1 // RUN: %clang_cc1 -triple i686-windows-msvc -fms-extensions -emit-llvm -std=c++1y -O0 -o - %s | FileCheck %s 2 struct Base {}; 3 4 // __declspec(dllexport) causes us to export the implicit constructor. 5 struct __declspec(dllexport) Derived : virtual Base { 6 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc noundef ptr @"??0Derived@@QAE@ABU0@@Z" 7 // CHECK: %[[this:.*]] = load ptr, ptr {{.*}} 8 // CHECK-NEXT: store ptr %[[this]], ptr %[[retval:.*]] 9 // CHECK: %[[dest_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived, ptr %[[this]], i32 0, i32 1 10 // CHECK-NEXT: %[[src_load:.*]] = load ptr, ptr {{.*}} 11 // CHECK-NEXT: %[[src_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived, ptr %[[src_load:.*]], i32 0, i32 1 12 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %[[dest_a_gep]], ptr align 4 %[[src_a_gep]], i64 1, i1 false) 13 // CHECK-NEXT: %[[dest_this:.*]] = load ptr, ptr %[[retval]] 14 // CHECK-NEXT: ret ptr %[[dest_this]] 15 bool a : 1; 16 bool b : 1; 17 }; 18 19 // __declspec(dllexport) causes us to export the implicit copy constructor. 20 struct __declspec(dllexport) Derived2 : virtual Base { 21 // CHECK-LABEL: define weak_odr dso_local dllexport x86_thiscallcc noundef ptr @"??0Derived2@@QAE@ABU0@@Z" 22 // CHECK: %[[this:.*]] = load ptr, ptr {{.*}} 23 // CHECK-NEXT: store ptr %[[this]], ptr %[[retval:.*]] 24 // CHECK: %[[dest_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived2, ptr %[[this]], i32 0, i32 1 25 // CHECK-NEXT: %[[src_load:.*]] = load ptr, ptr {{.*}} 26 // CHECK-NEXT: %[[src_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived2, ptr %[[src_load:.*]], i32 0, i32 1 27 // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %[[dest_a_gep]], ptr align 4 %[[src_a_gep]], i32 4, i1 false) 28 // CHECK-NEXT: %[[dest_this:.*]] = load ptr, ptr %[[retval]] 29 // CHECK-NEXT: ret ptr %[[dest_this]] 30 int Array[1]; 31 }; 32