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* Added BinaryenModulePrintAsmjs (using wasm2asm) + Module#emitAsmjs JS binding
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may be unreachable
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to make this practical
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threads proposal (#1082)
Also leave a stub (but valid) visitAtomicRMW in the visitor template so that not all visitors need to implement this function yet.
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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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* improve dce to handle more cases of nested unreachable code, in particular, when the child is unreachable in type but not an actual Unreachable node, e.g. if it's a br. in that case, we just need to verify that the br is not to us where we are a block or loop
* handle unreachable switch conditions in dce
* handle dce of br condition which is unreachable, and host arguments
* handle dce of block i32 etc. which is actually unreachable
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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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* 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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Most module walkers use PostWalker<T, Visitor<T>>, let that pattern be
expressed as simply PostWalker<T>
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* an unreachable block is one with an unreachable child, plus no breaks
* document new difference between binaryen IR and wasm
* fix relooper missing finalize
* add a bunch of tests
* don't assume that test/*.wast files print to themselves exactly; print to from.wast. this allows wast tests with comments in them
* emit unreachable blocks as (block .. unreachable) unreachable
* if without else and unreachable ifTrue is still not unreachable, it should be none
* update wasm.js
* cleanups
* empty blocks have none type
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Also moves the bulk of the code in wasm-s-parser into a cpp file.
Allows namespace and #include cleanups, and improves j4 compile time by 20%.
Should also make any future parser changes easier and more localized.
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