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Add IR, wast and binary support for atomic loads and stores.
Currently all IR generated by means other than parsing wast and binary files always generates non-atomic accesses, and optimizations have not yet been made aware of atomics, so they are certainly not ready to be used yet.
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Begin to implement wasm threading proposal in https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md
This PR just has shared memory attribute with wast and binary support.
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This PR adds global variable support (addGlobal, getGlobal, setGlobal), host operations (currentMemory, growMemory), a few utility functions (removeImport, removeExport, getFunctionTypeBySignature with the latter being scheduled for removal once a better alternative is in place) and it introduces an additional argument to specify the result type in BinaryenBlock (effectively breaking the C-API but retaining previous behaviour by introducing the BinaryenUndefined() type for this purpose). Additionally, it enables compilation with exception support in build-js.sh as exceptions are thrown and caught when optimizing endless loops, intentionally resulting in an unreachable opcode. Affected test cases have been updated accordingly.
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(#1017)
* Extends wasm-as, wasm-dis and s2wasm to consume debug locations.
* Exports source map from asm2wasm
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* fix type of drop, set_local, set_global, load, etc: when operand is unreachable, so is the node itself
* support binary tests properly in test/passes
* fix unreachable typing of blocks with no name and an unreachable child
* fix continue emitting in asm2wasm
* properly handle emitting of unreachable load
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binary with either side unreachable - then they are unreachable. this makes our usage of the unreachable type consistent
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wasm-merge tool: combines two wasm files into a larger one, handling collisions, and aware of the dynamic linking conventions. it does not do full static linking, but may eventually.
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Rather than storing debug info as text annotations, store explicit file and line information. This will make it easier to experiment with outputting other serializations or representations (e.g. source maps), and will allow outputting debug info for binaries as well.
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* Move WasmType function implementations to wasm.cpp
* Move Literal methods to wasm.cpp
* Reorder wasm.cpp shared constants back to top
* Move expression functions to wasm.cpp
* Finish moving things to wasm.cpp
* Split out Literal into its own .h/.cpp. Also factor out common wasm-type module
* Remove unneeded/transitive includes from wasm.h
* Add comment to try/check methods
* Rename tryX/checkX methods to getXOrNull
* Add missing include that should fix appveyor build breakage
* More appveyor
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* Fully handle EM_ASM in s2wasm
* Iterate with size_ts, remember to erase from importsMap as well
* Fix dot_s test EM_ASM signatures
* Move Name out to its own file, support/name.h
* Move removeImportsWithSubstring out of Module class
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else (#915)
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* parse file/line comments in asm.js into debug intrinsics
* convert debug intrinsics into annotations, and print them
* ignore --debuginfo if not emitting text, as wasm binaries don't support that yet
* emit full debug info when -g and emitting text; when -g and emitting binary, all we can do is the Names section
* update wasm.js
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TempRet0 if needed (otherwise we might remove it before we use it)
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Previously the Print pass searched the imports for a table import and skipped printing a local table declaration if found. Instead this refactors to make importation explicit, and also create importation records (previously we were inconsistent about whether such records were created in the IR depending on the wast syntax).
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Refine tables to explicitly exist or not. Previously they were printed
or encoded if it had any segments, or an initial or max size. However
tables can be defined but empty, so we had a special hack that defined
an empty segment when we really just wanted an empty table. Now, just
make the existence explicit.
Update Function table encoding for 0xc (Table and Element sections)
Add end opcodes after function bodies (these are consumed by
getMaybeBlock with the same behavior that it had before when it reached
the function end, so no explicit decode)
Update call_indirect encoding for 0xc (no arity, call target is last)
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* type check using block/loop/if types provided in text and binary formats.
* print if and loop sigs which were missing.
* remove dsl from OptimizeInstructions as after those changes it needs rethinking.
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consistent with refering to other global objects; e.g. this avoids ordering issues with imported vs non-imported globals
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presence, and eliminate explicit index counter (#633)
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Adds support for aliases to objects, to go along with the existing support for aliases to functions.
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module, which would break consistency and make some parallel passes tricky (#568)
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