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// RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=i386-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK32
// RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm -triple=x86_64-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK64
struct S {
int x, y, z;
};
// U is not trivially copyable, and requires inalloca to pass by value.
struct U {
int u;
U();
~U();
U(const U &);
};
struct B;
struct C {
virtual void foo();
virtual int bar(int, double);
virtual S baz(int);
virtual S qux(U);
virtual void thud(...);
virtual void (B::*plugh())();
};
namespace {
struct D {
virtual void foo();
};
}
void f() {
void (C::*ptr)();
ptr = &C::foo;
ptr = &C::foo; // Don't crash trying to define the thunk twice :)
int (C::*ptr2)(int, double);
ptr2 = &C::bar;
S (C::*ptr3)(int);
ptr3 = &C::baz;
void (D::*ptr4)();
ptr4 = &D::foo;
S (C::*ptr5)(U);
ptr5 = &C::qux;
void (C::*ptr6)(...);
ptr6 = &C::thud;
auto ptr7 = &C::plugh;
// CHECK32-LABEL: define dso_local void @"?f@@YAXXZ"()
// CHECK32: store ptr @"??_9C@@$BA@AE", ptr %ptr
// CHECK32: store ptr @"??_9C@@$B3AE", ptr %ptr2
// CHECK32: store ptr @"??_9C@@$B7AE", ptr %ptr3
// CHECK32: store ptr @"??_9D@?A0x{{[^@]*}}@@$BA@AE", ptr %ptr4
// CHECK32: }
//
// CHECK64-LABEL: define dso_local void @"?f@@YAXXZ"()
// CHECK64: store ptr @"??_9C@@$BA@AA", ptr %ptr
// CHECK64: store ptr @"??_9C@@$B7AA", ptr %ptr2
// CHECK64: store ptr @"??_9C@@$BBA@AA", ptr %ptr3
// CHECK64: store ptr @"??_9D@?A0x{{[^@]*}}@@$BA@AA", ptr %ptr
// CHECK64: }
}
// Thunk for calling the 1st virtual function in C with no parameters.
// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BA@AE"(ptr noundef %this, ...)
// CHECK32: #[[ATTR:[0-9]+]]
// CHECK32-NOT: unnamed_addr
// CHECK32: comdat
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 0
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32-NEXT: ret void
// CHECK32: }
//
// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BA@AA"(ptr noundef %this, ...)
// CHECK64: #[[ATTR:[0-9]+]]
// CHECK64-NOT: unnamed_addr
// CHECK64: comdat
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 0
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64-NEXT: ret void
// CHECK64: }
// Thunk for calling the 2nd virtual function in C, taking int and double as parameters, returning int.
// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B3AE"(ptr noundef %this, ...)
// CHECK32: #[[ATTR]] comdat
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 1
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32-NEXT: ret void
// CHECK32: }
//
// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$B7AA"(ptr noundef %this, ...)
// CHECK64: #[[ATTR]] comdat
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 1
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64-NEXT: ret void
// CHECK64: }
// Thunk for calling the 3rd virtual function in C, taking an int parameter, returning a struct.
// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$B7AE"(ptr noundef %this, ...)
// CHECK32: #[[ATTR]] comdat
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 2
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32-NEXT: ret void
// CHECK32: }
//
// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(ptr noundef %this, ...)
// CHECK64: #[[ATTR]] comdat
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 2
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64-NEXT: ret void
// CHECK64: }
// Thunk for calling the virtual function in internal class D.
// CHECK32-LABEL: define internal x86_thiscallcc void @"??_9D@?A0x{{[^@]*}}@@$BA@AE"(ptr noundef %this, ...)
// CHECK32: #[[ATTR]]
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 0
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32-NEXT: ret void
// CHECK32: }
//
// CHECK64-LABEL: define internal void @"??_9D@?A0x{{[^@]*}}@@$BA@AA"(ptr noundef %this, ...)
// CHECK64: #[[ATTR]]
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 0
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64-NEXT: ret void
// CHECK64: }
// Thunk for calling the fourth virtual function in C, taking a struct parameter
// and returning a struct.
// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"??_9C@@$BM@AE"(ptr noundef %this, ...) {{.*}} comdat
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 3
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32-NEXT: ret void
// CHECK32: }
//
// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BBI@AA"(ptr noundef %this, ...) {{.*}} comdat
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 3
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64: ret void
// CHECK64: }
// Thunk for calling the fifth virtual function in C which uses the __cdecl calling convention.
// CHECK32-LABEL: define linkonce_odr void @"??_9C@@$BBA@AA"(ptr noundef %this, ...) {{.*}} comdat align 2 {
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 4
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32: ret void
// CHECK32: }
//
// CHECK64-LABEL: define linkonce_odr void @"??_9C@@$BCA@AA"(ptr noundef %this, ...) {{.*}} comdat align 2 {
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 4
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64: ret void
// CHECK64: }
// CHECK32: define linkonce_odr x86_thiscallcc void @"??_9C@@$BBE@AE"(ptr noundef %this, ...) {{.*}} comdat align 2 {
// CHECK32: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 5
// CHECK32: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK32: musttail call x86_thiscallcc void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK32: ret void
// CHECK32: }
// CHECK64: define linkonce_odr void @"??_9C@@$BCI@AA"(ptr noundef %this, ...) {{.*}} comdat align 2 {
// CHECK64: [[VPTR:%.*]] = getelementptr inbounds ptr, ptr %{{.*}}, i64 5
// CHECK64: [[CALLEE:%.*]] = load ptr, ptr [[VPTR]]
// CHECK64: musttail call void (ptr, ...) [[CALLEE]](ptr noundef %{{.*}}, ...)
// CHECK64: ret void
// CHECK64: }
// CHECK32: #[[ATTR]] = {{{.*}}"thunk"{{.*}}}
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