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3.3 KiB
3.3 KiB
WebAssembly Proposals Support
The following table summarizes Wasmtime's support for WebAssembly proposals as
well as the command line flag and wasmtime::Config method you can
use to enable or disable support for a proposal.
If a proposal is not listed, then it is not supported by Wasmtime.
Wasmtime will never enable a proposal by default unless it has reached phase 4 of the WebAssembly standardizations process and its implementation in Wasmtime has been thoroughly vetted.
| WebAssembly Proposal | Supported in Wasmtime? | Command Line Flag | Config Method |
|---|---|---|---|
| Import and Export Mutable Globals | Yes. Always enabled. |
(none) | (none) |
| Sign-Extension Operations | Yes. Always enabled. |
(none) | (none) |
| Non-Trapping Float-to-Int Conversions | Yes. Always enabled. |
(none) | (none) |
| Multi-Value | Yes. Enabled by default. |
--enable-multi-value |
wasm_multi_value |
| Bulk Memory Operations | Yes. Enabled by default. |
--enable-bulk-memory |
wasm_bulk_memory |
| Reference Types | Yes. Enabled by default on x86_64. Aarch64 support in progress. |
--enable-reference-types |
wasm_reference_types |
| Fixed-Width SIMD | In progress. | --enable-simd |
wasm_simd |
| Threads and Atomics | In progress. | --enable-threads |
wasm_threads |