File: issue-84268.rs

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rustc 1.85.0%2Bdfsg3-1
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//@ compile-flags: -O --crate-type=rlib
#![feature(intrinsics, repr_simd)]

extern "rust-intrinsic" {
    fn simd_fabs<T>(x: T) -> T;
    fn simd_eq<T, U>(x: T, y: T) -> U;
}

#[repr(simd)]
pub struct V([f32; 4]);

#[repr(simd)]
pub struct M([i32; 4]);

#[no_mangle]
// CHECK-LABEL: @is_infinite
pub fn is_infinite(v: V) -> M {
    // CHECK: fabs
    // CHECK: cmp oeq
    unsafe { simd_eq(simd_fabs(v), V([f32::INFINITY; 4])) }
}