a0318f36f0
This PR switches Cranelift over to the new register allocator, regalloc2. See [this document](https://gist.github.com/cfallin/08553421a91f150254fe878f67301801) for a summary of the design changes. This switchover has implications for core VCode/MachInst types and the lowering pass. Overall, this change brings improvements to both compile time and speed of generated code (runtime), as reported in #3942: ``` Benchmark Compilation (wallclock) Execution (wallclock) blake3-scalar 25% faster 28% faster blake3-simd no diff no diff meshoptimizer 19% faster 17% faster pulldown-cmark 17% faster no diff bz2 15% faster no diff SpiderMonkey, 21% faster 2% faster fib(30) clang.wasm 42% faster N/A ```
119 lines
3.5 KiB
Rust
119 lines
3.5 KiB
Rust
//! Cranelift code generation library.
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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(
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// Produces only a false positive:
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clippy::while_let_loop,
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// Produces many false positives, but did produce some valid lints, now fixed:
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clippy::needless_lifetimes,
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// Generated code makes some style transgressions, but readability doesn't suffer much:
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clippy::many_single_char_names,
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clippy::identity_op,
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clippy::needless_borrow,
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clippy::cast_lossless,
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clippy::unreadable_literal,
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clippy::assign_op_pattern,
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clippy::empty_line_after_outer_attr,
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// Hard to avoid in generated code:
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clippy::cognitive_complexity,
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clippy::too_many_arguments,
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// Code generator doesn't have a way to collapse identical arms:
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clippy::match_same_arms,
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// These are relatively minor style issues, but would be easy to fix:
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clippy::new_without_default,
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clippy::should_implement_trait,
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clippy::len_without_is_empty))]
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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::map_unwrap_or,
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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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// Various bits and pieces of this crate might only be used for one platform or
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// another, but it's not really too useful to learn about that all the time. On
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// CI we build at least one version of this crate with `--features all-arch`
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// which means we'll always detect truly dead code, otherwise if this is only
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// built for one platform we don't have to worry too much about trimming
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// everything down.
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#![cfg_attr(not(feature = "all-arch"), allow(dead_code))]
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#[allow(unused_imports)] // #[macro_use] is required for no_std
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#[macro_use]
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extern crate alloc;
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#[cfg(feature = "std")]
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#[macro_use]
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extern crate std;
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#[cfg(not(feature = "std"))]
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use hashbrown::{hash_map, HashMap, HashSet};
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#[cfg(feature = "std")]
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use std::collections::{hash_map, HashMap, HashSet};
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pub use crate::context::Context;
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pub use crate::value_label::{ValueLabelsRanges, ValueLocRange};
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pub use crate::verifier::verify_function;
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pub use crate::write::write_function;
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pub use cranelift_bforest as bforest;
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pub use cranelift_entity as entity;
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#[cfg(feature = "unwind")]
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pub use gimli;
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#[macro_use]
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mod machinst;
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pub mod binemit;
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pub mod cfg_printer;
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pub mod cursor;
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pub mod data_value;
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pub mod dbg;
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pub mod dominator_tree;
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pub mod flowgraph;
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pub mod ir;
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pub mod isa;
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pub mod loop_analysis;
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pub mod print_errors;
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pub mod settings;
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pub mod timing;
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pub mod verifier;
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pub mod write;
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pub use crate::entity::packed_option;
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pub use crate::machinst::buffer::{MachCallSite, MachReloc, MachSrcLoc, MachStackMap, MachTrap};
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pub use crate::machinst::TextSectionBuilder;
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mod bitset;
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mod constant_hash;
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mod context;
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mod dce;
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mod divconst_magic_numbers;
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mod fx;
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mod inst_predicates;
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mod iterators;
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mod legalizer;
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mod licm;
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mod nan_canonicalization;
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mod remove_constant_phis;
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mod result;
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mod scoped_hash_map;
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mod simple_gvn;
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mod simple_preopt;
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mod unreachable_code;
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mod value_label;
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#[cfg(feature = "souper-harvest")]
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mod souper_harvest;
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pub use crate::result::{CodegenError, CodegenResult};
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include!(concat!(env!("OUT_DIR"), "/version.rs"));
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