forked from OSchip/llvm-project
375 lines
7.1 KiB
C++
375 lines
7.1 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-pc-linux-gnu -munwind-tables -emit-llvm -o - | FileCheck %s
|
|
// RUN: %clang_cc1 %s -triple=x86_64-pc-linux-gnu -munwind-tables -emit-llvm -o - -O1 -disable-llvm-optzns | FileCheck %s
|
|
|
|
namespace Test1 {
|
|
|
|
// Check that we emit a non-virtual thunk for C::f.
|
|
|
|
struct A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct B {
|
|
virtual void f();
|
|
};
|
|
|
|
struct C : A, B {
|
|
virtual void c();
|
|
|
|
virtual void f();
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZThn8_N5Test11C1fEv(
|
|
void C::f() { }
|
|
|
|
}
|
|
|
|
namespace Test2 {
|
|
|
|
// Check that we emit a thunk for B::f since it's overriding a virtual base.
|
|
|
|
struct A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct B : virtual A {
|
|
virtual void b();
|
|
virtual void f();
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZTv0_n24_N5Test21B1fEv(
|
|
void B::f() { }
|
|
|
|
}
|
|
|
|
namespace Test3 {
|
|
|
|
// Check that we emit a covariant thunk for B::f.
|
|
|
|
struct V1 { };
|
|
struct V2 : virtual V1 { };
|
|
|
|
struct A {
|
|
virtual V1 *f();
|
|
};
|
|
|
|
struct B : A {
|
|
virtual void b();
|
|
|
|
virtual V2 *f();
|
|
};
|
|
|
|
// CHECK: define %{{.*}}* @_ZTch0_v0_n24_N5Test31B1fEv(
|
|
V2 *B::f() { return 0; }
|
|
|
|
}
|
|
|
|
namespace Test4 {
|
|
|
|
// Check that the thunk for 'C::f' has the same visibility as the function itself.
|
|
|
|
struct A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct B {
|
|
virtual void f();
|
|
};
|
|
|
|
struct __attribute__((visibility("protected"))) C : A, B {
|
|
virtual void c();
|
|
|
|
virtual void f();
|
|
};
|
|
|
|
// CHECK-LABEL: define protected void @_ZThn8_N5Test41C1fEv(
|
|
void C::f() { }
|
|
|
|
}
|
|
|
|
// Check that the thunk gets internal linkage.
|
|
namespace Test4B {
|
|
struct A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct B {
|
|
virtual void f();
|
|
};
|
|
|
|
namespace {
|
|
struct C : A, B {
|
|
virtual void c();
|
|
virtual void f();
|
|
};
|
|
}
|
|
void C::c() {}
|
|
void C::f() {}
|
|
|
|
// Force C::f to be used.
|
|
void f() {
|
|
C c;
|
|
c.f();
|
|
}
|
|
}
|
|
|
|
namespace Test5 {
|
|
|
|
// Check that the thunk for 'B::f' gets the same linkage as the function itself.
|
|
struct A {
|
|
virtual void f();
|
|
};
|
|
|
|
struct B : virtual A {
|
|
virtual void f() { }
|
|
};
|
|
|
|
void f(B b) {
|
|
b.f();
|
|
}
|
|
}
|
|
|
|
namespace Test6 {
|
|
struct X {
|
|
X();
|
|
X(const X&);
|
|
X &operator=(const X&);
|
|
~X();
|
|
};
|
|
|
|
struct P {
|
|
P();
|
|
P(const P&);
|
|
~P();
|
|
X first;
|
|
X second;
|
|
};
|
|
|
|
P getP();
|
|
|
|
struct Base1 {
|
|
int i;
|
|
|
|
virtual X f() { return X(); }
|
|
};
|
|
|
|
struct Base2 {
|
|
float real;
|
|
|
|
virtual X f() { return X(); }
|
|
};
|
|
|
|
struct Thunks : Base1, Base2 {
|
|
long l;
|
|
|
|
virtual X f();
|
|
};
|
|
|
|
// CHECK-LABEL: define void @_ZThn16_N5Test66Thunks1fEv
|
|
// CHECK-NOT: memcpy
|
|
// CHECK: {{call void @_ZN5Test66Thunks1fEv.*sret}}
|
|
// CHECK: ret void
|
|
X Thunks::f() { return X(); }
|
|
}
|
|
|
|
namespace Test7 {
|
|
// PR7188
|
|
struct X {
|
|
X();
|
|
X(const X&);
|
|
X &operator=(const X&);
|
|
~X();
|
|
};
|
|
|
|
struct Small { short s; };
|
|
struct Large {
|
|
char array[1024];
|
|
};
|
|
|
|
class A {
|
|
protected:
|
|
virtual void foo() = 0;
|
|
};
|
|
|
|
class B : public A {
|
|
protected:
|
|
virtual void bar() = 0;
|
|
};
|
|
|
|
class C : public A {
|
|
protected:
|
|
virtual void baz(X, X&, _Complex float, Small, Small&, Large) = 0;
|
|
};
|
|
|
|
class D : public B,
|
|
public C {
|
|
|
|
void foo() {}
|
|
void bar() {}
|
|
void baz(X, X&, _Complex float, Small, Small&, Large);
|
|
};
|
|
|
|
void D::baz(X, X&, _Complex float, Small, Small&, Large) { }
|
|
|
|
// CHECK-LABEL: define void @_ZThn8_N5Test71D3bazENS_1XERS1_CfNS_5SmallERS4_NS_5LargeE(
|
|
// CHECK-NOT: memcpy
|
|
// CHECK: ret void
|
|
void testD() { D d; }
|
|
}
|
|
|
|
namespace Test8 {
|
|
struct NonPOD { ~NonPOD(); int x, y, z; };
|
|
struct A { virtual void foo(); };
|
|
struct B { virtual void bar(NonPOD); };
|
|
struct C : A, B { virtual void bar(NonPOD); static void helper(NonPOD); };
|
|
|
|
// CHECK: define void @_ZN5Test81C6helperENS_6NonPODE([[NONPODTYPE:%.*]]*
|
|
void C::helper(NonPOD var) {}
|
|
|
|
// CHECK-LABEL: define void @_ZThn8_N5Test81C3barENS_6NonPODE(
|
|
// CHECK-NOT: load [[NONPODTYPE]], [[NONPODTYPE]]*
|
|
// CHECK-NOT: memcpy
|
|
// CHECK: ret void
|
|
void C::bar(NonPOD var) {}
|
|
}
|
|
|
|
// PR7241: Emitting thunks for a method shouldn't require the vtable for
|
|
// that class to be emitted.
|
|
namespace Test9 {
|
|
struct A { virtual ~A() { } };
|
|
struct B : A { virtual void test() const {} };
|
|
struct C : B { C(); ~C(); };
|
|
struct D : C { D() {} };
|
|
void test() {
|
|
D d;
|
|
}
|
|
}
|
|
|
|
namespace Test10 {
|
|
struct A { virtual void foo(); };
|
|
struct B { virtual void foo(); };
|
|
struct C : A, B { void foo() {} };
|
|
|
|
// Test later.
|
|
void test() {
|
|
C c;
|
|
}
|
|
}
|
|
|
|
// PR7611
|
|
namespace Test11 {
|
|
struct A { virtual A* f(); };
|
|
struct B : virtual A { virtual A* f(); };
|
|
struct C : B { virtual C* f(); };
|
|
C* C::f() { return 0; }
|
|
|
|
// C::f itself.
|
|
// CHECK: define {{.*}} @_ZN6Test111C1fEv(
|
|
|
|
// The this-adjustment and return-adjustment thunk required when
|
|
// C::f appears in a vtable where A is at a nonzero offset from C.
|
|
// CHECK: define {{.*}} @_ZTcv0_n24_v0_n32_N6Test111C1fEv(
|
|
|
|
// The return-adjustment thunk required when C::f appears in a vtable
|
|
// where A is at a zero offset from C.
|
|
// CHECK: define {{.*}} @_ZTch0_v0_n32_N6Test111C1fEv(
|
|
}
|
|
|
|
// Varargs thunk test.
|
|
namespace Test12 {
|
|
struct A {
|
|
virtual A* f(int x, ...);
|
|
};
|
|
struct B {
|
|
virtual B* f(int x, ...);
|
|
};
|
|
struct C : A, B {
|
|
virtual void c();
|
|
virtual C* f(int x, ...);
|
|
};
|
|
C* C::f(int x, ...) { return this; }
|
|
|
|
// C::f
|
|
// CHECK: define {{.*}} @_ZN6Test121C1fEiz
|
|
|
|
// Varargs thunk; check that both the this and covariant adjustments
|
|
// are generated.
|
|
// CHECK: define {{.*}} @_ZTchn8_h8_N6Test121C1fEiz
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 -8
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 8
|
|
}
|
|
|
|
// PR13832
|
|
namespace Test13 {
|
|
struct B1 {
|
|
virtual B1 &foo1();
|
|
};
|
|
struct Pad1 {
|
|
virtual ~Pad1();
|
|
};
|
|
struct Proxy1 : Pad1, B1 {
|
|
virtual ~Proxy1();
|
|
};
|
|
struct D : virtual Proxy1 {
|
|
virtual ~D();
|
|
virtual D &foo1();
|
|
};
|
|
D& D::foo1() {
|
|
return *this;
|
|
}
|
|
// CHECK: define {{.*}} @_ZTcvn8_n32_v8_n24_N6Test131D4foo1Ev
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 -8
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 -32
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 -24
|
|
// CHECK: getelementptr inbounds i8, i8* {{.*}}, i64 8
|
|
// CHECK: ret %"struct.Test13::D"*
|
|
}
|
|
|
|
namespace Test14 {
|
|
class A {
|
|
virtual void f();
|
|
};
|
|
class B {
|
|
virtual void f();
|
|
};
|
|
class C : public A, public B {
|
|
virtual void f();
|
|
};
|
|
void C::f() {
|
|
}
|
|
// CHECK: define void @_ZThn8_N6Test141C1fEv({{.*}}) unnamed_addr [[NUW:#[0-9]+]]
|
|
}
|
|
|
|
// Varargs non-covariant thunk test.
|
|
// PR18098
|
|
namespace Test15 {
|
|
struct A {
|
|
virtual ~A();
|
|
};
|
|
struct B {
|
|
virtual void f(int x, ...);
|
|
};
|
|
struct C : A, B {
|
|
virtual void c();
|
|
virtual void f(int x, ...);
|
|
};
|
|
void C::c() {}
|
|
|
|
// C::c
|
|
// CHECK: declare void @_ZN6Test151C1fEiz
|
|
// non-virtual thunk to C::f
|
|
// CHECK: declare void @_ZThn8_N6Test151C1fEiz
|
|
}
|
|
|
|
/**** The following has to go at the end of the file ****/
|
|
|
|
// This is from Test5:
|
|
// CHECK-LABEL: define internal void @_ZThn8_N6Test4B12_GLOBAL__N_11C1fEv(
|
|
// CHECK-LABEL: define linkonce_odr void @_ZTv0_n24_N5Test51B1fEv
|
|
|
|
// This is from Test10:
|
|
// CHECK-LABEL: define linkonce_odr void @_ZN6Test101C3fooEv
|
|
// CHECK-LABEL: define linkonce_odr void @_ZThn8_N6Test101C3fooEv
|
|
|
|
// CHECK: attributes [[NUW]] = { nounwind uwtable{{.*}} }
|