Function run_passes

pub(crate) fn run_passes<'tcx>(
    tcx: TyCtxt<'tcx>,
    body: &mut Body<'tcx>,
    passes: &[&dyn MirPass<'tcx>],
    phase_change: Option<MirPhase>,
    optimizations: Optimizations,
)

The optional phase_change is applied after executing all the passes, if present