From 7fdd058c609e9cc727b44a63fd4d9d1ad3cef206 Mon Sep 17 00:00:00 2001 From: bjorn3 Date: Sat, 27 Jul 2019 17:48:24 +0200 Subject: Emulate some simd intrinsics --- example/std_example.rs | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'example/std_example.rs') diff --git a/example/std_example.rs b/example/std_example.rs index 2a9df999559..7deaddd7df7 100644 --- a/example/std_example.rs +++ b/example/std_example.rs @@ -3,6 +3,7 @@ use std::io::Write; use std::intrinsics; + fn main() { let _ = ::std::iter::repeat('a' as u8).take(10).collect::>(); let stderr = ::std::io::stderr(); @@ -43,6 +44,21 @@ fn main() { assert_eq!(0xFEDCBA987654321123456789ABCDEFu128 >> 64, 0xFEDCBA98765432u128); assert_eq!(0xFEDCBA987654321123456789ABCDEFu128 as i128 >> 64, 0xFEDCBA98765432i128); assert_eq!(353985398u128 * 932490u128, 330087843781020u128); + + unsafe { + test_simd(); + } +} + +#[target_feature(enable = "sse2")] +unsafe fn test_simd() { + use std::arch::x86_64::*; + + let x = _mm_setzero_si128(); + let y = _mm_set1_epi16(7); + let or = _mm_or_si128(x, y); + + assert_eq!(std::mem::transmute::<_, [u16; 8]>(or), [7, 7, 7, 7, 7, 7, 7, 7]); } #[derive(PartialEq)] -- cgit 1.4.1-3-g733a5