xlsynth-driver 0.41.0

Binary that integrates XLS capabilities into a driver program
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
140
141
142
143
144
145
146

// SPDX-License-Identifier: Apache-2.0

//! Tests for the gv-instance-csv driver subcommand.

use flate2::read::GzDecoder;
use std::fs::File;
use std::io::Read;
use std::process::Command;

/// Returns decompressed file as string.
fn read_gzipped_csv(path: &std::path::Path) -> String {
    let f = File::open(path).unwrap();
    let mut gz = GzDecoder::new(f);
    let mut s = String::new();
    gz.read_to_string(&mut s).expect("decompress csv.gz");
    s
}

#[test]
fn test_gv_instance_csv_minimal_netlist() {
    let netlist = r#"
module test (a, y);
    input a;
    output y;
    NAND2 inst1 (.A(a), .B(a), .Y(y));
    NOR2 inst2 (.A(a), .B(y), .Y(y));
endmodule
"#;
    let in_file = tempfile::NamedTempFile::new().unwrap();
    std::fs::write(in_file.path(), netlist).unwrap();
    let out_file = tempfile::NamedTempFile::new().unwrap();
    let exe = env!("CARGO_BIN_EXE_xlsynth-driver");
    let status = Command::new(exe)
        .arg("gv-instance-csv")
        .arg("--input")
        .arg(in_file.path())
        .arg("--output")
        .arg(out_file.path())
        .status()
        .expect("run driver");
    assert!(status.success(), "process failed: {status}");
    let s = read_gzipped_csv(out_file.path());
    // Header + rows: module_name,instance_name,cell_type\n
    let lines: Vec<_> = s.lines().collect();
    assert_eq!(lines.len(), 3, "should be 2 instances found plus header");
    assert_eq!(lines[0], "module_name,instance_name,cell_type");
    assert!(
        lines.iter().any(|&l| l == "test,inst1,NAND2"),
        "missing inst1"
    );
    assert!(
        lines.iter().any(|&l| l == "test,inst2,NOR2"),
        "missing inst2"
    );
}

#[test]
fn test_gv_instance_csv_feedthrough_module() {
    let netlist = r#"
module feedthrough (in, out);
    input in;
    output out;
    assign out = in;
endmodule

module top (a, y);
    input a;
    output y;
    wire w;
    feedthrough u_feed (.in(a), .out(w));
    NAND2 inst1 (.A(w), .B(a), .Y(y));
endmodule
"#;
    let in_file = tempfile::NamedTempFile::new().unwrap();
    std::fs::write(in_file.path(), netlist).unwrap();
    let out_file = tempfile::NamedTempFile::new().unwrap();
    let exe = env!("CARGO_BIN_EXE_xlsynth-driver");
    let status = Command::new(exe)
        .arg("gv-instance-csv")
        .arg("--input")
        .arg(in_file.path())
        .arg("--output")
        .arg(out_file.path())
        .status()
        .expect("run driver");
    assert!(status.success(), "process failed: {status}");
    let s = read_gzipped_csv(out_file.path());
    // Header + rows: module_name,instance_name,cell_type\n
    let lines: Vec<_> = s.lines().collect();
    assert_eq!(lines.len(), 3, "should be 2 instances found plus header");
    assert_eq!(lines[0], "module_name,instance_name,cell_type");
    assert!(
        lines.iter().any(|&l| l == "top,u_feed,feedthrough"),
        "missing u_feed"
    );
    assert!(
        lines.iter().any(|&l| l == "top,inst1,NAND2"),
        "missing inst1"
    );
}

#[test]
fn test_gv_instance_csv_feedthrough_module_bus() {
    let netlist = r#"
module feedthrough_bus (in, out);
    input [1:0] in;
    output [1:0] out;
    assign out[0] = in[0];
    assign out[1] = in[1];
endmodule

module top_bus (a, y);
    input [1:0] a;
    output [1:0] y;
    wire [1:0] w;
    feedthrough_bus u_feed (.in(a), .out(w));
    NAND2 inst1 (.A(w[0]), .B(a[1]), .Y(y[0]));
endmodule
"#;
    let in_file = tempfile::NamedTempFile::new().unwrap();
    std::fs::write(in_file.path(), netlist).unwrap();
    let out_file = tempfile::NamedTempFile::new().unwrap();
    let exe = env!("CARGO_BIN_EXE_xlsynth-driver");
    let status = Command::new(exe)
        .arg("gv-instance-csv")
        .arg("--input")
        .arg(in_file.path())
        .arg("--output")
        .arg(out_file.path())
        .status()
        .expect("run driver");
    assert!(status.success(), "process failed: {status}");
    let s = read_gzipped_csv(out_file.path());
    // Header + rows: module_name,instance_name,cell_type\n
    let lines: Vec<_> = s.lines().collect();
    assert_eq!(lines.len(), 3, "should be 2 instances found plus header");
    assert_eq!(lines[0], "module_name,instance_name,cell_type");
    assert!(
        lines.iter().any(|&l| l == "top_bus,u_feed,feedthrough_bus"),
        "missing u_feed"
    );
    assert!(
        lines.iter().any(|&l| l == "top_bus,inst1,NAND2"),
        "missing inst1"
    );
}