rust/tests/codegen/sse42-implies-crc32.rs

16 lines
344 B
Rust

//@ only-x86_64
//@ compile-flags: -Copt-level=3
#![crate_type = "lib"]
#[cfg(target_arch = "x86_64")]
#[target_feature(enable = "sse4.2")]
#[no_mangle]
pub unsafe fn crc32sse(v: u8) -> u32 {
use std::arch::x86_64::*;
let out = !0u32;
_mm_crc32_u8(out, v)
}
// CHECK: attributes #0 {{.*"target-features"=".*\+sse4.2,\+crc32.*"}}