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Make use of wasmparser's features crate feature to disable feature testing entirely

blockedThe issue or PR is currently blocked.The issue or PR is currently blocked.

enhancementNew feature or requestNew feature or request

Status: Open.

#1901 In wasmi-labs/wasmi;

· Robbepop opened on Jun 21, 2026

Avoid unnecessary registers -> Slot spills

optimizationAn performance optimization issue.An performance optimization issue.

Status: Open.

#1900 In wasmi-labs/wasmi;

· Robbepop opened on Jun 21, 2026

Introduce an Args utility type for the Wasmi executor

cleanupCleans up some region of the codebase.Cleans up some region of the codebase.

tech-debtAn issue to resolve some technical debt.An issue to resolve some technical debt.

Status: Open.

#1892 In wasmi-labs/wasmi;

· Robbepop opened on Jun 17, 2026

Make it possible to peek the next Wasm operator in Wasmi's parser

enhancementNew feature or requestNew feature or request

experimentThe issue or PR is an experiment that could very well just fail.The issue or PR is an experiment that could very well just fail.

researchResearch intense work item.Research intense work item.

Status: Open.

#1891 In wasmi-labs/wasmi;

· Robbepop opened on Jun 17, 2026

Lower f{32,64}.copysign with an immediate rhs value

optimizationAn performance optimization issue.An performance optimization issue.

Status: Open.

#1887 In wasmi-labs/wasmi;

· Robbepop opened on Jun 17, 2026

Wasmi 1.0.9 panics when running out of fuel lazily translating functions in resumable calls (not during resumption)

bugSomething isn't workingSomething isn't working

Status: Open.

#1859 In wasmi-labs/wasmi;

· matthew-a-thomas opened on May 21, 2026

Use Rust's unstable rust-preserve-none ABI for execution handlers

experimentThe issue or PR is an experiment that could very well just fail.The issue or PR is an experiment that could very well just fail.

researchResearch intense work item.Research intense work item.

Status: Open.

#1835 In wasmi-labs/wasmi;

· Robbepop opened on Apr 7, 2026

Un-bloat Wasmi translation codegen

enhancementNew feature or requestNew feature or request

Status: Open.

#1797 In wasmi-labs/wasmi;

· Robbepop opened on Feb 17, 2026

Re-add copy operator fusion

optimizationAn performance optimization issue.An performance optimization issue.

Status: Open.

#1795 In wasmi-labs/wasmi;

· Robbepop opened on Feb 16, 2026

Add matches method to ValType and FuncType

wasmtime-mirrorIssue for a use case of a missing API that exists in Wasmtime.Issue for a use case of a missing API that exists in Wasmtime.

Status: Open.

#1746 In wasmi-labs/wasmi;

· Robbepop opened on Dec 20, 2025

Simplify simd load/store ISA

cleanupCleans up some region of the codebase.Cleans up some region of the codebase.

researchResearch intense work item.Research intense work item.

Status: Open.

#1703 In wasmi-labs/wasmi;

· Robbepop opened on Nov 24, 2025

Add support for Wasm module (de)serialization

optimizationAn performance optimization issue.An performance optimization issue.

researchResearch intense work item.Research intense work item.

Status: Open.

#1637 In wasmi-labs/wasmi;

· FedorSmirnov89 opened on Aug 14, 2025