rust/tests/mir-opt/const_prop/control_flow_simplification.rs

24 lines
481 B
Rust

// skip-filecheck
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
//@ test-mir-pass: GVN
//@ 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.GVN.diff
// EMIT_MIR control_flow_simplification.hello.PreCodegen.before.mir
fn hello<T>(){
if <bool>::NEEDS {
panic!()
}
}
pub fn main() {
hello::<()>();
hello::<Vec<()>>();
}