26 lines
739 B
C++
26 lines
739 B
C++
// RUN: %clang_cc1 -std=c++2a %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s
|
|
|
|
struct TriviallyCopyable {};
|
|
|
|
struct NonTriviallyCopyable {
|
|
NonTriviallyCopyable() = default;
|
|
NonTriviallyCopyable(const NonTriviallyCopyable&) = default;
|
|
NonTriviallyCopyable(NonTriviallyCopyable &&) {}
|
|
};
|
|
|
|
struct Foo {
|
|
int i;
|
|
[[no_unique_address]] TriviallyCopyable m;
|
|
[[no_unique_address]] NonTriviallyCopyable n;
|
|
};
|
|
|
|
void call() {
|
|
Foo foo;
|
|
Foo foo2(static_cast<Foo&&>(foo));
|
|
}
|
|
|
|
// The memcpy call should copy exact 4 bytes for member 'int i'
|
|
// CHECK: define {{.*}} void @_ZN3FooC2EOS_
|
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.+}}, i8* {{.+}}, i64 4, i1 false)
|
|
// CHECK: call void @_ZN20NonTriviallyCopyableC2EOS_
|