Class Options

src/lib.rs:392–437

#[cfg_attr(feature = "clap", derive(clap::Args))]
#[non_exhaustive]
pub struct Options {
    /// Controls how moves are optimized after register allocation.
    #[cfg_attr(feature = "clap", clap(long, default_value = "global"))]
    pub move_optimization: MoveOptimizationLevel,

    /// Enable elimination of spills whose destination is never read.
    #[cfg_attr(
        feature = "clap",
        clap(
            long = "no-dead-spill-elimination",
            action = clap::ArgAction::SetFalse,
            help = "Disable the dead spill elimination pass"
        )
    )]
    pub dead_spill_elimination: bool,

    /// Selects the algorithm for live range splitting.
    #[cfg_attr(feature = "clap", clap(long, default_value = "linear"))]
    pub split_strategy: SplitStrategy,

    /// Selects the adjustment factor used for spill weight calculation.
    ///
    /// The ideal number is workload-dependent, but the default should be fine
    /// for most cases.
    #[cfg_attr(feature = "clap", clap(long, default_value = "200"))]
    pub spill_weight_adjust: u32,

    /// Scale applied to the spill cost of directly rematerializable target
    /// values with [`RematCost::CheaperThanMove`].
    ///
    /// [`RematCost::CheaperThanMove`]: crate::function::RematCost::CheaperThanMove
    #[cfg_attr(feature = "clap", clap(long, default_value = "0.2"))]
    pub direct_remat_cheaper_than_move_cost_scale: f32,

    /// Scale applied to the spill cost of directly rematerializable target
    /// values with [`RematCost::CheaperThanLoad`].
    ///
    /// [`RematCost::CheaperThanLoad`]: crate::function::RematCost::CheaperThanLoad
    #[cfg_attr(feature = "clap", clap(long, default_value = "0.25"))]
    pub direct_remat_cheaper_than_load_cost_scale: f32,

    /// Scale applied to the spill cost of indirectly rematerializable target
    /// values.
    #[cfg_attr(feature = "clap", clap(long, default_value = "0.3"))]
    pub indirect_remat_cost_scale: f32,
}

#[cfg(feature = "arbitrary")]
impl<'a> arbitrary::Arbitrary<'a> for Options {