cranelift

rust jit wasm webassembly runtime wasi cranelift sandbox wasmtime

Alex Crichton fa41d13141 Improve codegen for enums with many cases (#9122 ) * Improve codegen for enums with many cases This commit improves the compile time of generating bindings for enums with many cases in them (e.g. 1000+). This is done by optimizing for enums specifically rather than handling them generically like other variants which can reduce the amount of code going into rustc to O(1) instead of O(N) with the number of cases. This in turn can greatly reduce compile time. The tradeoff made in this commit is that enums are now required to have `#[repr(...)]` annotations along with no Rust-level discriminants specified. This enables the use of a `transmute` to lift a discriminant into Rust with a simple bounds check. Previously this was one large `match` statement. Closes #9081 * Fix some tests * Add repr tag in fuzzing * Fix syntax for Rust 1.78	3 months ago
..
src	Improve codegen for enums with many cases (#9122)	3 months ago
Cargo.toml	Add `rust-version.workspace = true` to all crates (#9112)	3 months ago

Improve codegen for enums with many cases (#9122 )

* Improve codegen for enums with many cases

This commit improves the compile time of generating bindings for enums
with many cases in them (e.g. 1000+). This is done by optimizing for
enums specifically rather than handling them generically like other
variants which can reduce the amount of code going into rustc to O(1)
instead of O(N) with the number of cases. This in turn can greatly
reduce compile time.

The tradeoff made in this commit is that enums are now required to have
`#[repr(...)]` annotations along with no Rust-level discriminants
specified. This enables the use of a `transmute` to lift a discriminant
into Rust with a simple bounds check. Previously this was one large
`match` statement.

Closes #9081

* Fix some tests

* Add repr tag in fuzzing

* Fix syntax for Rust 1.78

3 months ago

src

Improve codegen for enums with many cases (#9122)

3 months ago

Cargo.toml

Add `rust-version.workspace = true` to all crates (#9112)

3 months ago