| // RUN: %clang_cc1 -triple armv7-none-eabi -emit-llvm -o - %s | FileCheck %s |
| |
| struct A { int x; A(int); ~A(); }; |
| A f() { return A(0); } |
| // CHECK-LABEL: define void @_Z1fv |
| // CHECK: call {{.*}} @_ZN1AC1Ei |
| // CHECK-NEXT: ret void |
| |
| // Verify that we do not elide copies when constructing a base class. |
| namespace no_elide_base { |
| struct Base { |
| Base(const Base&); |
| ~Base(); |
| }; |
| |
| struct Other { |
| operator Base() const; |
| }; |
| |
| struct Derived : public virtual Base { |
| Derived(const Other &O); |
| }; |
| |
| // CHECK: define {{.*}} @_ZN13no_elide_base7DerivedC1ERKNS_5OtherE(%"struct.no_elide_base::Derived"* returned %this, %"struct.no_elide_base::Other"* %O) unnamed_addr |
| Derived::Derived(const Other &O) |
| // CHECK: call {{.*}} @_ZNK13no_elide_base5OthercvNS_4BaseEEv |
| // CHECK: call {{.*}} @_ZN13no_elide_base4BaseC2ERKS0_ |
| // CHECK: call {{.*}} @_ZN13no_elide_base4BaseD1Ev |
| : Base(O) |
| { |
| // CHECK: ret |
| } |
| } |
| |
| // PR8683. |
| |
| namespace PR8683 { |
| |
| struct A { |
| A(); |
| A(const A&); |
| A& operator=(const A&); |
| }; |
| |
| struct B { |
| A a; |
| }; |
| |
| void f() { |
| // Verify that we don't mark the copy constructor in this expression as elidable. |
| // CHECK: call {{.*}} @_ZN6PR86831AC1ERKS0_ |
| A a = (B().a); |
| } |
| |
| } |
| |
| namespace PR12139 { |
| struct A { |
| A() : value(1) { } |
| A(A const &, int value = 2) : value(value) { } |
| int value; |
| |
| static A makeA() { A a; a.value = 2; return a; } |
| }; |
| |
| // CHECK-LABEL: define i32 @_ZN7PR121394testEv |
| int test() { |
| // CHECK: call void @_ZN7PR121391A5makeAEv |
| // CHECK-NEXT: call %"struct.PR12139::A"* @_ZN7PR121391AC1ERKS0_i |
| A a(A::makeA(), 3); |
| // CHECK-NEXT: getelementptr inbounds |
| // CHECK-NEXT: load |
| // CHECK-NEXT: ret i32 |
| return a.value; |
| } |
| } |
| |