Function cranelift_codegen::timing::preopt

pub fn preopt() -> TimingToken

Pre-legalization rewriting

Examples found in repository

src/simple_preopt.rs (line 914)

pub fn do_preopt(func: &mut Function, cfg: &mut ControlFlowGraph, isa: &dyn TargetIsa) {
    let _tt = timing::preopt();

    let mut pos = FuncCursor::new(func);
    let native_word_width = isa.pointer_bytes() as u32;
    let mut optimizer = simplify::peephole_optimizer(isa);

    while let Some(block) = pos.next_block() {
        while let Some(inst) = pos.next_inst() {
            simplify::apply_all(&mut optimizer, &mut pos, inst, native_word_width);

            // Try to transform divide-by-constant into simpler operations.
            if let Some(divrem_info) = get_div_info(inst, &pos.func.dfg) {
                do_divrem_transformation(&divrem_info, &mut pos, inst);
                continue;
            }

            branch_order(&mut pos, cfg, block, inst);
        }
    }
}