1// RUN: %clang_cc1 -emit-llvm %s -verify -fno-rtti -triple %itanium_abi_triple -o - | FileCheck %s 2// expected-no-diagnostics 3 4struct A { 5 virtual ~A(){}; 6}; 7 8struct B : public A { 9 B() : A() {} 10}; 11 12// An upcast can be resolved statically and can be used with -fno-rtti, iff it 13// does not use runtime support. 14A *upcast(B *b) { 15 return dynamic_cast<A *>(b); 16// CHECK-LABEL: define %struct.A* @_Z6upcastP1B 17// CHECK-NOT: call i8* @__dynamic_cast 18} 19 20// A NoOp dynamic_cast can be used with -fno-rtti iff it does not use 21// runtime support. 22B *samecast(B *b) { 23 return dynamic_cast<B *>(b); 24// CHECK-LABEL: define %struct.B* @_Z8samecastP1B 25// CHECK-NOT: call i8* @__dynamic_cast 26} 27