9b1a1e1d95
If `-o -` or `--emit KIND=-` is provided, output will be written to stdout instead. Binary output (`obj`, `llvm-bc`, `link` and `metadata`) being written this way will result in an error unless stdout is not a tty. Multiple output types going to stdout will trigger an error too, as they will all be mixded together.
35 lines
893 B
Rust
35 lines
893 B
Rust
//! This pass just dumps MIR at a specified point.
|
|
|
|
use std::fs::File;
|
|
use std::io;
|
|
|
|
use crate::MirPass;
|
|
use rustc_middle::mir::write_mir_pretty;
|
|
use rustc_middle::mir::Body;
|
|
use rustc_middle::ty::TyCtxt;
|
|
use rustc_session::config::{OutFileName, OutputType};
|
|
|
|
pub struct Marker(pub &'static str);
|
|
|
|
impl<'tcx> MirPass<'tcx> for Marker {
|
|
fn name(&self) -> &'static str {
|
|
self.0
|
|
}
|
|
|
|
fn run_pass(&self, _tcx: TyCtxt<'tcx>, _body: &mut Body<'tcx>) {}
|
|
}
|
|
|
|
pub fn emit_mir(tcx: TyCtxt<'_>) -> io::Result<()> {
|
|
match tcx.output_filenames(()).path(OutputType::Mir) {
|
|
OutFileName::Stdout => {
|
|
let mut f = io::stdout();
|
|
write_mir_pretty(tcx, None, &mut f)?;
|
|
}
|
|
OutFileName::Real(path) => {
|
|
let mut f = io::BufWriter::new(File::create(&path)?);
|
|
write_mir_pretty(tcx, None, &mut f)?;
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|