1 // RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -emit-llvm -o - %s | FileCheck %s 2 3 union PR23373 { 4 PR23373(PR23373&) = default; 5 PR23373 &operator=(PR23373&) = default; 6 int n; 7 float f; 8 }; 9 extern PR23373 pr23373_a; 10 11 PR23373 pr23373_b(pr23373_a); 12 // CHECK-LABEL: define {{.*}} @__cxx_global_var_init( 13 // CHECK: call void @llvm.memcpy.p0i8.p0i8.{{i32|i64}}({{.*}} @pr23373_b{{.*}}, {{.*}} @pr23373_a{{.*}}, [[W:i32|i64]] 4, i32 4, i1 false) 14 15 PR23373 pr23373_f() { return pr23373_a; } 16 // CHECK-LABEL: define {{.*}} @_Z9pr23373_fv( 17 // CHECK: call void @llvm.memcpy.p0i8.p0i8.[[W]]({{.*}}, [[W]] 4, i32 4, i1 false) 18 19 void pr23373_g(PR23373 &a, PR23373 &b) { a = b; } 20 // CHECK-LABEL: define {{.*}} @_Z9pr23373_g 21 // CHECK: call void @llvm.memcpy.p0i8.p0i8.[[W]]({{.*}}, [[W]] 4, i32 4, i1 false) 22 23 struct A { virtual void a(); }; 24 A x(A& y) { return y; } 25 26 // CHECK: define linkonce_odr {{.*}} @_ZN1AC1ERKS_(%struct.A* {{.*}}%this, %struct.A* dereferenceable({{[0-9]+}})) unnamed_addr 27 // CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([3 x i8*], [3 x i8*]* @_ZTV1A, i64 0, i64 2) to i32 (...)**) 28
