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When IRBuilder builds an empty non-block scope such as a function body,
an if arm, a try block, etc, it needs to produce some expression to
represent the empty contents. Previously it produced a nop, but change
it to produce an empty block instead. The binary writer and printer have
special logic to elide empty blocks, so this produces smaller output.
Update J2CLOpts to recognize functions containing empty blocks as
trivial to avoid regressing one of its tests.
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This is no longer needed by emscripten as of:
https://github.com/emscripten-core/emscripten/pull/16529
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See https://github.com/emscripten-core/emscripten/pull/15855
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Turns out just removing the mangling wasn't enough for
emscripten to support both before and after versions.
See https://github.com/WebAssembly/binaryen/pull/3785
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This is needed to make sure globals are printed before element segments,
where `global.get` can appear both as offset and an expression.
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This change as automatically generated by:
$ ./scripts/test/generate_lld_tests.py
$ ./auto_update_tests.py --binaryen-bin=../binaryen-out/bin lld
The changes here are mostly due to:
- llvm now emits names for globals and segments
- emscripten now packs EM_ASM consts into a single contiguous segment
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See https://github.com/emscripten-core/emscripten/pull/13208
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Emscripten no longer needs this information as of
https://github.com/emscripten-core/emscripten/pull/12643.
This also removes the need to export __data_end.
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This depends on https://github.com/emscripten-core/emscripten/pull/12391
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To avoid the conditional trailing comma.
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These are now implemented in assembly as part of emscripten's
compiler-rt.
See: https://github.com/emscripten-core/emscripten/pull/11166
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This list is identical to the export list no there is no need to
output this twice.
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`BinaryIndexes` was only used in two places (Print.cpp and
wasm-binary.h), so it didn't seem to be a great fit for
module-utils.h. This change moves it to wasm-binary.h and removes its
usage in Print.cpp. This means that function indexes are no longer
printed, but those were of limited utility and were the source of
annoying noise when updating tests, anyway.
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Function signatures were previously redundantly stored on Function
objects as well as on FunctionType objects. These two signature
representations had to always be kept in sync, which was error-prone
and needlessly complex. This PR takes advantage of the new ability of
Type to represent multiple value types by consolidating function
signatures as a pair of Types (params and results) stored on the
Function object.
Since there are no longer module-global named function types,
significant changes had to be made to the printing and emitting of
function types, as well as their parsing and manipulation in various
passes.
The C and JS APIs and their tests also had to be updated to remove
named function types.
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