34 lines
867 B
Rust
34 lines
867 B
Rust
//! The `print-cfg` sub-command.
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//!
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//! Read a series of Cranelift IR files and print their control flow graphs
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//! in graphviz format.
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use cranelift_codegen::cfg_printer::CFGPrinter;
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use cranelift_reader::parse_functions;
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use utils::read_to_string;
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use CommandResult;
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pub fn run(files: &[String]) -> CommandResult {
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for (i, f) in files.into_iter().enumerate() {
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if i != 0 {
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println!();
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}
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print_cfg(f)?
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}
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Ok(())
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}
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fn print_cfg(filename: &str) -> CommandResult {
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let buffer = read_to_string(filename).map_err(|e| format!("{}: {}", filename, e))?;
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let items = parse_functions(&buffer).map_err(|e| format!("{}: {}", filename, e))?;
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for (idx, func) in items.into_iter().enumerate() {
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if idx != 0 {
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println!();
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}
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print!("{}", CFGPrinter::new(&func));
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}
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Ok(())
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}
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