Derek Schuff

Pass small structs in parameters instead of memory

11

Currently clang will pass any structure with more than a single element indirectly (as LLVM byval). Many other ABIs pass small structures in registers, potentially improving performance. We could do...

Frontend predefines

8

I had a user ask about Emscripten's predefines (specifically it was surprising that `__asmjs__` was predefined instead of `__wasm__`). For that particular case, since already Emscripten knows that we are...

ABI for C functions without prototypes

5

If you have a K&R-style C function declaration, such as `int foo();` currently LLVM will lower calls to it with the usual fixed-arg calling convention. Binaryen's s2wasm will leave the...

[JS API] 'run a host function' and 'create a host function' don't consistently handle completion records

1

The algorithm for [run a host function](https://github.com/WebAssembly/spec/blob/bc76fd79cfe61033d7f4ad4a7e8fc4f996dc5ba8/document/js-api/index.bs#L1080) uses `ReturnIfAbrupt` (`[=?=]`) when calling the underlying JS function (meaning it can just return the completion record), or otherwise returns the result value(s)...

Remove type() method from Tag object

4

This method mirrors the type methods on the other interfaces (Global, Memory, etc) as defined in the JS type reflection proposal (https://github.com/WebAssembly/js-types/blob/main/proposals/js-types/Overview.md) Since this proposal will be standardized first, JS...

llvm-strip throws invalid relocation offset when using --strip-debug

8

### Discussed in https://github.com/emscripten-core/emscripten/discussions/22289 Originally posted by **gmarella** July 28, 2024 Hi, I am trying to use `llvm-strip` that gets shipped with emscripten to strip the debug information from the...

Just for readability.

test_pthread_c11_threads_proxied is flaky on Chromium CI

2

It seems to be primarily on Windows; A recent example is [here](https://logs.chromium.org/logs/emscripten-releases/buildbucket/cr-buildbucket/8736138341013155377/+/u/Emscripten_testsuite__core0_/stdout) but most [recent failures](https://ci.chromium.org/ui/p/emscripten-releases/builders/ci/win) are this issue. 4 of the 50 most recent WIndows CI builds failed with...