48 lines
1.4 KiB
Rust
48 lines
1.4 KiB
Rust
//! Performs early-stage optimizations on Cranelift IR.
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#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
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#![warn(unused_import_braces)]
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#![cfg_attr(feature = "std", deny(unstable_features))]
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#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
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#![cfg_attr(feature = "cargo-clippy", allow(clippy::new_without_default))]
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#![cfg_attr(
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feature = "cargo-clippy",
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warn(
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clippy::float_arithmetic,
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clippy::mut_mut,
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clippy::nonminimal_bool,
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clippy::option_map_unwrap_or,
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clippy::option_map_unwrap_or_else,
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clippy::print_stdout,
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clippy::unicode_not_nfc,
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clippy::use_self
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)
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)]
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#![no_std]
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mod constant_folding;
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use cranelift_codegen::{isa::TargetIsa, settings::FlagsOrIsa, CodegenResult, Context};
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/// Optimize the function with available optimizations.
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///
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/// Since this can be resource intensive (and code-size inflating),
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/// it is separated from `Context::compile` to allow DCE to remove it
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/// if it's not used.
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pub fn optimize(ctx: &mut Context, isa: &dyn TargetIsa) -> CodegenResult<()> {
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ctx.verify_if(isa)?;
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fold_constants(ctx, isa)?;
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Ok(())
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}
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/// Fold constants
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pub fn fold_constants<'a, FOI>(ctx: &mut Context, fisa: FOI) -> CodegenResult<()>
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where
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FOI: Into<FlagsOrIsa<'a>>,
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{
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constant_folding::fold_constants(&mut ctx.func);
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ctx.verify_if(fisa)?;
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Ok(())
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}
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