rust/tests/ui/target-feature/target-feature-detection.rs

22 lines
717 B
Rust

//! Check that `cfg!(target_feature = "...")` correctly detects available CPU features,
//! specifically `sse2` on x86/x86_64 platforms, and correctly reports absent features.
//@ run-pass
//@ ignore-i586 (no SSE2)
fn main() {
if cfg!(any(target_arch = "x86", target_arch = "x86_64")) {
assert!(
cfg!(target_feature = "sse2"),
"SSE2 was not detected as available on an x86 platform"
);
}
// check a negative case too -- certainly not enabled by default
#[expect(unexpected_cfgs)]
{
assert!(
cfg!(not(target_feature = "ferris_wheel")),
"🎡 shouldn't be detected as available by default on any platform"
)
};
}