| // RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=i386-pc-win32 %s -o - | FileCheck %s --check-prefix=CHECK32 |
| // RUN: %clang_cc1 -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 C { |
| virtual void foo(); |
| virtual int bar(int, double); |
| virtual S baz(int); |
| virtual S qux(U); |
| }; |
| |
| 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; |
| |
| |
| // CHECK32-LABEL: define void @"\01?f@@YAXXZ"() |
| // CHECK32: store i8* bitcast (void (%struct.C*)* @"\01??_9C@@$BA@AE" to i8*), i8** %ptr |
| // CHECK32: store i8* bitcast (i32 (%struct.C*, i32, double)* @"\01??_9C@@$B3AE" to i8*), i8** %ptr2 |
| // CHECK32: store i8* bitcast (void (%struct.C*, %struct.S*, i32)* @"\01??_9C@@$B7AE" to i8*), i8** %ptr3 |
| // CHECK32: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*)* @"\01??_9D@?A@@$BA@AE" to i8*), i8** %ptr4 |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define void @"\01?f@@YAXXZ"() |
| // CHECK64: store i8* bitcast (void (%struct.C*)* @"\01??_9C@@$BA@AA" to i8*), i8** %ptr |
| // CHECK64: store i8* bitcast (i32 (%struct.C*, i32, double)* @"\01??_9C@@$B7AA" to i8*), i8** %ptr2 |
| // CHECK64: store i8* bitcast (void (%struct.C*, %struct.S*, i32)* @"\01??_9C@@$BBA@AA" to i8*), i8** %ptr3 |
| // CHECK64: store i8* bitcast (void (%"struct.(anonymous namespace)::D"*)* @"\01??_9D@?A@@$BA@AA" to i8*), i8** %ptr |
| // CHECK64: } |
| } |
| |
| |
| // Thunk for calling the 1st virtual function in C with no parameters. |
| // CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"\01??_9C@@$BA@AE"(%struct.C* %this) unnamed_addr |
| // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*)** %{{.*}}, i64 0 |
| // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*)** [[VPTR]] |
| // CHECK32: musttail call x86_thiscallcc void [[CALLEE]](%struct.C* %{{.*}}) |
| // CHECK32: ret void |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define linkonce_odr void @"\01??_9C@@$BA@AA"(%struct.C* %this) unnamed_addr |
| // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*)** %{{.*}}, i64 0 |
| // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*)** [[VPTR]] |
| // CHECK64: musttail call void [[CALLEE]](%struct.C* %{{.*}}) |
| // CHECK64: 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 i32 @"\01??_9C@@$B3AE"(%struct.C* %this, i32, double) unnamed_addr |
| // CHECK32: [[VPTR:%.*]] = getelementptr inbounds i32 (%struct.C*, i32, double)** %{{.*}}, i64 1 |
| // CHECK32: [[CALLEE:%.*]] = load i32 (%struct.C*, i32, double)** [[VPTR]] |
| // CHECK32: [[CALL:%.*]] = musttail call x86_thiscallcc i32 [[CALLEE]](%struct.C* %{{.*}}, i32 %{{.*}}, double %{{.*}}) |
| // CHECK32: ret i32 [[CALL]] |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define linkonce_odr i32 @"\01??_9C@@$B7AA"(%struct.C* %this, i32, double) unnamed_addr |
| // CHECK64: [[VPTR:%.*]] = getelementptr inbounds i32 (%struct.C*, i32, double)** %{{.*}}, i64 1 |
| // CHECK64: [[CALLEE:%.*]] = load i32 (%struct.C*, i32, double)** [[VPTR]] |
| // CHECK64: [[CALL:%.*]] = musttail call i32 [[CALLEE]](%struct.C* %{{.*}}, i32 %{{.*}}, double %{{.*}}) |
| // CHECK64: ret i32 [[CALL]] |
| // 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 @"\01??_9C@@$B7AE"(%struct.C* %this, %struct.S* noalias sret %agg.result, i32) unnamed_addr |
| // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, %struct.S*, i32)** %{{.*}}, i64 2 |
| // CHECK32: [[CALLEE:%.*]] = load void (%struct.C*, %struct.S*, i32)** [[VPTR]] |
| // CHECK32: musttail call x86_thiscallcc void [[CALLEE]](%struct.C* %{{.*}}, %struct.S* sret %agg.result, i32 %{{.*}}) |
| // CHECK32: ret void |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define linkonce_odr void @"\01??_9C@@$BBA@AA"(%struct.C* %this, %struct.S* noalias sret %agg.result, i32) unnamed_addr |
| // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, %struct.S*, i32)** %{{.*}}, i64 2 |
| // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, %struct.S*, i32)** [[VPTR]] |
| // CHECK64: musttail call void [[CALLEE]](%struct.C* %{{.*}}, %struct.S* sret %agg.result, i32 %{{.*}}) |
| // CHECK64: ret void |
| // CHECK64: } |
| |
| // Thunk for calling the virtual function in internal class D. |
| // CHECK32-LABEL: define internal x86_thiscallcc void @"\01??_9D@?A@@$BA@AE"(%"struct.(anonymous namespace)::D"* %this) unnamed_addr |
| // CHECK32: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*)** %{{.*}}, i64 0 |
| // CHECK32: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*)** [[VPTR]] |
| // CHECK32: musttail call x86_thiscallcc void [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}) |
| // CHECK32: ret void |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define internal void @"\01??_9D@?A@@$BA@AA"(%"struct.(anonymous namespace)::D"* %this) unnamed_addr |
| // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%"struct.(anonymous namespace)::D"*)** %{{.*}}, i64 0 |
| // CHECK64: [[CALLEE:%.*]] = load void (%"struct.(anonymous namespace)::D"*)** [[VPTR]] |
| // CHECK64: musttail call void [[CALLEE]](%"struct.(anonymous namespace)::D"* %{{.*}}) |
| // CHECK64: 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 %struct.S* @"\01??_9C@@$BM@AE"(%struct.C* %this, <{ %struct.S*, %struct.U }>* inalloca) unnamed_addr |
| // CHECK32: [[VPTR:%.*]] = getelementptr inbounds %struct.S* (%struct.C*, <{ %struct.S*, %struct.U }>*)** %{{.*}}, i64 3 |
| // CHECK32: [[CALLEE:%.*]] = load %struct.S* (%struct.C*, <{ %struct.S*, %struct.U }>*)** [[VPTR]] |
| // CHECK32: [[CALL:%.*]] = musttail call x86_thiscallcc %struct.S* [[CALLEE]](%struct.C* %this, <{ %struct.S*, %struct.U }>* inalloca %{{.*}}) |
| // CHECK32: ret %struct.S* [[CALL]] |
| // CHECK32: } |
| // |
| // CHECK64-LABEL: define linkonce_odr void @"\01??_9C@@$BBI@AA"(%struct.C* %this, %struct.S* noalias sret %agg.result, %struct.U*) unnamed_addr |
| // CHECK64: [[VPTR:%.*]] = getelementptr inbounds void (%struct.C*, %struct.S*, %struct.U*)** %{{.*}}, i64 3 |
| // CHECK64: [[CALLEE:%.*]] = load void (%struct.C*, %struct.S*, %struct.U*)** [[VPTR]] |
| // CHECK64: musttail call void [[CALLEE]](%struct.C* %this, %struct.S* sret %agg.result, %struct.U* %{{.*}}) |
| // CHECK64: ret void |
| // CHECK64: } |