bytecodealliance/wasmtime v16.0.0

on GitHub

16.0.0

Released 2023-12-20.

Added

• Add yielding support in wasmtime_store_epoch_deadline_callback in the C API.
  #7476

• Support for the wasi_unstable module ("wasi preview0" canonically) has been
  added to the -Spreview2 support in the CLI.
  #7548

• The original module can now be obtained from an "instance pre" in the C API.
  #7572

• Usage of Mach ports on macOS can now be disabled in the C API.
  #7595

Changed

• The preview1-to-preview2 component adapters now import a smaller number of
  interfaces by default.
  #7543
  #7544

• Wasmtime and Cranelift now require Rust 1.72.0 to build.
  #7554

• The default world supported by wasmtime serve has been slimmed down to
  exactly what wasi:http/proxy specifies by default. Support for other WASI
  APIs can be included with the -S common command-line flag.
  #7597

• The wasmtime --version CLI output will now include date/commit information
  when Wasmtime is built from a git checkout.
  #7610

Fixed

• MPK support is now explicitly disabled on AMD-based CPUs since the
  implementation does not currently support it.
  #7513

• Initialization of a WebAssembly data segment with a negative offset is fixed
  to zero-extend the offset instead of sign-extend.
  #7559

• The reported offset of O_APPEND files in preview1 has been fixed.
  #7586

• MPK support does a better job of compacting memories to minimize virtual
  memory used.
  #7622

Cranelift

• Union node bitpacking has been fixed with egraph optimizations to ensure the
  minimal cost node is selected.
  #7465

• Equivalent-cost expressions now have ties broken with expression depth in
  egraphs to prefer "shallow" expression trees.
  #7456

• Long-and-narrow chains of expressions are now optimized into shallow-and-wide
  trees.
  #7466