rust/tests/mir-opt/inline/inline_cycle.rs
2023-04-06 10:08:07 +01:00

62 lines
907 B
Rust

// ignore-wasm32 compiled with panic=abort by default
// Check that inliner handles various forms of recursion and doesn't fall into
// an infinite inlining cycle. The particular outcome of inlining is not
// crucial otherwise.
//
// Regression test for issue #78573.
fn main() {
one();
two();
}
// EMIT_MIR inline_cycle.one.Inline.diff
fn one() {
<C as Call>::call();
}
pub trait Call {
fn call();
}
pub struct A<T>(T);
pub struct B<T>(T);
pub struct C;
impl<T: Call> Call for A<T> {
#[inline]
fn call() {
<B<T> as Call>::call()
}
}
impl<T: Call> Call for B<T> {
#[inline]
fn call() {
<T as Call>::call()
}
}
impl Call for C {
#[inline]
fn call() {
A::<C>::call()
}
}
// EMIT_MIR inline_cycle.two.Inline.diff
fn two() {
call(f);
}
#[inline]
fn call<F: FnOnce()>(f: F) {
f();
}
#[inline]
fn f() {
call(f);
}