use crate::error::Result;
use super::functions::XlaPass;
use super::types::{CopyEliminationPass, PassStatistics, XlaComputation, XlaConfig};
impl XlaPass for CopyEliminationPass {
fn name(&self) -> &str {
"copy-elimination"
}
fn run(&self, computation: &mut XlaComputation) -> Result<PassStatistics> {
let mut stats = PassStatistics::default();
if !self.should_run(&computation.config) {
return Ok(stats);
}
let eliminable_copies = Self::count_eliminable_copies(computation);
if eliminable_copies > 0 {
stats.nodes_removed = eliminable_copies;
}
Ok(stats)
}
fn should_run(&self, config: &XlaConfig) -> bool {
config.optimization_level >= 1
}
}