llvm dev - Mar 2019 - Replace all memory access with registry access

Hi all,
Is there any way for converting any instruction that is loading or storing
in memory into an instruction that just deal with registries?

I'm not even sure if it is possible. Any suggestion?

Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20190306/b3428c7b/attachment.html>

Hi,

Could you share some more details about what you're trying to accomplish?

Generally speaking, some instructions necessarily load/store from/to memory
(e.g. updates to a shared memory region).

best,
vedant
> On Mar 6, 2019, at 9:37 AM, Alberto Barbaro via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi all,
> Is there any way for converting any instruction that is loading or storing
in memory into an instruction that just deal with registries?
> 
> I'm not even sure if it is possible. Any suggestion?
> 
> Thanks
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

Hi,
Thanks for getting back to me. I'd like to understand if it possible to
avoid instructions that relies on memory address and instead have all the
necessary data inside registers. I think this would simplify a lot analysis
on the LLVM IR..

Thanks again

On Wed, Mar 6, 2019, 18:23 Vedant Kumar <vsk at apple.com> wrote:
> Hi,
>
> Could you share some more details about what you're trying to
accomplish?
>
> Generally speaking, some instructions necessarily load/store from/to
> memory (e.g. updates to a shared memory region).
>
> best,
> vedant
>
> > On Mar 6, 2019, at 9:37 AM, Alberto Barbaro via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> >
> > Hi all,
> > Is there any way for converting any instruction that is loading or
> storing in memory into an instruction that just deal with registries?
> >
> > I'm not even sure if it is possible. Any suggestion?
> >
> > Thanks
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20190306/d11afa1a/attachment.html>

Hi,
There is a pass called mem2reg (Mem2Reg.cpp) which you can take a look. I
used this pass in a project
to reduce accesses to memory.

best,

Andreu

On Wed, Mar 6, 2019 at 2:44 PM Alberto Barbaro via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi all,
> Is there any way for converting any instruction that is loading or storing
> in memory into an instruction that just deal with registries?
>
> I'm not even sure if it is possible. Any suggestion?
>
> Thanks
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20190306/24581aaa/attachment.html>