will Prefix Data be supported on the WebAssembly target?

I used this feature (http://llvm.org/docs/LangRef.html#prefix-data) in
the Zig frontend for something, but when the target architecture is
wasm32, it generates:

LLVM ERROR: function sections must contain one function each

There is already a bug report for it, but it does not seem to have much
attention given to it:


Is this something that is fundamentally not possible on the WebAssembly
target? Or is this something that simply needs an implementation? If so,
has anyone started working on it?