[llvm-dev] [LLD] Adding WebAssembly support to lld
Rafael Avila de Espindola via llvm-dev
llvm-dev at lists.llvm.org
Mon Jul 3 11:12:41 PDT 2017
Sam Clegg via llvm-dev <llvm-dev at lists.llvm.org> writes:
>> Can you elaborate on semantically what the linker is actually doing for
> You are correct that the wasm linker does have more work to do than a
> traditional linker. There are more sections that the linker will need
> to re-construct fully. This is because there is more high level
> information required in the wasm format. For example, as you point
> out, the type of each function. Functions also live in their own
> index space outside of the program's memory space. This means that
> the simple approach of traditional linkers where almost everything can
> be boiled down to virtual addresses don't make as much sense here.
> This is part of the reason why early attempts to use ELF as the
> encapsulation format were abandoned: wasm is different enough that is
> didn't make sense.
BTW, is that summarized somewhere?
I remember the discussion about having relocations that would resolve to
function numbers, but I don't remember where that failed.
More information about the llvm-dev