| //@ 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.*"}} |