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* wasm2js: Stop emitting nan and infinity (#5391)Will Cohen2023-01-041-2/+0
| | | | | | | As noted in #4739, legacy language emitting nan and infinity exists, with the observation that it can be removed once asm.js is no longer used and global NaN is available. This commit removes that asm.js-specific code accordingly.
* wasm2js: Support for flexible module import naming (#5114)Sam Clegg2022-10-051-3/+3
| | | | | | | | The previous code was making emscripten-specific assumptions about imports basically all coming from the `env` module. I can't find a way to make this backwards compatible so may do a combined roll with the emscripten-side change: https://github.com/emscripten-core/emscripten/pull/17806
* wasm2js: Don't assume that `env.abort` can always be impored. (#5049)Sam Clegg2022-09-161-1/+0
| | | | | | This import was being injected and then used to implement trapping. Rather than injecting an import that doesn't exist in the original module we instead use the existing mechanism to implement this as an internal helper.
* wasm2js: Have instantiate function take standard import object (#5018)Sam Clegg2022-09-141-3/+4
| | | | | | | | | | | Previously we were assuming asmLibraryArg which is what emscripten passes as the `env` import object but using this method is more flexible and should allow wasm2js to work with import that are not all form a single object. The slight size increase here is just temporary until emscripten gets updated. See https://github.com/emscripten-core/emscripten/pull/17737
* wasm2js: Declare data segments before calling asmFunc (#3337)Sam Clegg2020-11-111-25/+28
| | | | | | | | | This is because we maybe need to reference the segments during the start function. For example in the case of pthreads we conditionally load passive segments during start. Tested in emscripten with: tests/runner.py wasm2js1
* wasm2js: Support for exported memory (#3323)Sam Clegg2020-11-101-4/+5
| | | | | The asmFunc now sets the outer scope's `bufferView` variable as well as its own internal views.
* [wasm2js] Use native JavaScript Math.trunc (#3329)Max Graey2020-11-101-0/+1
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* Canonicalize subtraction with constant on the right to addition (#3321)Max Graey2020-11-101-1/+1
| | | | | | | Using addition in more places is better for gzip, and helps simplify the optimizer as well. Add a FinalOptimizer phase to do optimizations like our signed LEB tweaks, to reduce binary size in the rare case when we do want a subtraction.
* wasm2js: Remove global dict arguments to asmFunc (#3325)Sam Clegg2020-11-051-36/+21
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* wasm2js: override incoming memory's grow method (#3185)Sam Clegg2020-09-301-1/+2
| | | | | | | | | | This will allow for the completely removal of `__growWasmMemory` as a followup. We currently unconditionally generate this function in `generateMemoryGrowthFunction`. See #3180
* wasm2js: Support exported tables (#3152)Sam Clegg2020-09-211-3/+1
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* wasm2js: Bulk memory support (#2923)Alon Zakai2020-06-221-2/+3
| | | | | | | | | | | | | | 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).
* Micro-optimize base64Decode (#2897)juj2020-06-061-7/+5
| | | | | * Micro-optimize base64Decode * Update test expectations
* Fix missing newline after // EMSCRIPTEN_START_FUNCS and // ↵juj2020-02-101-2/+4
| | | | | | | | | | EMSCRIPTEN_END_FUNCS markers. (#2626) * Fix missing newline after // EMSCRIPTEN_START_FUNCS and // EMSCRIPTEN_END_FUNCS markers. * Flake * Update tests
* Optimize base64 decoding (#2623)juj2020-02-091-17/+21
| | | | | | | | | | | | | | * 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
* [wasm2js] Fix memory.size (#2330)Alon Zakai2019-09-051-0/+4
| | | | | | | 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...).
* Followup to workaround for minification of wasm2js mem init (#2318)Brion Vibber2019-08-301-3/+3
| | | | | | | | | | | | | 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.
* Stop emitting "almost asm" in wasm2js output (#2221)Alon Zakai2019-07-121-1/+0
| | | We don't ever emit "use asm" anymore, so this similar annotation is not really useful, it just increases size.
* wasm2js: export memory growth function only if memory growth is enabled (#2194)Alon Zakai2019-07-031-0/+79
Previously we tried to export it if the memory was exported, even if growth was not on, which caused an error.
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