WebAssembly Bulk Memory Operations

Adds a memmove type opcode to WebAssembly and enhances existing data sections to support importable base.This allows better optimization of large memcpy/memmove operations. Data section improvement will make shared libraries work better, especially with threads.



Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 75
  • Chrome for Android release 75
  • Android WebView release 75

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Intent to Prototype url

Intent to Prototype thread

Last updated on 2020-06-02