* Remove the `Flags` type from `Config` API This commit removes the final foreign type from the `Config` API in the `wasmtime` crate. The cranelift `Flags` type is now expanded into various options on the `Config` structure itself, all prefixed with `cranelift_` since they're only relevant to the Cranelift backend. The various changes here were: * The `avoid_div_traps` feature is enabled by default since it seemed that was done anywhere anyway. * Enabling the wasm SIMD feature enables the requisite features in Cranelift as well. * A method for enabling the debug verifier has been added. * A method for configuring the Cranelift optimization level, as well as a corresponding enumeration, has been added. * Assert that `Config` is both `Send` and `Sync`
This is the wasmtime-environ crate, which contains the implementations
of the ModuleEnvironment and FuncEnvironment traits from
cranelift-wasm. They effectively
implement an ABI for basic wasm compilation that defines how linear memories
are allocated, how indirect calls work, and other details. They can be used
for JITing, native object files, or other purposes.