2021-09-15 09:18:10 -05:00
|
|
|
//@ 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)
|
|
|
|
|
}
|
|
|
|
|
|
2024-07-26 10:27:21 -05:00
|
|
|
// CHECK: attributes #0 {{.*"target-features"=".*\+sse4.2,\+crc32.*"}}
|
