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// skip-filecheck
#![feature(try_trait_v2)]
//@ compile-flags: -Zunsound-mir-opts
use std::ops::ControlFlow;
// EMIT_MIR separate_const_switch.too_complex.JumpThreading.diff
fn too_complex(x: Result<i32, usize>) -> Option<i32> {
// The pass should break the outer match into
// two blocks that only have one parent each.
// Parents are one of the two branches of the first
// match, so a later pass can propagate constants.
match {
match x {
Ok(v) => ControlFlow::Continue(v),
Err(r) => ControlFlow::Break(r),
}
} {
ControlFlow::Continue(v) => Some(v),
ControlFlow::Break(r) => None,
}
}
// EMIT_MIR separate_const_switch.identity.JumpThreading.diff
fn identity(x: Result<i32, i32>) -> Result<i32, i32> {
Ok(x?)
}
fn main() {
too_complex(Ok(0));
identity(Ok(0));
}
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