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//@ compile-flags: -Zunsound-mir-opts
// FIXME: see <https://github.com/rust-lang/rust/issues/132353>
//@ compile-flags: -Cdebuginfo=full
// Check if we have transformed the nested clone to the copy in the complete pipeline.
#[derive(Clone)]
struct AllCopy {
a: i32,
b: u64,
c: [i8; 3],
}
#[derive(Clone)]
struct NestCopy {
a: i32,
b: AllCopy,
c: [i8; 3],
}
#[derive(Clone)]
enum Enum1 {
A(AllCopy),
B(NestCopy),
}
// EMIT_MIR clone_as_copy.clone_as_copy.PreCodegen.after.mir
fn clone_as_copy(v: &NestCopy) -> NestCopy {
// CHECK-LABEL: fn clone_as_copy(
// CHECK-NOT: = AllCopy { {{.*}} };
// CHECK-NOT: = NestCopy { {{.*}} };
// CHECK: _0 = copy (*_1);
// CHECK: return;
v.clone()
}
// FIXME: We can merge into exactly one assignment statement.
// EMIT_MIR clone_as_copy.enum_clone_as_copy.PreCodegen.after.mir
fn enum_clone_as_copy(v: &Enum1) -> Enum1 {
// CHECK-LABEL: fn enum_clone_as_copy(
// CHECK-NOT: = Enum1::
// CHECK: _0 = copy (*_1);
// CHECK: _0 = copy (*_1);
v.clone()
}
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