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// 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;
}
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