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// compile-flags: -C no-prepopulate-passes -O -Z mir-opt-level=3 -Zunsound-mir-opts
// Ensure that `x?` has no overhead on `Result<T, E>` due to identity `match`es in lowering.
// This requires inlining to trigger the MIR optimizations in `SimplifyArmIdentity`.
#![crate_type = "lib"]
type R = Result<u64, i32>;
#[no_mangle]
fn try_identity(x: R) -> R {
// CHECK: start:
// CHECK-NOT: br {{.*}}
// CHECK ret void
let y = x?;
Ok(y)
}
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