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CHANGELOG.md

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Changelog

This document describes changes between tagged Binaryen versions.

To browse or download snapshots of old tagged versions, visit https://github.com/WebAssembly/binaryen/releases.

Not all changes are documented here. In particular, new features, user-oriented fixes, options, command-line parameters, usage changes, deprecations, significant internal modifications and optimizations etc. generally deserve a mention. To examine the full set of changes between versions, visit the link to full changeset diff at the end of each section.

Current Trunk

  • Added load_splat SIMD instructions
  • Binaryen.js instruction API changes:
    • notify -> atomic.notify
    • i32.wait / i64.wait -> i32.atomic.wait / i64.atomic.wait
  • Binaryen.js: flags argument in setMemory function is removed.
  • atomic.fence instruction support is added.
  • wasm-emscripten-finalize: Don't rely on name section being present in the input. Use the exported names for things instead.
  • Added mutable parameter to BinaryenAddGlobalImport.
  • Replace BinaryenSIMDBitselect* with BinaryenSIMDTernary* in the C API and add qfma/qfms instructions.
  • Added offset parameter to BinaryenSetFunctionTable.

v88

  • wasm-emscripten-finalize: For -pie binaries that import a mutable stack pointer we internalize this an import it as immutable.
  • The tail-call feature including the return_call and return_call_indirect instructions is ready to use.

v87

  • Rename Bysyncify => Asyncify

v86

  • The --initial-stack-pointer argument to wasm-emscripten-finalize no longer has any effect. It will be removed completely in future release.

v85

  • Wast file parsing rules now don't allow a few invalid formats for typeuses that were previously allowed. Typeuse entries should follow this format, meaning they should have (type) -> (param) -> (result) order if more than one of them exist. 
    typeuse ::= (type index|name)+ |
            (type index|name)+ (param ..)* (result ..)* |
            (param ..)* (result ..)*
    Also, all (local) nodes in function definition should be after all typeuse elements.
  • Removed APIs related to deprecated instruction names in Binaryen.js:
    • get_local / getLocal
    • set_local / setLocal
    • tee_local / teeLocal
    • get_global / getGlobal
    • set_global / setGlobal
    • current_memory / currentMemory
    • grow_memory / growMemory They are now available as their new instruction names: local.get, local.set, local.tee, global.get, global.set, memory.size, and memory.grow.
  • Add feature handling to the C/JS API with no feature enabled by default.

v84

  • Generate dynCall thunks for any signatures used in "invoke" calls.

v81

  • Fix AsmConstWalker handling of string address in arg0 with -fPIC code

v80

  • Change default feature set in the absence of a target features section from all features to MVP.

v79

  • Improve support for side modules

v78

  • Add namedGlobals to metadata output of wasm-emscripten-finalize
  • Add support for llvm PIC code.
  • Add --side-module option to wasm-emscripten-finalize.
  • Add segmentPassive argument to BinaryenSetMemory for marking segments passive.
  • Make -o - print to stdout instead of a file named "-".

v73

  • Remove wasm-merge tool.

v73

v55

  • RelooperCreate in the C API now has a Module parameter, and RelooperRenderAndDispose does not.
    • The JS API now has the Relooper constructor receive the Module.
  • Relooper: Condition properties on Branches must not have side effects.

older

  • BinaryenSetFunctionTable in the C API no longer accepts an array of functions, instead it accepts an array of function names, const char** funcNames. Previously, you could not include imported functions because they are of type BinaryenImportRef instead of BinaryenFunctionRef. #1650

  • BinaryenSetFunctionTable in the C API now expects the initial and maximum table size as additional parameters, like BinaryenSetMemory does for pages, so tables can be grown dynamically. #1687

  • Add shared parameters to BinaryenAddMemoryImport and BinaryenSetMemory, to support a shared memory. #1686