rust/tests/mir-opt/inline/inline_options.rs

// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
// Checks that inlining threshold can be controlled with
// inline-mir-threshold and inline-hint-threshold options.
//
//@ compile-flags: -Zinline-mir-threshold=90
//@ compile-flags: -Zinline-mir-hint-threshold=50

// EMIT_MIR inline_options.main.Inline.after.mir
fn main() {
    // CHECK-LABEL: fn main(
    // CHECK-NOT: (inlined not_inlined)
    not_inlined();
    // CHECK: (inlined inlined::<u32>)
    inlined::<u32>();
}

// Cost is approximately 3 * 25 + 5 = 80.
#[inline]
pub fn not_inlined() {
    g();
    g();
    g();
}
pub fn inlined<T>() {
    g();
    g();
    g();
}

#[inline(never)]
fn g() {}