version_76

Add feature options to emscripten metadata (#1982)

Emscripten runs wasm-emscripten-finalize before running wasm-opt, so the target features section is stripped out before optimizations are run. One option would have been to add another wasm-opt invocation at the very end to strip the target features section, but dumping the features as metadata avoids the extra tool invocation. In the long run, it would be nice to have only as single binaryen invocation to do all the work that needs doing.

version_75

wasm-emscripten-finalize: add namedGlobals to output metadata (#1979)

This key is used by emscripten when building with MAIN_MODULE in order
to export global variables from the main module to the side modules.

version_74

Add Windows binary releases through AppVeyor (#1700)

This commit tweaks the AppVeyor configuration to publish 64 and 32-bit
artifacts as part of the normal release builds. Configuration was also
added to be sure to compile code with `/MT` on MSVC to ensure that the
released artifacts depend on as few DLLs as possible, hopefully making
them as portable as possible.

cc #1695

1.38.30: Discover and run unit tests from check.py (#1948)

unittest is Python's standard testing framework, so this change allows
arbitrary tests to be written without introducing any new dependencies
or code in check.py. A new test that was not possible to write before
is also included. It is the first of many.

version_73

Do not erase internal debug into in --strip-producers - the pass was …

1.38.29

Optimize away sets of the same local (#1940)

version_72

Fix getExitingBranches, which had |targets| instead of |curr->targets…

version_71

Consistently optimize small added constants into load/store offsets (…

version_70: Optimize normally with debug info (#1927)

* optimize normally with debug info - some of it may be removed, but that's the price of higher optimization levels, and by optimizing normally in profiling and -g2 etc. builds they are more comparable to normal ones, yielding better data
* copy debug locations automatically in replaceCurrent in wasm-traversal, so optimization passes at least by default will preserve debuggability

version_69: Dead return value elimination in DeadArgumentElimination (#1917)

* Finds functions whose return value is always dropped, and removes the return.
* Run multiple iterations of the pass, as one can enable others.
* Do not run DeadArgumentElimination at all if debug info is present (with these improvements, it became much more likely to destroy debug info).

Saves 2.5% on hello world, because of some simple libc calls.