cranelift-codegen 0.24.0

Low-level code generator library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

//! x86 Settings.

use settings::{self, detail, Builder};
use std::fmt;

// Include code generated by `lib/codegen/meta-python/gen_settings.py`. This file contains a public
// `Flags` struct with an impl for all of the settings defined in
// `lib/codegen/meta-python/isa/x86/settings.py`.
include!(concat!(env!("OUT_DIR"), "/settings-x86.rs"));

#[cfg(test)]
mod tests {
    use super::{builder, Flags};
    use settings::{self, Configurable};

    #[test]
    fn presets() {
        let shared = settings::Flags::new(settings::builder());

        // Nehalem has SSE4.1 but not BMI1.
        let mut b0 = builder();
        b0.enable("nehalem").unwrap();
        let f0 = Flags::new(&shared, b0);
        assert_eq!(f0.has_sse41(), true);
        assert_eq!(f0.has_bmi1(), false);

        let mut b1 = builder();
        b1.enable("haswell").unwrap();
        let f1 = Flags::new(&shared, b1);
        assert_eq!(f1.has_sse41(), true);
        assert_eq!(f1.has_bmi1(), true);
    }
    #[test]
    fn display_presets() {
        // Spot check that the flags Display impl does not cause a panic
        let shared = settings::Flags::new(settings::builder());

        let b0 = builder();
        let f0 = Flags::new(&shared, b0);
        let _ = format!("{}", f0);

        let mut b1 = builder();
        b1.enable("nehalem").unwrap();
        let f1 = Flags::new(&shared, b1);
        let _ = format!("{}", f1);

        let mut b2 = builder();
        b2.enable("haswell").unwrap();
        let f2 = Flags::new(&shared, b2);
        let _ = format!("{}", f2);
    }
}