[LLVMdev] [PATCH] Symbol offsets

[Ben Gamari]

Ben Gamari <bgamari.foss at gmail.com> writes:

> 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.
>
Do any of your have any thoughts on this? I would be willing to put
implementing this on my queue but I'd first want to know that this
proposal sounds somewhat acceptable.

Cheers,

- Ben
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