rust/tests/codegen/naked-fn/naked-nocoverage.rs

// Checks that naked functions are not instrumented by -Cinstrument-coverage.
// Regression test for issue #105170.
//
//@ needs-asm-support
//@ compile-flags: -Zno-profiler-runtime
//@ compile-flags: -Cinstrument-coverage
#![crate_type = "lib"]
#![feature(naked_functions)]
use std::arch::naked_asm;

#[naked]
#[no_mangle]
pub unsafe extern "C" fn f() {
    // CHECK:       define {{(dso_local )?}}void @f()
    // CHECK-NEXT:  start:
    // CHECK-NEXT:    call void asm
    // CHECK-NEXT:    unreachable
    naked_asm!("");
}