[lld] wasm-ld: Implement function pointer alignment (PR #105532)

[Sam Clegg via llvm-commits]

sbc100 wrote:

> > I would try to reproduce it using a simple example, and build with debug info so you can see where the crash is happening.
> 
> It would appear adjusting the first function of the table to be aligned rather than at index zero causes the crash, likely something thinks the entry function isnt where it actually is from my findings?

It shouldn't matter where any given function is in the table, and there is nothing special about the any entry or first function (all functions pointers are just table indexes).

https://github.com/llvm/llvm-project/pull/105532