
|
static_cast<A*>(d)->f();
|
|
}
|
|
// CHECK-LABEL: define void @_ZN5Test53fopEPNS_1CE
|
|
void fop(C* d) {
|
|
// FIXME: It should be possible to devirtualize this case, but that is
|
|
// not implemented yet.
|
|
// CHECK: getelementptr
|
|
// CHECK-NEXT: %[[FUNC:.*]] = load
|
|
// CHECK-NEXT: call i32 %[[FUNC]]
|
|
-static_cast<A&>(*d);
|
|
}
|
|
}
|
|
|
|
namespace Test6 {
|
|
struct A {
|
|
virtual ~A();
|
|
};
|
|
|
|
struct B : public A {
|
|
virtual ~B();
|
|
};
|
|
|
|
struct C {
|
|
virtual ~C();
|
|
};
|
|
|
|
struct D final : public C, public B {
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZN5Test61fEPNS_1DE
|
|
void f(D* d) {
|
|
// CHECK: call void @_ZN5Test61DD1Ev
|
|
static_cast<A*>(d)->~A();
|
|
}
|
|
}
|
|
|
|
namespace Test7 {
|
|
struct foo {
|
|
virtual void g() {}
|
|
};
|
|
|
|
struct bar {
|
|
virtual int f() { return 0; }
|
|
};
|
|
|
|
struct zed final : public foo, public bar {
|
|
int z;
|
|
virtual int f() {return z;}
|
|
};
|
|
|
|
// CHECK-LABEL: define i32 @_ZN5Test71fEPNS_3zedE
|
|
int f(zed *z) {
|
|
// CHECK: alloca
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: load
|
|
// CHECK-NEXT: call i32 @_ZN5Test73zed1fEv
|
|
// CHECK-NEXT: ret
|
|
return static_cast<bar*>(z)->f();
|
|
}
|
|
}
|
|
|
|
namespace Test8 {
|
|
struct A { virtual ~A() {} };
|
|
struct B {
|
|
int b;
|
|
virtual int foo() { return b; }
|
|
};
|
|
struct C final : A, B { };
|
|
// CHECK-LABEL: define i32 @_ZN5Test84testEPNS_1CE
|
|
int test(C *c) {
|
|
// CHECK: %[[THIS:.*]] = phi
|
|
// CHECK-NEXT: call i32 @_ZN5Test81B3fooEv(%"struct.Test8::B"* {{[^,]*}} %[[THIS]])
|
|
return static_cast<B*>(c)->foo();
|
|
}
|
|
}
|
|
|
|
namespace Test9 {
|
|
struct A {
|
|
int a;
|
|
};
|
|
struct B {
|
|
int b;
|
|
};
|
|
struct C : public B, public A {
|
|
};
|
|
struct RA {
|
|
virtual A *f() {
|
|
return 0;
|
|
}
|
|
virtual A *operator-() {
|
|
return 0;
|
|
}
|
|
};
|
|
struct RC final : public RA {
|
|
virtual C *f() {
|
|
C *x = new C();
|
|
x->a = 1;
|
|
x->b = 2;
|
|
return x;
|
|
}
|
|
virtual C *operator-() {
|
|
C *x = new C();
|
|
x->a = 1;
|
|
x->b = 2;
|
|
return x;
|
|
}
|
|
};
|
|
// CHECK: define {{.*}} @_ZN5Test91fEPNS_2RCE
|
|
A *f(RC *x) {
|
|
// FIXME: It should be possible to devirtualize this case, but that is
|
|
// not implemented yet.
|
|
// CHECK: load
|
|
// CHECK: bitcast
|
|
// CHECK: [[F_PTR_RA:%.+]] = bitcast
|
|
// CHECK: [[VTABLE:%.+]] = load {{.+}} [[F_PTR_RA]]
|
|
// CHECK: [[VFN:%.+]] = getelementptr inbounds {{.+}} [[VTABLE]], i{{[0-9]+}} 0
|
|
// CHECK-NEXT: %[[FUNC:.*]] = load {{.+}} [[VFN]]
|
|
// CHECK-NEXT: = call {{.*}} %[[FUNC]]
|
|
return static_cast<RA*>(x)->f();
|
|
}
|
|
// CHECK: define {{.*}} @_ZN5Test93fopEPNS_2RCE
|
|
A *fop(RC *x) {
|
|
// FIXME: It should be possible to devirtualize this case, but that is
|
|
// not implemented yet.
|
|
// CHECK: load
|
|
// CHECK: bitcast
|
|
// CHECK: [[F_PTR_RA:%.+]] = bitcast
|
|
// CHECK: [[VTABLE:%.+]] = load {{.+}} [[F_PTR_RA]]
|
|
// CHECK: [[VFN:%.+]] = getelementptr inbounds {{.+}} [[VTABLE]], i{{[0-9]+}} 1
|
|
// CHECK-NEXT: %[[FUNC:.*]] = load {{.+}} [[VFN]]
|
|
// CHECK-NEXT: = call {{.*}} %[[FUNC]]
|
|
return -static_cast<RA&>(*x);
|
|
}
|
|
}
|
|
|
|
namespace Test10 {
|
|
struct A {
|
|
virtual int f();
|
|
};
|
|
|
|
struct B : A {
|
|
int f() final;
|
|
};
|
|
|
|
// CHECK-LABEL: define i32 @_ZN6Test101fEPNS_1BE
|
|
int f(B *b) {
|
|
// CHECK: call i32 @_ZN6Test101B1fEv
|
|
return static_cast<A *>(b)->f();
|
|
}
|
|
}
|
|
|
|
namespace TestVBase {
|
|
struct A { virtual void f(); };
|
|
struct B : virtual A {};
|
|
struct C : virtual A { void f() override; };
|
|
|
|
extern struct BC final : B, C {} &bc;
|
|
extern struct BCusingA final : B, C { using A::f; } &bc_using_a;
|
|
extern struct BCusingB final : B, C { using B::f; } &bc_using_b;
|
|
extern struct BCusingC final : B, C { using C::f; } &bc_using_c;
|
|
|
|
extern struct CB final : C, B {} &cb;
|
|
extern struct CBusingA final : C, B { using A::f; } &cb_using_a;
|
|
extern struct CBusingB final : C, B { using B::f; } &cb_using_b;
|
|
extern struct CBusingC final : C, B { using C::f; } &cb_using_c;
|
|
|
|
// CHECK-LABEL: @_ZN9TestVBase4testEv(
|
|
void test() {
|
|
// FIXME: The 'using A' case can be devirtualized to call A's virtual
|
|
// adjustment thunk for C::f.
|
|
// FIXME: The 'using B' case can be devirtualized, but requires us to emit
|
|
// a derived-to-base or base-to-derived conversion as part of
|
|
// devirtualization.
|
|
|
|
// CHECK: call void @_ZN9TestVBase1C1fEv(
|
|
bc.f();
|
|
// CHECK: call void %
|
|
bc_using_a.f();
|
|
// CHECK: call void %
|
|
bc_using_b.f();
|
|
// CHECK: call void @_ZN9TestVBase1C1fEv(
|
|
bc_using_c.f();
|
|
|
|
// CHECK: call void @_ZN9TestVBase1C1fEv(
|
|
cb.f();
|
|
// CHECK: call void %
|
|
cb_using_a.f();
|
|
// CHECK: call void %
|
|
cb_using_b.f();
|
|
// CHECK: call void @_ZN9TestVBase1C1fEv(
|
|
cb_using_c.f();
|
|
}
|
|
}
|
|
|
|
namespace Test11 {
|
|
// Check that the definitions of Derived's operators are emitted.
|
|
|
|
// CHECK-LABEL: define linkonce_odr void @_ZN6Test111SIiE4foo1Ev(
|
|
// CHECK: call void @_ZN6Test111SIiE7DerivedclEv(
|
|
// CHECK: call zeroext i1 @_ZN6Test111SIiE7DerivedeqERKNS_4BaseE(
|
|
// CHECK: call zeroext i1 @_ZN6Test111SIiE7DerivedntEv(
|
|
// CHECK: call nonnull align 4 dereferenceable(4) %"class.Test11::Base"* @_ZN6Test111SIiE7DerivedixEi(
|
|
// CHECK: define linkonce_odr void @_ZN6Test111SIiE7DerivedclEv(
|
|
// CHECK: define linkonce_odr zeroext i1 @_ZN6Test111SIiE7DerivedeqERKNS_4BaseE(
|
|
// CHECK: define linkonce_odr zeroext i1 @_ZN6Test111SIiE7DerivedntEv(
|
|
// CHECK: define linkonce_odr nonnull align 4 dereferenceable(4) %"class.Test11::Base"* @_ZN6Test111SIiE7DerivedixEi(
|
|
class Base {
|
|
public:
|
|
virtual void operator()() {}
|
|
virtual bool operator==(const Base &other) { return false; }
|
|
virtual bool operator!() { return false; }
|
|
virtual Base &operator[](int i) { return *this; }
|
|
};
|
|
|
|
template<class T>
|
|
struct S {
|
|
class Derived final : public Base {
|
|
public:
|
|
void operator()() override {}
|
|
bool operator==(const Base &other) override { return true; }
|
|
bool operator!() override { return true; }
|
|
Base &operator[](int i) override { return *this; }
|
|
};
|
|
|
|
Derived *ptr = nullptr, *ptr2 = nullptr;
|
|
|
|
void foo1() {
|
|
if (ptr && ptr2) {
|
|
// These calls get devirtualized. Linkage fails if the definitions of
|
|
// the called functions are not emitted.
|
|
(*ptr)();
|
|
(void)(*ptr == *ptr2);
|
|
(void)(!(*ptr));
|
|
(void)((*ptr)[1]);
|
|
}
|
|
}
|
|
};
|
|
|
|
void foo2() {
|
|
S<int> *s = new S<int>;
|
|
s->foo1();
|
|
}
|
|
}
|