This adds benchmarks around module instantiation using criterion. Both the default (i.e. on-demand) and pooling allocators are tested sequentially and in parallel using a thread pool. Instantiation is tested with an empty module, a module with a single page linear memory, a larger linear memory with a data initializer, and a "hello world" Rust WASI program.
This is the wasmtime-jit crate, which contains JIT-based execution
for wasm, using the wasm ABI defined by wasmtime-environ and the
runtime support provided by wasmtime-runtime.
Most users will want to use the main wasmtime crate instead of using this
crate directly.