[LLVMdev] [PATCH] Symbol offsets

[Ben Gamari]

Reid Kleckner <rnk at google.com> writes:

> +the people I hashed this out with so many months ago
>
> I think it's a reasonable proposal, but obviously I floated it. :) Let's
> try to get a second opinion.
>
> Again, it's a syntax something like:
> define void @foo() prefix [i8* x 2] { i8* @a, i8* @b } prologue [i8 x 4]
> c"\xde\xad\xbe\xef" { ret void }
>
As I've said previously, this syntax looks great to me. I haven't yet
written any code against this interface but I see no reason why we
wouldn't be able to use this to implement tables-next-to-code.

Gabor's suggestion of prefix data on basic blocks is interesting but I'm
not sure how this would be realized syntactically.

Either way, would it be possible to see something like this in LLVM
3.6. For a variety of reasons the TNTC hack GHC's LLVM backend currently
uses is becoming rather burdensome. It would be great to have a more
principled approach soon.

Cheers,

- Ben
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