26 lines · cpp
1// RUN: %clang_cc1 -std=c++2a %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s2 3struct TriviallyCopyable {};4 5struct NonTriviallyCopyable {6 NonTriviallyCopyable() = default;7 NonTriviallyCopyable(const NonTriviallyCopyable&) = default;8 NonTriviallyCopyable(NonTriviallyCopyable &&) {}9};10 11struct Foo {12 int i;13 [[no_unique_address]] TriviallyCopyable m;14 [[no_unique_address]] NonTriviallyCopyable n;15};16 17void call() {18 Foo foo;19 Foo foo2(static_cast<Foo&&>(foo));20}21 22// The memcpy call should copy exact 4 bytes for member 'int i'23// CHECK: define {{.*}} void @_ZN3FooC2EOS_24// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.+}}, ptr {{.+}}, i64 4, i1 false)25// CHECK: call void @_ZN20NonTriviallyCopyableC2EOS_26