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clang/test/CodeGenCXX/copy-elision.cpp
- This file was added.
| // RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown-gnu -emit-llvm -O1 -fexperimental-new-pass-manager -o - %s | FileCheck %s | |||||
| template <class T> T test() { | |||||
| return T(); | |||||
| } | |||||
| struct A { | |||||
| A(); | |||||
| A(A &); | |||||
| A(int); | |||||
| operator int(); | |||||
| }; | |||||
| // FIXME: There should be copy elision here. | |||||
| // CHECK-LABEL: define{{.*}} void @_Z4testI1AET_v | |||||
| // CHECK: call void @_ZN1AC1Ev | |||||
| // CHECK-NEXT: call i32 @_ZN1AcviEv | |||||
| // CHECK-NEXT: call void @_ZN1AC1Ei | |||||
| // CHECK-NEXT: call void @llvm.lifetime.end | |||||
| template A test<A>(); | |||||
| struct BSub {}; | |||||
| struct B : BSub { | |||||
| B(); | |||||
| B(B &); | |||||
| B(const BSub &); | |||||
| }; | |||||
| // FIXME: There should be copy elision here. | |||||
| // CHECK-LABEL: define{{.*}} void @_Z4testI1BET_v | |||||
| // CHECK: call void @_ZN1BC1Ev | |||||
| // CHECK: call void @_ZN1BC1ERK4BSub | |||||
| // CHECK-NEXT: call void @llvm.lifetime.end | |||||
| template B test<B>(); | |||||