| // RUN: %clang_cc1 -std=c++98 -triple i386-unknown-unknown -fno-elide-constructors -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX98 |
| // RUN: %clang_cc1 -std=c++11 -triple i386-unknown-unknown -fno-elide-constructors -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX11 |
| // RUN: %clang_cc1 -std=c++11 -triple amdgcn-amd-amdhsa -fno-elide-constructors -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK --check-prefix=CHECK-CXX11-NONZEROALLOCAAS |
| // RUN: %clang_cc1 -std=c++98 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX98-ELIDE |
| // RUN: %clang_cc1 -std=c++11 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX11-ELIDE |
| // RUN: %clang_cc1 -std=c++11 -triple amdgcn-amd-amdhsa -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX11-NONZEROALLOCAAS-ELIDE |
| |
| // Reduced from PR12208 |
| class X { |
| public: |
| X(); |
| X(const X&); |
| #if __cplusplus >= 201103L |
| X(X&&); |
| #endif |
| ~X(); |
| }; |
| |
| // CHECK-LABEL: define{{.*}} void @_Z4Testv( |
| // CHECK-SAME: ptr {{.*}}dead_on_unwind noalias writable sret([[CLASS_X:%.*]]) align 1 [[AGG_RESULT:%.*]]) |
| X Test() |
| { |
| X x; |
| |
| // Check that the copy constructor for X is called with result variable as |
| // sret argument. |
| // CHECK-CXX98: call void @_ZN1XC1ERKS_( |
| // CHECK-CXX11: call void @_ZN1XC1EOS_( |
| // CHECK-CXX11-NONZEROALLOCAAS: [[TMP0:%.*]] = addrspacecast ptr addrspace(5) [[AGG_RESULT]] to ptr |
| // CHECK-CXX11-NONZEROALLOCAAS-NEXT: call void @_ZN1XC1EOS_(ptr noundef nonnull align 1 dereferenceable(1) [[TMP0]] |
| // CHECK-CXX98-ELIDE-NOT: call void @_ZN1XC1ERKS_( |
| // CHECK-CXX11-ELIDE-NOT: call void @_ZN1XC1EOS_( |
| // CHECK-CXX11-NONZEROALLOCAAS-ELIDE-NOT: call void @_ZN1XC1EOS_( |
| |
| // Make sure that the destructor for X is called. |
| // FIXME: This call is present even in the -ELIDE runs, but is guarded by a |
| // branch that is never taken in those cases. We could generate better IR |
| // here. |
| // CHECK: call void @_ZN1XD1Ev( |
| return x; |
| } |
