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