llvm dev - Dec 2019 - Standard way to remove llvm intrinsics

Hi all,
it is not the first time that I need to remove intrinsics from a bc and in
the past I saw options like -strip-debug for opt. Now I would like to
remove all the occurrences of llvm.lifetime.start and llvm.lifetime.end. I
have done in just obtaining the .ll file, grep -v lifetime, redirecting it
to another .ll and use llvm-as.

I was wondering if there is a standard way to decide which intrinsics to
remove or if at the moment it is not possible.

Thanks
Alberto
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Typically this isn't done, debug information is a bit of a special case. I
don't see much of a reason to have tool support for this necessarily, but
would be happy to hear about possible use cases etc?

Thanks!

-eric

On Mon, Dec 16, 2019 at 12:04 PM Alberto Barbaro via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi all,
> it is not the first time that I need to remove intrinsics from a bc and in
> the past I saw options like -strip-debug for opt. Now I would like to
> remove all the occurrences of llvm.lifetime.start and llvm.lifetime.end. I
> have done in just obtaining the .ll file, grep -v lifetime, redirecting it
> to another .ll and use llvm-as.
>
> I was wondering if there is a standard way to decide which intrinsics to
> remove or if at the moment it is not possible.
>
> Thanks
> Alberto
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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Hi Eric,
Currently I'm mainly playing with interpreter and trying to understand how
it exactly works. I have noticed that lli complains when llvm.dbg.value is
encounter that why I wanted to remove it. Additionally, I would like to
understand that performances with and without intrinsics and the impact
they have on the interpreter in general.

Thanks
Alberto

On Wed, Dec 18, 2019, 00:33 Eric Christopher <echristo at gmail.com>
wrote:
> Typically this isn't done, debug information is a bit of a special
case. I
> don't see much of a reason to have tool support for this necessarily,
but
> would be happy to hear about possible use cases etc?
>
> Thanks!
>
> -eric
>
> On Mon, Dec 16, 2019 at 12:04 PM Alberto Barbaro via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hi all,
>> it is not the first time that I need to remove intrinsics from a bc and
>> in the past I saw options like -strip-debug for opt. Now I would like
to
>> remove all the occurrences of llvm.lifetime.start and
llvm.lifetime.end. I
>> have done in just obtaining the .ll file, grep -v lifetime, redirecting
it
>> to another .ll and use llvm-as.
>>
>> I was wondering if there is a standard way to decide which intrinsics
to
>> remove or if at the moment it is not possible.
>>
>> Thanks
>> Alberto
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>
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