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馃洡 Tail call #17

binji opened this Issue Oct 16, 2018 · 0 comments


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binji commented Oct 16, 2018

This is a tracking issue for a post-MVP feature
It will be updated as the issue progresses.

Topic Tail call
Champion Andreas Rossberg @rossberg
Status in progress
Phase Feature proposal
Linked issues WebAssembly/design#936, WebAssembly/design#189, WebAssembly/design#484,
Linked repositories


  • Currently, the Wasm design explicitly forbids tail call optimisations

  • Want support to enable

    • the correct and efficient implementations of languages that require tail call elimination
    • the compilation of control constructs that can be implemented with it (e.g., forms of coroutines, continuations)
    • compilation and optimization techniques that require it (e.g., dynamic recompilation, tracing, CPS)
    • other sorts of computation being expressed as Wasm functions, e.g., FSMs
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