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Adds a special helper functions for data.drop etc., as unlike most
wasm instructions these are too big to emit inline.
Track passive segments at runtime in var memorySegments
whose indexes are the segment indexes.
Emit var bufferView even if the memory exists even without
memory segments, as we do still need the view in order to
operate on it.
Also adds a few constants for atomics that will be useful in future
PRs (as this PR updates the constant lists anyhow).
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* Micro-optimize base64Decode
* Update test expectations
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* Optimize base64 decoding (about 7x-10x faster and temporary garbage-free compared to the original version)
* new Uint8Array
* Reuse Uint8Array view
* Fix end handling
* Code format
* Update tests
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We emitted the __wasm_memory_size function only when memory growth was enabled, but it can be used without that too.
In theory we could only emit it if either memory growth or memory.size is used, but I think we can expect JS minifiers to do that later.
Also fix a test suite bug - the check/auto_update script didn't run all the wasm2js tests when you run it with argument wasm2js (it used that as the list of tests, instead of the list of files, which confused me here for a while...).
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Emscripten's minifier mis-minifies a couple bits in the memory
init function that's used with wasm2js when not using an external
memory init file:
https://github.com/emscripten-core/emscripten/issues/8886
Previous fix worked around the bug in one place but failed to
account for another. Have now confirmed that it works with this
change in place.
Updated test cases to match.
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We don't ever emit "use asm" anymore, so this similar annotation is not really useful, it just increases size.
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* Workaround for wasm2js output minification issue with emscripten
When using emscripten with -O2 and --memory-init-file 0, the
JS minification breaks on this function for memory initialization
setup, causing an exception to be thrown during module setup.
Moving from two 'var' declarations for the same variable to one
should avoid hitting this with no change in functionality (the
var gets hoisted anyway).
https://github.com/emscripten-core/emscripten/issues/8886
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When loading a boolean, prefer the signed heap (which is more commonly used, and may be faster).
We never use HEAPU32 (HEAP32 is always enough), just remove it.
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We flatten for the i64 lowering etc. passes, and it is worth optimizing afterwards, to clean up stuff they created. That is run if the user ran wasm2js with an optimization level (like wasm2js -O3).
Split the test files to check both optimized and unoptimized code.
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