cranelift_filetests/
test_print_cfg.rs

1//! The `print-cfg` sub-command.
2//!
3//! Read a series of Cranelift IR files and print their control flow graphs
4//! in graphviz format.
5
6use std::borrow::Cow;
7
8use crate::subtest::{self, Context, SubTest};
9use cranelift_codegen::cfg_printer::CFGPrinter;
10use cranelift_codegen::ir::Function;
11use cranelift_reader::TestCommand;
12
13/// Object implementing the `test print-cfg` sub-test.
14struct TestPrintCfg;
15
16pub fn subtest(parsed: &TestCommand) -> anyhow::Result<Box<dyn SubTest>> {
17    assert_eq!(parsed.command, "print-cfg");
18    if !parsed.options.is_empty() {
19        anyhow::bail!("No options allowed on {}", parsed);
20    }
21    Ok(Box::new(TestPrintCfg))
22}
23
24impl SubTest for TestPrintCfg {
25    fn name(&self) -> &'static str {
26        "print-cfg"
27    }
28
29    fn needs_verifier(&self) -> bool {
30        false
31    }
32
33    fn run(&self, func: Cow<Function>, context: &Context) -> anyhow::Result<()> {
34        subtest::run_filecheck(&CFGPrinter::new(&func).to_string(), context)
35    }
36}
cranelift_filetests/test_print_cfg.rs

cranelift_filetests/
test_print_cfg.rs
