symjit 2.24.1

a lightweight just-in-time (JIT) optimizer compiler
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139

use anyhow::Result;
pub use num_complex::{Complex, ComplexFloat};
use symjit::{Composer, Config, Defuns, Slot, Translator};

fn compile_external_evaluators(direct: bool, complex: bool) -> Result<symjit::Application> {
    let mut config = Config::default();
    config.set_complex(complex);
    config.set_direct(direct);
    config.set_debug_scalar(false);

    let mut inner = Translator::new(config);
    inner.set_num_params(2);
    inner.append_mul(&Slot::Out(0), &[Slot::Param(0), Slot::Param(1)], 0)?;
    let f = inner.compile()?.seal()?;

    let mut defuns = Defuns::new();
    defuns.add_applet("f", f);

    let mut config = Config::default();
    config.set_complex(complex);
    config.set_direct(direct);
    config.set_debug_scalar(false);
    config.set_defuns(defuns);
    // config.set_debug_bytecode(!complex && !direct);

    let mut outer = Translator::new(config);
    outer.set_num_params(2);
    outer.append_constant(Complex::new(7.0, -2.0))?;

    outer.append_fun(
        &Slot::Temp(0),
        "f",
        &[Slot::Param(0), Slot::Const(0)],
        false,
    )?;

    outer.append_add(&Slot::Out(0), &[Slot::Temp(0), Slot::Param(1)], 0)?;
    Ok(outer.compile()?)
}

fn test_external_evaluators_real() -> Result<()> {
    let args = [5.0, 2.0];
    let expected = 37.0;
    let optimized = compile_external_evaluators(false, false)?.evaluate_single(&args);
    let direct = compile_external_evaluators(true, false)?.evaluate_single(&args);

    eprintln!("expected:             {expected}");
    eprintln!("optimized translator: {optimized}");
    eprintln!("direct translator:    {direct}");

    assert_eq!(optimized, expected, "optimized translation is incorrect");
    assert_eq!(direct, expected);
    Ok(())
}

fn test_external_evaluators_complex() -> Result<()> {
    let args = [Complex::new(5.0, -2.0), Complex::new(2.0, 3.0)];
    let expected = Complex::new(33.0, -21.0);
    let optimized = compile_external_evaluators(false, true)?.evaluate_single(&args);
    let direct = compile_external_evaluators(true, true)?.evaluate_single(&args);

    eprintln!("expected:             {expected}");
    eprintln!("optimized translator: {optimized}");
    eprintln!("direct translator:    {direct}");

    assert_eq!(optimized, expected, "optimized translation is incorrect");
    assert_eq!(direct, expected);
    Ok(())
}

fn test_external_evaluators_real_simd() -> Result<()> {
    let args: Vec<f64> = (0..100).map(|x| f64::from(x)).collect();
    let expected: Vec<f64> = (0..100)
        .step_by(2)
        .map(|x| f64::from(7 * x + x + 1))
        .collect();

    let mut optimized = vec![0.0; 50];
    let mut direct = vec![0.0; 50];

    compile_external_evaluators(false, false)?.evaluate_matrix(&args, &mut optimized, 50);
    compile_external_evaluators(true, false)?.evaluate_matrix(&args, &mut direct, 50);

    eprintln!("expected:             {:?}", expected[10]);
    eprintln!("optimized translator: {:?}", optimized[10]);
    eprintln!("direct translator:    {:?}", direct[10]);

    assert_eq!(
        optimized[10], expected[10],
        "optimized translation is incorrect"
    );
    assert_eq!(direct[10], expected[10]);
    Ok(())
}

fn test_external_evaluators_complex_simd() -> Result<()> {
    let args: Vec<Complex<f64>> = (0..100).map(|x| Complex::new(x as f64, x as f64)).collect();
    let mut expected = vec![Complex::new(0.0, 0.0); 50];
    let mut optimized = vec![Complex::new(0.0, 0.0); 50];
    let mut direct = vec![Complex::new(0.0, 0.0); 50];

    for i in 0..50 {
        expected[i] = Complex::new(7.0, -2.0) * args[2 * i] + args[2 * i + 1];
    }

    compile_external_evaluators(false, true)?.evaluate_matrix(&args, &mut optimized, 50);
    compile_external_evaluators(true, true)?.evaluate_matrix(&args, &mut direct, 50);

    eprintln!("expected:             {:?}", expected[10]);
    eprintln!("optimized translator: {:?}", optimized[10]);
    eprintln!("direct translator:    {:?}", direct[10]);

    assert_eq!(
        optimized[10], expected[10],
        "optimized translation is incorrect"
    );
    assert_eq!(direct[10], expected[10]);
    Ok(())
}

fn pass(what: &str) {
    println!("**** test {:?} passed. ****", what);
}

pub fn main() -> Result<()> {
    test_external_evaluators_real()?;
    pass("external real evaluator");

    test_external_evaluators_complex()?;
    pass("external complex evaluator");

    test_external_evaluators_real_simd()?;
    pass("external real simd evaluator");

    test_external_evaluators_complex_simd()?;
    pass("external complex simd evaluator");

    Ok(())
}