102 lines
4.6 KiB
C++
102 lines
4.6 KiB
C++
// RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=i386-pc-win32 %s -o - | FileCheck %s
|
|
|
|
// In each test case, we have two member pointers whose thunks have the same
|
|
// vtable offset and same mangling, but their prototypes conflict. The
|
|
// arguments and return type may differ. Therefore, we have to bitcast the
|
|
// function prototype. Unfortunately, if the return types differ, LLVM's
|
|
// optimizers can get upset.
|
|
|
|
namespace num_params {
|
|
struct A { virtual void a(int); };
|
|
struct B { virtual void b(int, int); };
|
|
struct C : A, B {
|
|
virtual void a(int);
|
|
virtual void b(int, int);
|
|
};
|
|
void f(C *c) {
|
|
(c->*(&C::a))(0);
|
|
(c->*(&C::b))(0, 0);
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: define dso_local void @"?f@num_params@@YAXPAUC@1@@Z"(%"struct.num_params::C"* %c)
|
|
// CHECK: call x86_thiscallcc void bitcast (void (%"struct.num_params::C"*, ...)* @"??_9C@num_params@@$BA@AE" to void (%"struct.num_params::C"*, i32)*)(%"struct.num_params::C"* {{[^,]*}} %{{.*}}, i32 0)
|
|
// CHECK: call x86_thiscallcc void bitcast (void (%"struct.num_params::C"*, ...)* @"??_9C@num_params@@$BA@AE" to void (%"struct.num_params::C"*, i32, i32)*)(%"struct.num_params::C"* {{[^,]*}} %{{.*}}, i32 0, i32 0)
|
|
|
|
// CHECK-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@num_params@@$BA@AE"(%"struct.num_params::C"* %this, ...) {{.*}} comdat
|
|
// CHECK: musttail call x86_thiscallcc void (%"struct.num_params::C"*, ...) %{{.*}}(%"struct.num_params::C"* %{{.*}}, ...)
|
|
// CHECK-NEXT: ret void
|
|
|
|
namespace i64_return {
|
|
struct A { virtual int a(); };
|
|
struct B { virtual long long b(); };
|
|
struct C : A, B {
|
|
virtual int a();
|
|
virtual long long b();
|
|
};
|
|
long long f(C *c) {
|
|
int x = (c->*(&C::a))();
|
|
long long y = (c->*(&C::b))();
|
|
return x + y;
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: define dso_local i64 @"?f@i64_return@@YA_JPAUC@1@@Z"(%"struct.i64_return::C"* %c)
|
|
// CHECK: call x86_thiscallcc i32 bitcast (void (%"struct.i64_return::C"*, ...)* @"??_9C@i64_return@@$BA@AE" to i32 (%"struct.i64_return::C"*)*)(%"struct.i64_return::C"* {{[^,]*}} %{{.*}})
|
|
// CHECK: call x86_thiscallcc i64 bitcast (void (%"struct.i64_return::C"*, ...)* @"??_9C@i64_return@@$BA@AE" to i64 (%"struct.i64_return::C"*)*)(%"struct.i64_return::C"* {{[^,]*}} %{{.*}})
|
|
|
|
// CHECK-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@i64_return@@$BA@AE"(%"struct.i64_return::C"* %this, ...) {{.*}} comdat
|
|
// CHECK: musttail call x86_thiscallcc void (%"struct.i64_return::C"*, ...) %{{.*}}(%"struct.i64_return::C"* %{{.*}}, ...)
|
|
// CHECK-NEXT: ret void
|
|
|
|
namespace sret {
|
|
struct Big { int big[32]; };
|
|
struct A { virtual int a(); };
|
|
struct B { virtual Big b(); };
|
|
struct C : A, B {
|
|
virtual int a();
|
|
virtual Big b();
|
|
};
|
|
void f(C *c) {
|
|
(c->*(&C::a))();
|
|
Big b((c->*(&C::b))());
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: define dso_local void @"?f@sret@@YAXPAUC@1@@Z"(%"struct.sret::C"* %c)
|
|
// CHECK: call x86_thiscallcc i32 bitcast (void (%"struct.sret::C"*, ...)* @"??_9C@sret@@$BA@AE" to i32 (%"struct.sret::C"*)*)(%"struct.sret::C"* {{[^,]*}} %{{.*}})
|
|
// CHECK: call x86_thiscallcc void bitcast (void (%"struct.sret::C"*, ...)* @"??_9C@sret@@$BA@AE" to void (%"struct.sret::C"*, %"struct.sret::Big"*)*)(%"struct.sret::C"* {{[^,]*}} %{{.*}}, %"struct.sret::Big"* sret(%"struct.sret::Big") align 4 %{{.*}})
|
|
|
|
// CHECK-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@sret@@$BA@AE"(%"struct.sret::C"* %this, ...) {{.*}} comdat
|
|
// CHECK: musttail call x86_thiscallcc void (%"struct.sret::C"*, ...) %{{.*}}(%"struct.sret::C"* %{{.*}}, ...)
|
|
// CHECK-NEXT: ret void
|
|
|
|
namespace cdecl_inalloca {
|
|
// Fairly evil, since now we end up doing an inalloca-style call through a
|
|
// thunk that doesn't use inalloca. Hopefully the stacks line up?
|
|
struct Big {
|
|
Big();
|
|
~Big();
|
|
int big[32];
|
|
};
|
|
struct A { virtual void __cdecl a(); };
|
|
struct B { virtual void __cdecl b(Big); };
|
|
struct C : A, B {
|
|
virtual void __cdecl a();
|
|
virtual void __cdecl b(Big);
|
|
};
|
|
void f(C *c) {
|
|
Big b;
|
|
(c->*(&C::a))();
|
|
((c->*(&C::b))(b));
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: define dso_local void @"?f@cdecl_inalloca@@YAXPAUC@1@@Z"(%"struct.cdecl_inalloca::C"* %c)
|
|
// CHECK: call void bitcast (void (%"struct.cdecl_inalloca::C"*, ...)* @"??_9C@cdecl_inalloca@@$BA@AA" to void (%"struct.cdecl_inalloca::C"*)*)(%"struct.cdecl_inalloca::C"* {{[^,]*}} %{{.*}})
|
|
// CHECK: call void bitcast (void (%"struct.cdecl_inalloca::C"*, ...)* @"??_9C@cdecl_inalloca@@$BA@AA" to void (<{ %"struct.cdecl_inalloca::C"*, %"struct.cdecl_inalloca::Big" }>*)*)(<{ %"struct.cdecl_inalloca::C"*, %"struct.cdecl_inalloca::Big" }>* inalloca %{{.*}})
|
|
|
|
// CHECK-LABEL: define linkonce_odr void @"??_9C@cdecl_inalloca@@$BA@AA"(%"struct.cdecl_inalloca::C"* %this, ...) {{.*}} comdat
|
|
// CHECK: musttail call void (%"struct.cdecl_inalloca::C"*, ...) %{{.*}}(%"struct.cdecl_inalloca::C"* %{{.*}}, ...)
|
|
// CHECK-NEXT: ret void
|