rust/src/test/mir-opt/const_prop/control-flow-simplification.rs

21 lines
403 B
Rust

// compile-flags: -Zmir-opt-level=1
trait NeedsDrop:Sized{
const NEEDS:bool=std::mem::needs_drop::<Self>();
}
impl<This> NeedsDrop for This{}
// EMIT_MIR control_flow_simplification.hello.ConstProp.diff
// EMIT_MIR control_flow_simplification.hello.PreCodegen.before.mir
fn hello<T>(){
if <bool>::NEEDS {
panic!()
}
}
pub fn main() {
hello::<()>();
hello::<Vec<()>>();
}