78d4f12bde
This fixes the long standing bug with strict aliasing that caused heavily JITed code to miscompile. It stemmed first from pointer reinterpretation which is simply undefined behavior. After fixing that with an `union` and `ffi.copy`, the issue manifested in a different way. Further debugging showed that it was likely that `ffi.copy` (and `ffi.C.memcpy`) would still alias pointers through coercion, more undefined behavior. Now, memory is handled with an `Any` type instead, so aliasing does not occur although unaligned reads and writes may be a problem in the future. I hope this doesn't break. It was very painful to debug.
This is a WIP (read: absolutely not ready for serious work) tool for translating WebAssembly into Lua. Support is specifically for LuaJIT, with the secondary objective being Lua 5.4 and Roblox's Luau.
The instructions are minimal; run the program as program <edition> <file...> to generate the translations into stdout. Editions currently supported are LuaJIT and Luau.