| Senran Zhang | 01d8e09 | 2019-11-26 10:15:14 +0800 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++2a %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s |
| 2 | |
| 3 | struct TriviallyCopyable {}; |
| 4 | |
| 5 | struct NonTriviallyCopyable { |
| 6 | NonTriviallyCopyable() = default; |
| 7 | NonTriviallyCopyable(const NonTriviallyCopyable&) = default; |
| 8 | NonTriviallyCopyable(NonTriviallyCopyable &&) {} |
| 9 | }; |
| 10 | |
| 11 | struct Foo { |
| 12 | int i; |
| 13 | [[no_unique_address]] TriviallyCopyable m; |
| 14 | [[no_unique_address]] NonTriviallyCopyable n; |
| 15 | }; |
| 16 | |
| 17 | void 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.p0i8.p0i8.i64(i8* {{.+}}, i8* {{.+}}, i64 4, i1 false) |
| 25 | // CHECK: call void @_ZN20NonTriviallyCopyableC2EOS_ |