1// RUN: %clang_cc1 %s -fno-rtti -triple=i686-pc-win32 -emit-llvm -o - | FileCheck --check-prefix=CHECK32 %s 2// RUN: %clang_cc1 %s -fno-rtti -triple=x86_64-pc-win32 -emit-llvm -o - | FileCheck --check-prefix=CHECK64 %s 3 4namespace byval_thunk { 5struct Agg { 6 Agg(); 7 Agg(const Agg &); 8 ~Agg(); 9 int x; 10}; 11 12struct A { virtual void foo(Agg x); }; 13struct B { virtual void foo(Agg x); }; 14struct C : A, B { C(); virtual void foo(Agg x); }; 15C::C() {} // force emission 16 17// CHECK32-LABEL: define linkonce_odr x86_thiscallcc void @"\01?foo@C@byval_thunk@@W3AEXUAgg@2@@Z" 18// CHECK32: (%"struct.byval_thunk::C"* %this, <{ %"struct.byval_thunk::Agg" }>* inalloca) 19// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4 20// CHECK32: musttail call x86_thiscallcc void @"\01?foo@C@byval_thunk@@UAEXUAgg@2@@Z" 21// CHECK32: (%"struct.byval_thunk::C"* %{{.*}}, <{ %"struct.byval_thunk::Agg" }>* inalloca %0) 22// CHECK32-NEXT: ret void 23 24// CHECK64-LABEL: define linkonce_odr void @"\01?foo@C@byval_thunk@@W7EAAXUAgg@2@@Z" 25// CHECK64: (%"struct.byval_thunk::C"* %this, %"struct.byval_thunk::Agg"* %x) 26// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8 27// CHECK64: call void @"\01?foo@C@byval_thunk@@UEAAXUAgg@2@@Z" 28// CHECK64: (%"struct.byval_thunk::C"* %{{.*}}, %"struct.byval_thunk::Agg"* %x) 29// CHECK64-NOT: call 30// CHECK64: ret void 31} 32 33namespace stdcall_thunk { 34struct Agg { 35 Agg(); 36 Agg(const Agg &); 37 ~Agg(); 38 int x; 39}; 40 41struct A { virtual void __stdcall foo(Agg x); }; 42struct B { virtual void __stdcall foo(Agg x); }; 43struct C : A, B { C(); virtual void __stdcall foo(Agg x); }; 44C::C() {} // force emission 45 46// CHECK32-LABEL: define linkonce_odr x86_stdcallcc void @"\01?foo@C@stdcall_thunk@@W3AGXUAgg@2@@Z" 47// CHECK32: (<{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* inalloca) 48// CHECK32: %[[this_slot:[^ ]*]] = getelementptr inbounds <{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>, <{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* %0, i32 0, i32 0 49// CHECK32: load %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::C"** %[[this_slot]] 50// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4 51// CHECK32: store %"struct.stdcall_thunk::C"* %{{.*}}, %"struct.stdcall_thunk::C"** %[[this_slot]] 52// CHECK32: musttail call x86_stdcallcc void @"\01?foo@C@stdcall_thunk@@UAGXUAgg@2@@Z" 53// CHECK32: (<{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* inalloca %0) 54// CHECK32-NEXT: ret void 55 56// CHECK64-LABEL: define linkonce_odr void @"\01?foo@C@stdcall_thunk@@W7EAAXUAgg@2@@Z" 57// CHECK64: (%"struct.stdcall_thunk::C"* %this, %"struct.stdcall_thunk::Agg"* %x) 58// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8 59// CHECK64: call void @"\01?foo@C@stdcall_thunk@@UEAAXUAgg@2@@Z" 60// CHECK64: (%"struct.stdcall_thunk::C"* %{{.*}}, %"struct.stdcall_thunk::Agg"* %x) 61// CHECK64-NOT: call 62// CHECK64: ret void 63} 64 65namespace sret_thunk { 66struct Agg { 67 Agg(); 68 Agg(const Agg &); 69 ~Agg(); 70 int x; 71}; 72 73struct A { virtual Agg __cdecl foo(Agg x); }; 74struct B { virtual Agg __cdecl foo(Agg x); }; 75struct C : A, B { C(); virtual Agg __cdecl foo(Agg x); }; 76C::C() {} // force emission 77 78// CHECK32-LABEL: define linkonce_odr %"struct.sret_thunk::Agg"* @"\01?foo@C@sret_thunk@@W3AA?AUAgg@2@U32@@Z" 79// CHECK32: (<{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* inalloca) 80// CHECK32: %[[this_slot:[^ ]*]] = getelementptr inbounds <{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>, <{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* %0, i32 0, i32 0 81// CHECK32: load %"struct.sret_thunk::C"*, %"struct.sret_thunk::C"** %[[this_slot]] 82// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4 83// CHECK32: store %"struct.sret_thunk::C"* %{{.*}}, %"struct.sret_thunk::C"** %[[this_slot]] 84// CHECK32: %[[rv:[^ ]*]] = musttail call %"struct.sret_thunk::Agg"* @"\01?foo@C@sret_thunk@@UAA?AUAgg@2@U32@@Z" 85// CHECK32: (<{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* inalloca %0) 86// CHECK32-NEXT: ret %"struct.sret_thunk::Agg"* %[[rv]] 87 88// CHECK64-LABEL: define linkonce_odr void @"\01?foo@C@sret_thunk@@W7EAA?AUAgg@2@U32@@Z" 89// CHECK64: (%"struct.sret_thunk::C"* %this, %"struct.sret_thunk::Agg"* noalias sret %agg.result, %"struct.sret_thunk::Agg"* %x) 90// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8 91// CHECK64: call void @"\01?foo@C@sret_thunk@@UEAA?AUAgg@2@U32@@Z" 92// CHECK64: (%"struct.sret_thunk::C"* %{{.*}}, %"struct.sret_thunk::Agg"* sret %agg.result, %"struct.sret_thunk::Agg"* %x) 93// CHECK64-NOT: call 94// CHECK64: ret void 95} 96 97#if 0 98// FIXME: When we extend LLVM IR to allow forwarding of varargs through musttail 99// calls, use this test. 100namespace variadic_thunk { 101struct Agg { 102 Agg(); 103 Agg(const Agg &); 104 ~Agg(); 105 int x; 106}; 107 108struct A { virtual void foo(Agg x, ...); }; 109struct B { virtual void foo(Agg x, ...); }; 110struct C : A, B { C(); virtual void foo(Agg x, ...); }; 111C::C() {} // force emission 112} 113#endif 114