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// RUN: %clang_cc1 -fno-rtti -emit-llvm %s -o - -triple=i386-pc-win32 >%t 2>&1
// RUN: FileCheck --check-prefix=MANGLING %s < %t
// RUN: FileCheck --check-prefix=XMANGLING %s < %t
// RUN: FileCheck --check-prefix=CODEGEN %s < %t
// RUN: %clang_cc1 -fno-rtti -emit-llvm %s -o - -triple=x86_64-pc-win32 2>&1 | FileCheck --check-prefix=MANGLING-X64 %s
void foo(void *);
struct A {
virtual ~A();
virtual void public_f();
// Make sure we don't emit unneeded thunks:
// XMANGLING-NOT: @"\01?public_f@A@@QAEXXZ"
protected:
virtual void protected_f();
private:
virtual void private_f();
};
struct B {
virtual ~B();
virtual void public_f();
protected:
virtual void protected_f();
private:
virtual void private_f();
};
struct C : A, B {
C();
virtual ~C();
// MANGLING-DAG: @"\01??1C@@UAE@XZ"
// MANGLING-DAG: @"\01??_GC@@UAEPAXI@Z"
// MANGLING-DAG: @"\01??_EC@@W3AEPAXI@Z"
// MANGLING-X64-DAG: @"\01??1C@@UEAA@XZ"
// MANGLING-X64-DAG: @"\01??_GC@@UEAAPEAXI@Z"
// MANGLING-X64-DAG: @"\01??_EC@@W7EAAPEAXI@Z"
// Overrides public_f() of two subobjects with distinct vfptrs, thus needs a thunk.
virtual void public_f();
// MANGLING-DAG: @"\01?public_f@C@@UAEXXZ"
// MANGLING-DAG: @"\01?public_f@C@@W3AEXXZ"
// MANGLING-X64-DAG: @"\01?public_f@C@@UEAAXXZ"
// MANGLING-X64-DAG: @"\01?public_f@C@@W7EAAXXZ"
protected:
virtual void protected_f();
// MANGLING-DAG: @"\01?protected_f@C@@MAEXXZ"
// MANGLING-DAG: @"\01?protected_f@C@@O3AEXXZ"
// MANGLING-X64-DAG: @"\01?protected_f@C@@MEAAXXZ"
// MANGLING-X64-DAG: @"\01?protected_f@C@@O7EAAXXZ"
private:
virtual void private_f();
// MANGLING-DAG: @"\01?private_f@C@@EAEXXZ"
// MANGLING-DAG: @"\01?private_f@C@@G3AEXXZ"
// MANGLING-X64-DAG: @"\01?private_f@C@@EEAAXXZ"
// MANGLING-X64-DAG: @"\01?private_f@C@@G7EAAXXZ"
};
C::C() {} // Emits vftable and forces thunk generation.
// CODEGEN-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_EC@@W3AEPAXI@Z"(%struct.C* %this, i32 %should_call_delete)
// CODEGEN: getelementptr i8* {{.*}}, i32 -4
// FIXME: should actually call _EC, not _GC.
// CODEGEN: call x86_thiscallcc void @"\01??_GC@@UAEPAXI@Z"
// CODEGEN: ret
// CODEGEN-LABEL: define linkonce_odr x86_thiscallcc void @"\01?public_f@C@@W3AEXXZ"(%struct.C*
// CODEGEN: getelementptr i8* {{.*}}, i32 -4
// CODEGEN: call x86_thiscallcc void @"\01?public_f@C@@UAEXXZ"(%struct.C*
// CODEGEN: ret
void zoo(C* obj) {
delete obj;
}
struct D {
virtual B* goo();
};
struct E : D {
E();
virtual C* goo();
// MANGLING-DAG: @"\01?goo@E@@UAEPAUC@@XZ"
// MANGLING-DAG: @"\01?goo@E@@QAEPAUB@@XZ"
// MANGLING-X64-DAG: @"\01?goo@E@@UEAAPEAUC@@XZ"
// MANGLING-X64-DAG: @"\01?goo@E@@QEAAPEAUB@@XZ"
};
E::E() {} // Emits vftable and forces thunk generation.
// CODEGEN-LABEL: define weak_odr x86_thiscallcc %struct.C* @"\01?goo@E@@QAEPAUB@@XZ"
// CODEGEN: call x86_thiscallcc %struct.C* @"\01?goo@E@@UAEPAUC@@XZ"
// CODEGEN: getelementptr inbounds i8* {{.*}}, i32 4
// CODEGEN: ret
struct F : virtual A, virtual B {
virtual void own_method();
virtual ~F();
};
F f; // Just make sure we don't crash, e.g. mangling the complete dtor.
struct G : C { };
struct H : E {
virtual G* goo();
// MANGLING-DAG: @"\01?goo@H@@UAEPAUG@@XZ"
// MANGLING-DAG: @"\01?goo@H@@QAEPAUB@@XZ"
// MANGLING-DAG: @"\01?goo@H@@QAEPAUC@@XZ"
// MANGLING-X64-DAG: @"\01?goo@H@@UEAAPEAUG@@XZ"
// MANGLING-X64-DAG: @"\01?goo@H@@QEAAPEAUB@@XZ"
// MANGLING-X64-DAG: @"\01?goo@H@@QEAAPEAUC@@XZ"
};
H h;
struct I : D {
I();
virtual F* goo();
};
I::I() {} // Emits vftable and forces thunk generation.
// CODEGEN-LABEL: define weak_odr x86_thiscallcc %struct.{{[BF]}}* @"\01?goo@I@@QAEPAUB@@XZ"
// CODEGEN: %[[ORIG_RET:.*]] = call x86_thiscallcc %struct.F* @"\01?goo@I@@UAEPAUF@@XZ"
// CODEGEN: %[[ORIG_RET_i8:.*]] = bitcast %struct.F* %[[ORIG_RET]] to i8*
// CODEGEN: %[[VBPTR_i8:.*]] = getelementptr inbounds i8* %[[ORIG_RET_i8]], i32 4
// CODEGEN: %[[VBPTR:.*]] = bitcast i8* %[[VBPTR_i8]] to i8**
// CODEGEN: %[[VBTABLE:.*]] = load i8** %[[VBPTR]]
// CODEGEN: %[[VBASE_OFFSET_PTR_i8:.*]] = getelementptr inbounds i8* %[[VBTABLE]], i32 8
// CODEGEN: %[[VBASE_OFFSET_PTR:.*]] = bitcast i8* %[[VBASE_OFFSET_PTR_i8]] to i32*
// CODEGEN: %[[VBASE_OFFSET:.*]] = load i32* %[[VBASE_OFFSET_PTR]]
// CODEGEN: %[[RES_i8:.*]] = getelementptr inbounds i8* %[[VBPTR_i8]], i32 %[[VBASE_OFFSET]]
// CODEGEN: %[[RES:.*]] = bitcast i8* %[[RES_i8]] to %struct.F*
// CODEGEN: phi %struct.F* {{.*}} %[[RES]]
// CODEGEN: ret %struct.{{[BF]}}*
namespace CrashOnThunksForAttributedType {
// We used to crash on this because the type of foo is an AttributedType, not
// FunctionType, and we had to look through the sugar.
struct A {
virtual void __stdcall foo();
};
struct B {
virtual void __stdcall foo();
};
struct C : A, B {
virtual void __stdcall foo();
};
C c;
}
namespace {
struct E : D {
E();
virtual C* goo();
};
E::E() {}
E e;
// Class with internal linkage has internal linkage thunks.
// CODEGEN: define internal x86_thiscallcc %struct.C* @"\01?goo@E@?A@@QAEPAUB@@XZ"
}
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