v2.0.0-beta.10 - 2026/08/10

Added

• Added way to customize dynamic fuel metering. #2025
• Added stable fuel metering. #2013
  • This replaces Wasmi's old fuel metering that was tied to its internal bytecode.
  • The new stable fuel metering is tied to the input Wasm bytecode instead.
  • While less precise, it has the big advantages that it stays relatively stable
    and that it is the same technique that is also used in Wasmtime.
• Added more optimizations to make Wasmi execute even faster:
  • Massively improve performance across the board with fix that improves branch prediction. #2027
  • Re-use sp in Wasm calls. #2014
    • This improves performance of host calls primarily.
  • Add InstanceEntity pointer to WasmFuncEntity. #2018
    • This improves performance of call_indirect and call_imported.
  • Add special call_indirect operator variants for (table 0). #2019
    • This is very beneficial since more call_indirect operators work on (table 0).
  • Reduce tons of unnecessary indirections in Wasmi's executor:
    • PRs: #2023, #2015, #2020, #2022, #2024

Internal

• Add new sort-dyn benchmark test case to test call_indirect performance. #2017
• Simplify Wasmi users README listing. #2021