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* optimize wasm reading: use a set of the breaks we've seen, don't rescan blocks to see if they have breaks to them
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* don't emit a toplevel block if we don't need to, as in wasm it is a list context
* don't create unnecessary blocks in wasm reading
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These are not atomic operations, but are added with the atomic operations to keep from having to define atomic versions of all the sign-extending loads (an atomic zero-extending load + signext operation can be used instead).
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validation that was from when we differentiated reachable from unreachable breaks (#1166)
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According to spec at https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md#wait-and-wake-operators
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Ignoring unreachable code in wasm binaries lets us avoid corner cases with unstructured code in wasm binaries that is a poor fit for Binaryen's structured IR.
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* emit optimal-size LEBs in section/subsection/function body sizes, instead of preallocating 5 bytes
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unreachable
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Emit valid wasm binaries even for corner cases of unreachable code.
* emit an unreachable after a node that pushes a value that has unreachable type (where wasm type checking would have pushed a concrete type)
* conversely, as a hack, emulate the wasm polymorphic stack mode by not emptying the stack when it has one element and that element is unreachable. this lets further pops work (all returning an unreachable element)
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unreachable stacky code which may introduce concrete elements in non-final block positoins
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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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* show a clear error on nulls in inline strings (which we don't support, and in general are not seen in practice, but are technically valid wasm) in binary format reading
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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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Fixes #1059
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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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* values cannot flow through an if without an else, they never return a value
* check pass tests in pass-debug mode too
* add missing finalization in binary reading
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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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being named, and colliding with others' original names (#994)
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* properly catch a bunch of possible parse errors, found by afl-fuzz
* clean up wasm-interpreter, use WASM_UNREACHABLE instead of abort
* detect duplicate names in function names section
* detect duplicate export names
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See https://github.com/WebAssembly/binaryen/issues/914.
* extensible name section support: read function names, too
* c-api-unused-mem.txt: change expected size to match new name section
* * check subsection size matches
* print warning for unknown name subsections (including the local
section)
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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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else (#915)
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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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Fix AngryBots parsing
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Mark memory as existing when it is created in the C API
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* handle stacky code in binaries, using a block+local
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Dynamic linking
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changed in the spec
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mapping (similar to Names section, but external)
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* Renumber opcodes for 0xd
* Unified type encoding
* Add reserved flags fields to host instructions and call_indirect
* Rename flags->reserved
* Fix line numbers in wast parser
Also don't throw if the memory is defined in the same Element as the
export of memory (the validity is checked later anyway).
* Skip spec binary.wast
The spec testsuite is still on 0xc, so 0xd doesn't match. In order to
update to 0xd we need to implement some additional functionality for the
import test, namely (register)
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we must handle float literals carefully to not change their sign bit on some platforms/compilers, and that commit made relevant functions non-inline which hit a bug (#801)
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