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11 changes: 6 additions & 5 deletions src/tools/miropt-test-tools/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -98,11 +98,12 @@ pub fn files_for_miropt_test(
from_file = format!("{}.{}.mir", test_name, first_pass);
to_file = Some(second_file);
} else {
let ext_re = regex::Regex::new(r#"(\.(mir|dot|html))$"#).unwrap();
let cap = ext_re
.captures_iter(test_name)
.next()
.expect("test_name has an invalid extension");
// Allow-list for file extensions that can be produced by MIR dumps.
// Other extensions can be added here, as needed by new dump flags.
let ext_re = regex::Regex::new(r#"(\.(mir|dot))$"#).unwrap();
let cap = ext_re.captures_iter(test_name).next().unwrap_or_else(|| {
panic!("in {testfile:?}:\nEMIT_MIR has an unrecognized extension: {test_name}")
});
let extension = cap.get(1).unwrap().as_str();

expected_file =
Expand Down