fn check_custom_mir<S: Stage>(
cx: &mut AcceptContext<'_, '_, S>,
dialect: Option<(MirDialect, Span)>,
phase: Option<(MirPhase, Span)>,
failed: &mut bool,
)fn check_custom_mir<S: Stage>(
cx: &mut AcceptContext<'_, '_, S>,
dialect: Option<(MirDialect, Span)>,
phase: Option<(MirPhase, Span)>,
failed: &mut bool,
)