32 lines · cpp
1// RUN: %clang_cc1 -triple i686-windows-msvc -fms-extensions -emit-llvm -std=c++1y -O0 -o - %s | FileCheck %s2struct Base {};3 4// __declspec(dllexport) causes us to export the implicit constructor.5struct __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 110// CHECK-NEXT: %[[src_load:.*]] = load ptr, ptr {{.*}}11// CHECK-NEXT: %[[src_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived, ptr %[[src_load:.*]], i32 0, i32 112// 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.20struct __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 125// CHECK-NEXT: %[[src_load:.*]] = load ptr, ptr {{.*}}26// CHECK-NEXT: %[[src_a_gep:.*]] = getelementptr inbounds nuw %struct.Derived2, ptr %[[src_load:.*]], i32 0, i32 127// 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