[LLVMdev] GetElementPtr

[Ryan Taylor]

Ok, thanks, this makes sense. But there is no way to get the SelectionDAG
to do it for me via something like visitGetElementrPtr?

On Thu, Dec 8, 2011 at 2:54 PM, Eli Friedman <eli.friedman at gmail.com> wrote:

> > On Thu, Dec 8, 2011 at 2:37 PM, Ryan Taylor <ryta1203 at gmail.com> wrote:
> >>
> >> Thanks.
> >>
> >> So basically then this operation is not target-independent like the docs
> >> suggest?
>
> It is target-independent in the sense that a frontend can generate
> code using GEP's without worrying about how a given target actually
> lays out structures.  It isn't target-independent in the sense that
> the actual computed offset in bytes isn't the same for every target.
> See also
> http://nondot.org/sabre/LLVMNotes/SizeOf-OffsetOf-VariableSizedStructs.txt
> .
>
> -Eli
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20111208/4aefbbeb/attachment.html>