src/test/run-pass/sse2.rs


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// Copyright 2012-2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

// min-llvm-version 6.0
// ^ needs MCSubtargetInfo::checkFeatures()
// ignore-cloudabi no std::env

#![feature(cfg_target_feature)]

use std::env;

fn main() {
    match env::var("TARGET") {
        Ok(s) => {
            // Skip this tests on i586-unknown-linux-gnu where sse2 is disabled
            if s.contains("i586") {
                return
            }
        }
        Err(_) => return,
    }
    if cfg!(any(target_arch = "x86", target_arch = "x86_64")) {
        assert!(cfg!(target_feature = "sse2"),
                "SSE2 was not detected as available on an x86 platform");
    }
    // check a negative case too -- whitelisted on x86, but not enabled by default
    assert!(cfg!(not(target_feature = "avx2")),
            "AVX2 shouldn't be detected as available by default on any platform");
}